400/800 PAL. AND UK. · 2017-08-25 · technician. The Diagnostic Flowcharts (Section 5 and 7) provide detailed diagnostics and repair procedures for technicians not completely familiar

ATARI HOME COMPUTER

400/800 PAL. AND UK.

\

AT ARI believes that the information described in this manual is accurate and reliable, and much care has been taken in its preparation. However, no responsibility, financial or otherwise, shall be accepted for any consequences arising out of the use of this material. Information contained herein is subject to change. Revisions may be issued to advise of such changes and/or additions.

Correspondence regarding this document should be forwarded to Manager of Technical Support, ''Consumer Product Service, ATARI, Incorporated;· 1312 Crossman Road, Sunnyvale, ·CA . 94086,, U.S. America.

TABLE OF CONTENTS

Section Title Page

INTRODUCTION ix

1 THEORY OF OPERATION 1-1

Overview 1-1 User Interface 1-2 400/800 Mechanical Description 1-3

Motherboard 1-4 . Central Processing Unit 1-5 ROM Personality PCB 1-5 RAM PCB 1-5 Keyboard 1-6 Power Supply 1-6 Program Cartridge 1-7

400/800 Electronic Discussion 1-8 Central Processing Unit 1-8 CPU Board 1-9 CPU 6502 Integrated Circuit 1-10 Alphanumeric Television 1-11

. Interface Controller Color Television Interface 1-13

Adaptor Graphics Television Interface Adaptor 1:..13

Motherboard Console-400 1-13 Composite Video 1-14 Pot Keyboard Integra ted Circuit 1-15 Peripheral Interface Adaptor 1-15 Key-In Key-Out Integrated ,.J-16'

Circuit •. '·: .. (.'

Memory Map Decoder '·.:-:. ~ .,c.:,·'' ....

,.: '·1-16 ,. . ~ '

1/0 Decoder 1-17, . .:..L ~ <, ... ; •.

Motherboard Console - 800 1-19 . n~··:. ,. . ..

Bi-directional Data Buffer 1-.19,_') o'

1/0 Decoder 1-20 ROM Personality Board 1-20

Power Supply 1-22 ROM Cartridge 1-22 Accessories 1-22

AC Power Adaptor 1-22 TV Switch Box 1-23 'BASIC' Program Cartridge 1-23

2 SILKSCREENS AND SCHEMATICS 2-1

3 TROUBLESHOOTING AND TESTING 3-1

Overview 3-1

ATARI Home Computers iii PAL/UK

Section

4

TABLE OF CONTENTS

Tests Equipment Needed Testing With and Without

The SALT II Cartridge Overview of Tests

Power-Up Test Keyboard Test RAM and ROM Test SALT II Menu Color Bar Test Any Video Test Grey Bar Test Keyboard Test Switch Test Tone Test Display Options Port Test Verify ROM Test RAM Test RAM Test M Test Star Raiders Test Shake Test Burn-In

Description of the Other Functions Production Test Boot B Examine Adjust

Summary

DISASSEMBLY/ASSEMBLY MAINTENANCE AT ARI 400 Home Compu,ter Console- Disassembly

Keyboard and Power Supply Access Keyboard Removal Power Supply Removal CPU, RAM and Motherboard Access CPU and RAM Removal

AT ARI 800 Home Computer Console - · Disassembly Access to RAM Boards and

ROM Board Access to Power Supply and

Keyboard Assembly Remove Top Cover Remove the PCB Module Remove the Power Supply

AT ARl HomP ~omnutPrs iv

Page

3-1 3-1 3-2

3-2 3-2 3-2 3-2 3-5 3-6 3-7 3-8 3-10 3-10 3-10 3-11 3-11 3-12 3-12 3-12 3-16 3-17 3-17 3-17 3-18 3-18 3-18 3-18 3-18 3-18

4-1 4-1 4-1 4-3 4-4 4-6 4-6

4-8

4-8

4-10

4-10 4-11 4-12

,.

01

" "{ , r. :·. BJ:/.\ T ./T TK ... ,

TABLE OF CONTENTS

Section Title Page

Access to CPU Printed Circuit Board 4-13 Access to Motherboard 4-14 Keyboard Removal 4-15

AT ARI 400 Home Computer Console - 4-16 Assembly Module Assembly Reassembly 4-16 Keyboard Installation 4-17 Power Supply Installation 4-17 Top Cover Installation 4-18

AT ARI 800 Home Computer Console 4-18 Assembly Keyboard Installation 4-18 Motherboard Installation 4-18 CPU PCB Installation 4-19 Power Supply Installation 4-19 Module Assembly Installation into Top Cover 4-20 Bottom Cover Installation 4-20 RAM and ROM Installation 4-21 Cartridge Door Assembly 4-21

PCB Contact Cleaning and Lubricating 4-21 Tools Required 4-21 Procedures 4-21

Visual Inspection 4-22

5 400 DIAGNOSTIC FLOWCHARTS 5-1 ' <

6 400/800 SYMPTOM CHECKLIST 6-1

7 800 DIAGNOSTIC FLOWCHARTS 7-1

8 GAME CONTROLLERS 8-1

Joystick (X-Y Controller) 8-2 Joystick (X-Y) Controller) Check·

\. · .. 8-4 ·, -,

Equipment Needed 8-4 Procedure . ,I 8-4

Game Paddle 8-5 Game Paddle Controller Check 8-6

Equipment Needed 8-6 Procedure 8-6

9 PARTS LIST 9-1 400 Computer UK 9-2 400 Computer PAL 9-7 800 Computer UK 9-12 800 Computer PAL 9-19

10 SERVICE BULLETINS 10-1

ATARI ~gme Computers v PAL/UK

LIST OF ILLUSTRATION

Figure Title Page

1-2 AT ARI 800 Home Computer Console 1-2 1-3 UK 400 Power Supply 1-7 1-4 UK 800 Power Supply 1-7 1-5 800 PAL/CPU Board 1-9 1-6 MPU Pin Assignments 1-11 1-7 ANTIC Pin Assignments 1-12 1-8 CTIA/GTIA Pin Assignments 1-13 1-9 POKEY Pin Assignments 1-15 1-10 PIA Pin Assignments 1-16 1-11 800 PAL and UK Audio Inductor 1-18 1-12 400 Motherboard Flow Diagram 1-24 1-13 400 Power Supply 1-25 1-14 800 Motherboard Flow Diagram 1-26 1-15 800 Power Supply Flow Diagram 1-27 1-16 800 Personality Board 1-28 1-17 CPU Board Flow Diagram 1-29 1-18 8K Dynamic RAM Flow Diagram 1-30 1-19 16K Dynamic RAM Flow Diagram 1-31 1-20 Game Cartridge Flow Diagram 1-32 1-21 AT ARI Home Computer System 1-33

Block Diagram

2-1 400 Motherboard Silkscreeh 2-3 : "-·i-1

'2-2 400 Motherboard Schematic 2-4 2-3 400 Power Supply Silkscreen 2-6 2-4 400 Power Supply Schematic 2-7 2-5 - 800 Motherboard Silkscreen 2-9 2-6 800 Motherboard Schema tic 2-10 2-7 800 Power Supply Silkscreen 2-12 2-8 . 800 Power Supply Schematic 2-13 2-9 ., 800 Personality Board Silkscreen 2-14 2-10 800 Personality Board Schematic 2-15 2-11 CPU Board Silkscreen 2-16 2-12 CPU Board Schema tic 2-17 2-13 • 8 K RAM Board Silkscreen 2-18 2-14 ~8K RAM Board Schematic 2-19 2-15 16 K RAM Board Silk screen 2-20 2-16 16K RAM Board Schematic 2-21 ...

ATART HnrnP rnrnnii1"Prc: ui

LIST OF ILLUSTRATION

Figure Title Page

3-1 Special Graphics Test 3-3 3-2 SALT Header 3-4 3-3 SALT II Menu 3-5 3-4 Color Bar Test Screen 3-6 3-5 Any Video Test Screen 3-8 3-6 Grey Bar Test Screen 3-9 3-7 Port Test Screen ·3-11 3-8 RAM Test Screen 3-14

4-1 400 Console, Bottom Cover Screw Location 4-2 4-2 400 Console Top Cover Removal 4-3 4-3 400 Console, Keyboard Removal 4-4 4-4 AT ARI 400 Console, Power Supply Removal 4-5 4-5 AT ARI 400 Console, Module Assembly 4-7 4-6 AT ARI 800 Console, Cartridge Door - 4-9

Assembly Removal 4-7 AT ARI 800 Console, Bottom Cover Removal 4-10 4-8 AT ARI 800 Console, Module Assembly Removal 4-11 4-9 AT ARI 800 Console, Power Supply Removal 4-12 4-10 AT ARI 800 Console, CPU Printed Circuit - 4-13

Board Removal 4-11 AT ARI 800 Console, Motherboard Removal 4-15 4-12 AT ARI 800 Console Keyboard Removal 4-16

5-1 Keyboard Connection Chart 5-38 5-2 Defective RAM Boards 5-39

7-1 Keyboard Connection Chart 7-38 7-2 Defective RAM Boards. 7-39

8-1 Joystick (X-Y Controller) 8-2 8-2 Joystick Schematic 8-3 8-3 Game Paddle 8-5 8-4 Game Paddle Schematic :' 8-6 8-5 Driving Controller 8-7 8-6 Driving Controller Schematic 8-8 8-7 Keyboard Controller 8-10 8-8 Keyboard Wiring 8-10 8-9 Keyboard Schema tic 8-11

AT ARI Ho;me Computers vii PAL/UK

LIST OF TABLES

TABLE Title Page

1-1 Memory Map Selected Lines 1-17 1-2 1/0 Decoder Select Line 1-19

5-1 Clock Circuit 5-36 5-2 Defective RAM Boards 5-39 5-3 Port Test Legend 5-40

7-1 Clock Circuit 7-36 7-2 Defective RAM Boards 7-39 7-3 Port Test Legend 7-40

INTRODUCTION

The AT ARI 4-00/800 Home Computer ™ Field Service Manual is organized in 10 Sections:

1 THEORY OF OPERATION - overview of how the 4-00 and 800 Home Computers work.

2 SILKSCREENS AND SCHEMAncs- electrical layouts and drawings for major components.

3 TESTING AND TROUBLESHOOTING -overview of tests which assist in diagnosing malfunctions.

4 DISASSEMBLY I ASSEMBLY detailed instructions to completely disassemble and assemble both units.

5 400 DIAGNOSTIC FLOWCHARTS detailed procedures for troubleshooting and repairing the 4-00 Computer.

6 400/800 SYMPTOM CHECKLIST - quick reference for t~oubleshooting each computer.

7 800 DIAGNOSTIC FLOWCHART detailed procedures for troubleshooting and repairing the 800 Computer.

8 GAME CONTROLLERS -overview of hand controller construction with electrical schematics and recommended test procedures.

9 PARTS LIST- detailed breakdown of all parts used in each unit.

10 SERVICE BULLETINS - section to be used to hold Field Change Orders, Upgrade Bulletings, and Tech Tips.

This manual is designed for use by both the experienced and inexperienced service technician. The Diagnostic Flowcharts (Section 5 and 7) provide detailed diagnostics and repair procedures for technicians not completely familiar with the ATARI 4-00/800 Home Computers. The Symptom Checklist (Section 6) provides a rapid repair reference for the more experienced technician.

AT ARI Home Computer ix {_';

SECTION I

THEORY OF OPERATION

OVERVIEW

The Atari 400 Computer Home Console contains the central processor unit (CPU) and memory in the form of the Operating System (read-only-memory (ROM)) and 8K or 16K of user programmable random access memory (RAM). The console contains the keyboard, cartridge slot, controller jacks, and serial input/output (I/O) port for connecting peripheral devices (see Figure 1-1).

START SWITCH

SELECT SWITCH

POWER INDICATOR LED---

OPTION SWITCH ___ _.

SYSTEM RESET ____ _.

SWITCH

Figure 1-1. ATARI 400 Home Computer Console

AT ARI Home Computers 1-1

POWER ONIOFF SWITCH

PERIPHERAL CONNEC:TOR

JACK

PAL/UK

The AT ARI 800 Home Computer Console contains the CPU and memory in the form of the Operating System (lOK of read-only-memory (ROM)) and 8K to 16K (standard) of user programmable random access memory (RAM); plus two expansion sockets for additional RAM modules (maximum 48K). The console also contains the keyboard, cartridge slots (2), controller jacks and a serial 1/0 port for connecting peripheral devices (see Figure 1-2).

START SWITCH

SELECT SWITCH

OPTION SWITCH

SYSTEM RESET __ .,~ SWITCH

* = Not used on 800 UK

PERIPHERAL CONNECTOR

JACK CHANNEL ___ _,

2/3 SELECT

POWER---~

ON/OFF SWITCH

SYSTEM-----' POWER JACK

Figure 1-2. AT ARI 800 Home Computer Console

USER INTERFACE

The AT ARI 400/800 Home Computer Consoles are general purpose microcomputers using the 6502 microprocessor. The AT ARI 400/800 Consoles are the central processing units for their respective systems. Each console comes standard with a built-in typewriter style keyboard, 8K/16K of RAM, ROM operating systems, connector jacks for adding peripherals and hand controllers, and a 15-foot Radio Frequency (RF) cable for connection to the user's television set.

The controller jacks on the front of both consoles accepts the X-Y (joystick) and paddle hand controllers available from AT ARI.

r"\"1\ T IT TT..,. .·

The right side panel of the Atari 400 Computer Console contains a peripheral jack, power ON/OFF switch, and a power jack. The channel 2/3 switch is located on the back of the console. This switch changes the console transmission frequency to either channel 2 or channel 3 (refer to Figure 1-1 ). ·

The right side panel of the Atari 800 Home Console contains a monitor jack, a peripheral jack, a channel 2/3 switch, a power ON/OFF switch, and a power jack (refer to Figure 1-2). Note that the 800/UK version does not use the channel 2-3 select switch; and the numbers have been removed.

Both Console keyboards provide a full alphanumeric character set, cursor controls, and special purpose keys. The alphabet keys when used in conjunction with the Control (CTRL) key become special graphic symbols. To the right of the keyboard is the power ON light and four special control keys (refer to Figure l-l and Figure 1-2). From the top to the bottom they are:

SYSTEM RESET - Interrupts whatever the computer is doing and restarts the Operating System or Program Cartridge.

OPTION Interrupt used by the Program Cartridge to choose among the variations within a game or program.

SELECT Interrupt used to select one of several games or programs on the Program Cartridge.

START Interrupt used to Start the game or program selected from the Program Cartridge.

400/800 MECHANICAL DESCRIPTION

The Atari 400/800 Computer Home Consoles are made up of seven major functional modules they are:

o Motherboard

o Central Processing Unit P_rinted Circuit Board

o ROM Personality Printed Circuit Board (Operation System) (800 Only)

o RAM Printed Circuit Board(s)

o Keyboard

o Power Supply Board

o Program Cartridge

ATARI Home Computers 1-3 PAL/UK

The Printed Circuit Boards (PCBs) plug into sockets on the motherboard, using a common Address Bus, Data Bus and clock lines. The various power requirements are routed from the power supply through the motherboard to all printed circuit boards.

The keyboard connects directly to the motherboard through a ribbon connector. The sixteen-line Address Bus allows the microprocessor to directly address 64K of memory. The eight-line Data Bus provides the communication and data path between the functional modules.-

Figures 1-12 thru 1-21 at the end of this section provide function block diagrams of PCBs in the 400/800 systems.

Motherboard

The motherboard ties all components of the computer system together. It also performs a variety of logic functions. All PCBs and connector cables plug into the motherboard and allow communication between the functional blocks of the 400 and 800 Computer Consoles. The motherboard also performs the following:

o Generates a 3.54 MHz master clock for the Central Processing Unit's PCB.

o Generates the Power-ON RESET for the Central Processing Unit PCB and the peripherals.

o Provides the driving circuitry for the Key-Press signal from the Central Processing Unit PCB to the Console speaker.

o Converts signals from the various hand controllers into recognizable data for the microprocessor.

o Buffers and drives the data lines between the Central Processing Unit PCB;. the RAM PCBs, and the remainder of the system.

o Does the first memory map decoding of the possible 64K address locations into 8K blocks for the microprocessor.

o Generates control signals for the peripheral devices.

o Receives video data from the Central Processing Unit PCB, converts it into a composite video and routes it to the power supply PCB.

o Combines the sound from the Computer system and the audio track of prerecorded cassettes.

o Develops the sound subcarrier for the television audio as part of the-composite video.

-..,··,

1 _l! OAT /T Tk" ·

Central Processing Unit

The Central Processing Unit (CPU) PCB is the controller of the en'tire Console system. The CPU PCB contains the 6502 microprocessor, and the ANTIC and CTIA (or GTIA) chips. The CPU PCB controls the Console system and its peripheral devices through address lines (to select which device it needs to communicate with) and data lines (to transmit and/or receive data from a selected device) ·common to· the entire system. Operating instructions for the microprocessor come from the ROM Operating System on the Personality PCB. Additional functions of the CPU PCB are:

o Receives the master clock from the motherboard and generates Phase 1 (0 1 or Ph 1) and Phase 2 (02 or Ph 2) clocks used to synchronize the entire system.

o Transmits a REFRESH signal at least every 2 miliseconds to refresh the dynamic RAM chips on the RAM PCB(s).

o Receives the four TRIGGER lines from the fire button on each of the hand controller accessories.

o Receives the lines from the four control switches located to the right of the k~yboard.

o Generates video signals to be processed by the motherboard before they are sent to the RF module on the Power Supply PCB.

ROM Personality PCB

The ROM Personality PCB contains information in Read-Only Memory (ROM), the program of operating instructions for the microprocessor. Two 4K ROMs contain the Operating System, and one 2K ROM contains the arithmetic functions used for BASIC programming. Information is retrieved from the ROMs by addressing a particular location on the ROM using the Address Bus. The data contained at that location is placed on the Data Bus to be read by the microprocessor.

The ROM Personality PCB also provides the CHIP SELECT signals used to select LSI chips throughout the Console system and for the bi-directional data buffers on the motherboard.

RAM PCB

The Random Access Memory (RAM) PCB performs the function of temporary data storage for the system. The RAM is dynamic, requiring REFRESH, and is available in 8K or 16K versions.

Each RAM chip on the RAM PCB has only seven address lines. To address 16K separate locations requires 14 address lines. To accomplish this, a 14-bit address is

Atari Horne Computers 1-5 PAL/UK

sent to the address demultiplexer, which first passes the lower seven bits to the RAM chips as a Row Address. After an appropriate delay, the highest seven bits are passed as a Column Address. Data is then either put into or taken out of the location selected. The direction of data flow is determined by the Read/Write line.

REFRESH occurs at least every two milliseconds. The REFRESH signal is genera ted on the CPU Board.

Keyboard

The typewriter-style keyboard is used to generate alphanumeric characters as well as special graphic symbols. The keyboard allows the operator to communicate with the console system for writing programs or responding to preprogrammed cassettes or cartridges. The keyboard consists of 57 normally open switches. The switches are scanned at a rapid rate and when a switch is found closed, that scan pattern is sent to the microprocessor for encoding.

Power Supply

The Power Supply PCB receives 9VAC from an external power adaptor (transformer) and provides +5Vdc, +12Vdc, and -5 Vdt for the Console system. The Power ON/OFF switch is mounted on the Power Supply PCB and removes input power by opening the 9Vac lines. An interlock switch breaks power to the system when the operator opens the top panel of the Console to install or remove Program Cartridges.

The RF Module resides on the Power Supply PCB. The RF Module generates the RF output for the video screen from the composite video signals received from the motherboard, and is switchable to television channel 2 or 3.

Voltages:

+ 5V de A - Supply voltage for the logic PCBs.

+5Vdc B - Specially filtered for the video circuitry.

+12Vdc and -5 Vdc- Supply voltage for the dynamic RAM chips.

The UK 400/800 uses UHF on Channel 36 and the RF modulator is on the top of the power supply board (see Figures 1-3 and 1-4). The RF cable (CA016294) is also different (required) to handle the higher RF.

ATART Hnm,::. rnmn111"Pr<: PAT /ITT<

Figure l-3~UK 400 Power Supply

Figure 1-4. UK 800 Power Supply

Program Cartridge

The Program Cartridge permanently stores the microprocessor instructions for a particular application • It consists of two 4K ROM chips mounted on the enclosed PCB. Information is received from the ROM chips by addressing the memory locations assigned to the Program Cartridge slot(s). Data in the memory locations is then placed on the Data Bus lines.

AT ARI Home Computer 1-7 PAL/UK

400/800 ELECTRONIC DISCUSSION

The remainder of this section provides a detailed discussion of the functions of the seven rna jor modules.

Central Processing Unit

The Central Processing Unit (CPU) PCB contains the 6502 CPU (or MPU) chip (A303), the CTIA or GTIA chip (A301), the ANTIC chip (A302), tri-level address buffers (Z303 and Z30£t.), and the clock generator (Z302A and Z302B).

CPU Board

The 800/PAL CPU board has the most changes, (see Figures 1-5 thru 1-6). One 74LS244 (C014313) and one 74LS02 (C014340-301) chip have been removed from the board and a 4.433618 MHz (C012284-Y301) has been added to develop the color delay on PAL CPU Board.

The following IC's are also changed:

Location Domestic

A303 C014377

A301 C014805

A302 C012296

ATARI Home Computers

PAL & UK

C014806

C014889

C014887

Description

The domestic 6502 operates at 2.0 MHz, and the PAL & UK 6502 operates at 3.0 MHz. The increased speed is required to operate within PAL & UK television standards.

A special PAL and UK version.

A faster version for PAL and UK -version.

PAL/UK. CPU Board

Figure 1-5. 800 PAL/CPU Board

1-9 PAL/UK

CPU 6502 Integrated Circuit

The 6502 microprocessor contains register flags, interconnections, arithmetic logic, and control logic, all recognized operation codes. The characteristics of the 6502 microprocessor are:

0 Byte-oriented structure

0 151 opcodes

0 Decimal and binary arithmetic modes

0 Seven addressing modes

0 True indexing

0 Stack pointer

0 Two interrupt levels

0 64K address range

0 Integral clock circuit

0 Single +5 volt de power requirement

Figure 1-6 i~ an illustr~tion of the 6502 pin assignments. The functions of the pins are exp1q·ined on ;tj)e.,.'folltj~w:mg pages.

AT ART l-lnrnc rnrnr"\IITCI'"~ 1 _1 () 0 11 T /T TV

vss ~0 REs

ROY 2 39 P2

~1 3 38 so

IRQ ~ 37 .fo (IN)

N.C. 5 36 N.C.

NMi 6 3' N.C.

SYNC 7 3,. R/W

vee 8 33

9 32

10 MCS6502 31

11 30

12 29

13 23

1~ 27

15 26

16 25

17 24

18 23

19 22

20 21

Figure 1-6. MPU Pin Assignments

Alphanumeric Television Interface Controller

The primary function of the Alphanumeric Television Interface Controller (ANTIC) chip is to fetch data from memory, independent of the processor, for display on the video screen.

Figure 1-7 is an illustration of ANTIC Pin Assignments.


GROUND vss 1 • 40 D4 Data Bus CTIA Data AN¢ 2 39 D5 Data Bus CTIA Data ANl 3 38 D6 Data Bus Light Pen LP 4 37 D7 Data Bus CTIA Data AN2 5 36 RES Reset Interrupt Input RNMl 6 35 FPh~ Fast Phase 0 Clock Interrupt Output NMl 7 34 Ph9J Phase 0 Clock Refresh REF 8 33 D3 Data Bus HALT HALT 9 32 D2 Data Bus Address Bus A3 . 10 ANTIC 31 Dl Data Bus Address Bus A2 11 30 D~ Data Bus Address Bus Al 12 29 Ph2 Phase 2 Clock Address Bus A~ 13 28 A4 Address Bus Read/Write R/W 14 27 A5 Address Bus Ready RDY 15 26 A6 Address Bus Address Bus AlO 16 25 A7 Address Bus Address Bus Al2 17 24 A8 Address Bus Address Bus Al3 18 23 A9 Address Bus Address Bus Al4 19 22 All Address Bus Address Bus Al5 20 21 VDD 5V Power

Figure 1-7.. ANTIC Pin Assignments

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1\ ..,... 1\ r\ T T T- --- r"- --- _ -~- ---T""'\ Jt T IT TTl

Color Television Interface Adaptor

The Color Television Interface Adaptor (CTIA) chip retrieves graphics data from memory via the ANTIC DMA process. This data is routed to the CTIA graphics registers. Figure 1-8 illustrates the pin assignments for the CTIA and GTIA.

Address Bus Al 1 4-0 A2 Address Bus Address Bus AS 2 • 39 A3 Address Bus Ground vss 3 38 A4- Address Bus Data Bus D3. 4 37 D4 Data Bus Data Bus D2 5 36 D5 Data Bus Data Bus D1 6 35 D6 Data Bus Data Bus D,0 7 34- D7 Data Bus Trigger 0 TJ1 8 33 R/W Read/Write Trigger 1 Tl 9 321 CS1 Chip Select 1 Trigger 2 T2 10 CTIA 31 CS2 Chip Select 2 Trigger 3 T3 11 30 PH2 Phase 2 Input Console Sw 0 511 12 29 FPHO Clock OUt Console Sw 1 51 13 28 osc Oscillator Input Console SW 2 52 14- 27 VDD Power Console SW 3 53 15 26 HALT HALT PAL Colr Delay PAL 16 25 CSYNC Output Sync Color Delay DEL 17 24- LUM 2 Luminance 2 Output Alphanum. Data 0 ANO 18 23 LUM 1 Luminance 1 Output Alphanum·. Data 1 AN! 19 22 LUM g Luminance 0 Output

• Alphanum. Data 2 AN2 20 21 COL Color

Figure 1-8. CTIA/GTIA Pin Assignments

Graphics Television Interface Adaptor

The Graphic Television Interface Adaptor (GTIA) is an extended capabilities version of the CTIA, having additional high-resolution modes.

Motherboard Console - 400

The 4-00 Console Motherboard contains the Pot Keyboard (POKEY) chip (A101), the Peripheral Interface Adaptor Chip (PIA) (A102), the ROM Personality chips (A103 thru A1 05), the Keyboard Key-In/Key-Out analog multiplexers, the Memory Map Decoder (2103), the controller jacks (J101 thru J104), the CPU connector jack (J110), the Keyboard connector jack, RAM connectors and Cartridge connectors. The following parts are changed on the motherboard (Figure 1-9 illustrate chip placement on the 400.)

AT ARI Home Computers 1-13 PAL/UK

Location Domestic

A103 C014599

Al04 C012499

Ll02 2.0uh

XlOl 3.57 MHz

Composite Video

PAL & UK

C015299

C015199

.82 uh

3.54MHz ·

Description

Custom Rom "F"

Custom ROM "E"

Audio indicator, changed from 2.0 uh to .82 uh to accommodate the different subcarr ier used by PAL and UK versions.

Crystal Change (Not shown in illustration)

The 400 and 800 Motherboards route the Composite video signals ( COMP CHROMA, COMP LUM, MOD, and COMP VIDEO) to the Power Supply to build the RF video output.

Pot Keyboard Integrated Circuit

The Pot Keyboard Integrated Circuit (PO.KEY) provides the interfac~ between t~e Keyboard, the Serial 1/0 ports, and the microprocessor. It also contains four semiindependent audio channels, each with its own frequency, noise-, and volume control. Figure 1-9 .·shows the pin assignments of the POKEY.

Ground vss 1 • 4-0 D2 Data Bus Data Bus D3 2 39 Dl Data Bus Data Bus D4- 3 38 DO Data Bus Data Bus D5 4- 37 AUDIO Audio Out Data Bus D6 5 36 AO Address Bus Data Bus 07 6 35 Al Address Bus Phase 2 Clock 02 7 34- A2 Address Bus Pot Scan P6 8 33 A3 Address Bus Pot Scan P7 9 32 R/W Read/Write Control Pot Scan P4- 10 POKEY 31 CS1 Chip Select Pot Scan P5 11 30 cso Chip Select Pot Scan P2 12 29 IRQ Interrupt Request Pot Scan P3 13 28 SOD Serial Output Data Pot Scan PO 14- 27 OCLK Serial Output Clock Pot Scan Pl 15 26 BCLK Bidirectional Clock Keyboard Scan KR2 16 25 KRi Keyboard Scan 5 V Power VDD 17 24- SID Serial Input Data Keyboard Scan K5 18 23 KO Keyboard Scan Keyboard Scan K4- 19 22 K1 Keyboard Scan Keyboard Scan K3 20 21 K2 Keyboard Scan

Figure 1-9. POKEY Pin Assignments

Peripheral Interface Adaptor

The Peripheral Interface Adaptor (PIA) (6520) has two 8-bit programmable 1/0 ports and two control bits for each port, for a total of ten lines per port. Figure 1-10 shows the pin assignments of the PIA.

AT ARI Home Computers 1-15 PAL/UK

vss 40 CAl

PAl 2 39 .. CA2

PAl 3 38 IRQA

PA2 4 37 IRQB

PA3 5 36 RSl

PA4 6 35 RSII

PA.5 7 34 mET

PA6 8 33 DO

PA7 9 32 01 ~

PBtJ 10 MCS6.520 31 02

PBl 11 30 03 ~

PB2 12 29 04

PBJ 13 28 05

PB4 14 27 06

PB.5 15 26 07

PB6 16 2.5 ENABLE

PB7 17 24 CSl

CB1 18 23 ffi

CB2 19 22 CSII

vee 20 21 R/W

Figure 1-10. PIA Pin Assignments

Key-In Key-Out Integrated Circuits

These two 4051 (Z101 and Z102) integrated circuits are used to scan the Keyboard for input data on the 400 and 800 Computer Consoles. The 4051 integrated circuits are analog multiplexers controlled by the input lines A, B, C and X.

Memory Map Decoder

The Memory Map Decoder integrated circuit (Z103) on the 400/800 Motherboard is a one-of-ten decoder. Four input lines (pins 12, 1.3, and 14, and 15) determine which output line is selected. The 400/800 Computer Console uses only three of the input lines (pins 13, 14, and 15 and pin 12 being grounded) for a total of eight selected output lines (SO -57). Refer to Table 1-1 for the line selected for each input combination.

Signal-Grd

Pin - 12

L

L

L

L

L

L

L

L

L

1/0 Decoder

Table 1-1

Memory Map Selected Lines

Al5 Al4 A13 Active

13 14 15 Line

L L L 1- so L L H 2- 51

L H L 3-52

L H H 4- - 53

H L L 5- 54-

H L H 6-55

H H L 7-56

H H L 7-56

H H H 9-57

Device

8K RAM BLOCK

8K RAM BLOCK

8K RAM BLOCK

8K RAM BLOCK

8K RAM/CARTRIDGE L,R

8K RAM/CARTRIDGE L

2K ROM

1/0 DECODER (Zl 05)

4-K ROMs (2-"E" & "A")

The 1/0 Decoder integrated circuit (Zl05) is a one-of-eight decoder/demultiplexer. The 1/0 Decoder is used to select the different output devices, such as PIA chip, POKEY chip and the CTIA chip. Only four of the possible output selections are used. (See Table 1-2.) The 1/0 Decoder is enabled by inputs on pins 4-, 5, and 6; pin 4- input coming from the Memory Map Decoder (56); pin 5 input coming the Address Bus and pin 6 input coming from the Chip Select (CS) line. The Binary Decode is provided by the Address Bus (A08, A09 and A1 0).

Figure 1-11 illustrates placement of the audio inductor on the 800 Motherboard. Ll02 is changed from 2.0uh to .82 uh.


800 Mother Board

Domestic 2.0 Ll02 PAL/UK .82 --.a Figure 1-11 800 PAL and UK Audio Inductor

Table 1-2

I/O Decoder Select Line

Enable Binary Decode

A12 All S6 AlO A59 A8 Active Device Pin 6 6 4 3 2 1 Pin Selected

H L L L L L YO -15 CTIA

H L L L L H ---- 14 Not used

H L L L H L Y2 -13 POKEY

H L L L H H Y3 -12 PIA

H L L H L L ---- 11 Not Used

H L L H L H Y5 -10 External Select

---- 9 Not Used

---- 7 Not Used

Motherboard Console - 800

Provided in Motherboard Console - 400, for items similar in both the 400 and 800 Console Motherboards. The following paragraphs describe those items unique to the 800 Console Motherboard.

The 800 Console Motherboard contains the POKEY chip (A101), the PIA chip (A102), the Keyboard Key-In/Key-Out analog multiplexers (2103 and 2104), the 1/0 Decoder (2101), Bi-directional Data Buffers (2105 and 2106), the controller jacks (Jl01 through J 104 ), the Keyboard connector jack (J 1 06 ), the left and right Program Cartridge jacks (J108 and J109), the CPU connector jack (J101), the ROM Personality connector jack (J107), and the RAM Memory connector jacks (J102, J103, and J104). See Figures 1-12 and 1-13.

Bi-directional Data Buffer

The Bi-directional Data Buffers (2105 and 2106) are 74LS243 quad transceivers, commonly referred to as tri-level buffers. Tri-level refers to the three levels that can occur in the device; the first level pin 1 going high and pin 13 staying low, allows data to flow through the data buffer in the direction of the CPU; the second level, pin 13 going high and pin 1 staying low, allows data to flow through the data buffer in the direction of the POKEY chip, the PIA chip and the Personality PCB; the third level, with pin 1 and pin 13 both staying low, creates a high impedance condition in the data buffers and allows other devices to transmit data on the Data Bus lines. This high impedance state also isolates the CPU and the RAM PCB from noise generated from a device using the Data Bus lines.

ATARI Home Computer 1-19 PAL/UK

1/0 Decoder

The 1/0 Decoder integrated circuit (ZlOl) is a one-eight decoder demultiplexer. The 1/0 Decoder is the same in the 400 and 800, but is labeled ZlOl in the 800 Console and 2105 in the 400 Console.

ROM Personality Board

The ROM Personality printed circuit board plugs into connector Jack J107 and occupies memory locations D800 through FFFF. The Personality board contains the operating system on three ROM chips, two 4K chips and one 2K chip (see Figures 1-13 and 1-14). The two 4K ROM chips (A401 and A403) contain the 1/0 subsystem, interrupt processing, initialization Power-Up and Reset. The 2K ROM chip (A402) contains the floating point arithmetic package. Different ROMs are used in PAL & UK versions.

o 1/0 Subsystem

The 1/0 subsystem contained in the ROM Operating System provides a high-level interface between the user programs and the Console and peripheral hardware. All peripheral devices capable of dealing with character data have symbolic names (such as K, D, P, E) and may be accessed using a Central 1/0 ( CIO) routine.

o Interrupt Processing

All hardware interrupts are handled by the interrupt subsystem in the Operating System. Vectored addresses contained in RAM memory point to subroutines in ROM to handle each type of interrupt.

o Initialization

There are two levels of initialization provided by the system, Power-Up and Reset. Power-Up initialization is performed each time the system power is turned on, and Reset initialization is performed each time the Reset key is pressed.

Whenever the system power is turned on, the Operating System examines and notes the configuration of the unit. The Operating System performs the following actions at Power-Up:


Determines the highest available RAM address

Clears all RAM to zeroes

Establishes all RAM interrupt vectors

Initializes the ROM Cartridges

Sets-up the video screen (24 x 40 text mode)

Boots the cassette if desired

Checks ROM Cartridge for disk boot instructions

Boots the disk if desired and a disk drive is attached

Transfers control to the ROM cartridge, and booted program.

Whenever the Reset key is pressed, the Operating System performs some, but not all, of the functions performed at Power-Up. The Operating System performs the following actions after the Reset key is pressed:

Clears the Operating System portion of RAM memory

Re-establishes all RAM interrupt vectors

Formats the Handler Address table

Initializes the ROM Cartridges

Sets-Up the video screen for 24 x 40 text mode

Transfers control to the ROM Cartridge and booted program

The remaining 2K of Operating System ROM is a floating point program which is not used by the other parts of the Operating System itself, but is available to non-resident programs such as BASIC, Calculator, PASCAL, etc. The following routines are among those found in the ROM program:

ASCII to floating point and floating point to ASCII conversion

Integer to floating point and floating point to integer conversion

Floating point log, exponent, and ploynomial evaluation

Floating point number clear, load, store and move


POWER SUPPLY

The 400 and 800 Power Supply have identical circuitry, with a few exceptions. (See Figures 1-13 and 1-15.) The Console Power Supplies receive 9Vac (J204 and J206, 400 and 800 respectively) from the external power adaptor (transformer) provides +5 Vdc, and +12 Vdc, and -5 Vdc for the Console. Both the 400 and 800 Power Supplies have two power ON/OFF switches, S202 and S203 for the 400 Console, and S20 1 and S202 for the 800 Console. S202 and 5201, respectively, are Power Interlock switches.

The RF signal is generated in both the 400 and 800 Power Supplies from the MOD signal received from the motherboard. It is routed through the A203, the RF MOD, to develop the RF output through.

A peripheral connector jack, J202 for the 400 Console and J204 for the 800 Console, provides the serial data-in/data-out port for the system. Devices are "daisy chained" together from this one output port. Each peripheral device is identified by a unique address, enabling all devices to reside on one output port.

Also contained on the 800 Power Supply board is the Monitor connector jack (J205). Present at J205 are the Composite video signals to drive a video monitor. The 800

· Power Supply board also contains switches S204 through S207. These switches are the System Reset, Option , Select, and Start, respectively •

. ROM CARTRIDGE

The Atari ROM Cartridge contains two ROM chips designed to provide a specific program application (See Figure 1-20). The 6502 microprocessor reads the information contained within the ROM chips by addressing memory locations 8000 through BFFF Hex. When the ROM Cartridges are inserted in the motherboard, they disable the RAM Memory address locations 8000 to BFFF, in 8K increments. The "left" ROM Cartridge overlays memory locations AOOO to BFFF, and the "right" ROM Cartridge overlays locations 8000 to 9FFF.

A_CCESSORIES

AC Power Adaptor

The AC Power Adaptor plugs into a standard wall outlet to provide the 9Vac used by the Consoles. The other end of the power adaptor plugs into the power jack on either Console.

AT ARI Home Comouters 1-22 PAL/UK

TV Switch Box

The TV Switch Box allows the Console to be connected to the 300 ohm RF antenna or 75 ohm cable inputs on a typical televison set.

'BASIC' Program Cartridge

The 'BASIC' Program Cartridge (provided) is a standard feature for both Consoles and contains the AT ARI BASIC Interpreter.


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PERSONALITY ROMS

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CHROMA, LUMINENCE & COlOR

MOTHERBOARD ATARI 400

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' 12 VOLT t1A REGUL-ATOR

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ADDRESS BUS

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~-

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REFRESH BUFFER

RASTIME -... "

CIRCUIT

RA5 BUFFER "

SK DYNAMIC RAM ATARI

RAS

TRI-LEVEL BUFFER

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~

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ADDRESS DEMULTIPLEXER

I

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t---

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16K DYNAMIC RAM ATARI

DELAY CIRCUIT

f

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8 RAM CHIPS

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(RIGHT) LO

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" TO .uP &: SYSTEM

GAME CARTRIDGE BOARD

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I

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COLOR TV

MONITOR

SDIO "- -.

ATARI HOME COMPUTER SYSTEM BLOCK DIAGRAM

COMP VIDEO & SOUND

810 DISK DRIVE

2

~ s D I

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4

400/800 CONSOLE

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1- R I 1 I .._ 1 820 40-COLUMN PRINTER

SDIO ...-

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D A T A

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c A B L E s

825 80-COLUMN PRINTER

SERIAL DATA 1/0

'

410 PROGRAM RECORDER

~

850 INTERFACE

COLOR TV SET

.. SDJO

830 MODEM

• 1 t t ~ I ~ 3-RS232 PORTS

1- 20MA CURRENT LOOP PORT

822 40-COLUMN PRINTER

SECTION 2

SILKSCREEN AND SCHEMA TICS

The following pages contain representative silkscreens and schematics for the AT ARI 400/800 Computer Consoles. Minor variations in design may be encountered depending upon the production date of the Console. These drawings provide all details required for an in-depth understanding of both the 400 and 800 Consoles.

AT ARI Home Computer 2-1

THIS PAC: ETTENTIONALLY LEFT BLANK

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TROUBLESHOOTING AND TESTING

OVERVIEW

This section describes the procedures to maintain, troubleshoot, and test the AT ARI q.oo/800 Computer Consoles. The section is divided into two major categories:

1. TESTS

2. TROUBLESHOOTING

TESTS

The following discussions pertain to the troubleshooting procedures required to checkout the AT ARI Lj.00/800 Horne Computer Consoles.

Equipment Needed

You require 6 basic pieces of equipment in order to analyze the failures of the ATARI Lj.00/800 Horne Computer Console. These items include:

• 15MHz oscilloscope

• Stand Alone Test Cartridge (SALT II)

• Peripheral Port Test Connector

• Hand Controller Jack Test Connector

• Television Set (properly adjusted)

• Small Tool Kit

ATARI Horne Computer 3-1

Testing With And Without The SALT II Cartridge

All tests are reviewed in this section. Procedures for the use of the tests are detailed in Section 5, 400 Diagnostic Flowchart, and Section 7, 800 Diagnostic Flowchart.

OVER VIEW OF TESTS A variety of test routines can assist you in identifying probable sources of problems within the computer console.

Power-Up Test

This test prepares the Console for the remainder of the tests. Should the Console fail this test, no other test results can be considered valid.

• Format: Connect the power adaptor to the Computer and the Computer to the television set. Make sure there is not a cartridge in the console --turn the POWER switch ON. The words ATARI COMPUTER - MEMO PAD should appear on the screen in the upper left corner.

Keyboard Test

This test verifies that all keys of the keyboard are properly functioning. This test also verfies that the POKEY chip's keyboard functions are operating properly. If one key fails, then the problem is likely the keyboard. If more than one key fails, you must perform further tests. (These tests are discussed later in this section.)

• Format: Depress each key of the keyboard. As you press each key, watch the screen to verify if the computer is echoing the key struck on it. Be certain to use the CTRL key with other keys. This checks special graphics functions not tested elsewhere. (See Figure 3-1}

RAM and ROM Test

This test verifies that the -CPU, RAM, and ROM chips are all properly functioning.

• Format: Due to the possible complexity of this test, it has been broken into four subsections.

1. Turn the POWER off, insert the SALT II cartridge (for the 800, use the left cartridge slot), and turn the POWER on. The SALT Header should appear on the television screen (See Figure 3-2). This verifies that the CPU, Operating System (OS) ROMS, and the lower RAM are functioning.

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ATAAI 400/800 STAND ALONE SYSTEM TEST

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Figure 3-2. SALT Header

2. If a green/yellow colored screen is returned, this indicates a probable OS ROM malfunction. Swap-out the set with a known good set (make certain to test after each ROM is replaced), this allows you to pinpoint the defective ROM.

3. If the words, SYSTEM F AlLURE appear on the television screen, this indicates that the lower RAM is not functioning. When this happens and a 400 Computer is under test, turn the POWER off, swap-out the RAM board with a known good one and turn the Power on. If the SALT Header is returned to the screen, this indicates a probable malfunction in the RAM board which was removed. Refer to the DIAGNOSTIC FLOWCHARTS, Section 5 and 7 for troubleshooting procedures.

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If the 800 Computer is under test, turn the POWER off and swap-out the front RAM Card with a know good one. Place the suspected defective RAM CARD into the number 2 RAM slot (the third slot behind the OS), and turn the POWER back on. This lets the SALT II cartridge troubleshoot the suspected RAM CARD. later in the DIAGNOSTIC FLOWCHARTS.

4. If RAM and ROM boards have been. swapped and the condition continues to persist, swap the CPU board with a known good board to isolate the problems.

***NOTE***

Once you have isolated the problem to either the RAM, ROM, or CPU boards, clean the board edge connectors and retest the boards.

The SALT II cartridge takes you through the next phase of tests. Use the SALT II cartridge to perform the following tests.

SALT II Menu

Figure 3-3 illustrates the SALT II menu of tests. The highlighted character is the command letter for each test.

ANYVIDEO li:BOOT B CCOLORBARS IIDTS PLAY ~~ves~~~ ~x~~±~oNs ~~~~T T~~~T zW~ST ~WITCHES !biGHT PEN ~~~fF~E~6M '~HELP Z PRODUCTION TEST HELP

Figure 3-3. SALT II Menu


Color Bar Test

This test verfies and allows for adjustment to the color circuitry. With SALT II properly in place, enter the command letter C and press RETURN. Figure 3-4 is a black and white representation of what your television display screen should look like.

SAME COLOR

Figure 3-4. Color Bar Test Screen

A 15-color rainbow scale is displayed above the reference bar with a single color bar below. The color bars directly above and below the reference bar should be the same color (golden rod). If not, proper adjustment of R309 makes the color bars above and below the reference bar identical.

Proper operation of the unit is indicated by you being able to make this adjustment and by consistent color within the entire span of each bar on the screen. Minor glitches on the edges of the color bars are acceptable. Leave this test on for at least 10 seconds in order to catch any intermittent problems, such as a bar momentarily changing colors or blanking out.

Any Video Test

This test verifies the console's ability to generate a video (TV) display. This test also checks for pattern sensitivity of the ANTIC chip.

By entering the command letter A and pressing RETURN, this test is activated.

Figure 3-5 illustrates the screen display for the Any Video Test. NOTE: Figure 3-5 is a black and white representation of a colored screen.

The screen should have a black background with eight vertical bars. Half of the vertical bars should be narrow, and the other half, much wider. A horizontal bar should appear across the top of the screen. From the left to right, the shade of color on the horizontal bar should change. On the right of the bar, two Vs should be displayed, right side up.


Figure 3-5. Any Video Test Screen

Gray Bar Test

This test verifies that the CTIA (GTIA) is generating three LUM bits.

By pressing the command letter G and then RETURN, this test activates.

Figure 3-6 illustrates the screen display of the Gray Bar Test. The screen is divided into eight equal sized horizontal bars. The bar at the top of the screen should be black and subsequent bars should progress to white at bar eight. The bars should lighten in even shades. The screen should be steady and unchanging. These lines may have minor glitches at their edges. A thin white line should always appear just over the top (black) bar. No color should appear anywhere on the screen. The areas above the top (black) bar and below the bottom (white) bar are of no importance to this test. This test should be left on for at least 10 seconds to ensure that there is no "flashing" of color or shifting of the gray bars.

Figure 3-6. Gray Bar Test Screen


Keyboard Test

This test verifies the Console's ability to accurately accept operator input from the keyboard.

By pressing the command letter K and RETURN, this test is activated. You are to press each of the keys EXCEPT, the SPACE BAR, CNTL and both SHIFT keys. Each letter pressed is returned to the display screen. Once this portion of the test is completed, hold down the CNTL key and press the letter A. The letters CTRL are returned to the screen. Now, hold down the left SHIFT key and press A. The word SHIFT is returned to the screen. By holding down the right SHIFT key and pressing A, the word SHIFT is again returned to the display screen. Finally, press the SPACE BAR and then, RETURN. The words KEYBOARD PASS or KEYBOARD FAIL appear on the screen below the keyboard test. If the SALT II cartridge detects any key failures during the test, the defective keys appear on the screen in the color red.

Switch Test

This test verifies the proper operation of the four Console Switches (START, SELECT, OPTION, and SYSTEM RESET). By pressing the command letter S and pressing RETURN, this test is activated. As you press each of the Console ·switches their names should be returned to the display screen. Upon pressing the final switch, the word PASS or FAIL is returned to the screen.

Tone Test

This test verifies the ability of the system to generate four sound registers through its sound generation circuits. Press the command letter T and RETURN. A prompt (question) is returned to the screen asking you which register you want to test. You must press the key with the number of the register you want to test (1, 2, 3, or 4) and then press RETURN.

The test generates eight tones in descending order. The first three tones are very high and may be inaudible to some people. Each tone begins at maximum volume and fades to minimum volume. It is necessary for you to enter a number for each additional test sequence. Make certain to test all four sound registers.

NOTE: The television volume control may have to be turned up in order for you to hear the first three tones.

Display Options

This function, which is not a test, displays a diagnostic matrix when used in conjunction with either the RAM TEST or the PORT TEST. It allows you to identify which ROM chip has failed when used with the VERIFY ROM TEST.

By pressing command letter D and RETURN you access to this function. The screen returns the prompt to enter a test format. To use the PASS/FAIL indicator, enter the command letter P and press RETURN. To display the ERROR TABLE, enter the command letter E and press RETURN. For the following PORT, VERIFY ROM, and RAM TESTs, press the command letter E and RETURN. The ~reen prompts you to enter the command letter S for a single test pass, or C for continuous test passes.

You are now ready for the three tests. To terminate any of the following three tests, press the SPACE BAR. NOTE: The RAM test continues its current test pass before it stops.

Port Test

This test verifies the ability of the computer system to communicate with the operator through the controller jacks and the peripheral I/O port.

The command letter P and RETURN activates this test. Make certain that the Peripheral Jumpers are in place, and press RETURN again. Figure 3-7 illustrates the Port Test Matrix Display. This figure is a black and white representation of a color television screen. The zeros should be a blue tint.

A 8898 8888 .e oo8o oooo b oooo goog E 0000 00 F 0000 0000 G 0 000 0 0 00 H 0000 0000

PORT TEST

Figure 3-7. Port Test Screen


ERROR COUNTER

TEST COUNTER

The four digit number in the lower-right corner of the display screen shows the number of tests completed. In addition, the four digit number above it in red is a error counter which indicates the number of times the test has failed.

If a failure occurs, a Red 1 is displayed in the matrix, this shows you the location of the errored condition. Table 3-1, Port Test Legend should be used to determine the cause of the failure condition. (Please note, a blinking 1 at location A, 5 does not indicate a failure.)

A passing condition for all test is indicated by a Blue 0 in that location (i.e., C, 0 or 04-). If the failed test passes on the next test pass, the Red 1 is replaced by a Blue 0. The error counter in the lower-right corner of the screen increments by one for each error •

Verify ROM Test

This test checks the Console's ROMs by performing checksum tests on them. By entering the command letter V and pressing RETURN you activate this test. The screen displays a checksum for each ROM and the value returned by the MATH PACK together with a PASS or FAIL indicator for each. Upon completion of the test, the screen displays VERIFY ROM and either PASS or FAIL for the entire test. This test can be used to pinpoint which ROM is failing. If you suspect a ROM is intermittently failing; run this test for 15 or 20 minutes.

RAM Test

This automatically uses six different tests to verify the operation of the RAM boards. Enter the command letter R and press RETURN to begin this test. A prompt is returned to the screen asking how many 8K blocks of memory to check (maximum of five). Type the number of memory blocks in the unit and press RETURN. (Remember that, 1 equals each 8K RAM card and 2 equals each 16K RAM.)

The computer displays the amount of RAM it is testing. If the amount is not what you entered, one of two conditions may exist: 1) the unit does not contain the amount of memory you thought it did; or, 2) the unit has defective RAM card(s).

Figure 3-8 illustrates a defective RAM test system response screen. The four digit number in white at the bottom right of the screen indicates the number of tests completed. A red four digit number directly above this is used to count the number of failures.

Table 3-1

Port Test Legend

= u = AT ARI Home Computer 3-13

As was the case with the PORT Test, failures appear as Red ls in this display. If the pattern is in a state of constant change, one of the RAM boards probably has a set of defective 74LS158 chips. If you replace the chips make certain that the new chips have the same manufacturer and the same date code. This ensures compatibility. To determine which board(s) is(are) defective, perform the following three steps:

1) Turn off the power.

2) Remove one of the boards.

3) Start the test from Display Options, page 3-10.

If the pattern is stable, look at line B, Columns 4 thru 7 to determine which board is defective. (See Table 3-2).

688~ ~ 21 8 o 1 oo o88o 00011 0000 0000 11000 0000 0000 RAM TEST

TESTINCa 40K

0004 0004

Figure 3-8. RAM Test Screen

ERROR COUNTER

TEST COUNTER

Table 3-2

Defective RAM Boards

Defect

Indicator Description

B,4 1st 8K Block

B,5; or 2nd 8K Block

B,4 and B,5

B,6; or 3rd 8K Block

B,4 and B,6

B,5 and B,6; 4th 8K Block

or

B,4, B,5 and

B,6

B,7; or 5th 8K Block

B,4 and B,7

Compare rows D and E, if there is a difference between any one column use Table 3-3 to identify specific defective chips. If more than one column is different replace the 74LS244 chip and retest.


M Test

Table 3-3

Defective RAM Identifier

Difference

Column

0

1

2

3

4

5

6

7

Description

Z512

Z511

Z510

Z509

Z508

Z507

Z506

Z505

This test verifies the proper operation of the Video Buffer Chip (400-Alll and 800-Al03).

To perform this test, turn off the Console POWER, remove the SALT II cartridge and insert the BASIC cartridge. Turn the POWER on and perform the following three key entries:

l) Type: NEW and press RETURN.

2) Type: IO?"M"; :GOTO 10 and press RETURN.

3) Type: RUN and press RETURN.

The system starts printing Ms, character after character, line after line. If any are blurred and/or run together, the Video Buffer Chip or another of the discrete components in the video summing circuitry on the mainboard is probably defective.

To stop this test, press BREAK or SYSTEM RESET.

Star Raiders Test

If the Console has effectively passed all previous tests and performs this game without any visible problems, it is almost certainly operating properly.

Turn POWER off, remove the BASIC cartridge, ~sert the STAR RAIDERS cartridge, and turn the POWER on. Now, go through the game's various screens and functions (play the game).

Shake Test

Disconnect the unit, grasp it firmly with both hands and shake it vigorously for approximately 10 to 20 seconds. DO NOT HIT or STRIKE the unit against the bench or other hard object without having your fingers between the unit and the surface being struck. Reconnect the unit and turn the POWER on. Perform the MEMO PAD test to make certain that none of the connections, boards, and/or components have become unseated, and that the unit is properly operational.

Burn-In

After the unit has successfully passed all the previous procedures and is operating correctly, it is ready for BURN-IN.

Operating the system on BURN-IN continuously for a recommended 24-hour period. Use one of the following three methods. ·

1) Insert the SALT II cartridge and run it with continuous RAM or PORT test.

2) Insert Star Raiders or another game cartridge and run it.

3) Perform the 400/800 Console Test (810 Disk Drive required).


At the end of the BURN-IN period, check the unit again for any malfunctions, using SALT II Test checks. Once the unit has passed all the final checkout procedures, it is ready to be returned to the customer. ·

DESCRIPTION OF THE OTHER FUNCTIONS FOLLOWS:

Production Test

Command letter "Z". This function allows you to run through the series of test semiautomatically by pressing the space bar. It will ask you the serial number of the u.nit and print it out on a printer with the word PASS or FAIL.

Boot B

This function is not used at this time.

Examine

Command letter "E". This allows you to test a specified RAM location (address).

Adjust

Command letter "J". This is used to debug audio and serial port control lines (Motor Go & Command) on the system console. A fixed frequency audio signal is produced while PIA ports are exercised.

SUMMARY

This section has taken you step-by-step through all the tests and general troubleshooting steps required for evaluation of a suspect defective ~00/800 console. Now read through the section, DISASSEMBLY and ASSEMBLY, before going on to Section 5, Diagnostic Flowcharts, and Section 7, 800 Diagnostic Flowchart.


SECTION 4

DISSASSEMBLL Y /ASSEMBLY MAINTENANCE

AT ARI 400 HOME COMPUTER CONSOLE - DISASSEMBLY

The following describes the procedures required to disassemble the 400 Computer Console. Read the following NOTES first, then proceed.

***NOTE***

.1. Be very careful about mixing screws. Plastic and aluminum parts can be easily stripped if the wrong size screw is used.

2. Excessive torque on screws can strip the plastic and aluminum parts.

• Plastic - 6-inch pounds torque maximum.

• Aluminum - 1 0-inch pounds torque maximum.

3. Protect ·the plastic surfaces of the console by working on. a soft surface (a grounding pad works very well) when the Console is turned over, bottom up.

4. Use ALL static control precautions when handling any printed circuit board.

KEYBOARD AND POWER SUPPLY ACCESS

To remove the top cover, perform the following steps in the exact order given.

• Turn the unit side down.

• Remove four screws from the bottom cover. (See Figure 4-1.)


f BOTTOM COVER

Figure 4-1. 400 Console, Bottom Cover Screw Location

• Turn unit upright.

• Unhook top cover from keyboard (see Figure 4-2).

• Open cartridge door.

• Lift top cover off.

Figure 4-2. 400 Console Top Cover Removal

KEYBOARD REMOVAL

To remove the keyboard, perform the following steps in the exact order given. Use Figure 4-3 as a reference for the following two steps.

• Remove single keyboard screw.

• Lift left end of keyboard and disconnect keyboard ribbon cable.


Figure 4-3. 400 Console, Keyboard Removal

POWER SUPPLY REMOVAL

To remove the power supply, perform the following steps in the exact order given. Use Figure 4-4 as a reference for the following four steps.

• Disconnect RF cable from power supply.

• Remove two screws from power supply.

• Gently pull power supply away from casting 1/4 inch and lift out the interlock switch plunger.

• Lift the power supply straight-up off the motherboard connector pins •

.!lT.dOT U-_...""' r- ....... -·•+~ ...

\ \

' ' '

I I POWER SUPPLY

I I I I I I I I I

MOTHER BOARD CONNECTOR

Figure 4-4. Atari 400 Console, Power Supply Removal


CPU, RAM, AND MOTHERBOARD ACCESS

To remove the module assembly, perform the following steps in the exact order given. Use Figure 4-5 as a reference for the following two step.

• Disconnect and remove speaker assembly.

• Lift module assembly out of the bottom cover.

CPU AND RAM REMOVAL

To remove the CPU and RAM printed circuit boards, perform the following steps in the exact order given. Use Figure 4-5 as a reference for the following six steps.

• Close and latch the cartridge door.

• Set the module on its back.

• Remove the eight screws from the bottom shield and lift off the shield.

• Lift the motherboard assembly out of the aluminum casting.

• Carefully unplug the CPU and/or RAM boards.

• Unhook and remove the plastic cartridge guide.

CPU BOARD

SPEAKER ASSENBlY

'

ALUMINUM CASTlNG

MOTHER BOARD

SOTTOM SHIELD

Figure 4-5. Atari 400 Console, Module Assembly

This concludes the disassembly of the 400 computer console.


A TARI 800 HOME COMPUTER CONSOLE - DISASSEMBLY

The following describes the procedures required to disassemble the AT ARI 800 Home Computer console. Read the NOTES on pages 1 thru 3 first, and then proceed.

ACCESS TO RAM BOARDS AND ROM BOARD

To gain access to the RAM and ROM boards, perform the following steps in the exact order given.

Remove the cartridge door assembly. Use Figure 4-6 as a reference for the following eight steps.

• Turn the system power switch to the OFF position.

• Open the cartridge door.

• Turn the cartridge door clamps towards the outside of the Console.

• Lift the cartridge door assembly 1/4 inch, pull it towards you, and lift it off.

Remove the RAM and ROM modules.

• Lift out the RAM module(s).

• Lift out the ROM module.

• Lift out any cartridge(s).

• Turn cartridge door clamps to original position.


c;..R.TR1DGE oOOR p..sse.Mf>'-Y

figure 4-6. Mari &00 Console, cartridge ooor p.,ssemblY Removal

ACCESS TO POWER SUPPLY AND KEYBOARD ASSEMBLY

To gain access to the power supply and keyboard assembly, perform the following steps in the exact order given.

REMOVE TOP COVER

Use Figure 4-7 as reference for the following three steps.

• Turn unit upside down.

• Remove five screws from the bottom cover.

• Tilt the back of the bottom cover up and towards you to remove it.

I BOTTOM COVER

I ~

'

Figure 4-7. Atari &00 Console, Bottom Cover Removal

AT ART Hnrn-=- rnrnnoo1"-=-r

REMOVE THE PCB MODULE

Use Figure 4-8 as a reference for the following seven steps.

• Remove two screws from the aluminum casting flange.

• Remove the single screw from the power supply board (lower left corner).

• Disconnect speaker cable, remove speaker and set it aside.

• Turn the unit over.

• Pull the back of the console top cover assembly to 90° separating it from the PCB module.

• Reach over the top cover and unplug the keyboard's ribbon cable.

• Set the top cover assembly aside.

• Lift the power supply board straight up.

• Remove plastic cartridge guide by unhooking the latches from the bottom side of the motherboard.

MODULE ASSEMBLY

SPEAKER HARNESS

Figure 4-8. 800 Console, Module Assembly Removal


REMOVE THE POWER SUPPLY

Use Figure 4-9 as a reference for the following five steps.

• Unplug the RF cable from the power supply board.

• Unplug the power supply harness.

• Remove three screws from power supply board.

RF CABLE

-) ' I

POWER SUPPLY

·~

MOTHER BOARD CONNECTOR

WIRE HARNESS

Figure 4-9. Atari 800 Console, Power Supply Removal


ACCESS TO CPU PRINTED CIRCUIT BOARD

Use Figure 4--10 as reference for the following four steps.

• Turn the unit upside down.

• Remove the nine screws from the lower shield.

• Lift the motherboard and lower shield out of the aluminum casting.

e Remove the CPU PCB.

Figure 4--10. Atari 800 Console, CPU Printed Circuit Board Removal

ATARI Home Computer 4--13

ACCESS TO MOTHERBOARD

Use Figure 4-11 as reference for the following three steps.

• Carefully slide the tip of a screwdriver underneath the motherboard next to the nylon clip. Gently raise the handle of the screwdriver, prying off the nylon clip. Repeat this operation for the remaining three nylon clips.

* * * CAUTION * * * Be careful not to bend any of the pins on the Motherboard Connector.

Do NOT allow the tip of the screwdriver to damage traces.

• Lift the motherboard off the lower shield.

• Remove the plastic cartridge guide by unhooking the four latches from the bottom side of the motherboard.

CARTRIDGE GUIDE

I I

$

BOTTOM SHIEl.O

Figure 4-11. Atari 800 Console, Motherboard Removal

KEYBOARD REMOVAL

Use Figure 4-12 as reference for the following three steps, to remove the keyboard from its cas~.

• Turn the top cover upside down.

• Remove four screws from the four corners of the keyboard.

• Lift the keyboard out of the top cover.

This concludes the disassembly of the Atari 800 Home Computer console.


KEYBOARD

Figure 4-12. ATARI 800 Console, Keyboard Removal

AT ARI 400 HOME COMPUTER CONSOLE ASSSEMBL Y

The following outlines the steps required to reassemble the Atari 400 Home Computer console and it's related printed circuit boards.

MODULE ASSEMBLY REASSEMBLY

Refer to Figure 4-5 as reference for the following five steps.

• Snap the cartridge guide into the motherboard Ot only goes in one way).

• Insert RAM and CPU printed circuit boards into the motherboard with the component side of the PCBs facing away from you. Before reassembling the PCBs, make certain that they have been cleaned and lubricated. (Refer to pages lJ.-21 and lJ.-22 for instructions.)

• Set aluminum casting upside down, invert the motherboard and gently lower it into the casting.

***NOTE***

The CPU PCB must fit into the guides in the aluminum casting.

• Install lower shield and secure it with eight screws.

• Install the module assembly in the bottom cover.

KEYBOARD INSTALLATION

Refer to Figure 4-3 as a reference for the following three steps.

• Plug the speaker cable into the motherboard (no Polarity) and set the speaker into the bottom cover.

• Plug the keyboard ribbon cable into the connector on the motherboard.

• Gently lower the keyboard over the Power-ON LED and guide posts on the aluminum casting.

POWER SUPPLY INSTALLATION

Use Figure 4-4 as reference for the following five steps.

• Align the power supply over the motherboard connector pins and bottom cover guide posts and gently press it down.

• Install the interlock switch plunger into the aluminum casting. Make certain that the lower end of the plunger is positioned over the inter lock switch and the plunger shaft rides in its notch in the power supply heat sink.

• Insert and tighten the two power supply mounting screws.

* * * CAUTION * * *

Be sure that the RF cable is not trapped under the module assembly.

• Route the RF cable through its slot in the power supply board and plug it into the power supply jack.

• Insert and tighten the single keyboard mounting screw.

A tari Home Computer 4-17

TOP COVER INSTALLATION

• Open the cartridge door.

• Slide the top cover down over the open cartridge door and the power-ON LED (Refer to Figure 4-2)

• Guide the top cover locator pins into the keyboard holes and snap the top cover hood under the keyboard.

• Close the cartridge door and set the console on its face.

• Align the top and bottom covers and insert the four screws into the bottom cover and tighten (Refer to Figure 4-1 ).

ATARI 800 HOME COMPUTER CONSOLE ASSEMBLY

The following outlines the steps required to reassemble the Atari &00 Home Computer Console and its related printed circuit boards.

KEYBOARD INSTALLATION

Refer to Figure lf.-12 as reference for the following two steps.

• Set the top cover upside down with the keyboard in it.

• Insert and tighten the four mounting screws.

***NOTE***

Check the spacebar and keys to make sure that they are not binding before proceeding.

MOTHERBOARD INSTALLATION

Refer to Figure 4-11 as reference for the following two steps.

• Snap the plastic cartridge guide into the top side of the motherboard.

• With the motherboard right side up, snap on the four nylon clips of the lower shield. Make certain all four clips are firmly seated.

CPU PCB INSTALLATION

Refer to Figure 4-10 as reference for the following five steps.

• Plug in CPU PCB. Make certain the component side of the board faces away from the plastic cartridge guide and is firmly seated.

• Turn the aluminum casting over •.

• Turn the motherboard upside down and set the motherboard and lower shield into the aluminum casting.

* * * CAUTION * * * Make certain that the CPU PCB sets in its slot in the aluminum casting.

• Insert and secure the nine screws in the lower shield.

• Set the console on its feet.

POWER SUPPLY INSTALLATION

Refer to Figure 4-9 as reference for the following six steps.

• Carefully align the power supply connector with the motherboard pins.

• Set the power supply down over the guide pins on the aluminum casting and gently press down.

• Attach strip connector between power supply and motherboard.

• Insert and tighten the three screws of the power supply board.

• Recommend the power supply harness.

* * * CAUTION * * * Plug the power supply harness cable from the motherboard to the power supply pins with the orange or purple wire towards the aluminum casting.

• Plug the RF cable, the short end, into the power supply jack.

Atari Home Computer 4-19

MODULE ASSEMBLY INSTALLATION INTO TOP COVER

Refer to Figure lf.-8 as reference for the following six steps.

• Set the top cover upside down.

• Invert the module assembly and lower it into the top cover. Turn the cartridge door latches toward the inside in order to clear the top cover.

* * * CAUTION * * * Make certain that the RF cable is not trapped between the power supply board and the top cover standoff (upper left screw hole).

• Lift the motherboard one-inch out of the top cover and plug in the keyboard harness.

• Insert and tighten two screws into the front holes of the aluminum casting and into the top cover.

• Set the speaker into its receptacle foam side down.

• Connect the speaker cable to the jack (no polarity).

BOTTOM COVER INSTALLATION

Refer to Figure 4--7 as reference for the following four steps.

• Align the bottom cover with the four-hand-controller ports.

• Seat bottom cover firmly, all the way around. Make certain the RF cable exists through its hole and is not trapped between the covers.

• Insert and tighten the five bottom cover screws.

• Set the console right side up.

li•--= L.J--- ~---···--

RAM AND ROM MODULE INSTALLATION


• Insert the ROM Module in the slot closest to the keyboard. • Insert a maximum of three RAM modules in the remaining slots.

CARTRIDGE DOOR ASSEMBLY


• Set the cartridge door assembly on the top cover and slide it to the rear of the cover. This action engages the tab of the door into the aluminum casting.

4P Lock the cartridge door assembly down with the two clamps next to the program cartridge slots.

PCB CONTACT CLEANING AND LUBRICATION

The following instructions explain the procedures required to properly clean and lubricate the PCB contacts of the CPU, RAM and ROM boards once they have been removed from the motherboard.

Tools Required

• ZEP Safety Solvent or Isopropyl Alcohol

• Dust-Free Cloth

• Acid Brush

• Board Cleaning Brush

• Lipriplate (DS-ES Lubricant)

Procedures

1. Inspect the PCB contact for flux, dirt, foreign material, and deeply serated contact fingers.

2. Moisten the dust-free cloth with solvent and clean the finger contacts. Make sure both sides of the contracts are clean and free of residual lubricant and contamination.


* * * NOTES * * * Avoid touching the contact after cleaning.

3. If corrosion or residue remain on the contacts it is necessary to clean the contacts further using the board cleaning brush. Use the following procedures.

• Moisten the board cleaning brush with solvent and firmly brush the contacts. Four to six strokes is enough. Be careful and do not touch any other part of the board.

• Perform step 2 again.

4. Dip the acid brush into the lubricant.

5. Apply an even coating of lubricant to the contact fingers on both sides of the PCB. The coating of lubricant should be thick enough to protect the contact fingers from corrosion. Do not spread the lubricant to areas other than the contact fingers.

VISUAL INSPECTION

The following instructions explain specific areas to check on the Consoles for damage or abuse.

1. Inspect the controller jacks and peripheral jacks for broken and/or bent pins.

2. Check the RF cable for cracks in the insulation, bare, or pinched areas.

3. With the console power ON and MEMO PAD on the screen, open the cartridge door to check the interlock switch. Using a small blade screwdriver, press the plunger down. Release the plunger and see that it is returns to its open position. In its open position the console is powereddown.

4. Inspect the cartridge slot for foreign objects or damage.

5. Inspect the power jack for bent and/or damaged pins.

If any of the above damage is found, repair the defective area. Use the disassembly and assembly instructions at the beginning of this section.


SECTION 5

400 DIAGNOSTIC FLOWCHART

The Diagnostic Flowchart is intended to be easy to use and the primary aid when troubleshooting the AT ARI 400 Computer Console. Follow the prompts in the order presented. When a question is asked, follow the line from that box which best applies to the unit's situation. The flowchart leaves little to chance, it tells you when to perform a specific test and when to replace components.

Swap Out Procedure

At many places in the diagnostic flowchart, a box tells you to "swap-out" a chip or a number of chips in a particular order. The "swap-out" instruction means that you should replace the indicated components (one at a time) with a known good component of the same type. The 400 should then be tested with the new, known-good component in place to see whether the "swap-out" solved the problem being checked. If the swapout did not fix the problem, the known-good component should be removed, and the original component reinserted. In ti)is way, you avoid needlessly replacing good components.

CAUTION:

Extreme care should be taken when handling the integrated circuit chips. They are all ~ sensitive to static electricity and can easily be erased by careless handling. Always keep the chips in their plastic carrier tubes or on conductive foam when not handling them. Make certain you are well grounded when handling the chips. Atari strongly recommends that you wear a conductive grounding band (which ties from your arm to ground) when handling the chips.

The chips are also susceptible to damage from stress when being removed from or inserted into the sockets. Always use a chip-puller when removing the chips. Do not pry the chip out with a screwdriver or any other tool.

Failure to follow the above guidlines results in unusally high chip failure rates and extra expense.


400 POWER-UP

CATASTROPHIC FAILURES AND BASIC OPERATIONS

Is a clear MEMO PAD YES Test special graphics on the screen mode of keyboard

using Figure 3-1

NO

Go to START, Pass YES -~ Go to POWER-UP,J next page I PART II, Page S-8

NO

Note failures; to be used later \vith

keyboard test

ATARI HnmP l.nmnuter 5-2

400 POWER-UP


SNOWY SCREEN

-- STARV

~ I Is the screen snowy I YES Check, adjust, or

replace AC power adaptor, channel select switch and

TV switchbox

NO

I Go to Black/Gray I Is a clear MEMO PAD! YES I Go to POWER-UP~ Screen, Page 5-4 on the screen j PART II, Page 5-81

NO

Does Power Supply NO . Check, repair, or Board, J20 1 , Pins 5, replace the following: 6, and 7, have +Sv

CR206-CR209, replace 1N4001 type diodes

YES. 1with 1N5391 (C017988)

Does voltage reg-ulator (A202) have

NO Is there a good +Sv ground .connection at

Check C208, C209, Pin 1 of RF Module R203, and 5202 -

replace if defective

YES !

I. Repair I YES Is the RF Module Is a clear MEMO PAD

I mistuned or defective on the screen

NO 1 NO

Is a clear MEMO PAD I NO Go to Black/ Gray I on the screen i Screen, Page 5-4

YES

Go to POWER-t.JP, ! PART II, Page 5-8 •.


YES

400 POWER-UP

CATASTROPHIC F' AlLURES AND BASIC OPERATIONS

BLACK/GREY SCREEN

-~--

I I th bl k 1 YES Check Power Supply ' e ''reen a< ~ Board for' or gray

Is there -Sv on J201 NO Check, repair, or NO ~ Pin 18 replace the following:

CR206 - CR209 -I replace 1N4001 type IGo to GREEN I YELLO YES

I SCREEN, Page S-6 diodes with 1N5391

(C017988)

CR201 - CR203, and C201. C202, and C210

Is there +12v on NO Check, repair, or J201, Pin 2 replace the following:

Voltage Regulator

YES (A201), CR204 and

C203 - C205

Check the CPU Board for:

NOTE 1 ,/ Clock Circuit (see

/ NOTE 1)

See Table S-1, start Chip Reset Voltages at the top of it and

trace back until clock Is there +Sv on NO Repair signal appears, A302, Pin 36 and

indicating which A303, Pin 30 component has faile·d.

YES

Replace CTIA/GTIA ( A301)

Is a clear MEMO PAD\ YES Go to POWER-UP, J on· the screen PART II, Page S-8

NO

l Go to C, next page: I

1'\~1\~T TT ____ i""""--- .. ..r..-- " ,,

400 POWER-UP


BLACK/GREY SCREEN(cont)

On the Motherboard

Swap-out Al03, Alll Zl03 - Zl05, Ql03,

Ql04, and XlOl

screen

NO

Check and replace discrete components

in video summing circuitry

on the screen

NO

Go to GREEN/Yf+~OW SCREEN, Page 5-6

ATARI Home Computer

Go to POWER-UP, PART II, Page 5-8

5-5

40•J PO WEi'.- U?

CAT ASTROP'HIC FAILURES AiJD B1A3IC OPERAT!Oi'TS

GREEN/YELLOW aCREEN

Is there a defective RAM card in the

YES Repair

Unit (check lowest RAM slot first)

cc NO

Swap-out ROMs F(Al03), E(Al04),

and D(AlOS)

I

Is a clear MEMO PADI YES Go to POWER-UP, J on the screen PART II. ~age S-8

NO

Swap-out the following A303,

and Z303, and Z304

Is a clear MEMO PAD YES Go to POWER-UP, on the screen ' PART II, Page S-8 ' '

NO

Go to SOLID BLUE SCREEN, Page S-7


400 POWER-UP

CATASTROPHIC F AlLURES AND BASIC OPERATIONS

SOLID BLUE SCREEN

CS:TART ../ Are the words - YES Go to POWER-UP

MEMO PAD on the screen

PART II, Page S-8

@) NO

Swap-out the POKEY (AlOl) chip

Is the screen s.triet1y NO Black and White I

YES

Swap-out Q107 and XlOl on Motherbaord

Is a clear MEMO PAD NO Call AT ARI Tech Linel on the screen Specialist

Inside California ! YES (800) 672-1466 !

Outside California

Go to flOWER-UP, (800) 538-1535

PART II, Page 5-8 (800) 538-1536


CsTART

Turn power OFF, Insert SALT II

Cartridge, and turn power ON

Does screen look YES like Figure 3-2

See NOTE 2

NO

Is there NO color or YES are the colors off

NO

Is the screen solid YES green, yellow, or

red

NO

Repeat POWER-UP • PART I, Page S-2

400 POWER-UP, PART II

RAM:

TIA:

ROM:

Go to COLOR ERR: BAR Test, lia.ge 5-9

Reseat SALT II Cart:t•id,ge and retest

NOTE 2

could be SK, 24K, 32K, oe

16K, 40K

could be NTS C or ·PAL

could be -MATH:NTSA: MATH:NTSB:

NTSA NTSB

ALA ALB

MATH:PALA:P MATH:PALB:P

is displayed f or any nfy error bad ROM, ve ·

condition via :::\.OM Test, Pa

VERIFY ge s-

Does screen look YES I Go to COLOR J like Figure 3-1 lBAR Test, PageS-9

COLOR BARS

,.-START~

J Does MENU appear NO Repeat POWER-UP, l (Refer Figure 3-3) Page 5-2

@-- YES

Press C and RETURN

Does screen look YES Go to TIA, Page5-10 like Figure 3-4 I I

NO

Can you adjust R309 NO Go to COLOR BAR to the proper color TROUBLESHOOTING, ·

Page 5-10

YES

Adjust R309

I Does screen look YES Go to TIA, Page 5-j like Fi ure 3-4 I I

0

NO

Go to COLOR BAR TROUBLESHOOTING,

Pa~<:e 5-10


400 COLOR BAR

TROUBLESHOOTING

CsTART

Swap-out A301 and A302, on CPU Board

Does screen look like Figure 3-4

NO

Swap CPU Board

Does screen look like Figure .3- i:

NO

Swap-out Alll, Ql07 on Motherboard


NO

Go to next page

ATARI Home Computer

YES Go to TIA, Page 5-13~ I

YES Trace color circuitry on CPU Board.

Make cetain to check color delay circuit

and R309

YES I Go to TIA, Page 5-13 -,

5-10

400 COLOR BAR

TROUBLESHOOTING (cont)

Verify that each of the following levels and/or signal wave forms exist' before proceeding to the next step. Use SALT II, COLOR BARS, locked into the

1--....;.;..;;;..---l Swap-out XlOl, Ql03 oscillation at Rl58 and Ql04 on Motherboard. Refer Figure

YES

Is there input NO Trace circuit back to signal to base of previous step

Ql07 Refer Figure

YES

NO Trace circuit back to previous step

YES

Is there signal at NO Trace circuit back to Jl07, Pin l Refer 1------t previous step Figure

YES

Go to next page


ATARI Home Computer

400 COLOR BAR


Are the following present Refer

Figure

+5v on Modulator Pin 5

Signal on Modulator Pin 4


YES

Specialist

Inside California (800) 672-1466

Outside California (800) 538-1535 (800) 835-1536

5-12


Go to TIA, Page 5-18

TIA TEST

(START

Press I and RETURN

Does NOT GTIA YES Go to GRAY BAR I appear on screen Test, PageS-141

NO

Is there a color YES Go to GRAY BAR rainbow on the Test, Page 5-14

screen -

~'GG\ NO

Replace GTIA ( A301) on CPU Board


ATART 1-inrn.,. rnrnntti·.,.,.

400 GREY BAR

Press G and RETURN

Does screen look YES like Figure 3-6

NO

Go to 400 GREY BAR TROUBLESHOOTING,

Pa e 5-15

"i_lli

400 GREY BAR

TROUBLESHOOTING

CsTARV

Swap-out A301 and A30Z, on CPU Board


NO

Swap CPU Board


NO

Swap-out Alll, Ql07 on Motherboard


NO.

Go to next page

I

I


YES Go to ANY VIDEO, I Page 5-18



and R309·

. YES Go to ANY VIDEO,

I Page 5-18

II -::11, ..

::I I: :::I

:;;' .. -

ATARI Home Computer

400 GREY BAR


Verify that each of the following levels and/ or signal wave forms exist' before proceeding to the next step. Use SALT II, COLOR BARS, locked into the mode.

Is there 3. SSMHz 1---'N-.0-...-; Swap-out XlOl, Ql03 oscillation at Rl58 and Ql04 on 'Motherboard. Refer Figure

YES


Ql07 Refer Figure

I ~

YES

:::::1 ' ~ Is there output NO Trace circuit back to signal from collecto previous step

on Ql07 Refer Figure

j YES

Is there signal at NO Trace circuit back to Jl07, Pin 1 Refer pre.vious step

~ Figure

YES

Go to next page

5-16

AT ARI Home Computer

400 GREY BAR



+Sv on Modulator Pin 5


Signal on Modulator Pin Z

YES


NO

Call ATARI Tech Line Specialist



5-17

NO i Trace circuit back to l I previous step

YES I Go to ANY VIDEO.,

I Page 5-18

.

400 ANY VIDEO

Replace ANTIC ( A302) on CPU

Board

NO

NO

Go. to 400 ANY VIDEO TROUBLESHOOTING,

Page 5-19

AT ARI Home Comouter

YES

5-18

400 ANY VIDEO

TROUBLESHOOTING

CsTARI.

Swap-out A301 and A302, on CPU Board


NO

Swap CPU Board


NO

I Swap-out Alll, Ql07 on Motherboard

I Does screen look like 11'igure 3-5

NO

Go to next page

ATARI Home Computer

YES. Go to KEYBOARD, I Page 5-22



and R309

YES Go to KEYBOARD, Page 5-22

5-19

400 ANY VIDEO


Verify that each of the following levels and/or signal wave forms exist· before proceeding to the next step. Use SALT II, COLOR BARS, locked into the

Is there 3. 58MHz 1-....-o...;;;..--; Swap-Qut XlOl, Ql03 oscillation at Rl58 and Ql04 on Motherboard. Refer Figure

YES


Ql07 Refer Fig

YES

Is there Trace circuit back to signal from previous step

on Ql07 Figure

YES

Is there signal at NO Trace circuit back to Jl07. Pin 1 Refer previous step Figure

YES

Go to next page

AT ARI Home> C:omn11te>r 5-20

400 ANY VIDEO



Are the following present :1efer

Figure

+5v on Modulator Pin 5


Signal on Modulator Pin Z

YES

Specialist


Outside California (800) 538-1535

5-21

NO Trace circuit back to 1----1 previous step

Go to KEYBOARD,. Page 5-ZZ

KEYBOARD

l Press K and I RETURN

I Do keyboard test J ~

~s VF.~ J PASS I

NO

I Did same keys fail as I NO in POWER-UP, PART Ij

YES

I Was it all or just some I ALL of the keys I

SOME

l Replace keyboard I

• YES I PASS I I

ILL I yo I Swap-out AlOi,

and 2104 Zl03,J

\Go to TO~-~;:~ST ,I .., YES J PASS J Page 5-24 J l

NO

l Go to next page

'


TYPICAL KEYBOARD

OUTPUT

Sample made from Z104, Pin 14 ~th W key depressed.

SCOPE: . ~/DIV, .5mS/DIV SYNC: ---cHI, + Trigger

ATARI Home Computer

KEYBOARD (cant)

Troubleshoot, using following information

and Keyboard schematic, Page 5-~

I Pass

NO




5-23

TYPICAL DECODER

OUTPUT

Sample made from Z104, Pin 3 with

W key depressed

SCOPE: --:-i'V/DIV, .2mS/DIV SYNC: -cHI, + Trigger

L~l

YES l Go to TONE TEST, I Page 5-24

'"""' ~MMI

Test remaining YES three voices ~ -

PASS NO

YES

Go to CONSOLE SWITCH TEST,

Page 5-28

ATARI Home Comouter

400 TONE TEST

CsTART~

Press T and RETURN

Enter voice number to be tested (1-4)

and Press RETURN

Did you hear all eight tones or speaker clicks*

NO

Replace POKEY ( A101) and retest

PASS

NO

Lock SALT II into CONTINUOUS MODE,

restart test on VOICE 1, and scope Pin 37 (AUD) of A101

Go to next page

5-24

1---

YES

*The first two tones are very 1

high in frequency; they may be inaudi ble to som

thus, ~ ears. The TV spe from the DC level s

aker clicks hifts can J

one. be heard for each t

~o to START, J this page

This re-runs the first two steps of this

test


400 TONE TEST (cont)

Is there a frequency NO shift as the frequency

of the tone lowers and amplitude decays

to Ov

SCOPE: ~/Div 1 .5mS/Div

SYNC: --+ CHl

YES

Press J and RETURN

Is the screen black NO with no sound

YES

Press SPACE BAR

Did you hear a NO I single test tone I

YES

Press SYSTEM RESET I T I RETURN I

11 and RETURN

PASS I NO

YES L Go to CONSOLE SWITCH TEST I

Page 5-28

5-25

Go to D1 next page ~

Call AT ARI Tech Line Specialist


Outside California ( 800) 538.-1535 (800) 538-1536


Is Rl60 (lK) shorted YES Repair and re~s-;·j

NO

Are Cl64 (.luf). Cl79 (.luf), Rl61

YES Repair and retest

( lSK) or Rl66 ( 6. SK) open

NO

Are Cl84 ( .OOluf) or YES Repair and retest Rl70 ( 4. 7K) shorted

or open

NO

Can you verify the YES Verify input to Audio following:

Mixer by connecting 1) 4,SMHz oscillation scope ( .SmS/Div,

by connecting a SmV I Div) to collector scope to the emitter of Ql06

of QlOS

2) A sine wave :::::; 2.3 ~

centimeters @

I Are waveforms No .lus/Div and same as AlOl, Pin !Return to START, I ZOmV/Div whi<h I

equals ~ 4. SMHz : 37 (except wave- l Page 5-24 form is rounded, not

3) Can you adjust LlOll square) to equal 4. SMH z I,

l

YES NO

Is there output on NO I Replace Ql06 andl Repair and retest I Lll8 (use scope I retest

( .SmS/Div,SOmV/Div)

YES

r Go to next page __j

l!.TdDT U--- r----··•-- "' ...,,


Adjust A203 to Ch3, verify TV is tuned

to Ch3 and fine tuning is adjusted to

a clear picture and turn the volume up

Retest

PASS NO Call AT ARI Tech Line! Specialist i

YES Inside California (800) 672-1466


Re-run remainder of (800) 538-1536 tone test for other

three voices

PASS NO

YES

Go to CONSOLE SWitCH TEST,

Page 5-28


400 CONSOLE SWITCH TEST

START:>

Press S and RETURN

Press each ( 4) Console Switch

PASS YES Go to ROM Test, I Page 5-29

e NO

Does console speaker NO Are Rll9 - Rl22 or YES I Replace and retestj "BEEP" when any Cl21 - 124 shorted I Console Switch is or open

pressed

... YES NO -Replace CTIA/GTIA

( A301) on CPU Board and retest

PASS YES Go to ROM Test, ! I Page 5-29 l

NO

Did a single YES switch fail

NO



Outside California (800) 538-1535 (800) 538-1536 :

ATARI HomP C:omm1tPr-

Verify ROM Test is locked into CONTIN

UOUS MODE and is displaying each

ROM checksum and the word PASS

FAIL


400 VERIFY ROM

Press V and RETURN

PASS

NO

Press D and RETURN Press E and RETURN Press C and RETURN Press V and RETURN

'ool----1 \::....:

Did ROM D fail

NO

Did ROM E fail

NO

Did ROM F fail

NO

Did all ROMs fail

NO

Swap-out Z401 - Z403

Go to next page

5-29

i YES

Go to RAM Test, Page S-31

Replace A402 and retest



400 VERIFY ROM (cont)

PASS I YES Go to RAM Test, J j Page 5-31

NO

Is 02 clock present I YES at Pin 10 of Z403

NO

Trace 02 i (Refer CPU Board I

I on Page 5-10), I

and retest !

PASS I NO Call AT ARI Tech Line J

I Specialist YES Inside California

(800) 672-1466

Go to RAM Test,

1. Outside California

Page 5-31 ( 800) 538-1535 (800) 538-1536

Press SYSTEM RESET YES

The SALT II MENU is returned to the screen - it tells

you how much RAM is resident.

I Go to RAM START

ATARI Home Computer

400 RAM

START

Press Rand RETURN

Enter the amount of RAM to be tested

(Refer Page 3-lZ )

PASS I

NO

Did you select more RAM to test than is resident in

the console

pp NO

Press D and RETURN Press I;: and RETURN Press c and RETURN Press R and RETURN

RAM TEST MATRIX I is returned to the screen (See Figure s-2. and use the

LEGEND lrovided in Table 5- to decode

failure)

Repair components and retest

I Go to next page __ j

5-31

YES I Go to PORT Test,~ I Paae 5-33

400 RAM (cont)

PASS




AT ARI Home Cnmnuter

YES J Go to PORT Test, , I Page 5-33 i

5-32

400 PORT

C:START)

Press P and RETURN

Install Hand Controller Jack test

connector and Peripheral PORT test

connector

Press RETURN

PASS YES Burn-in Console for minimum of eight

NO hours

Res eat Test connectors and

retest

PASS YES

QQ NO

Use Table S-3 to dec ·,de error matrix, ,-,~place and repair

I defective components

and retest

i

I Go to next page


I

400 PORT (cont)

PASS

NO




YESj

I Burn-in Console for

minimum of eight hours

THlS PAGE INTENTIONALLY LEFT BLANK


PIN NUMBER

21 of J101

22 of J101

8 of Z302

9 of Z302

lO 0~ Z302

13 of Z302

37 of A303

6 of Z30l

34 of A302

35 of A302

29 of A30l

28 of A30l

Collector

Collector

7 of AlOl

25 of Al02

of Ql02

of Ql04

Table 5-l CLOCK CIRCUIT

BOARD

CPU

CPU

CPU

CPU

CPU

CPU

CPU

CPU

CPU

CPU

CPU

·CPU

800 Main Board

400 Main Board

400/800 Main Board

400/800 Main Board

* Use Scope Waveform Legend on next illustration of waveform.

AT ARI Home Comouter 5-36

FREQUENCY SCOPE CHART #*

1.789 1

1.789 2

1.789 2

1.789 l

1.789 2.

l. 789 3

1.140 4

1.789 3

1.789 3

3.579 5

3.579 5

3.579 6

3.579 6

3.579 6

1.789 l

1.789 l

page to see

I

Scope Waveform l IuS/DIV IV/DIV Scope Waveform 2 IuS/DIV IV/DIV

Scope Waveform 3 IUS/DIV IV/DIV Scope Waveform 4 IuS/DIV IV/DIV

Scope Waveform 5 IuS/DIV IV/DIV Scope Waveform 6 Ius/DIV IV/D!V

Scope Waveform Legend


Keyboard Connection

Chart

· Legend

PIN CONNECTOR NUMBERS NUMBERS

400IZ102 400IJ105 800IZ103 800IJ106

1. ESC

z. I 1

" 3. z 4. ; 5. 1 6, 7.

5·

7. 6 a. I

7

9, ~ 10.

( 9

11, ) 0

12. c~

13. INSERT >

14. DELETE BACKS

15.

16.

17.

18.

19,

zo.

Zl.

zz.

23.

24.

zs. 26,

27.

28.

I\ ..,. 1\ T"\ T l T _ -- -

BREAK 29·

CLR SET 30. TAB

Q 31.

w 32.

E 33.

R 34.

T 35.

y 36.

u 37.

I 38.

0 39,

p 40,

t - 41. -+ I 42, ,.

1 57. SPACE BAR

RETtJRN 43.

CRTL 44.

A 45.

s 46.

D 47,

F 48.

G 49.

H so.

J 51.

K SZ·

L 53,

I 54, I - ' ss. + .. 1\ 56.

* I

CAPS LOWR

SHIFT

z

X

c

v

B

N

M

[

• J . I

/I\ SHIFT

CONNECTOR NUMBERS

PIN NUMBERS

688~ 821 8 0100 o88o 00011 0000 0000 11000 0000 0000 RAM TEST

TESTINQ 40K

0004 0004

Defective RAM Boards Defective RAM Identifier

Defect Difference


Column

B,4 1st 8K Block ·

0

B,5; or 2nd 8K Block

B,4 and B,5 2

3

B,6; or 3rd 8K Block 4

B,4 and B,6 5

6

B,5 and B,6; 4th 8K Block 7

or

B,4, B,5 and

B,6


B,4 and B,7


Figure and Table 5~2

5-39

Description

Z512

Z511

Z510

Z509

Z508

Z507

Z506

Z505

ERROR COUNTER

TEST COUNTER

A

B

c D

E

F

G

R

7 6 s Table 5-3 Port Test Legend

4 3 2 :I 0 r.::-1 (:)(:)(:-'! uouu

SECTION 6

SYMPTOM CHECKLIST

The Symptom Checklist is designed to assist the experience technician arrive at a rapid diagnosis for problems. The checklist is not intended to replace the Diagnostic Flowchart as the primary troubleshooting guide, but rather, to supplement the flowchart.

Each symptom is accompanied by some possible causes and the best point to enter the Diagnostic Flowchart to locate the problem. ·

Symptom

Snowy Screen

Black/Gray Screen

Green/Yellow Screen

Solid Blue Screen

No Color or Bad Color Bars with SALT II

No Color Bars on TIA Test

ATARI Home Computer

Possible Cause

SW Box, AC Adaptor CH. Select SW, Modulator Adjustment, RF Cable Damage

Verify +5V, -5V & +12V Power Supplies, CR20 1-209, C201-205, C210, A201, A302, A303, A301, A103, Alll, Z103-Z105, Q103-4, X101

Z103-5, A03, Z303 & 4 all on ROM Board

Al01, Q107, Xl01

R309 Adjust, A301-2 on CPU Board; A111, Q107 on Mainboard, X1 01, Q103, Q104

Modulator Adjustment

A30 1 on CPU Board

6-1

Diagram Entry Point

AA 4-00, Page 5-3 800, Page 7-3

BB 4-00, Page 5-4 800, Page 7-4

cc 4-00, Page 5-6 800, Page 7-6

DD 4-00, Page 5-7 800, Page 7-7

EE 4-00, Page 5-9 800, Page 7-9

FF 4-00, Page 5-12 800, Page 7-12

GG 4-00, Page 5-12 800, Page 7-12

Symptom Possible Cause Diagram Entry Point

No Gray Bars A301, Alll, Ql07 HH R309 Adjustment 400, Page 5-14 X101, Ql03 & 4 800, Page 7-14 Modulator

Upside Down Alpha/ A302 on CPU Board, A30 1 II Numerics or Player Field Alll, Ql07 400, Page 5-1

800, Page 7-14

Modulator JJ 400, Page 5-21 800, Page 7-21

Some Keyboard Keys Fail Keyboard Failure KK 400, Page 5-22 800, Page 7-22

All Keyboard Keys Fail Al01, Z103 & 4 LL 400, Page 5-22 800, Page 7-22

Tones Missing During A101, Rl60, R161, Rl66, R170 MM Sound or Games Cl64, C179, Cl84, Q105 400, Page 5-24

L101, Ql06, Ll18, A203 800, Page 7-24

Console (Game) Switches A30 1 on CPU Board, R 119-122 NN Will Not Function C121-124 400, Page 5-28

800, Page 7-28

ROM Test Failed A401-403 on ROM Board 00 1403 400, Page 5-29

800, Page 7-29

RAM Test Failed See RAM test pp Matrix, Figure 5 400, Page 5-31 Table 5 800, Page 7-31

Hand Controllers See Port Test QQ Will Not Work Matrix, Table 5 400, Page 5-33

800, Page 7-33


SECTION 7

800 DIAGNOSTIC FLOWCHART

The Diagnostic Flowchart is intended to be easy to use and the primary aid when troubleshooting the AT ARI 800 Computer Console. Follow the prompts in the order presented. When a question is asked, follow the line from that box which best applies to the unit's situation. The flowchart leaves little to chance, it tells you when to perform a specific test and when to replace components.

Swap Out Procedure

At many places in the diagnostic flowchart, a box tells you to "swap-out" a chip or a number of chips in a particular order. The "swap-out" instruction means that you should replace the indicated components (one at a time) with a known good component of the same type. The 800 should then be tested with the new, known-good component in place to see whether the "swap-out" solved the problem being checked. If the swapout did not fix the problem, the known-good component should be removed, and the original component reinserted. In this way, you avoid needlessly replacing good components.

CAUTION:

Extreme care should be taken when handling the integrated circuit chips. They are all very sensitive to static electricity and can easily be erased by careless handling. Always keep the chips in their plastic carrier tubes or on conductive foam when not handling them. Make certain you are well grounded when handling the chips. Atari strongly recommends that you wear a conductive grounding band (which ties from your arm to ground) when handling the chips.

The chips are also susceptible to damage from stress when being removed from or inserted into the sockets. Always use a chip-puller when removing the chips. Do not pry the chip out with a screwdriver or any other tool.

Failure to follow the above guidlines results in unusally high chip failure rates and extra expense.


BOO POWER-UP

CATASTROPHIC F AlLURES AND BASIC OPERATIONS

Remove any Cartrid~e and Power-up Console

Is a clear MEMO PAD on the screen

NO.


YES Test special graphics mode of keyboard

using Figure 3-1 -

I Pass I YES! Go to POWER-UP,l I PART II, Pae:e 7-8

NO

Note failures; to be used later with

keyboard test

7-2

800 POWER-UP


SNOWY SCREEN

(START

Is the screen snowy e~l VE Check, adjust, or replace AC power adaptor, channel select switch and

TV switchbox

YES

Go to BLACK/GREY Is a clear MEMO PAD YES Go to POWER-UP,

SCREEN, Page, 7-4 on the screen PART II, Page 7-8

NO

Does Power Supply NO Check, repair, or Board, J201, Pin 17, replace the following:

have +5v CR206-CR209, replace 1N4001 type diodes

YES with 1N5391 (C017988)

Does voltage reg-ulator (A202) have

NO Is there a good +Sv ground connection at Check C208, C209,

Pin 1 of RF Module R203, and 5202 -replace if defective

YES

I Repair I - YES Is the RF Module I lis a clear MEMO PAD - mistuned or defective on the _screen

NO NO

I Is a clear MEMO PADI NO Go to Black/ Gray I I Return to START on the s_creen I Screen, Page 7-4 this page

YES

t Go to POWER-UP, t PART II, Page 7-8


y ES

I

800 POWER-UP

CAT AS TROPHIC F AlLURES AND BASIC OPERATIONS

e BLACK GREY SCREEN

I J, <he "~" black lt Check Power Supply or gray Board for:

NO BB Is there -Sv on J201 ~ Check, repair, or

Pin 1 replace the following:

Voltage Regulator

Go to GREEN I YELLOW YES CR204 and CR205 SCREEN, Page 7-6 Replace 1N4001 type

diodes with 1N5391 (C017988)

'Check C203 - C205, and C212

Is there +12v on NO Check, reo air, or J201, Pin 21 - replace the ·following:

Voltage Regulator

YES ( A201), CR204 and C203 - C205

Check the CPU Board for:

NOTE 1 - Clock Circuit (see NOTE 1)

See Table 7 -l, start Chip Reset Voltages: at the top of it and

trace back until clock Is there +Sv on NO I Repair I signal appears, A302, Pin 36 and

indicating which A303, Pin 40 component has failed.

YES

Replace CTIA/GTIA ( A301)

I Is a clear MEMO PAD\. YES Go to POWER-UP, on the screen I PA?.T II, Page 7-8 -

NO

Go to C, next page I .


80G PCWER-UP


BLACK/GREY SCREEN (cent)

Q On the Mother-

board

Swap-out Clock Circuit components, ZlOl - Zl04, and

OS Board ROM F by substitution

I Is a clear MEMO PAD YES Go to POWER-UP,

on the _screen PART II, Page 7-8

1 NO

Go to GREEN/YELLOW SCREEN, Page 7-6


800 POWER-UP

CATASTROPHIC F AlLURES AND BASIC OPERATION~

GREEN/YELLOW SCREEN

Is there a defective YES I Repair I RAM card in the

Unit (check lowest RAM slot first)

'6? v NO

Swap-out ROMs A401 - A403

on Personality Board

Is a clear MEMO PAD YES J Go to .!?OWER-UP, on the_ screen I PART II, Page 7-8

NO

Swap-out the following A303,

and Z303, and Z304

Is a clear MEMO PAr YES Go to POWER-UP, on the screen PART II, Page 7-8

NO

Go to SULID BLUE SCREEN, Page 7- 7

7 c.

I

CSTAR!)

Turn power OFF, Insert SALT II

Cartridge, and turn power ON

Does screen look like Figure 3;..2

See NOTE 2

NO

Is there NO color or are the colors off I

NO

Is the screen solid green, yellow, or

red

NO

Repeat ~OWER-UP,

800 POWER-UP, PART II

RAM:

TIA:

YES ROM:

YES J Go to COLOR ,I ERR: 1 BAR Test, Page 7-9

YES j Reseat SALT II :I 1 Cartridge and retest

NOTE 2

could be 8K, 24K, 32K, oe

16K, 40K

could be NTS C or PAL

could be -MATH:NTSA: MATH:NTSB:

NTSA NTSB

ALA ALB

MATH:PALA :P MATH:PALB:P

is displayed f or any nfy error bad ROM, ve ·

condition via VERIFY ROM, Page 7-

l Does screen look I like Figure 3-2 j

YES j Go to COLOR ,j l BAR Test, P~e7-9

NO

PART I, Pa~Z:e 7-2 J'


800 POWER-UP


SOLID BLUE SCREEN

C START:>

.T Are the words - YES Go to POWER-uP MEMO PAD on the PART II, Page 7-8

screen

(§- NO

I Swap-out the POKEY I (AlOl) chip

I Is the screen strictly! NO Black and White I

YES

Swap-out Al04 and XlOl on Motherbaord i

Call ATARI Tech Line! s a clear MEMO PADI NO _QJ) the screen J Specialist !

Inside California ~

YES (800) 672-1466

I Outside California Go to POWER-UP, \ (800) 538-1535

i PART II, Page 7-8 (800) 835-1536


COLOR BARS

CSTAR}:>

I Does MENU appear I NO . r Repeat POWER UP,! (Refer Figure 3-3) 1 I Page 7-2

® YES

I Press C and I RETURN

I Does screen look l YES j Go tn TIA ?age 7-BI like Fi~~:ure 3-4 1

NO

I Can you adjust R309 I NO Go to COLOR BAR to the proper color r TROUBLESHOOTING,

Page 7-10

YES

I Adjust R309 I

I Does screen 1 ookl YES I Go to TIA Pae:e 7-13 I like Figure 3-4 I '··

NO

Go to COLOR BAR TROUBLESHOOTING.

Page 7-10


800 COLOR BAR

TROUBLESHOOTING

NO

Go to next page

ATARI Home Computer


YES Trace color circuitry

7-10

on CPU Board. Make certain to check

color delay circuit and R309

Go to TIA, Pa!ie 7-13

-iiiiil, liiiii··

~::::::1

I: ;;;;;I

;;;'.-- . '

II

800 COLOR BAR


Verify that each of the following levels and/or signal wave forms exist before proceeding to the next step. Use SALT II, COLOR BARS, locked into the continuous mode.

Is there 3. 58MHz NO I Swap-out XlOl, 01021 oscillation at Rl06 I and Ql03

on Motherboard , Refer Figure

YES

Is there input NO I Trace circuit back to I signal to base of I previous step QlOS, Pin 2 Refer

Figure

!II = YES

;;;;;;;;;~ . ' Is there output NO I Trace circuit back to I

signal from emitter I previous step of QlOS Refer

Figure

;;;;;!'

YES

Is there signal at NO !Trace circuit back I JllS, Pin 20 Refer Figure

YES

Go to next page


ATARI Home Computer

cont'

Is there signal NO Trace circuit back to at both ends of L202 ~---1 previous step

Refer Figure ·

YES


Figure

+5 on Modulator, Pin 5

YES


NO

Call AT ARI Tech Specialist



7-12


Verify Power Supply voltage at Pin 19

of


TIA TEST

NO

Is there a color rainbow on the

screen

NO

YES Go to GRAY BAR 1------1 Test, Page7-14

Replace GTIA ( A301) on CPU Board


800 GREY BAR

YES I Does screen looK l like Figure 3-6 ,r----------1

HH\---1. NO

I R~place CTIA/GTIA I (A301)

I Does screen look ! YES like Fi ure 3-6 ~~~;__-----+

NO

r Replace Al03 I

!Does screen lookl

like Figure 3-6 J

NO

Go to 800 GREY BAF. TROUBLESHOOTING,

Page 7-15

AT ARI HnmP C"nmnlli"Pr"

YES I Go to ANY VIDEO., 1 Page 7_-18

800 GREY BAR

TROUBLESHOOTING

CsTART

I Swap-out A301 and A302 on CPU Board

I Does screen look like Fi;:ure · 3-6

NO

I Swap CPU Board

I Does screen look like Fhzure 3- 6

NO

-I

I I

l

I

I Swap-out A103, and Al04

Q1osl

I Does screen look I like Fi;:ure 3-6 I

NO

I Go to next page l

YES

YES

YES


I Go to ANY VIDEO,.

L Page 7-18

Trace color circuitry on CPU Board.

Make certain to check color delay circuit

and R309

Go to ANY VIDEO,.

1 Page 7-18

800 GREY BAR


Verify that each of the following levels and/or signal wave forms exist before proceeding to the next step. Use SALT II, COLOR BARS,

=========~lo:=cked into the cont~nuous mode.

ATARI Home Comnuter

Is there 3. 58MHz oscillation at Rl06

on Motherboard Ref"r Figure

YES

Is there input signal to base of

QlOS, Pin 2 Refer Figure

YES

Is there output signal from emitter

of QlOS Refer Figure

YES

Is there signal at JUS, Pin 20

Refer Figure

YES

1--N_0.;.....-1 Swap-out XlOl, Ql02 and Ql03

NO Trace circuit back to i-----1 previous step

NO' Trace circuit back to previous step

NO Trace circuit back

7-16

800 GREY BAR


Is there signal NO Trace circuit ba.ck to at both ends of 1202 1----i previous step

Refer Figure

YES


Figure


Signal on Modulator,

YES

Does screen like Figure

NO


Inside California . (800) 672-1466

Outside California· (800) 538-1535 (800) 538-1536 .·

. NO


Trace circuit back to previous step


of Jll5

800 ANY VIDEO

Replace ANTIC ( A302) on CPU

NO

Go ~:: 800 ANY VIDEO TROUBLESHOOTING, · ~age 7-19

ATARI HnmP C:nmn11tP.r

YES

800 ANY VIDEO

TROUBLESHOOTING

C START::>

I Swap-out A30l and A302 on CPU Board

I Does screen look like liiczure 3-5

NO

I Swap CPU Board

I Does screen look like Fiaure 3-5

NO

l l 1

l

l

I S~ap-out Al03, and A104

o1osl

I Does screen look I like Fi~;ture 3- 5 I

NO

I Go to next page l

YES

YES

YES


., Go to KEYBOARD, . I Page 7-22

Trace color circuitry on CPU Board.

Make certain to check color delay circuit

and R309

Go to KEYBOARD, Page 7-22

800 ANY VIDEO

TROUBLESHOOTING (cent)

Verify that each of the following levels and/ or signal wave forms exist before proceeding to the next step. Use SALT II, COLOR BARS, locked into the continuous mode.

,. --F·I 1: - '

!~~·- .

Is there 3. 58MHz oscillation at Rl06

on Motherboard Refer Figure

YES

1--N_O_-l Swap-out XlOl, QlOZ and Ql03

~

II --'---'

J:l• ..... -r;;;;; .. I

:::::::l lk ::::::11 :::::1

li II iii' -·- - . • II -

ATARI Home Comnuter

Is there input NO Trace circuit back to signal to base of t----l previous step

Ql05, Pin Z Refer Figure

YES

Is there output signal from emitter

of QlOS Refer Figure

YES

Is there signal at JllS, Pin ZO

Refer Figure

YES

7-20

NO

NO

circuit back to vious step

Trace circuit back

800 ANY VIDEO

T:!:tOUBLESHOOTING (cont)

YES


Figure


YES


NO

Call ATARI Tech Specialist


Inside California '(800) 672-1466

Outside California (800) 538-1535 (800 538-1536

7-21

NO Trace circuit ba.ck to

NO

previous step

Trace circuit back to previous step


of Jl15

KEYBOARD

I START I

I Press K and I RETURN

1 Do keyboard test 1

YES I PASS I @) NO

if I Did same keys fail as I NO in POWER-UP, PART I f

-

YES

I Was it all or just some I ALL of the keys I

SOME

I Replace keyboard I

. Y~!'; I PASS I ' @ NO

l Swap-out AlOl, Zl03, I and Zl04

I Go to TONE TEST, l YES I PASS I Page 7-24 I

NO

I Go to next page I

"'7 ..,..,

TYPICAL KEYBOARD

OUTPUT

Sample made from Zl04, Pin 14 with W key depressed.

SCOPE: --:TV'!DIV, .5mS/DIV SYNC: -cHI, + Trigger

ATARI Home Computer

KEYBOARD (cont)

Troubleshoot, using following information

and Keyboard . schematic, Page 7-3 8

TYPICAL DECODER

OUTPUT

Sample made from Zl04, Pin 3 with

W key depressed

SCOPE: --:TV'!DIV, .2mS/DIV SYNC: -cHI, + Trigger

lJlJ1~

lt...::P_:;as~s~_ ...... __ v.u;..;:o",.__:;-tl Go to TONE TEST I Page 7-24

NO

Call ATARI Tech Line I Specialist I

Inside California (800) 672..:.1466


7-23

800 TONE TEST

I STARTJ

l Press T andj RETURN

Enter voice number to be tested ( 1-4)

and Press RETURN

rMM\J----1 "V __ __._ __ __,

I Test remaining I YES Did you hear all three voices 11----= ..... H eight tones or

speaker clicks*

*The first two tones are very ~ ~ - - high in frequency;- thus,

I PASS I

YES

Go to CONSOLE . SWITCH TEST,

Page 7-28

NO

AT ART HnmP rnmn11i""""

NO

I Replace POKEY (AlOl) and retest

I PASS l

NO

Lock SALT II into CONTINUOUS MODE,

restart test on VOICE 1, and scope Pin 37 (AUD) of AlOl

I Go to next page

YES

they may be inaudible to some ears. The TV speaker clicks from the DC level shifts can be heard for each tone.

Go to START, this page

___ _,

This re-runs the first two steps of this

test

ATARI Home Computer


Is there a frequency NO shift as the frequency

of the tone lowers and amplitude decays

to Ov

SCOPE: --:-IV I Div, .5mS/Div

SYNC: --+ CHl

YES

Press J and RETURN

Is the screen black NO with no sound

YES

Press SPACE BAR

Did you hear a N(')

single test tone

YES

Press SYSTEM RESET, T, RETURN,

1, and RETURN

PASS NO

YES

Go to CONSOLE SWITCH TEST, ' Page 7- 28

7-25

Go to 0, next page l




( D :)

Is R157 (lK) shorted

NO

Are C18l(l.uf), Rl67(18K), or

R195( 4. 7K) epen

NO

Are Cl78( .OOluf), Cl80 ( . 22uf) , or

Rl66(1K) shorted or o en

NO

Can you verify the following:

1) 4. 5 MHz oscillation by connecting a scope to the emitter of 0106

2) A sine wave ~ 2.3 centimeters @ .luSIDiv and 20mVIDiv which equals 'i'$ 4.5MHz

3) Can you adjust LlOl to equal 4.5MHz

NO

Repair and retest

AT ARI Home Comouter


YES_ Repair and retest

VE~ Repair and retest I

Repair and retest

1--..-...;YE...._s_~ Verify input to Audio Mixer by connecting

scope ( .5mSIDiv, 5mV I Div) to collector

A104, Pin 2

Are waveforms same as AlOl, Pin 37 (except wave

form is rounded, not square)

YES

Is there output on Al04, Pin 5 (scope . 5mSIDiv, SOmV I Div)

YES

Go to next page

7-26

t--_.N...,._o __ _,IReturn to START .I I Page 7-24 I

t---"N""0'-----;1 Replace Al04 and I l retest

800 TONE TEST (cont}

Adjust A203 to Ch3, verify TV is tuned

to Ch3 and fine tuning is adjusted to

a clear- picture and turn the volume up

!Retest I

!PAss I Nn Call AT ARI Tech Line! Specialist I



Re-run remainder of (800) 538-1536 tone test for other

three voices

I PASS I NO

YES

Go to CONSOLE SWITCH TEST,

Page 7-28


800 CONSOLE SWITCH TEST

START:::>

Press S and RETURN

Press each ( 4) Console Switch

PASS YES Go to VERIFY ROM, I Page 7-29

e NO I -

_j Replace and retest I Does console speaker NO Are Rl84 - Rl87 or YES "BEEP" when any Cl65 shorted or Console Switch is open

pressed

YES

Replace CTIA/GTIA ( A301) on CPU

Board and retest

PASS YES Go to VERIFY ROM, Page 7- 29

NO

Did a single YES switch fail

NO


Inside California (800} 672-1466

Outside California (800} 538-1535 (800) 538-1536


Verify ROM Test is locked into CONTIN

UOUS MODE and is displaying each

ROM checksum and the word PASS or

FAIL


800 VERIFY ROM

NO

RETURN RETURN RETURN RETURN

NO

fail

NO

ROM F fail

NO

Did all ROMs fail

NO

7-29



Replace A401 - A403 and retest

800 VERIFY ROM ( cont)

PASS YES J Go to RAM Test, J I Page 7- 31

NO

Is 02 clock present YES at Pin 10 of Z403 J

NO

Trace 02 (Refer CPU Board

on Page 5-10), and retest

-

PASS NO Call ATARI Tech Linei Specialist


I Go to RAM Test, Outside California

Page 7-31 (800) 538-1535 (800) 835-1536


Press SYSTEM RESET YES

The SALT II MENU is returned to the screen - it tells

you how much RAM is resident.

I Go to RAM START I

ATARI Home Computer

800 RAM

QTART:::>

Press Rand RETURN

Enter the amount of RAM to be tested

(Refer Page 3-121

L __ _:P:_:A~S~s:_ __ _J--=-Y..:E=S-ll Go to PORT T€-st. I I Page 7- 33 NO

Did you select more RAM tci test than is resident in

the console

PPJ----+ NO

Press D and RETURN Press E and RETURN Press C and RETURN Press R and RETURN

RAM TEST MATRIX is returned to the screen (See Figure 7-2 and use the

LEGEND provided in Table 7-2. to decode

failure)

Repair components and retest

Go to next page

7-31

800 RAM (cont)

PASS I I YES Go to PORT Te.;t

1 ~---11 Page 7-33 ~-----~-----~

NO




, 800 PORT TEST

Install Hand Controller Jack test

connector and Peripheral PORT test

connector

QQ

Reseat Test connectors and

retest

NO

Use Table 7-3 to decode error matrix, I replace and repair j

defective components and retest


YES

800 PORT TEST (cont)

I PASS YES Burn-in Console for minimum of eight

I NO hours



Outside California I

(800) 538-1535 I (800) 538-1536

THIS PAGE INTENTIONALLY LEFT BLANK


Table 7-1

CLOCK CIRCUIT

PIN NUMBER BOARD FREQUENCY SCOPE CHART '#:*

21 of JlOl CPU 1.789 1

22 of J101 CPU 1. 789 2

8 of Z302 CPU 1. 789 2

9 of Z302 CPU 1.789 1

10 o'! Z302 CPU 1. 789 2"

13 of Z302 CPU 1. 789 3

37 of A303 CPU 1.140 4

6 of Z301 CPU 1. 789 3

34 of A302 CPU 1.789 3

35 of A302 CPU 3.5 79 5

29 of A30l CPU 3. 5 79 5

28 of A301 CPU 3.579 6

Collector of Ql02 800 Main Board 3.579 6

Collector of Ql04 400 Main Board 3.5 79 6

7 of AlOl 400/800 Main Board 1. 789 1

25 of Al02 400/800 Main Board 1.789 1

* Use Scope Waveform Legend on next page to see illustration of waveform.

1 I

T

Scope Waveform 1 IuS/DIV IV/DIV



T T T 1 I

I . Scope Waveform 2 IuS/DIV IV/DIV

1 I·

·scope Waveform 4 IuS /DIV IV /DIV

Scope Waveform 6 Ius/DIV IV/DIV

Scope Waveform Legend


Keyboard Connection

Chart

Legend

PIN CONNECTOR NUMBERS NUMBERS

400/2102 400/J105 800/2103 800/J106

- - -? 14 1

- -1 2

- !---2 3

:-- 1--15 4

1--- - -310 4 5 ~ -

13 6

- -12 7

- .. :-- -lf 5

~L ---- 36

~~ r-;

~2?

r-y

r-5p

L9 j ~lF ~1,1 ~? '-113 ~\4

~~ ~~ r:-t 1-T ~"-r r-1 I

r-214 r-215 '-l6 f-2? i-218 ~-v

r-2l '-2f -119 1-\8 r-? r-16 I

:-y r-3,8 r-319 1-410 ~11 .~412

r-36 i-315 r-3t ~--~3 r-3,2 rr1 ~43 I I

-y r-511 --512 i-53 ~5t ~515 I

f-419 -4~ '-47 ,....46 1-415 I I

I 9 J 10 1 11 1 lZ 1 13 1 14 1 1s 1 16 I 11l~gg ~I 1 I , I " I • I , I 14 I " I "1~22

AlOl

1. ESC 15. BREAK 29· RETURN 43. CAPS LOWR

z. I 16. CLR SET 30. CRTL 44. SHIFT 1 TAB . 3. z 17. Q 31. A 45. z

4. ; 18. w 32. s 46. X

5. I 19. E 33. D 47. c

6. 7. 20. R 34. F 48. v 5

7. ~ 21. T 35. G 49. B . a. I zz. y 36. H so. N 7

9. ~ 23. u 37. J 51. M

10. (

24. I 38. K 52· [

9 '

11. ) zs. 0 39. L 53. ]

0 . 12. c~ 26. p 40. I 54.

I I

13. INSERT 27. t - 41, - ' 55. /I\ > - +

14. DELETE 28. + I 42. .. !1. 56. SHIFT BACK S . *

157. SPACE BAR I

CONNECTOR NUMBERS

IJ105 IJ106

/2101 IZ104

PIN NUMBERS

688~ ~82818 0100 0 0

c 00011 0000 D 0000 11000 E 0000 0000

RAM TEST

TESTINQ 40K

Defective RAM Boards

Defect


B,4 1st 8K Block

B,.5; or 2nd 8K Block

B,4 and B,.5

B,6; or 3rd 8K Block

B,4 and B,6

B,.5 and B,6; 4th 8K Block

or

B,4, B,5 and

B,6


B,4 and B,7

0004 0004

Defective RAM Identifier

Difference

Column Description

0 Z512

Z5ll

2 Z5IO

3 Z.509

4 Z.508

5 Z.507

6 Z.506

7 Z.50.5

Figure and Table 7-2


ERROR COUNTER

TEST COUNTER

7 6 A

B

c D

E

F

G

B

A.T/\DT U--- ,..... _____ .._ __

5

Table 7-3

Port Test Legend

4

""7 '· n.

3 2 1 0 GQQ(~-, uuuu

SECTION 8

GAME CONTROLLERS

The following pages contain descriptions, schematics, and test procedures for the four game controllers used with the Atari 400/800 Computer Consoles.

·AT ARI Home Computer 8-1 PAL/UK

JOYSTICK (X-Y CONTROLLER)

Inside each joystick is a small PC board that has 5 calculator-type keypads mounted on it. Four of these are positioned beneath the stick in square shaped pattern, and the fifth is located beneath the pushbutton (See Figure 8-1). When the stick is pushed forward, the bottom surface of the stick presses against the forward keypad, causing it to "make", thus completing the circuit connected to it. In the same way, pushing the stick back, left and right causes the respective keypad underneath that position to close and complete the circuit.

Figure 8-1. Joystick (X-Y Controller)

If the stick is pushed forward and to the right at the same time (that is, in a northeast direction), both the forward and right keypad close simultaneously, which causes the POKEY to see two switch closures happening at once (See Figure 8-2). The result is that the object being controlled on the screen moves diagonally. With the four keypads, 8 different directions can be attained. The pushbutton determines whether the keypad beneath it is either open or closed. (Earlier models were spring loaded.)

ATARI Home Computer

MISSILE I Sl

~I

PCI auTUN! VIEWED FROM CCMPONETSIDIE

Figure 8-2 •.. Joystick PCB

8-3 PAL/UK

JOYSTICK (X-Y CONTROLLER) CHECK'

Equipment Needed

l) T.V. Set

2) Known good console

3) S "d TM "d tarra1 er cartr 1 ge

Procedure

l) Check for cosmetic damage.

2) Plug in cartridge and plug controller to be tested in the left player port.

3) Press game reset.

4) Move the joystick in the eight possible directions and see that the cursor leaves a trail.

5) Test is now completed.

ATART HnmP !'nmntiTPr" PAT /1 TK

GAME PADDLE

Each game paddle consists of 1 Megaohm potentiometer that, when varied, causes different values to be seen and acted upon by the POKEY IC. Also contained in the paddle is a simple spring loaded push-to-make pushbutton switch (See Figure 8-3). There are two game paddles connected to each I/O plug.

Figure 8-3. Game Paddle


I

I I

' PAL/UK

_o_ BUTTON CONTROL I (' 0 POT I

~ Vee 5 VOLTS

GND

...0.... BUTTON CONTROL 2 (' 0

POT2

~ 'kc 5 VOLTS

GND ,, '

l

..,..

,l

y

"y" CABLE DUAL 4 CONDUCTOR

GREEN

VIOLET

YELLOW

BLACK

BROWN

RED

COlOSI 1'7'

' /

' '

' , '

0

PIN 3

PIN9

PIN7

PINS

PIN4

PIN 5

· Figure 8-4. Game Paddle Schema tic

GAME PADDLE CONTROLLER CHECK

Equipment Needed

1) T.V. set

2) Known good console

3) Superbreakout ™ cartridge

Procedure

1) Check for cosmetic damage.

2) Plug in cartridge and plug controllers to be tested into the left player port.

3) Press game reset.

4) Press the button on one of the controllers. A ball should be served.

5) By turning the knob the paddle can be placed beneath the ball.

6) Repeat steps 3, 4, & 5 for the other controller.

SECTION 9

This section is divided into two parts. The first part contains a complete listing of all AT ARI l.j.00 Computer parts; and, the second part contains a complete listing of all AT ARI 800 Computer parts.

ATARI Home Computer 9-1 UK

ATARI 400 COMPUTER CONSOLE PARTS LIST

PARTS LIST

Assy Part No. Description Location

CPU 14-5102 RESISTOR l/4W lK R302-306,313 CPU 14-5103 RESISTOR l/4W !OK R314 CPU 14-51RO RESISTOR l/4W 1 OHM R317 CPU 14-5334 RESISTOR 1/4W 330K R308 CPU 14-5471 RESISTOR l/4W 470 OHM R316 CPU 14-5472 RESISTOR l/4W 4.7K R301,307,310,

311,312 CPU 14-5682 RESISTOR l/4W 6.8K R315 CPU 19-411504 RESISTOR VARIABLE 500K R309 CPU 34-2N3904 TRANSISTOR 2N3904 Q301 CPU C010821 CAP. POLY 820pF (50V) C308 CPU C014179-0l CAP. CERAMIC AXIAL 22pF (50V) C309 CPU C014179-14 CAP. CERAMIC AXIAL 56pF (50V) C310 CPU C014181-0l CAP. CERAMIC AXIAL C307

.001 UF (25V) CPU C014181-02 CAP. CERAMIC AXIAL C303,306

.OlUF (25V) CPU C014181-03 CAP. CERAMIC AXIAL C301 ,302,304,305

.1 UF (25V) CPU C014313 IC 74LS244 Z302 CPU C014386-02 SOCKET IC (14 Pin) Z30l,302 CPU C014386-05 SOCKET IC (20 Pin) Z303,304 CPU C014386-09 SOCKET IC (40 Pin) A301-303 CPU C014806 IC 6502 (Modified) A303 CPU C014887 IC ANTIC (PAL) A302 CPU C014889 IC GTIA (PAL) A301 CPU C016045 IC 74LS74 Z301 CPU C017222 INDUCTOR 1.5uH L303 CPU C017536 CRYSTAL 4.433618 MhZ Y301 CPU CA015967 PC BOARD (CPU) CABLE 78-24001 CABLE TIE CABLE C010389 TORROID CORE CABLE CA016234 COAXIAL CABLE ASSY CABLE CA016294 CABLE ASSY CONSOLE 88-1006 RUBBER FEET CONSOLE C014013 CONSOLE BASE CONSOLE C014014 CONSOLE TOP CONSOLE CA014782 TOP COVER ASSY CONSOLE CA016108-0l CONSOLE ASSY (16K) CONSOLE CA016108-02 CONSOLE ASSY (8K) CONSOLE CA016147-0l CONSOLE BASE ASSY (16K) CONSOLE CA017504 CONSOLE BASE ASSY (8K) DOOR C014016 CARTRIDGE DOOR


PARTS LIST (con t)


DOOR C014018 DOOR LATCH DOOR C014019 HINGE BRACKET DOOR C014020 DOOR SHIELD DOOR C014103 FOAM PAD DOOR C014104 CARTRIDGE DOOR SPRING DOOR CA014153 DOOR ASSY KEYBOARD CA014031 KEYBOARD ASSY REPLACEMENT LISTED KEYBOARD CA017999 KEYBOARD ASSY (REPLACEMENT FOR

P/N CA014031) MAIN 14-5101 RESISTOR 1/4W 100 OHM R101-118,155,157 MAIN 14-5102 RESISTOR 1/4W 1K R160,162,169,172 MAIN 14-5103 RESISTOR 1/4W 10K R165 MAIN 14-5104 RESISTOR 1/4W lOOK R182 MAIN 14-5105 RESISTOR 1/4W 1 MEG R181 MAIN 14-5123 RESISTOR 1/4W 12K R168,173,176 MAIN 14-5124 RESISTOR 1/4W 120K R179 MAIN 14-5151 RESISTOR 1/4W 150 OHM Rl19-123,134-149

151-154 MAIN 14-5153 RESISTOR 1/4W 15K R167,176 MAIN 14-5182 RESISTOR 1/4W 1.8K R126-133,164 MAIN 14-5183 RESISTOR 1/4W 18K R161,171 MAIN 14-5271 RESISTOR 1/4W 270 OHM R158 MAIN 14-5272 RESISTOR 1/4W 2.7K R185 MAIN 14-5303 RESISTOR 1/4W 30K R178 MAIN 14-5332 RESISTOR 1/4W 3.3K R175 MAIN 14-5471 RESISTOR 1/4W 470 OHM R156,184 MAIN 14-5472 RESISTOR 1/4W 4.7K R170,174 MAIN 14-5473 RESISTOR 1/4W 47K R124,125 MAIN 14-5474 RESISTOR 1/4W 470K R183 MAIN 14-5623 RESISTOR 1/4W 62K R180 MAIN 14-5682 RESISTOR 1/4W 6.8K R166 MAIN 14-5912 RESISTOR 1/4W 9.1K R163 MAIN 21-101473 CAP. POLY .047uF (100V) C135-142,181 MAIN 31-1N914 DIODE 1N914 CR101,103 MAIN 33-2N3906 TRANSISTOR 2N3906 Q103,104,106 MAIN 34-2N3563 TRANSISTOR 2N3563 Q105 MAIN 34-2N3904 TRANSISTOR 2N3904 Q107 MAIN C010727 CONNECTOR (9 PIN) J101-104 (ALTERNATE

FOR P /N CO 1 0448) MAIN C010816 HEX CMOS BUFFER (CD4050B) Alll MAIN C010821 CAP. POLY 820uF (50V) C177 ,178

AT ARI Home Computer 9-3 UK


PARTS LIST (cant)


MAIN C010823 INDUCTOR VARIABLE 0.6-1.2uH L101 MAIN C012285 CRYSTAL 3.546894 MHz Y101 MAIN C012294 IC POKEY A101 MAIN C012399 IC ROM A105 MAIN C014179-03 CAP. CERAMIC AXIAL 10pF (50V) C187 MAIN C014179-05 CAP. CERAMIC AXIAL 47pF (50V) C183,194,196 MAIN C014179-12 CAP. CERAMIC AXIAL 68pF (50V) C193,195 MAIN C014180-03 CAP. CERAMIC AXIAL 1 OOpF (50V) C185 MAIN C014181-01 CAP. CERAMIC AXIAL C1 01-125,127-134,

.001 uF (25V) 143-162,165-171' 184,201

MAIN C014181-02 CAP. CERAMIC AXIAL 173-176,180, .o1uF (25V) 197-199

MAIN C014181-03 CAP. CERAMIC AXIAL C126,163,164,172, .1 uF (25V) 179,182,186,188-191'

202 MAIN C014322 CONNECTOR EDGE (22/44) J109 MAIN C014323 CONNECTOR EDGE (28/56) JllO MAIN C014336 IC 4051 2101,102 MAIN C014339 IC 74LS10 2104 MAIN C014344 IC 74LS138 2105 MAIN C014361 IC 74LS42 2103 MAIN C014371 CAP. ELEC AXIAL 10uF (16V) C192 MAIN C014379 RESISTOR NETWORK (9 X 4.7K) R150,159 MAIN C014380 INDUCTOR 22uH L115-117 MAIN C014384 INDUCTOR FERRITT BEAD L1 03-114,118 MAIN C014386-02 SOCKET IC (14 PIN) 2104 MAIN C014386-03 SOCKET IC (16 PIN) A111 ,2101-103,105 MAIN C014386-07 SOCKET IC (24 PIN) A103-105 MAIN C014386-09 SOCKET IC (40 PIN) A101,102 MAIN C014389 Edge Connector (15/30) J108 MAIN C014394 TRANSISTOR MPS06 Q101 MAIN C014718-0l CONNECTOR HEADER (20 Pin) Jl07 MAIN C014720-01 HEADER RT ANGLE Jl06 MAIN C014778-02 CONNECTOR (22 PIN) J105 MAIN C014785 CONNECTOR SUPPORT BRACKET MAIN C014795 IC PIA (6520) A102 (ALTERNATE

LISTED) MAIN C014796 FASTENER LATCHING MAIN C014809 TRANSISTOR (MPSA55) Ql02 MAIN C014812 IC PIA A1 02 (ALTERNATE

FOR P/N C014795)


PARTS LIST (cont)


MAIN C015199 IC ROM- OS A104 MAIN C015299 IC ROM- OS A103 MAIN C015367 FISHPAPERINSULATOR MAIN C015925 INDUCTOR AXIAL .83uH L102 MAIN C016326 PC BOARD STABILIZER MAIN C060163-02 CAP. CERAMIC AXIAL .01 uF C203 (EPOXY

INSULA TED TYPE ONLY))

MAIN CA011840 SPEAKER ASSY 63 OHM MAIN CA015960 PC BOARD ASSY (400 MAIN Assy) MODULE C014015 CASTING MODULE C014017 BOTTOM COVER MODULE CA014714 CASTING ASSY MODULE CA016107-01 MODULE ASSY (16K) MODULE CA017505-02 MODULE Assy (8K) PWR SUPP 14-5331 RESISTOR 1/4W 330 OHM R201 PWR SUPP 14-5682 RESISTOR 1/4W 6.8K R203 PWR SUPP C010173 SWITCH CHANNEL SELECT S20 1 (Replacement

for P/N C012242) PWR SUPP C010394 CAP. POLY FILM .22uF C203,208,211 PWR SUPP C012242 SWITCH CHANNEL SELECT S201 (ALTERNATE

LISTED) PWR SUPP C012995 CONNECTOR R T ANGLE (13 PIN) J202 PWR SUPP C014059 PC BOARD PWR SUPP C014069 LED STANDOFF PWR SUPP C014075 PLUNGER INTERLOCK SWITCH PWR SUPP C014092 HEATSINK PWR SUPP C014181-01 CAP. CERAMIC AXIAL 213

.001 uF (25V) PWR SUPP C014181-03 CAP. CERAMIC AXIAL .1uF (25V) C206 PWR SUPP C014348 VOLT AGE REGULA TOR (5V) (7805) A202 PWR SUPP C014349 VOLTAGE REGULATOR (12V) A201

(78M12) PWR SUPP C014370 CAP. ELEC AXIAL 470uF (16V) C201,202 PWR SUPP C014371 CAP. ELEC AXIAL 10uF (16V) C207 PWR SUPP C014373 CAP. ELEC AXIAL 2200uF (16 V) C204,205 PWR SUPP C014374-01 CAP. ELEC RADIAL 4700uF (16V) C209 (ALTERNATE

FOR P/N C014374-02) PWR SUPP C014374-02 CAP. ELEC RADIAL 4700uF (16V) C209 (ALTERNATE

LISTED) PWR SUPP C014383 INDUCTOR AXIAL luH L201 PWR SUPP C014384 INDUCTOR FERRITT BEAD L202-205 PWR SUPP C014387 INTERLOCK SWITCH S202 PWR SUPP C014393 CAP. ELEC AXIAL 22uF (16V) C210



PARTS LIST (cont)


PWR SUPP C014397 SWITCH POWER S203 PWR SUPP C014715 POWER JACK J204 PWR SUPP C014716-02 CONNECTOR SOCKET J201 PWR SUPP C014718-03 CONNECTOR Header (5 Pin) J203 PWR SUPP C014771 RESISTOR 2W 33 OHM R202 PWR SUPP C014777 LED DIODE CR210 PWR SUPP C014796 FASTENER LATCHING PWR SUPP C014808-01 DIODE ZENER 1N5231 B (5.1V) CR201 PWR SUPP C015344 RIVET NYLON PWR SUPP C01l988 DIODE (1 N5391) CR206-209 PWR SUPP CA014708 HEATSINK ASSY PWR SUPP CA016040 PC BOARD (POWER SUPPLY) RAM 14-5221 RESISTOR 14W 220 OHM R501 RAM C014179-05 CAP. CERAMIC AXIAL 47pF (50V) C518 RAM C014181-0l CAP. CERAMIC AXIAL C521-523

.OOluF (25V) RAM C014181-02 CAP. CERAMIC AXIAL .01 uF (25V) C503,507 ,511,515 RAM C014181-03 CAP. CERAMIC AXIAL .1 uF (25V) C50 1 ,502,504-506

508-510,512-519 RAM C014313 IC 74LS244 Z502 RAM C014331 IC RAM Z505-512 RAM C014339 IC 74LS10 Z501 RAM C014345 IC 74LS158 Z503,504 RAM C014386-02 SOCKETIC (14 PIN) A501 RAM C014386-03 SOCKET IC (16 PIN) A503-512 RAM C014386-05 SOCKET IC (20 PIN) A502 RAM C014804 INDUCTOR AXIAL LEAD 4.7uH L501 RAM CAO 14801-02 PC BOARD ASSY (8K) RAM CA014802-01 PC BOARD ASSY (16K) RF MOD C014716-04 CONNECTOR SOCKET (5 PIN) RF MOD C016011 UHF MODULATOR RF MOD C016042 PC BOARD RF MOD CA015952-01 RF ADAPTOR PC BOARD ASSY (REV 2)TOP


PARTS LIST


CPU 14-5102 RESISTOR 1/4W 1K R302-306,313 CPU 14-5103 RESISTOR 1/4W 10K R314 CPU 14-51RO RESISTOR l/4W 1 OHM R317 CPU 14-5334 RESISTOR 1/4W 330K R308 CPU 14-5471 RESISTOR 1/4W 470 OHM R316 CPU 14-5472 RESISTOR 1/4W 4.7K R301,307 ,310,

311,312 CPU 14-5682 RESISTOR 1/4W 6.8K R315 CPU 19-411504 RESISTOR VARIABLE 50 0K R309 CPU 34-2N3904 TRANSISTOR 2N3904 Q301 CPU C010821 CAP. POLY 820pF (50V) C308 CPU C014179-01 CAP. CERAMIC AXIAL 22pF (50V) C309 CPU C014179-14 CAP. CERAMIC AXIAL 56pF (50V) C310 CPU C014181-01 CAP. CERAMIC AXIAL C307

.001 UF (25V) CPU C014181-02 CAP. CERAMIC AXIAL C303,306

.01 UF (25V) CPU C014181-03 CAP. CERAMIC AXIAL C30 1,302,304,305

.1 UF (25V) CPU C014313 IC 74LS244 2302 CPU C014386-02 SOCKET IC (14 Pin) 2301,302 CPU C014386-05 SOCKET IC (20 Pin) 2303,304 CPU C014386-09 SOCKET IC (40 Pin) A301-303 CPU C014806 IC 6502 (Modified) A303 CPU C014887 IC ANTIC (PAL) A302 CPU C014889 IC GTIA (PAL) A301 CPU C016045 IC 74LS74 2301 CPU C017222 INDUCTOR 1.5uH L303 CPU C017536 CRYSTAL 4.433618 Mh2 Y301 CPU CA015967 PC BOARD (CPU) CABLE 78-24001 CABLE TIE CABLE C010389 TORROID CORE CABLE CA016234 COAXIAL CABLE ASSY CABLE CA016294 CABLE ASSY CONSOLE 88-1006 RUBBER FEET CONSOLE C014013 CONSOLE BASE CONSOLE C014014 CONSOLE TOP CONSOLE CA014782 TOP COVER ASSY CONSOLE CA016100-01 CONSOLE ASSY (16K) CONSOLE CA016100-02 CONSOLE ASSY (8K) CONSOLE CA016101-0l CONSOLE BASE ASSY (16K) CONSOLE CA016101-02 CONSOLE BASE ASSY (&K) DOOR C014016 CARTRIDGE DOOR

ATARI Home Computer 9-7 PAL


PARTS LIST (cont)


DOOR C014018 DOOR LATCH DOOR C014019 HINGE BRACKET DOOR C014020 DOOR SHIELD DOOR C014103 FOAM PAD DOOR C014104 CARTRIDGE DOOR SPRING DOOR CA014153 DOOR ASSY KEYBOARD CA014031 KEYBOARD ASSY REPLACEMENT LISTED KEYBOARD CA017999 KEYBOARD ASSY (REPLACEMENT FOR

P/N CA014031) MAIN 14-5101 RESISTOR 1/4W 100 OHM R1 01-118,155,157 MAIN 14-5102 RESISTOR 1/4W 1K R160,162,169,172 MAIN 14-5103 RESISTOR l/4W lOK R165 MAIN 14-5104 RESISTOR 1/4W lOOK R182 MAIN 14-5105 RESISTOR 1/4W 1 MEG R181 MAIN 14-5123 RESISTOR 1/4W 12K R168,173,176 MAIN 14-5124 RESISTOR 1/4W 120K R179 MAIN 14-5151 RESISTOR 1/4W 150 OHM Rl19-123,134-149

151-154 MAIN 14-5153 RESISTOR 1/4W 15K R167,176 MAIN 14-5182 RESISTOR 1/4W 1.8K R126-133,164 MAIN 14-5183 RESISTOR 1/4W 18K R161,171 MAIN 14-5271 RESISTOR 1/4W 270 OHM R158 MAIN 14-5272 RESISTOR 1/4W 2.7K R185 MAIN 14-5303 RESISTOR 1/4W 30K R178 MAIN 14-5332 RESISTOR 1/4W 3.3K R175 MAIN 14-5471 RESISTOR 1/4W 470 OHM R156,184 MAIN 14-5472 RESISTOR 1/4W 4.7K R170,174 MAIN 14-5473 RESISTOR 1/4W 47K R124,125 MAIN 14-5474 RESISTOR 1/4W 470K R183 MAIN 14-5623 RESISTOR 1/4W 62K R180 MAIN 14-5682 RESISTOR 1/4W 6.8K R166 MAIN 14-5912 RESISTOR 1/4W 9.1 K R163 MAIN 21-101473 CAP. POLY .047uF (lOOV) C135-142,181 MAIN 31-1N914 DIODE 1N914 CR101,103 MAIN 33-2N3906 TRANSISTOR 2N3906 Ql03,104,106 MAIN 34-2N3563 TRANSISTOR 2N3563 Ql05 MAIN 34-2N3904 TRANSISTOR 2N3904 Q107 MAIN C010448 CONNECTOR SOLDER (9 PIN) J101-104 (ALTERNATE

LISTED) MAIN C010727 CONNECTOR (9 PIN) J101-104 (ALTERNATE

FOR P/N C010448) MAIN C010816 HEX CMOS BUFFER (CD4050B) All1 MAIN C010821 CAP. POLY 820uF (50V) C177 ,178


PARTS LIST (cent)


MAIN C010823 INDUCTOR VARIABLE 0.6-1.2uH LlOl MAIN C012285 CRYSTAL 3.546894 MHz YlOl MAIN C012294 IC POKEY AlOl MAIN C012399 IC ROM Al05 MAIN C014179-03 CAP. CERAMIC AXIAL 1 OpF (50V) Cl87 MAIN C014179-05 CAP. CERAMIC AXIAL 47pF (50V) Cl83,194,196 MAIN C014179-12 CAP. CERAMIC AXIAL 68pF (50V) C193,195 MAIN C014180-03 CAP. CERAMIC AXIAL 100pF (50V) C185 MAIN C014181-01 CAP. CERAMIC AXIAL C1 01-125,127-134,

.001 uF (25V) 143-162,165-171' 184,201

MAIN C014181-02 CAP. CERAMIC AXIAL 173-176,180, .01uF (25V) 197-199

MAIN C014181-03 CAP. CERAMIC AXIAL C126,16.3,164,172, .1 uF (25V) 179,182,186,188-191'

202 MAIN C014322 CONNECTOR EDGE (22/44) J109 MAIN C014323 CONNECTOR EDGE (28/ 56) JllO MAIN C014336 IC 4051 Z101,102 MAIN C014339 IC 74LS10 Z104 MAIN C014344 IC 74LS138 Z105 MAIN C014361 IC 74LS42 Z103 MAIN C014371 CAP. ELEC AXIAL lOuF (16V) C192 MAIN C014379 RESISTOR NETWORK (9 X 4.7K) R150,159 MAIN C014380 INDUCTOR 22uH Ll15-117 MAIN C014384 INDUCTOR FERRITT BEAD Ll03-114,118 MAIN C014386-02 SOCKET IC (14 PIN) Z104 MAIN C014386-03 SOCKET IC (16 PIN) All1 ,Z1 01-103,105 MAIN C014386-07 SOCKET IC (24 PIN) A103-105 MAIN C014386-09 SOCKET IC (40 PIN) A101,102 MAIN C014389 Edge Connector (15/30) J108 MAIN C014394 TRANSISTOR MPS06 Q101 MAIN C014718-01 CONNECTOR HEADER (20 Pin) J107 MAIN C014720-01 HEADER RT ANGLE J106 MAIN C014778-02 CONNECTOR (22 PIN) J105 MAIN C014785 CONNECTOR SUPPORT BRACKET MAIN C014795 IC PIA (6520) A102 (ALTERNATE

LISTED) MAIN C014796 FASTENER LATCHING MAIN C014809 TRANSISTOR (MPSA55) Q102 MAIN C014812 IC PIA A102 (ALTERNATE

FOR P/N C014795)

AT ARI Home Computer 9-9 PAL


PARTS LIST (cont)


MAIN C015199 IC ROM- OS A104 MAIN C015299 IC ROM- OS A103 MAIN C015367 FISHPAPER INSULATOR MAIN C015925 INDUCTOR AXIAL .83uH L102 MAIN C016326 PC BOARD STABILIZER MAIN C060163-02 CAP. CERAMIC AXIAL .01uF C203 (EPOXY

INSULA TED TYPE ONLY))

MAIN CA011840 SPEAKER ASSY 63 OHM MAIN CA015960 PC BOARD ASSY (400 MAIN Assy) MODULE C014017 BOTTOM COVER MODULE C014075 PLUNGER INTERLOCK SWITCH MODULE CA014714 CASTING ASSY MODULE CA016098-01 MODULE ASSY (16K) MODULE CAO 16098-02 MODULE ASSY (8K) PWR SUPP 14-5331 RESISTOR 1/4W 330 OHM R201 PWR SUPP 14-5682 RESISTOR 1/4W 6.8K R203 PWR SUPP 31-1N4001 DIODE 1N4001 CR202-209 PWR SUPP 79-5903 CONNECTORPHONOJACK PWR SUPP C010173 SWITCH CHANNEL SELECT S20 1 (Replacement

for P/N C012242) PWR SUPP C010394 CAP. POLY FILM .22uF C203,208,211 PWR SUPP C012242 SWITCH CHANNEL SELECT S201 (ALTERN ATE

LISTED) PWR SUPP C012995 CONNECTOR RT ANGLE (13 PIN) J202 PWR SUPP C014059 PC BOARD PWR SUPP C014069 LED STAN DOFF PWR SUPP C014092 HEATSINK PWR SUPP C014181-0l CAP. CERAMIC AXIAL 213

.OOluF (25V) PWR SUPP C014181-03 CAP. CERAMIC AXIAL .1uF (25V) C206 PWR SUPP C014348 VOLT AGE REGULA TOR (5V) (7805) A202 PWR SUPP COI4349 VOLTAGE REGULATOR (12V) A201

(78M12) PWR SUPP C014370 CAP. ELEC AXIAL 470uF (16V) C201,202 PWR SUPP C014371 CAP. ELEC AXIAL 10uF (16V) C207 PWR SUPP C014373 CAP. ELEC AXIAL 2200uF (16V) C204,205 PWR SUPP C014374-01 CAP. ELEC RADIAL 4700uF (16V) C209 (ALTERN ATE

FOR P/N C014374-02) PWR SUPP C014374-02 CAP. ELEC RADIAL 4700uF (16V) C209 (ALTERN ATE

LISTED) PWR SUPP C014383 INDUCTOR AXIAL luH L201 PWR SUPP C014384 INDUCTOR FERRITT BEAD L202-205 PWR SUPP C014387 INTERLOCK SWITCH S202 PWR SUPP C014393 CAP. ELEC AXIAL 22uF (16V) C210


PARTS LIST (cent)


PWR SUPP C014397 SWITCH POWER S203 PWR SUPP C014715 POWER JACK J204 PWR SUPP C014716-02 CONNECTOR SOCKET J201 PWR SUPP C014718-03 CONNECTOR Header (5 Pin) J203 PWR SUPP C014771 . RESISTOR 2W 33 OHM R202 PWR SUPP C014777 LED DIODE CR210 PWR SUPP C014796 FASTENER LATCHING PWR SUPP C014808-01 DIODE ZENER 1N5231B (5.1V) CR201 PWR SUPP C015344 - _RIVET NYLON PWR SUPP CA014155 PC BOARD (POWER SUPPLY) P\VR SUPP C017988 DIODE (1N5391) CR206-209 PWR SUPP CA014708 HEATSINK ASSY RAM 14-5221 RESISTOR 14 W 220 OHM R501 RAM C014179-05 CAP. CERAMIC AXIAL 47pF (50V) C518 RAM C014181-0l CAP. CERAMIC AXIAL C521-523

.001 uF (25V) RAM C014181-02 CAP. CERAMIC AXIAL .OluF (25V) C503,507 ,511,515 RAM C014181-03 CAP. CERAMIC AXIAL .1 uF (25V) C50 1,502,504-506

508-510,512-519 . RAM C014313 IC 74LS244 Z502 RAM C014331 IC RAM 2505-512 RAM C014339 IC 74LS10 Z501 RAM C014345 IC 74LS158 2503,504 RAM C014386-02 SOCKET IC (14 PIN) A501 RAM C014386-03 SOCKET IC (16 PIN) A503-512 RAM C014386-05 SOCKET IC (20 PIN) A502 RAM C014804 INDUCTOR AXIAL LEAD 4.7uH L501 RAM CAO 14801-02 PC BOARD ASSY (8K) RAM CAO 14802-01 PC BOARD ASSY (16K) RFMOD C010470 SHIELD RF MOD C010471 COVER RF MOD C016071 RF MODULE RF MOD CA012174 RF MODULE "B" ASSY RF MOD· CA012175 PC BOARD



PARTS LIST


CPU 14-5102 RESISTOR 1/4W lK R302-306,313 CPU 14-5103 RESISTOR 1/4W !OK R314 CPU · 14-51RO RESISTOR 1 /4 W 1 OHM R317 CPU 14-5334 RESISTOR i/4W 330K R308 CPU 14-5471 RESISTOR 1/4W 470 OHM R316 CPU 14-5472 RESISTOR 1/4W 4.7K R301 ,307,310,311

312 CPU 14-5682 RESISITOR 1/4W 6.8K R315 CPU 19-411504 RESISTOR VARIABLE 500K R309 CPU 3~-2N3904 TRANSISTOR 2N3904 Q301 CPU C010821 CAP. POLY 820pF (50V) C308 CPU C014179-0l CAP. CERAMIC AXIAL 22pF (50V) C309 CPU C014179-14 CAP. CERAMIC AXIAL 56pF (50V) C310 CPU C014181-01 CAP. CERAMIC AXIAL C307

.OOluF (25V) CPU C014181-02 CAP. CERAMIC AXIAL C303,306

.OluF (25V) CPU C014181-03 CAP. CERAMIC AXIAL .luF (25V) C30 1,302,304,305 CPU C014313 IC 74LS244 Z302 CPU C014386-02 SOCKET IC (14 PIN) Z301,302 CPU C014386-05 SOCKET IC (20 PIN) Z303,304 CPU C014386-09 SOCKET IC (40 PIN) A301-303 CPU C014806 IC MPU (6502 Modified) A303 CPU C014887 IC ANTIC (PAL) A302 CPU C014889 IC GTIA (PAL) A301 CPU C016045 IC 74LS74 Z301 CPU C016074 NEOPRENE PAD CPU C017222 Inductor 1.5uH L303 CPU C017536 CRYSTAL 4.433618 Mhz Y301 CPU CA015967 PC BOARD ASSY (CPU PAL/UK) CABLE 78-24001 CABLE TIE CABLE C010389 TORROID CORE CABLE CA016234 COAXIAL CABLE CABLE CA016294 CABLE ASSY (UK) CONSOLE 88-1006 RUBBER FEET CONSOLE C012947 TOP COVER CONSOLE C012948 LOWER COVER CONSOLE C012970 LATCH CONSOLE C012971 ACTUATOR CONSOLE C012991 LENS CONSOLE C014170 SPRING LATCH CONSOLE CA014115 TOP COVER ASSY


PARTS LIST (cant)


CONSOLE CAO 16209-03 LOWER COVER ASSY CONSOLE CA016218-02 CONSOLE ASSY CONSOLE CA016218-03 CONSOLE ASY DOOR C012778 REAR SHIELD DOOR C012779 CARTRIDGE SHIELD DOOR C012939 CARTRIDGE COVER DOOR C012940 REAR COVER DOOR C014093 SPRING DOOR C014843 INNER SHIELD DOOR C014847-0l FOAM STRIP DOOR C014847-02 FOAM STRIP DOOR C015324 PAD DOOR CA014038 DOOR ASSY DOOR CA014848 SHIELD ASSY FINAL CA016238-01 ATARI 800/UK COMPUTER (16K) FINAL CA016238-02 ATARI 800/UK COMPUTER (8K) KEYBOARD C014710-03 CONNECTOR HOUSING (18 PIN) KEYBOARD C014778-01 CONNECTOR FLAT CABLE (18 PIN) KEYBOARD CA012952-02 KEYBOARD ASSY PRESENT VERSION

(MUL TICOLOR RIBBON) KEYBOARD CA015319 CABLE ASSY MAIN 14-5101 RESISTOR 1/4W 100 OHM R1 01,105,107,

110-126,168-174, 184-187

MAIN 14-5102 RESISTOR 1/4W lK R1 02,157,160,162, 165,166,199,202

MAIN 14-5103 RESISTOR 1/4W lOK R161,198 MAIN 14-5104 RESISTOR 1/4W lOOK R155 MAIN 14-5105 RESISTOR 1/4W 1 MEG R154 MAIN 14-5121 RESISTOR 1/4W 120 OHM R201 MAIN 14-5182 RESISTOR 1/4W 1.8K R130-137 ,190 MAIN 14-5183 RESISTOR 1/4W 18K R167,181,191,206 MAIN 14-5221 RESISTOR 1/4W 220 OHM R138-153,17 5-178,

200 MAIN 14-5222 RESISTOR 1/4W 2.2K R163,179 MAIN 14-5271 RESISTOR 1/4W 270 OHM R106,203 MAIN 14-5272 RESISTOR 1/4W 2.7K R159 MAIN 14-5332 RESISTOR 1/4W 3.3K R164,196 MAIN 14-5363 RESISTOR 1/4W 36K Rl80 MAIN 14-5392 RESISTOR 1/4W 3.9K R205



PARTS LIST (cont)


MAIN 14-5471 RESISTOR 1/4W 470 OHM R104 MAIN 14-5472 RESISTOR 1/4W 4.7K R183,192-195,197 MAIN 14-5473 RESISTOR 1/4W 47K R127,128 MAIN 14-5474 RESISTOR 1/4W 470K R156 MAIN 14-5681 RESISTOR 1/4\V 680 OHM R1 03,108,109 MAIN 14-5750 RESISTOR 1/4W 75 OHM R189,204 MAIN 14-5912 RESISTOR 1/4W 9.1K R182.188 MAIN 21-101473 CAP. MYLAR .047UF (100V) C127-134

(ALTERN A TED LISTED) MAIN 31-1N914 DIODE 1N914 CR101 ,1 02,104-108 MAIN 33-2N3906 TRANSiSTOR 2N3906 Q102,103107 MAIN 34-2N3563 TRANSISTOR 2N3563 Q106 MAIN 34-2N3904 TRANSISTOR 2N3904 Q101,104,105 MAIN C010174 TRANSISTOR ARRAY A104 MAIN C010394 CAP. POLY FILM .22uF (1 OOV) C103,180 Main C010448 CONNECTOR SOLDER R T ANGLE J110-113

(9 Pin) (ALTERN A TED LISTED) MAIN C010727 CONNECTOR R T ANGLE (9 PIN) J110-113

(ALTERNATE LISTED FOR P/N C010448))

MAIN C010816 HEX CMOS (4050B) A103 MAIN C010821 CAP. POLY 820pF (50V) C169,173 MAIN C010823 INDUCTOR VARIABLE 0.6-1.2uH L101 MAIN C012285 CRYSTAL 3.546894 MHZ X101 MAIN C012294 IC POKEY Al01 MAIN C014179-02 CAP. CERAMIC AXIAL 47pF (50V) C171 MAIN C014179-03 CAP. CERAMIC AXIAL 10pF (50V) C161 MAIN C014179-04 CAP. CERAMIC AXIAL 33pF (50V) C163 MAIN C014180-03 CAP. CERAMIC AXIAL lOOpF (50V) C164,170 MAIN C014180-05 CAP. CERAMIC AXIAL 200pF (50V) C174-176 MAIN C014180-09 CAP. CERAMIC AXIAL .047uF (50V) C127-134 (ALTERNATE

FOR P/N 21-101473) MAIN C014181-01 CAP. CERAMIC AXIAL .001 uF (25V) C1 04-121,123,

135-160,165,177,178 182-188,194-197' 200

MAIN C014181-02 CAP. CERAMIC AXIAL .01 uF (25V) C1 01,124,125, 190-193

MAIN C014181-03 CAP. CERAMIC AXIAL .1uF (25V) C122,126,162,172, 181,189,198

MAIN C014181-05 CAP. CERAMIC AXIAL .22uF (25V) C1 03,180 (ALTERNATE FOR P/N C010394)

MAIN C014322 CONNECTOR EDGE (22/44) J102-104,107 MAIN C014323 CONNECTOR EDGE (28/56) J101


PARTS LIST (cont)


MAIN C014336 IC (CD4051) Z103,104 MAIN C014347 IC 74LS243 Z105,106 MAIN C014361 IC 74LS42 Z101 MAIN C014362 IC 74LS32 · Z102 MAIN C014371 CAP. ELEC AXIAL 1 OUF (16V) C199

MAIN C014379 RESISTOR (9 x 4.7K) R129,158 MAIN C014384 INDUCTOR FERRITT BEAD L103-112 MAIN C014386-02 SOCKET IC (14 PIN) Zl05-106,A103-104 MAIN C014386-03 SOCKET IC (16 PIN) ZlOl-104 MAIN C014386-09 SOCKET IC (40 PIN) Al01,102 MAIN C014389 CONNECTOR EDGE (15/30) J108,109 MAIN C014392 CAP. ELEC RADIAL 10uF (16V) C179 MAIN C014718-02 CONNECTOR HEADER (22 PIN) J115 MAIN C014720-01 CONNECTOR HEADER J105

R T ANGLE (2 PIN) MAIN C014795 IC PIA (6520) A102 (ALTERNATE

LISTED) MAIN C014796 FASTENER • (JACK PANEL TO

MAIN) MAIN C014812 IC PIA A102 (ALTERNATE

FOR P/N C014795) MAIN C015306-01 CONNECTOR HEADER (18 PIN) Jl06 MAIN C015344 RIVET NYLON (SMALL) MAIN C015352 INSULA TOR LOWER SHIELD MAIN C015925 INDUCTOR .82uH L102 MAIN C016103 SUPPORT BLOCK MAIN CA011840 SPEAKER ASSY (63 OHM) MAIN CA014709 CABLE ASSY J114 MAIN CA015965 PC BOARD ASSY (800/UK) MODULE C012763 PRIMARY SHIELD (CASTING) MODULE C012764 LOWER SHIELD MODULE C012955 CARTRIDGE GUIDE MODULE C014001 CLAMP (MODULE ASSY -

SECURES CARTRIDGE DOOR ASSY)

MODULE C014837 GROUNDING CLIP MODULE CA016219 MODULE ASSY MODULE CA016236 CARTRIDGE LOCATOR ASSY PWR SUPP 14-5331 RESISTOR 1/4W 330 OHM R201,202 PWR SUPP 14-5912 RESISTOR 1/4W 9.1 K R204 PWR SUPP 21-101474M CAP. MYLAR .47UF (100V) C215 PWR SUPP 31-1 N4001 DIODE (1 N4001) CR202-205

ALTERN ATE LISTED)



PARTS LIST (cant)


PWR SUPP C010173 SWITCH CHANNEL SELECT S203 (REPLACEMENT FOR P/N C012242)

PWR SUPP C010394 CAP. POLY FILM .22uF (lOOV) C203,206 PWR SUPP C012242 SWITCH CHANNEL SELECT S203 (REPLACEMENT

LISTED) PWR SUPP C012980-04 KEYTOP (START) PWR SUPP C012980-05 KEYTOP (SELECT) PWR SUPP C012980-06 KEYTOP (OPTION) PWR SUPP C012990 KEYTOP (SYSTEM RESET) PWR SUPP C012995 CONNECTOR RT ANGLE (13 PIN) J204 PWR SUPP C014092 HEATSINK PWR SUPP C014179-03 CAP. CERAMIC AXIAL (1 OpF (50V) C214 PWR SUPP C014181-0l CAP. CERAMIC AXIAL. OOluF (25V) C212,216 PWR SUPP C014181-03 CAP. CERAMIC AXIAL .luF (25V) C209 PWR SUPP C014348 VOLT AGE REGULA TOR (5V) A202 PWR SUPP C014349 VOLTAGE REGULATOR (12V) A201 PWR SUPP C014370 CAP. ELEC AXIAL 470pF (16V) C201,202 PWR SUPP C014371 CAP. ELEC AXIAL lOuF (16V) C210,211 PWR SUPP C014373 CAP. ELEC AXIAL 2200uF (16V) C204,205 PWR SUPP C014374-01 CAP. ELEC RADIAL 4700uF (16V) C207,208

(ALTERNATE FOR P/N C0143674-02)

PWR SUPP C014374-02 CAP. ELEC RADIAL 4700uF (16V) C207 ,208 (ALTERNATE LISTED)

PWR SUPP C014383 INDUCTOR AXIAL 1 uH L201 PWR SUPP C014384 INDUCTOR FERRITE BEAD L202-205 PWR SUPP C014387 SWITCH INTERLOCK S201 PWR SUPP C014388 CONNECTOR SOCKET (DIN) J205 PWR SUPP C014397-0l SWITCH POWER S202 (ALTERNATE

LISTED) PWR SUPP C014397-02 SWITCH POWER 5202 (ALTERNATE FOR

P/N C014397-0l PWR SUPP C014398 DIODE RECTIFIER (MR501) CR206-209 PWR SUPP C014715 CONNECTOR POWER JACK J206 PWR SUPP C014716-01 CONNECTOR SOCKET (22 PIN) J201 PWR SUPP C017418-03 HEADER CONNECTOR (5 PIN) J207 PWR SUPP C014721-01 CONNECTOR R T ANGLE (4 PIN) J202 PWR SUPP C014771 RESISTOR 2W 33 OHM R203 PWR SUPP C014776 LED PILOT LAMP (MR501) CR210,211 PWR SUPP C014796 FASTENER LATCHING PWR SUPP C014808-0l DIODE ZENER (1N5231B) CR201 PWR SUPP C015344 RIVET NYLON PWR SUPP C016076 JACK PANEL


PARTS LIST (cont)


PWR SUPP C017988 DIODE (1N4001) CR202-205 (ALTERNATE FOR P/N 31-1N4001)

PWR SUPP CAO 11620-01 SWITCH PUSHBUTTON S204-207 (ALTERNATE LISTED)

PWR SUPP CAO 11620--02 SWITCH PUSHBUTTON S204-207 (ALTERNATE FOR P/N CA011620-01)

PWR SUPP CA0014708 HEA TSINK ASSY PWR SUPP CA016041 PC BOARD (800/UK PWR SUPP) RAM 14-5221 RESISTOR 220 OHM R501 RAM C014179-05 CAP. CERAMIC AXIAL 47pF (50V) C518 RAM C014181-01 CAP. CERAMIC AXIAL .001UF (25V) C521-523 RAM C014181-02 CAP. CERAMIC AXIAL .01UF (25V) C503,507 ,511,515 RAM C014181-03 CAP. CERAMIC AXIAL .1 UF (25V) C50 1,502,504-506,

508-510,512-519 RAM C014313 IC 74LS244 Z502 RAM C014331 IC RAM (16K) Z505-512 RAM C014339 IC 74LS10 Z501 RAM C014345 IC 74LS158 Z503,504 RAM C014386-02 SOCKET IC (14 PIN) A501 RAM C014386-03 SOCKET IC (16 PIN) A503-512 RAM C014386-05 SOCKET IC (20 PIN) A502 RAM C014804 INDUCTOR AXIAL 4.7UH L501 RAM CAO 14802-01 PC BOARD ASSY (16K) RAM CAO 14802-02 PC BOARD ASSY (8K) RF MOD C014716-04 CONNECTOR SOCKET (5 PIN) RF MOD C016011 UHF MODULATOR RF MOD C016042 PC BOARD RF MOD CA015952-02 RF ADAPTOR PC BOARD

ASSY (REV 2) ROM 14-51RO RESISTOR 1 OHM R404 ROM 14-5222 RESISTOR 2.2K R402 ROM 14-5471 RESISTOR 470 OHM R403 ROM 14-5472 RESISTOR 4.7K R401 ROM C012399 IC ROM A402 ROM C014179-05 CAP. CERAMIC AXIAL 47pF (50V) C407,409 ROM C014179-12 CAP. CERAMIC AXIAL 68PF (50V) C408,410 ROM C014181-01 CAP. CERAMIC AXIAL .001 uF (25V) C402 ROM C014181-03 CAP. CERAMIC AXIAL .1 uF (25V) C40 1,403,405,406 ROM C014181-12 CAP. CERAMIC AXIAL .01 uF (25V) C404,41 ROM C014312 IC 74LS09 Z403 ROM C014341 IC 74LSOO Z402 ROM C014344 IC 74LS138 Z401 ROM C014380 INDUCTOR 22UH L401-403

ATARI Home Computer 9-17 UK


PARTS LIST (cont)


ROM C014386-02 SOCKET IC (14 PIN) Z402,403 ROM C014386-03 SOCKET IC (16 PIN) Z401 ROM C014386-07 SOCKET IC (24 PIN) A401-403 ROM C015199 IC ROM- OS A403 ROM C015299 IC ROM- OS A401 ROM CA015961 PC BOARD (10K ROM)


PARTS LIST


CPU 14-5102 RESISTOR 1/4W lK R302-306,313 CPU 14-5103 RESISTOR 1/4W 10K R314 CPU 14-51RO RESISTOR 1/4W 1 OHM R317 CPU 14-5334 RESISTOR 1/4W 330K R308 CPU 14-5471 RESISTOR 1/4W 470 OHM R316 CPU 14-5472 RESISTOR 1/4W 4.7K R301 ,307,310,311

312 CPU 14-5682 RESISITOR 1/4W 6.8K R315 CPU 19-411504 RESISTOR VARIABLE 50 0K R309 CPU 34-2N3904 TRANSISTOR 2N3904 Q301 CPU C010821 CAP. POLY 820pF (50V) C308 CPU C014179-01 CAP. CERAMIC AXIAL 22pF (50V) C309 CPU C014179-14 CAP. CERAMIC AXIAL 56pF (50V) C310 CPU C014313 IC 74LS244 Z302 CPU C014386-02 SOCKET IC (14 PIN) Z301,302 CPU C014386-05 SOCKET IC (20 PIN) Z303,304 CPU C014386-09 SOCKET IC (40 PIN) A301-303 CPU C014806 IC MPU (6502 Modified) A303 CPU C014887 IC ANTIC (PAL) A302 CPU C014889 IC GTIA (PAL) A301 CPU C016045 IC 74LS74 Z301 CPU C016074 NEOPRENE PAD CPU C017222 Inductor 1.5uH L303 CPU C017536 CRYSTAL 4.433618 Mhz Y301 CPU CA015967 PC BOARD ASSY (CPU PAL/UK) CPU C014181-01 CAP. CERAMIC AXIAL .001 uF (25V) C307 CPU C014181-02 CAP. CERAMIC AXIAL .01uF (25V) C303,306 CPU C014181-03 CAP. CERAMIC AXIAL .1uF (25V) C301 ,302,304,305 CABLE 78-24001 CABLE TIE CABLE C010389 TORROID CORE CABLE CA014851 CABLE ASSY (PAL) CABLE CA016234 COAXIAL CABLE CONSOLE 88-1006 RUBBER FEET CONSOLE C012947 TOP COVER CONSOLE C012970 LATCH CONSOLE C012971 ACTUATOR CONSOLE C012991 LENS CONSOLE C014170 SPRING LATCH CONSOLE CA014115 TOP COVER ASSY



PARTS LIST (cont)


CONSOLE CA016206-0l CONSOLE ASSY (8K) CONSOLE CA016206-02 CONSOLE ASSY (16K) CONSOLE CA016209-0l LOWER COVER ASSY (16K) CONSOLE C012948 LOWER COVER DOOR C012778 REAR SHIELD DOOR C012779 CARTRIDGE SHIELD DOOR C012939 CARTRIDGE COVER DOOR C012940 REAR COVER DOOR C014093 SPRING DOOR C014843 INNER SHIELD DOOR C014847-0l fOAM STRIP DOOR C014847-02 FOAM STRIP DOOR C015324 PAD DOOR CA014038 DOOR ASSY DOOR CA014848 SHIELD ASSY FINAL CA016205-0l ATARI 800 PAL COMPUTER (16K) KEYBOARD C014710-03 CONNECTOR HOUSING (18 PIN) KEYBOARD C014778-0l CONNECTOR FLAT CABLE (18 PIN) KEYBOARD C015318 "RIBBON CABLE KEYBOARD CA012952-0l KEYBOARD ASSY EARLY VERSION

(WHITE RIBBON) KEYBOARD CA015319 CABLE ASSY MAIN 14-5101 RESISTOR l/4W 100 OHM Rl01,105,107,

110-126,168-174, 184-187

MAIN 14-5102 RESISTOR l/4W lK Rl02,157 ,160,162, 165,166,199,202

MAIN 14-5103 RESISTOR l/4W 10K R161,198 MAIN 14-5104 RESISTOR 1/4W lOOK Rl55 MAIN 14-5105 RESISTOR l/4W 1 MEG R154 MAIN 14-5121 RESISTOR l/4W 120 OHM R201 MAIN 14-5182 RESISTOR l/4W 1.8K Rl30-137 ,190 MAIN 14-5183 RESISTOR l/4W 18K Rl67,181,191,206 MAIN 14-5221 RESISTOR 1/4W 220 OHM R138-153,17 5-178,

200 MAIN 14-5222 RESISTOR l/4W 2.2K Rl63,179 MAIN 14-5271 RESISTOR l/4W 270 OHM Rl06,203 MAIN 14-5272 RESISTOR l/4W 2.7K Rl59 MAIN 14-5332 RESISTOR 1/4W 3.3K R164,196 MAIN 14-5363 RESISTOR 1/4W 36K Rl80 MAIN 14-5392 RESISTOR 1/4W 3.9K R205


PARTS LIST (cont)


MAIN 14-5471 RESISTOR 1/4W 470 OHM R104 MAIN 14-5472 RESISTOR 1/4W 4.7K R183,192-195,197 MAIN 14-5473 RESISTOR 1/4W 47K R127 ,128 MAIN 14-5474 RESISTOR 1/4W 470K R156 MAIN 14-5681 RESISTOR 1/4W 680 OHM R103,108,109 MAIN 14-5750 RESISTOR 1/4W 75 OHM R189,204 MAIN 14-5912 RESISTOR 1/4W 9.1K R182.188 MAIN 21-101473 CAP. MYLAR .047UF (lOOV) C127-134

(ALTERN A TED LISTED) MAIN 31-1 N914 DIODE 1N914 CR1 01,102,104-108 MAIN 33-2N3906 TRANSISTOR 2N3906 Q102,103107 MAIN 34-2N3563 TRANSISTOR 2N3563 Ql06 MAIN 34-2N3904 TRANSISTOR 2N3904 Q101,104,105 MAIN C010174 TRANSISTOR ARRAY A104 MAIN C010394 CAP. POLY FILM .22uF (1 OOV) C103,180 Main C010448 CONNECTOR SOLDER RT ANGLE Jll0-113

(9 Pin) (ALTERN A TED LISTED) MAIN C010727 CONNECTOR R T ANGLE (9 PIN) Jll 0-113

(ALTERNATE LISTED FOR P/N C010448))

MAIN C010816 HEX CMOS (4050B) Al03 MAIN C010821 CAP. POLY 820pF (50V) Cl69,173 MAIN C010823 INDUCTOR VARIABLE 0.6-1.2uH L101 MAIN C012285 CRYSTAL 3.546894 MHZ Xl01 MAIN C012294 IC POKEY AlOl MAIN C014179-02 CAP. CERAMIC AXIAL 47pF (50V) Cl71 MAIN C014179-03 CAP. CERAMIC AXIAL 10pF (50V) C161 MAIN C014179-04 CAP. CERAMIC AXIAL 33pF (50V) C163 MAIN C014180-03 CAP. CERAMIC AXIAL lOOpF (50V) C164,170 MAIN C014180-05 CAP. CERAMIC AXIAL 200pF (50V) C174-176 MAIN C014180-09 CAP. CERAMIC AXIAL .047uF (50V) C127-134 (ALTERNATE

FOR P/N 21-101473) MAIN C014181-01 CAP. CERAMIC AXIAL .001 uF (25V) C1 04-121,123,

135-160,165,177,178 182-188,194-197' 200

MAIN C014181-02 CAP. CERAMIC AXIAL .01uF (25V) C101,124,125, 190-193

MAIN C014181-03 CAP. CERAMIC AXIAL .1uF (25V) C122,126,162,172, 181,189,198

MAIN C014181-05 CAP. CERAMIC AXIAL .22uF (25V) C103,180 (ALTERNATE FOR P/N C010394)

MAIN C014322 CONNECTOR EDGE (22/44) J102-104,107 MAIN C014323 CONNECTOR EDGE (28/56) J101


AT ARI 800 COMPUTER CONSOLE PARTS LIST

PARTS LIST (con t)


MAIN C014336 IC (CD4051) 2103,104 MAIN C014347 IC 74LS243 2105,106 MAIN C014361 IC 74LS42 2101 MAIN C014362 IC 74LS32 2102 MAIN C014371 CAP. ELEC AXIAL 10UF (16V) C199

MAIN C014379 RESISTOR (9 x 4.7K) R129,158 MAIN C014384 INDUCTOR FERRITT BEAD L103-112 MAIN C014386-02 SOCKET IC (14 PIN) 2105-1 06,A1 03-104 MAIN C014386-03 SOCKET IC (16 PIN) 2101-104 MAIN C014386-09 SOCKET IC (40 PIN) A101,102 MAIN C014389 CONNECTOR EDGE (15/30) J108,109 MAIN C014392 CAP. ELEC RADIAL 10uF (16V) C179 MAIN C014718-02 CONNECTOR HEADER (22 PIN) Jl15 MAIN C014720-01 CONNECTOR HEADER J105

R T ANGLE (2 PIN) MAIN C014795 IC PIA (6520) A102 (ALTERNATE

LISTED) MAIN C014812 ICPIA A1 02 (ALTERNATE

FOR P/N C014795) MAIN C015306-01 CONNECTOR HEADER (18 PIN) J106 MAIN C015344 RIVET NYLON (SMALL) MAIN C015352 INSULA TOR LOWER SHIELD MAIN C015925 INDUCTOR .82uH L102 MAIN C016103 SUPPORT BLOCK MAIN CA011840 SPEAKER ASSY (63 OHM) MAIN CA014709 CABLE ASSY Jll4 MAIN CA015965 PC BOARD ASSY (800/UK) MODULE C012763 PRIMARY SHIELD (CASTING) MODULE C012764 LOWER SHIELD MODULE C012955 CARTRIDGE GUIDE MODULE C014001 CLAMP (MODULE ASSY -

SECURES CARTRIDGE DOOR ASSY)

MODULE C014837 GROUNDING CLIP MODULE CA016207 MODULE ASSY MODULE CA016236 CARTRIDGE LOCATOR ASSY PWR SUPP 14-5331 RESISTOR 1/4W 330 OHM R201,202 PWR SUPP 14-5912 RESISTOR 1/4W 9.1K R204 PWR SUPP 21-101474M CAP. MYLAR .47UF (lOOV) C215 PWR SUPP 31-1N4001 DIODE (1 N4001) CR202-205

ALTERNATE LISTED)

ATARI sao· coMPUTER CONSOLE PARTS LIST

PARTS LIST (cont)


PWR SUPP C010173 SWITCH CHANNEL SELECT S203 (REPLACEMENT FOR P/N C01224-2)

PWR SUPP C010394- CAP. POLY FILM .22uF (1 OOV) C203,206 PWR SUPP C01224-2 SWITCH CHANNEL SELECT S203 (REPLACEMENT

LISTED) PWR SUPP co 12980-04- KEYTOP (START) PWR SUPP C012980-05 KEYTOP (SELECT) PWR SUPP C012980-06 KEYTOP (OPTION) PWR SUPP C012990 KEYTOP (SYSTEM RESET) PWR SUPP C012995 CONNECTOR RT ANGLE (13 PIN) J204-PWR SUPP C014-092 HEATSINK PWR SUPP C014-179-03 CAP. CERAMIC AXIAL (1 OpF (50V) C214-PWR SUPP C014-181-01 CAP. CERAMIC AXIAL. OOluF (25V) C212,216 PWR SUPP C014-181-03 CAP. CERAMIC AXIAL .luF (25V) C209 PWR SUPP C014-34-8 VOLT AGE REGULA TOR (5V) A202 PWR SUPP C014-34-9 VOLT AGE REGULATOR (12V) A201 PWR SUPP C014-370 CAP. ELEC AXIAL 4-70pF (16V) C201,202 PWR SUPP C014-371 CAP. ELEC AXIAL 10uF (16V) C210,211 PWR SUPP C014-373 CAP. ELEC AXIAL 2200uF (16V) C204-,205 PWR SUPP C014-374--01 CAP. ELEC RADIAL 4-700uF (16V) C207,208

(ALTERN ATE FOR P/N COll!-3674--02)

PWR SUPP COll!-374--02 CAP. ELEC RADIAL 4-700uF (16V) C207 ,208 (ALTERN ATE LISTED)

PWR SUPP C014-383 INDUCTOR AXIAL 1 uH L201 PWR SUPP C014-384- INDUCTOR FERRITE BEAD L202-205 PWR SUPP C014-387 SWITCH INTERLOCK S201 PWR SUPP C014-388 CONNECTORSOtKET(Dm) J205 PWR SUPP C014-397-01 SWITCH POWER S202 (ALTERNATE

LISTED) PWR SUPP C014-397-02 SWITCH POWER S202 (ALTERN ATE FOR

P/N COll!-397-01 PWR SUPP C014-398 DIODE RECTIFIER (MR501) CR206-209 PWR SUPP C014-715 CONNECTOR POWER JACK J206 PWR SUPP COll!-716-01 CONNECTOR SOCKET (22 PIN) J201 PWR SUPP C0174-18-03 HEADER CONNECTOR (5 PIN) . J207 PWR SUPP COll!-721-01 CONNECTOR R T ANGLE (4- PIN) J202 PWR SUPP C014-771 RESISTOR 2W 33 OHM R203 PWR SUPP C014-776 LED PILOT LAMP (MR501) CR210,211 PWR SUPP C014-796 FASTENER LATCHING PWR SUPP COll!-808-01 DIODE ZENER (lN5231B) CR201 PWR SUPP C01534-4- RIVET NYLON PWR SUPP C016076 JACK PANEL



PARTS LIST (con t)


PWR SUPP C017988 DIODE (1N4001) CR202-205 (ALTERNATE FOR P/N 31-1N4001)

PWR SUPP CA011620-01 SWITCH PUSHBUTTON S204-207 (ALTERNATE LISTED)

PWR SUPP CA011620-02 SWITCH PUSHBUTTON S204-207 (ALTERNATE FOR P/N CA011620-0l)

PWR SUPP CA014171 PC BOARD ASSY (800/PAL PWR SUPP)

PWR SUPP CA0014708 HEA TSINK ASSY RAM 14-5221 RESISTOR 220 OHM R501 RAM C014179-05 CAP. CERAMIC AXIAL 47pF (50V) C518 RAM C014181-01 CAP. CERAMIC AXIAL .001UF (25V) C521-523 RAM C014181-02 CAP. CERAMIC AXIAL .01 UF (25V) C503,507 ,511,515 RAM C014181-03 CAP. CERAMIC AXIAL .1UF (25V) C501 ,502,504-506,

508-510,512-519 RAM C014313 IC 74LS244 Z502 RAM C014331 IC RAM (16I<) Z505-512 RAM C014339 IC 74LS10 Z501 RAM C014345 IC 74LS158 Z503,504 RAM C014386-02 SOCKET IC (14 PIN) A501 RAM C014386-03 SOCKET IC (16 PIN) A503-512 RAM C014386-05 SOCKET IC (20 PIN) A502 RAM C014804 INDUCTOR AXIAL 4.7UH L501 RAM CA014802-01 PC BOARD ASSY (16K) RAM CAO 14802-02 PC BOARD ASSY (8K) RF MOD C010470 SHIELD RF MOD C010471 COVER RFMOD C016071 RF MODULE RF MOD CA012174 RF MODULE "B" ASSY RF MOD CA01217504 PC BOARD (RF MODULE) ROM 14-51RO RESISTOR 1 OHM R404 ROM 14-5222 RESISTOR 2.2K R402 ROM 14-5471 RESISTOR 470 OHM R403 ROM 14-5472 RESISTOR 4.7K R401 ROM C012399 IC ROM A402 ROM C014179-05 CAP. CERAMIC AXIAL 47pF (50V) C407,409 ROM C014179-12 CAP. CERAMIC AXIAL 68PF (50V) C408,410 ROM C014181-01 CAP. CERAMIC AXIAL .001 uF (25V) C402 ROM C014181-03 CAP. CERAMIC AXIAL .luF (25V) C40 1,403,405,406 ROM C014181-02 CAP. CERAMIC AXIAL .01uF (25V) C404,411 ROM C014312 IC 74LS09 Z403 ROM C014341 IC 74LSOO Z402 ROM C014344 IC 74LS138 Z401 ROM C014380 INDUCTOR 22UH L401-403


PARTS LIST (cont)


ROM C014386-02 SOCKET IC (14 PIN) 2402,403 ROM C014386-03 SOCKET IC (16 PIN) Z401 ROM C014386-07 SOCKET IC (24 PIN) A401-403 ROM C015199 IC ROM- OS A403 ROM C015299 IC ROM- OS A401 ROM CA015961 PC BOARD (lOK ROM)


SECTION 10

SERVICE BULLETINS

This section is to be used by you to file the three classification of service bulletins which are periodically released by the Manager of Technical Support.

The following are brief descriptions of each classification:

FIELD CHANGE ORDER

A Field Change Order describes hardware or software changes to AT ARI Computer products and instructs how to implement these changes.

To indicate your required action, a Field Change Order is issued as one of the following two categories:

MANDATORY - This identifies a failure mode which affects reliability and describes a procedure to correct the failure. This procedure must be performed on all units serviced or repaired.

AS FAILS - This identifies a failure mode which affects reliability and describes a procedure to correct the failure mode. This procedure must be performed on all units in for service or repair.

UPGRADE BULLETINS

An Upgrade Bulletin describes product inprovements or modifications which the consumer may wish to purchase. These Bulletins allow you to modify the customer's unit to add capabilities which may not have been available when the unit was originally manufactured.

TECH TIPS

A Tech Tip is a document of a general nature which transmits routine service or repair information. By communicating methods developed since you attended training classes, Tech Tips aid to continuously improve repair skills and increase knowledge of AT ARI Computer Products.

Other times, ·Tech Tips alert you to units which have been modified and are now standard from AT ARI Manufacturing, but are different from many existing units and require different repair techniques.


)1\-. ATARIJD

Consumer Product Service Manager of Tehnical Support

UPGRADE BULLETIN MOOEL: A TARI 400/800 COMPUTERS OATE:

SUBJECT:

GTIA Chip

CHANGE DESCRIPTION:

number _.,.jj __ May 28, 1982

New units manufactured by Atari contain the Graphic Television Interface Adapt (GTIA) chip on the .CPU printed circuit board. The GTIA chip is an enhancement of the Color Television Interface Adapter (CTIA) chip and may be purchased as an upgrade to existing units.

Part Location- CPU printed circuit board location A301.

INSTALLATION PROCEDURES:

For troubleshooting, installation, and testing, observe warnings or cautions stated in Atari Home Computer Division 400/800 Home Computer System Field Service ManuaL Before a chip or board is added to or removed from the system, power the system down.

Follow disassembly instructions in 4-00/800 Field Service Manual.

Remove C012295 from location A301 on CPU printed circuit board.

Install COll!-805 in location A301 on CPU printed circuit board.

TESTING PROCEDURES:

Follow standard Test Procedures using Atari Stand Alone Test (Diagnostic) as outlined in Atari 4-00/800 Computer System Service Manual.

CONSUMER INFORMATION:

The GTIA chip adds three graphics modes accessible with BASIC for a total of eleven different graphics modes in BASIC and 256 different colors.

The GTIA chip is fully compatible with software written to run on existing CTIA units. Software which is written to run on the GTIA chip using its enhanced features is not displayed correctly with . CTIA units.

)1\. ATARf


UPGRADE BULLETIN MOOEl.: AT ARI 400/800 COMPUTERS OATE:

PARTS DISPOSmON:

Not Applicable

ENCLOSURES:

CPU Silk Screen

number __ _

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.IT\. ATARf'


UPGRADE BULLETIN MODEL: ATARI 400/800 COMPUTERS DATE:

SUBJECT:

GTIA Chip

CHANGE DESCRIPTION:

number _ _.1.___ May 28, 1982

New units manufactured by Atari contain the Graphic Television Interface Adapt (GTIA) chip on tt)e CPU printed circuit board. The GTIA chip is an enhancement of the Color Television Interface Adapter (CTIA) chip and may be purchased as an upgrade to existing units.

Part Location- CPU printed circuit board location A301.

INSTALLATION PROCEDURES:

For troubleshooting, installation, and testing, observe warnings or cautions stated in Atari Home Computer Division 400/800 Home Computer System Field Service ManuaL Before a chip or board is added to or removed from the system, power the system down.

Follow disassembly instructions in 4-00/800 Field Service Manual.

Remove C012295 from location A301 on CPU printed circuit board.

Install COlll-805 in location A301 on CPU printed circuit board.

TESTING PROCEDURES:

Follow standard Test Procedures using Atari Stand Alone Test (Diagnostic) as outlined in Atari 4-00/800 Computer System Service Manual.

CONSUMER INFORMATION:

The GTIA chip adds three graphics modes accessible with BASIC for a total of eleven different graphics modes in BASIC and 256 different colors.

The GTIA chip is fully compatible with software written to run on existing CTIA units. Software which is written to run on the GTIA chip using its enhanced features is not displayed correctly with CTIA units.

Consumer Product Service Manager of TehnicaJ Support

UPGRADE BULLETIN number __

MODEl.: ATARI 400/800 COMPUTERS I DATE:

PARTS DISPOSmON:

Not Applicable

ENCLOSURES:

CPU Silk Screen

~ 10£1

N 10£'V

bf.___ __ j

...

CPU

CPU Board Silkscreen

)1\. ATARf'

Consumer Product Service Manager of· Tehnical Support

TECH .TIP number----2 ___ _

MODEL: Atari 400/800 Computers DATE: May 28, 1982

SUBJECT:

Revision B, Operating System ROMS.

DESCRIPTION:

New Atari 400/800 computers contain Revision B ROMs - a refined version of an Operating System ROM, which has a different checksum from Revision A ROMs. When replacing these components, do not mix revision levels. System will not operate if Revision A is paired with Revision B.

Parts:

Old ROMS: C012499A and C014599A

Rev B ROMS: C012499B and C014599B

Part Location:

400 Computer System- Motherboard location A103 (C014599) and A104 (C012499)

800 Computer System- Personality Board Location A40l.(C014599) and A403 (C012499).

You can recognize the new part in this manner:

Top is imprinted with a copyright symbol followed by 1981 Atari.

TROUBLESHOOTING AND MAINTENANCE PROCEDURES:

For troubleshooting, maintenance and testing, observe warnings and cautions stated in Atari 400/800 Home Computer System Service Manual. Before a component or board is added to or removed from the system, power the system down.

If ROM chips are defective or if printer overprints (hiccups), replace ROM chips.


TECH· TIP number __ _

MODEL: Atari 400/800 Computers DATE:

'"1·

' !"":.>, /",;

400 Computer

Follow 400 computer disassembly instructions in 400/800 Home Computer System Service Manual to access motherboard.

Remove ROM chips located at A103 (C014599A) and Al04 (C012499A).

Replace C014599A and C012499A with A103 (C014599B) and Al04 (CO 124998).

Follow reassembly instructions in 400/800 Home Computer System Service Manual.

800 Computer

Follow 800 computer disassembly instructions in 400/800 Home Computer. . . System Service Manual Section to ~ccess ROM module. t~

Remove ROM chips located at A401 (C014599A) and A403 (C012499A) on ROM module.

Replace C014599A and C012499A with A401 (C014599B) and A403 (C012499).

Follow reassembly instructions in your 400/800 Home Computer System ~·Service Manual under ROM Module Installation •

. TESTING PROCEDURES:

Follow standard test procedures using Atari Stand Alone Test (Diagnostic) as outlined in Atari 400/800 Computer System Service Manual.

ENCLOSURE:

1. 400 Motherboard, placement

2. 800 Personality Board, placement

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TECH TIP number_,._ -__.2 ___ _ MODEL: Atari 400/800 Computers DATE: May 28, 1982

SUBJECT:

Revision B, Operating System ROMS.

DESCRIPTION:

New Atari 400/800 computers contain Revision B ROMs - a refined version of an Operating System ROM, which has a different checksum from Revision A ROMs. When replacing these components, do not mix revision levels. System will not operate if Revision A is paired with Revision B.

Parts:

Old ROMS: C012499A and C014599A

Rev B ROMS: C012499B and C014599B

Part Location:

400 Computer System- Motherboard location A103 (C014599) and A104 (C012499)

800 Computer System -Personality Board Location A401 (C014599) and A403 (C012499).

You can recognize the new part in this manner:

Top is imprinted with a copyright symbol followed by 1981 Atari.

TROUBLESHOOTING AND MAINTENANCE PROCEDURES:

For troubleshooting, maintenance and testing, observe warnings and cautions stated in Atari 400/800 Home Computer System Service Manual. Before a component or board is added to or removed from the system, power the system down.

If ROM chips are defective or if printer overprints (hiccups), replace ROM chips.

Jl\. Consumer Product Service Manager of· Tehnical Support ATARI;t ''·"

TECH TIP number __ ~--MODEL: A tari 400/800 Computers DATE:

400 Computer

Follow 400 computer disassembly instructions in 400/800 Home Computer ... System Service Manual to access motherboard.

Remove ROM chips located at A103 (C014599A) and A104 (C012499A). · .. <>< "'.'Jt:'·· ............. .

Replace C014599A and C012499A with A103 (C014599B) and A104 · -- .~ .. (CO 124998).

Follow reassembly instructions in 400/800 Home Computer System Serv~ce ... Manual.

800 Computer

Follow 800 computer disassembly instructions in 400/800 Home Computer · System Service Manual Section to access ROM module.

Remove ROM chips located at A401 (C014599A) and A403 (C012499A) on.~ROM module.

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Replace C014599A t·and C012499A with A401 (C014599B) and A4(}3 ". · ;1r:;

(C012499). :. . "

> Follow reassembly instructions in your 400/800 Home Computer System : .... Service Manual under ROM Module Installation. :•.

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TESTING PROCEDURES: ' ., ~ ... ·-Follow standard test procedures using Atari Stand Alone Test (Diagnostic) as outlined:···' ,j in Atari 400/800 Computer System Service Manual.

ENCLOSURE:

1. , 400 Motherboard, placement

2. 800 Personality Board, placement '"".

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Documents

400/800 PAL. AND UK. · 2017-08-25 · technician. The Diagnostic Flowcharts (Section 5 and 7) provide detailed diagnostics and repair procedures for technicians not completely familiar