SAMS C4P Service Manual

for COMPUTER BOARDS 502, 505, 527, 540 If 542 ~s used in---------------------,

hallenger Series MOOELC4P

MOOELC4PMF

&/1 'HWH"IJ/

TABLE OF CONTENTS

Adjustments 502 Board (C4P) ... . .. .. .. . . ...• . ....• ... . . ..... ••.....•.....•..... 48 505 Board (C4PMF) ..... ..•. ....•.. .. . . .. .. . • .. . ... . . ....... . . • . .. . 77 540 Board (C4P/C4PM F) ..... ...• .. ...•.....•.....• . .. . ..•. .. . . . .. . . 43

Block Diagrams Body Block (C4P) .. . .. . ..... . .. .. ..... . .... . .. ... . .. . .. . • .. . .. ... 59,60 Body Block (C4PM F) ............•.....•.....•. ....•.. ...•........ 63,64 Skeleton Block (C4P) . . ............ . . .. . .... .. .... . ... . •.. ..••....... 1 Skeleton Block (C4PM F) .. .... ..... . .. . .. .... .. . .. •..... • . ....••..... 2

Disassembly Instructions (C4P/C4PMF) . . ...............•.....•.....•...... 1 General Servicing/Safety Precautions (C4P/C4PMF) .. . .. . . ........... • . ...... 1 Legends

502 Board (C4P) ... .. .. .•.....•.....••....••.... .• . . ...•.....•..... 91 505 Board (C4PM F) ..... . .. .. • .. . . . •.....• •. . ..• .. ...••.. .• ... ..... 91 527 Board (C4PM F) .. .. . ... .••... .. .... . .... . .. . •........... . ...... 92 540 Board (C4P/C4PM F) . . ..... • .. . .. •.....••....•.....••........... 92 542 Board (C4P/C4PM F) ..... '.' .••.. . . . •. .. . • •. . ...•... . . .. .. Rear Cover

Parts List ....... . .. . ...... . . .••. .. ........ • ..... . .. .. . •.... . ... 14 thru 26 Photos

A 15 Board (C4P) .. ................. • . .. . . •. .. . .•... .. • ............. 62 A15 Board (C4PMF) ........ . .... .. .•. ....•..... . .. . .•. .. . .••.. . .. .. 78 Board - Chassis Layout (C4P) . .. .. . ..•• ....• . .. .. •. . ..••....• . ...... . . 3 Board - Chassis Layout (C4PM F) . .. ..• . .. . .• . ... .. ....•..... . .... .. ... 4 Chassis - Side View (C4P) . ... .. . ...• ....•• ....• ... . .•.. ........ . ... . 48 Chassis - Side View (C4PM F) ...... . .• .. .. .•.. . .. .. ... . .............. 83 502 Board (C4P) ....... ... . .. .. .....• . ...•....• .. .. . .. ...... 49,50,52,53 505 Board (C4PM F) ..........•....••....•..... .....•... .. . .. 79,80,81,82 527 Board (C4PMF) .... . .... . .. ...... .. ..•....•. .. .•......... .. . . 89,90 540 Board (C4P/C4PMF) . ... .. .• ...... .. .. •.. . ... .. .•........ 44,45,46,47 542 Board (C4P/C4PMF) .. .. .. •.....•....•.. . •. . .. .•.. ..•......... 27,28

Pinouts 502 Board (C4P) ........•....•.....•... . • ....•.....• .. . .•.... . . .... 51 505 Board (C4PMF) .........••. . . .•.. ..• .. .. .• .... ••.. .• • • . . ..... 65,66 527 Board (C4PM F) ...... . ..•....... .........•.. .. •.....• . . .. .. .... 83 540 Board (C4P/C4PM F) ....... •....•.....•. .. .•. . ...•. . ..••.. .... 32,33 542 Board (C4P/C4PMF) .. . . .••.. .••. . . .•.....•.. ..• •....•.... . .. .. . 31

Schematics A 15 Board (C4P) ..... .. •. . .. .• . ... • .. .. .• . ........ . .. ..... . ... . .. .. 61 502 Board (C4P) . . .... .•.. ..• ... . ... .. ..•... .. . .. .. . .. . . .. .. 55,56,57,58 505 Board (C4PMF) ... . ..... •.....•.....•.... •... . 67,68,69,70,73,74,75,76 527 Board (C4PMF) .... . . .. •. . .. . .. .. . • ... .. • ........ ....... . 84 thru 88 540 Board (C4P/C4PM F) . ..• . . . . .• •.. . • •....•.. . . . . . .. . .. . .. .. 35 thru 41 542 Board (C4P/C4PM F) ... . . •... . .•.....• .... .• . .. . .• ............ 29,30

Schematic Notes .... . .. .... . . . .•. ....•.... . •. . .. . •.... . .. ..... Rear Cover Special Servicing Instructions

C4P .............. . . .. .. . . ..... • .. ...•.... . •. . ...•. . ...• . .. . .... .. 3 C4PMF . . .. ..... ... . . .. . .• . .......... .. .... •..... • . .. . . . •. .... . ... 4

Troubleshooting Guide C4P .. .. .. . ... . .. . .......•.... . • . .. .. • . . ...• . .. . .• . .. . .•...... 5,6,7,8 C4PM ...... .. . .. _ ... . . •.. . ..•.... . •.... . •.... . •.....• .. . ... 9thru 13

Waveforms 502 Board (C4P) . .......... • .. . .. •.....•.....•.....• .. . .. • . . .. .. ... 54 505 Board (C4PMF) .......•... . .•... . . •. . ...•.. .. ••. .. . .•. . . .. 71 ,72,77 540 Board (C4P/C4PM F) ...• ........... . ... . .. • .. . .. •... . .•.... 34,42,43

Copyright (j) 1980 by Howard W. Sarns & Co., Inc. Indianapolis, Indiana 46206. Printed in the United States of America

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LEGEND FOR 542 BOARD SCHEMATIC

AO ,Al . ........ . . . ... .. . . ..... . Address CO-C7 . ..... . ...... . ... . ...... . Column KBE ..... . ........ . ... Keyboard Enable KDO-KD7 .. . .. . ...... . ... Keyboard Data NI . . . ...... . . . ...... . .... Noise Inhibit NOISE 1 ... .. ....... . ...... . . .. .. Noise NOISE 2 . . . ...... . ...... . . .. ... . . Noise RESET . ..... .. . .. .. . . . . . .... . .... Reset RO-R7 .. ... .. . .......... . . . .... . . . Row SO-57 . . .. .. . ... . . ...... . ...... . Sound 1 R/W .. . .... . .... . . 1 nternal Read/Write

Any Bar above any alphabetical or numerical combination indicates line active in a low (0) state.

SCHEMATIC NOTES

__ Circuitry not used in some versions. Circuitry used in some versions. * Nominal value

+ Ground rrln ChaSSIS : Flame retardant resistor

9 See parts list

Item numbers in rectangles appear in the atignment/adjustment instructions.

Supply voltage maintained as shown In input. Voltages measured with digitat meter. Terminal Identification may not be found on unit. Resistors are '1.W or less. 5% unless noted. Value In ( ) used In some versions .

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$15.95

IIIIIITIFII 1333 S. Chillicothe Road

Aurora, Ohio 44202

C4P/C4PMF - GENERAL SERVICING/SAFETY PRECAUTIONS

Use an isolation transformer for bench servic· e ing.

Do not use a soldering device which has cur· rent flowing in its tip.

Maintain line voltage at 120VAC.

Remove power from unit before removing or in· stalling chips.

Use an isolation (times 10) probe on scope.

Do not remove or install boards or minifloppy with unit turned on.

Use extreme caution when handling printed cir· cuit boards. Ground yourself before handling

. boards.

Install RAM in Chip Enable sequence only.

Caution: Ground path on the boards is parallel to the B + path on the opposite side of the board.

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C4P/C4PMF - DISASSEMBLY INSTRUCTIONS

Lay unit on a protective surface with top side down.

Remove six screws from cabinet bottom and remove cabinet bottom. Remove ground lead from cabinet bottom.

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SYSTEM BASIC , INTERNAL , , SYSTEM PERIPHERAL ,

MONITOR LANCUAGE TRANSFER ... TRANSfER CASSETIE

'I ' A 'I ' • , C A 'I C • MICRO ,

PROCESSOR , •

502 BOARD ---------------- ... -------_ .. _--- ............... _-- ----------------_ .. _ ..

.. -- ------------- --------------------------, , INTERNAl , .....!. COlORJBW VIDEO VIDEO

TRANSfER ... GENERATOR MONITOR

, , , ~

,

, INTERNAl , , At At TRANSfER CONTROL

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540 BOARD L. __ - ----------------------------------------~

.............. _-, .. -- - ----------------------------------------, A15 BOARD' 542 BOARD:

.. , ,

POlLED POLLED AUDIO ,

AUDIO INPUTS KEYBOARD CENERATOR , , , ,

'I .~ C , , ,

DIGITAL TO ,

ANalOG 'Ae CONVERTER

, , • , •

----------~ ----------------------------------------------~

C4P - SKelETON BLOCK

,--------_._---_ .. _ ...... _----.. _._---------_._-------------50S BOARD

MICRO · SYSTEM ,-J INTERNAL 0 INTERNAL 0 p MONITOR TRANSfER TRANSfER ~- ..... -... -- .. -.----.. • PART OF 0

A15 BOARD , , A

'I E 0 , , OS! , BU' 0 A •

0 PERIPHERAL 0 PORT TRANSfER • , A

PORT B

0 INTERNAL 0 TRANSFER

L RS232 UO , , RS232

OUTPUT

• • _._ ........ _-_._- ... _-_ .. • flOPPY 0 • 0 0 • TIMING ,----L FLOPPY • • • • 'I • , • • 0 PERIPHERAL

t-t-• • A TRANSFER • • • ... _---- .. _._._-- ... ... --- ... _------_ .. __ ............ -_._ ..... _---_ ... . ... ... r································· • 0 INTERNAL t----L SYSTEM

TRANSfER MEMORY

, , 'I 527

BOARD ... _._- ---------- ... _------_ ...... _ ... __ ... __ ... _ ........ .1

r ... _ .... _------------------ -_._-----_.-----_ .. _--------_ .. _-540 BOARD

~ COlOR/BW INTERNAL VIOEO

0 TRANSfER 0 0 MEMORY GENERATOR

, , 0 ,

0 INTERNAL 0 At TRANSFER CONTROL

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. -_ .. - -.-... ---.-----.----.. -... -------- .. -----.-.----.-.--.----~ .......... _-_._-. ., • ._- ...--.. ---... ---.----.---.---... -----...... -... -~ • • • PART OF • • 542 • • • AUDIO : A15 BOARD • • BOARD (POlUO) AUOIO • • KEYBOARD GENERATOR : • • • • • • • 0 01 • • • 'I • o· • • POlUO • INPUTS : : • • • • • • • • • • • • • DIGITAL · --------_ .. __ . • --.t • 0 TO

OAC • ANAlOG • • • CONVERTER • • • 1 ___ -._---_ .... __ ... _ ... _._---_ .. _ .... _----------_ .............

C4PMF SKELETON BLOCK 2

VID EO MONITOR

AC

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C4P SPECIAL SERVICING INSTRUCTIONS

For troubleshooting, the 502 and 540 boards can be interchanged for servicing .

NOTE: Care must be taken so that connectors on boards do not short to chassis or nearby boards.

542 BOARD 582 BOARD 540 BOARD

C4P - BOARD I CHASSIS LAYOUT 3

C4PMF SPECIAL SERVICING INSTRUCTIONS

For troubleshooting, the 505, 527, and 540 board can be interchanged for servicing.

NOTE: Care must be taken so that connectors on boards do not short to chassis or nearby boards.

542 BOARD 582 BOARD 540 D A 13 BOARD A 15 BOARD 527 BOARD 505 DUAI1U

C4PMF - BOARD / CHASSIS LAYOUT 4

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• C4P

TROUBLESHOOTING GUIDE COLOR COORDINATED

See schematic for .the colors matching those in this guide for circuitry to be checked.

When a portion of a chip function is being referred to for checking, this is indicated by the partial coloring of chip .

PRELIMINARY SETUP

"SHIFT LOCK" key must be depressed before any troubleshooting is attempted. "BREAK" key must be depressed and then released. Confirm power supply output of 5V DC. These steps are necessary before computer will operate.

~ ~O CLOCK INPUT - 502 BOARD

Input of scope to U12, Pin 8. Output should be similar to WAVEFORM 35. This confirms operation of part of U12. The I/Jo clock is developed on the 540 Board and feeds to U12 Pin 9, on the 502 Board. If WAVEFORM 33 is missing at U12 Pin 9, it will be necessary to troubleshoot CPO clock source on the 540 Board.

/!! P2 CLOCK (OSC.) - 502 BOARD

Connect scope to U4, Pin 39. Waveform should be similar to WAVEFORM 34. This will check the • operation of the clock section of U4.

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HH VIDEO SIGNALS - 540 BOARD

VIDEO OSCILLATOR CHECK: Connect scope to U3A, Pin 6. Waveform should be similar to WAVEFORM 14. To check operation of clock divider, connect scope to U3B, Pin 12 and Pin 9. Waveform should be similar to WAVEFORM 13 and 15 respectively.

VIDEO COUNTERS (U5D, U5B, U5F, U5H) CHECK: Timing and phase relationship of U5D, U5B, U5F, U5H can be confirmed by use of a dual trace scope. For U5D use horizontal time base of .5J.1Sec. See Figure 1 for scope connections to U5D. For U5B use horizontal time base of 10J.lSec. See Figure 1 for scope connections to U5B. For U5F use horizontal time base of .2mSec. It may be necessary to use a logic probe to see pulse at Pin 15. See Figure 1 for scope connections to U5F. For U5H use horizontal time base of 2mSec. See Figure 1 for scope connections to U5H.

Pin 14

Pin 13

Pin 12

Pin 11

Pin 15

Figure 1

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CL CLOCK CHECK: Connect scope to U3C, Pin 4. Output should be similar to WAVEFORM 14.

END BLANK CHECK: Connect scope to U3C, Pin 7. Output should be similar to WAVEFORM 17 .

VIDEO ADDRESS DECODING CHECK: Check outputs of U5C, U5G, and U5E. See schematic for scope connections. Outputs should be similar to WAVEFORMS 7, 8, 9, 17,22, 23, 24, 25, 28, 29, and 30. Check outputs of U5J and U5K. See schematic for scope connections. Outputs should be similar to WAVEFORMS 23, 24, 25, 28, 29, and 30. Timing and phase relationship of U5K and U51 can be confirmed by use of a dual trace scope. Set scope horizontal time base to 2mSec. See Figure 2 for scope connections and relationship of waveforms. This confirms operation of U5K, U51, and associated circuitry.

USK, Pin 12

U5K, Pin 4

US I, Pin 4

US!, Pin 7

US!, Pin 9

USI, Pin 12

Figure 2

SYNC PULSE GENERATION - 540 BOARD

For horizontal sync, connect scope to Pin 12 of U4B. Output should be similar to WAVEFORM 26 and the negative pulse should be approximately 4.7!-,Sec wide.

For vertical sync connect scope to Pin 12 of U4A. Output should be similar to WAVEFORM 27 and the negative pulse should be approximately 300!-,Sec wide.

~ VIDEO MEMORY AND VIDEO DEVELOPMENT - 540 BOARD

The four memory chips U2C, U2D, U2E, and U2F are the B & W memory. U2C and U2F comprise memory for the top half of the monitor display, while U2D and U2E comprise memory for the bottom half of the monitor. The video information is fed thru U3F to ROM (U3E) to generate the dot pattern to be displayed. U3D then shifts this information serially to the Video Monitor (J21). See Figure 3 to compare timing of memory switch signal to video signal. Set horizontal time base on scope to 2mSec. This confirms operation of U2C, U2D, U2E, U2F, U3D, part of U3E, U3F, and aSSOCiated circuitry.

U2C, Pin 8

Video Jack

U2D, Pin 8

Figure 3

• COLOR SIGNALS - 540 BOARD

To check X2 crystal oscillator (3.579545MHz), connect scope to U2A Pin 8. Output should be similar to WAVEFORM 11 . This confirms operation of part of U2A, X2, and associated circuitry.

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NOTE: U1 B is used to generate the phase required to obtain the specific colors given in the operators manual. U1 B must be replaced by original type to obtain proper color.

• To check for color from memory, connect a logic probe to U1 D, Pin 1. Enter machine language mode by depressing "BREAK", "M\ ".", "0", "E\ "0\ "0". DEOO will appear in the left four positions of the six located in the top left hand of the monitor. Depress "/" and "01 ". The logic probe should indicate a low level. Enter "05", the logic probe should indicate a high level. Move logic probe to U1D, Pin 2. The logic probe should indicate a train of pulses. Enter "01", the logic probe should now in· dicate a low level. This confirms operati'on of part of U1 F, U1G, U1 E, U1 D, and associated circuitry. Move logic probe to U1A, Pin 5. The logic probe should indicate a low level. Enter "05" . The logic probe should indicate a train of pulses. This checks operation of part of U1A, U1D, and associated circuitry.

•

To check timing pulses that select background color, connect scope to U4A, Pin 4. Output should be similar to WAVEFORM 3 and the negative pulse should be approximately 8J<Sec wide .

• "BYTES FREE" MEMORY CHECK - 502 BOARD

The ram circuitry check is built into the computer, as long as most all other circuitry is working. To check ram circuitry, follow this procedure:

1. Press "BREAK". 2. Press "C".

Computer will ask "memory size". Ignore the question, press "RETURN". Computer will ask "terminal width". Ignore the question, press "RETURN". Computer will display XXXX BYTES free, etc. If the "BYTES FREE" number does not represent the total number of your system, this will indicate what memory or associated circuitry has failed . The following chart indicates the bytes free count and the chips inVOlved . To find the defective memory rams or associated circuitry, observe bytes free indication on screen.

Go to the chart and find the bytes free column to locate associated chips.

EXAMPLE 1: The computer is equipped with MEMORY totaling 7423 BYTES FREE. The monitor screen indicates 5375 bytes free. Go to Chart 5375. Adjacent chips U35 and U44 are operating properly. This would indicate, then, that U34 and/or U43 and/or associated circuitry is malfunctioning.

EXAMPLE 2: The computer is equipped with MEMORY totaling 7423 BYTES FREE. The monitor screen indicates 4362 bytes free. Go to chart. 4362 falls between 4351 and 5375. This indicates U35 and/or U44 and/or associated circuitry is malfunctioning.

NOTE: Chips adjacent to the next higher number of bytes free displayed on the monitor are the most likely defective device(s).

If above steps do not solVf;l failure(s), continue.

:.: CHIP SELECT LINES CS(O thru 7) - 502 BOARD

To check chip select lines, bring the computer into machine language mode by depressing "BREAK", then "M" . A six-character, alpha-numeric display will appear on the monitor. Use the first four characters for the address code as shown charted below. Connect logic probe to chip select line. Press"." then enter address selected from chart . If operating properly a pulse should be indicated on logic probe when the last character is entered.

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RAMS

BYTES FREE CHIPS OR ASSOCIATED MACHINE ADDRESS CIRCUITRY NUMBERS

255 U40 U49 0000-03FF 1279 U39 U48 0400-07FF 2303 U38 U47 0800-0BFF 3327 U37 U46 OCOO-OFFF

........ . . . . .... . . . . . .. . . _ . . .. ....... . .. . . . •. .. .. ... . .. . . . .. . . . . .. . .. ... . 4K

4351 5375 6399 7423

U36 U45 U35 U44 U34 U43 U33 U42

1000-13FF 1400-17FF 1800-1BFF 1COO-1FFF

...... . .. . . .. ... . .. . ... . .. . . .. . .... . . .... . . ... .... ... . ... . . . . .. . . . .. . .. . . 8K

• AUDIO CASSETTE/TAPE SIGNAL CHECK - 502 BOARD

502 BOARD " " "

502 BOARD " " "

Clock signal needed to send data to cassette/tape should be similar to WAVEFORMS 36 and 37.

When storing a program going out to tape recorder, see WAVEFORMS 43, 44, and 45.

To confirm signal coming from cassette: While loading a program coming from the cassette, proper operation is indicated by WAVEFORMS 38, 39, 40, 41 , and 42. WAVEFORM 42 amplitude depends on volume control setting of cassette .

• MICROPROCESSOR CHIP (CPU) OPERATION - 502 BOARD

If "BREAK" key does not clear screen of random pattern, processor may not be working. Be sure key switch is fun ctioning.

To verify processor is working, a pulse indication taken by scope (set on 1/LSec. range) or logic probe at address lines (AO through A15) at U4 will verify. No signal on an address line will suggest a defect ive U4 or a problem on that address line.

a ROM MONITOR AND ROM BASIC CHIPS OPERATION CHECK - 502 BOARD

SYMPTOM: " BASIC " mode will not operate as "C" key is depressed and display does not change. "MACHINE" mode operates properly. This indicates a problem with ROM BASIC 1(U6), 2(U7) and/or 3(U8).

SYMPTOM: " BASIC " AND " MACHINE" modes not functioning. This indicates a problem with one or more of these chips and/or associated circuitry:

ROM MONITOR (U5), ROM BASIC 4 (U9), MICROPROCESSOR (CPU-U4), RAMS (U40 AND/OR U49)

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C4PMF TROUBLESHOOTING GUIDE

COLOR COOROINATEO

See schematic for the colors matching those in this guide for circuitry to be checked.

When a portion of a chip function is being referred to for checking, this is indicated by the partial coloring of chip.

PRELIMINARY SETUP

"SHIFT LOCK" key must be depressed before any troubleshooting is attempted. "BREAK" key must be depressed and then released. Confirm power supplies output of 5V DC. These steps are necessary before computer will operate.

~ CRYSTAL OSCILLATOR (X1) - 505 BOARD

Connect scope to U5C, Pin 8. Waveform should be similer to WAVEFORM 38. This confirms operation of X1 and associated circuitry.

02 CLOCK (OSC.) - 505 BOARD

Connect scope to U1B, Pin 39. Waveform should be similar to WAVEFORM 41 . This will check the operation of the clock section of U1 B. Check the outputs of U4D Pin 3 and 13. Waveform should be similar to WAVEFORM 42.

VIDEO SIGNALS - 540 BOARD

VIDEO OSCILLATOR CHECK: Connect scope to U3A, Pin 6. Waveform should be similar to WAVEFORM 14. To check operation of clock divider, connect scope to U3B, Pin 12 and Pin 9. Waveform should be similar to WAVEFORM 13 and 15 respectively.

VIDEO COUNTERS (U5D, U5B, U5F, U5H) CHECK: Timing and phase relationship of U5D, U5B, U5F, U5H can be confirmed by use of a dual trace scope. For U5D use horizontal time base of .5JlSec. See Figure 1 for scope connections to U5D. For U5B use horizontal time base of 10JlSec. See Figure 1 for scope connections to U5B. For U5F use horizontal time base of .2mSec. It may be necessary to use a logic probe to see pulse at Pin 15. See Figure 1 for scope connections to U5F. For U5H use horizontal time base of 2mSec. See Figure 1 for scope connections to U5H.

Pin 14

Pin 13

Pin 12

Pin 11

Pin 15

Figure 1

9

CL CLOCK CHECK: Connect scope to U3C, Pin 4. Output should be sim ilar to WAVEFORM 14.

END BLANK CHECK: Connect scope to U3C, Pin 7. Output should be similar to WAVEFORM 17 .

VIDEO ADDRESS DECODING CHECK: Check outputs of U5C, U5G, and U5E. See schematic for scope connections. Outputs should be similar to WAVEFORMS 7, 8, 9, 17, 22, 23, 24, 25, 28, 29, and 30. Check outputs of U5J and U5K. See schematic for scope connections. Outputs should be similar to WAVEFORMS 23, 24, 25, 28, 29, and 30. Timing and phase relationship of U5K and U51 can be confirmed by use of a dual trace scope. Set scope horizontal time base to 2m Sec. See Figure 2 for scope connections and relationship of waveforms. This confirms operation of U5K, U51 , and associated circuitry.

U5K, Pin 12

U5K, Pin 4

U5!. Pin 4

U5!. Pin 7

U5!. Pin 9

U51, Pin 12

SYNC PULSE GENERATION - 540 BOARD

•

For horizontal sync, connect scope to Pin 12 of U4B. Output should be similar to WAVEFORM 26 and • the negative pulse should be approximately 4.7"Sec wide.

For vertical sync connect scope to Pin 12 of U4A. Output should be similar to WAVEFORM 27 and the negative pulse should be approximately 300"Sec wide.

~ VIDEO MEMORY AND VIDEO DEVELOPMENT - 540 BOARD

The four memory chips U2C, U2D, U2E, and U2F are the B & W memory. U2C and U2F comprise memory for the top half of the monitor display, while U2D and U2E comprise memory for the bottom half of the monitor. The video information is fed Ihru U3F to ROM (U3E) to generate the dot pattern to be displayed. U3D then shifts this information serially to the Video Monitor (J21). See Figure 3 10 compare timing of memory switch signal to video signal. Set horizontal time base on scope to 2mSec. This confirms operation of U2C, U2D, U2E, U2F, U3D, part of U3E, U3F, and associated circuitry.

U2C, Pin 8

Video Jock

U2D, Pin 8

Figure 3

• COLOR SIGNALS - 540 BOARO

To check X2 crystal oscillator (3.579545MHz), connect scope to U2A Pin 8. Output should be similar to WAVEFORM 11 . This confirms operation of part of U2A, X2, and associated circuitry.

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NOTE: U1 B is used to generate the phase required to obtain the specific colors given in the operators manual. U1 B must be replaced by original type to obtain proper color.

To check for color from memory, connect a logic probe to U1 D, Pin 1. Enter machine language mode by depressing "BREAK" , "M" , "." , "D", "E" , "0" , "0" . DEOO will appear in the left four positions of the six located in the top left hand of the monitor. Depress " /" and "01 " . The logic probe should indicate a low level. Enter "05", the logic probe should indicate a high level. Move logic probe to U1 D, Pin 2. The logic probe should indicate a train of pulses. Enter "01 " , the logic probe should now indicate a low level. This confirms operation of part of U1F, U1G, U1E, U1D, and associated circuitry. Move logic probe to U1A, Pin 5. The logic probe should indicate a low level. Enter "05 ". The logic probe should indicate a train of pulses. This checks operation of part of U1A, U1D, and associated circuitry.

To check timing pulses that select background color, connect scope to U4A, Pin 4. Output should be similar to WAVEFORM 3 and the negative pulse should be approximately 8f.1Sec wide.

:-: CHIP SELECT LINES CE (0 thru 23) - 527 BOARD

To check chip select lines, bring the computer into machine language mode by depressing "BREAK", then " M" . A si x·character alpha-numeric display will appear on the monitor. Use the first four characters for the address code as shown charted below. Connect logic probe to chip select line.

Press ". " then enter address selected from chart. If operating properly a pulse should be indicated on logic probe when the last character is entered.

Of )

"1rFF -

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RAMS

CHIPS OR ASSOCIATED CIRCUITRY

MACHINE ADDRESS NUMBERS

UA1 , UB1 0000·03FF UA2, UB2 0400-07FF UA3, UB3 0800-0BFF UA4, UB4 OCOO-OFFF

... .. ....•. ... • .. . .. .. ...... .. . .. . .. . ... .... ...... . .. . ......... . . . . .. . . .. 4K

UA5, UB5 UA6, UB6 UA7, UB7 UA8, UB8

1000·13FF 1400-17FF 1800·1BFF 1COO·1FFF

. . . .........•... . .................... .. . . . . ......... . . . ..... . .. . . ..... .. . 8K

UC1, UD1 UC2, UD2 UC3, UD3 UC4, UD4 II ·HY

29Q0-23FF 2400-27FF 2800·2BFF 2COO-2FFF

(l

('> 0 I\.:: \ I Q 0

~

.... ... .. ... .. .. .. . . . . . ... . .. .. .. .. .... .. .. . . .... . . .. . .. . . . . .. .. .. .. .... 12K

UC5, UD5 UC6, UD6 UC7, UD7 UC8, UD8

3000·33FF 3400·37FF 3800-3BFF

I j~ 0 3COO·3FFF Oo I I \ '<

.. ..•... . ....• . .. . .• .. . ..• ... .. • .. . . . . .. . .. .. . .. . .. . . . . . .. . .. . . . . . . . . .. . 16K

_ ., c. \

IS-' '1'; 'I

11

UE1, UF1 UE2, UF2 UE3, UF3 UE4, UF4

4000-43FF 4400-47FF 4800-4BFF

1"1 LIS" C. _~4FFF o r o n

. . ... ...•...... ...•... . .. .. ..... . ........•.. . ........ . .. . .. . ............ 20K

UE5, UF5 UE6, UF6 UE7, UF7 UE8, UF8

5000-53FF 5400-57FF 5800-5BFF

"21,')'71-- 5COO-5FFF ----. .......... . . . . . . .•.. . . .. .. . ....... . ................ . ................... 24K

• MINIFLOPPY DATA-PATH CHECK - 505 BOARD

Connect scope to U5G, Pin 7 to check count down circuit operation. Output should be similar to WAVEFORM 57.

Connect scope to U3C Pin 4. Output should be similar to WAVEFORM 47 and the negative pulse should be approximately 400nSec. Connect scope to U3C Pin 5. Output should be similar to WAVEFORM 46 and the positive pulse should be approximately 400nSec. This checks the timing pulse needed to send the write data to the minifloppy.

•

Connect scope to J2 Pin 9. Output should be similar to WAVEFORM 51. When data is being sent to • the minifloppy, it will appear as noise on the waveform. This confirms operation of parts of U1C, U4B, U5D, and U2B.

To check data input, connect scope to U4C Pin 12. Insert minifloppy disk. Output should appear similar to WAVEFORM 45.

To check clock input, connect scope to U4C Pin 13. Insert minifloppy disk. Output should appear similar to WAVEFORM 44.

MINIFLOPPY CONTROL SIGNAL CHECK - 505 BOARD

Connect scope to J2, Pin 17. Output should be similar to WAVEFORM 58.

Connect logic probe to J2, Pin 19. With Disk removed the logic probe will indicate a logic 1. While Disk is being inserted into Minifloppy, the logic probe will indicate a logic O. After the Disk is inserted a logic 0 will remain if the Write Protect notch is covered; a logic 1 will be displayed if the notch is not covered.

Depress " BREAK", check for a pulse on a logic probe connected to J2, Pins 7, 8, and 21, just after depressing "D".

Depress " BREAK", check for pulses on a logic probe connected to J2, Pins 2 and 5. Check for a pulse on J2, Pins 3 and 18 after "BREAK" is depressed. Then check for two pulses after "D" is depressed.

Connect logic probe to J2, Pin 1. Depress "BREAK". Check for several pulses after" D" is depressed. • Pin 1 should then become HI-Z. Connect logic probe to J2, Pin 6. Depress "BREAK" and confirm a logic 1. Depress "D" check for several pulses then a logic O. This checks the operation of part of U1A and associated circuitry.

12

•

•

•

• MICROPROCESSOR CHIP (CPU) OPERATION - 505 BOARD

If "BREAK" key does not clear screen of random pattern, processor may not be working. Be sure key switch is functioning.

To verify processor is working, a pulse indication taken by scope (set on 1/lSec range) or logic probe at address lines (AD thru A 15) at U1 B will verify. No signal on an address line will suggest a defective U1 B or a problem on that address line.

Ie ROM MONITOR OPERATION CHECK - 505 BOARD

SYMPTOM: "DISK" mode will not operate as "D" key is depressed. The "MACHINE" mode operates properly. This indicates a problem with one or more of these chips and/or associated circuitry;

ROM MONITOR (U2D), MICROPROCESSOR (CPU· U1B), RAMS (UA1 AND/OR UB1)

0 10 I 00 00(1000r()

13

C4P/C4PMF- A15 BOARD PARTS LIST AND DESCRIPTION (When orderong pgrh, dole Model, Pori Number, ond DeHrrpr;onJ

SEMICONDUCTORS (Select replacement transistor for best results) • REPLACEMENT DATA ITEM TYPE MfGR. GENERAL ZENITH No, N~ PART No. ELECTRIC

MAllORY RAYTHEON RCA SYLVANIA THOROARSON WORKMAN

PART No. PART No. PART No. PART No. PART No. PART No. PART No. PART No.

01-04 lN914 Q-1H914 GE-514 PTC214 REN 177 SK3100/519 [CG519 T14519 WEP9Z5/519 103-131

ELECTROLYTIC CAPACITORS REPLACEMENT DATA

ITEM RATING MFGR . CORNEll· MALLORY SPRAGUE PART No.

No. PART No. OU81L1ER PART No. I GENERAL PART No. G-lINE LINE

CI 47 l6' (-506 NLWSO-16 TTl5X5OA QE1-JSl I TVA-1l50

CAPACITORS REPLACEMENT DATA

ITEM RATING MFGR . CORNEll· SPRAGUE PART No. No, MALLORY PART No. DU81l1ER

PART No. PART No. Q·L1HE I GENERAL LINE

C2 , 1 10' C8-10410 49. I'IAG1201 QCl-ZZJ l HY-360

RESISTORS (Power ond Specia l) REPLACEMENT DATA REPLACEMENT DATA

ITEM RATING WORKMAN ITEM RATING MFGR. WORKMAN

No, MFGR. No, PART No. PART No. PART No. PART No.

R1 220 S% 1/4'11 Rl-221 22-1080 R5 220 51 1/4'11 Rl - 221 22-1080 Flameproof Carbon Flameproof Carbon

Film Film R2 4700 SI 1/4W RI-472 22-1112 R6 4700 5i 1/4'11 Rl-472 22-1112

Fl ameproof Carbon Flameproof Carbon Film Film

Rl 220 51 1/4W RI-221 22-1080 R7 220 5" 1/4W RI -221 22-1080 Flameproof Carbon Flameproof Carbon

FUm Film .. 4700 S" 1/4W Rl-472 22-1112 ,. 4700 5% 1/4'11 Rl -472 22-1112 Fl ameproof Carbon Flameproof Carbon

FUm Fflm •

" 1000 51 1/411 RI-I02 22-1096 Flameproof Carbon

Film

MISCELLANEOUS ITEM

PART NAME PART No. NOTES No,

J1 Socket SC-40Fl 40 Pin (Interconnect to 502 Board) J2 Socket SC·16FW 16 Pin tSI ItO BUS) JJ Socket SC ·16FWW 16 Pin Port -A") J4 Socket SC-16fWW 16 Pin Port -6") J' Socket SC-9FA 9 Pin (Joystick "A"! J' Socket SC- 9FA 9 Pin (Joystick "8" J7 Socket SC-9FA 9 Pin (Key Pad "A") J8 Socket SC·2SFCA 25 Pin (Printer) J. Socket SC-25FCA 25 Pin (Modem) J1. Socket SC·9FA 9 Pin (Key Pad ·B~)

P.C. Board PC-AI SA C4-P Connector

C4P- 502 BOARD PARTS LIST AND DESCRIPTION (When ordering pattt, tlale Madel, ParI Number, and DucflptionJ

SEMICONDUCTORS (Select replacement Iransistor for best results) REPLACEMENT DATA

ITEM TYPE MFGR. GENERAL No, No, PART No. ElECTRIC MALLORY RAYTHEON RCA SYLVANIA THORDARSON WORKMAN ZENITH


01-02 IH914 Q-IH914 !L-514 PTC214 REN 177 SK3100/519 ECGSI9 TH519 IIEP925/519 103-131 03-OS U1 F-7476PC IC-7476 GE· 7476 SK7476 ECG7476 1117476 IIEP7476!7476 U2 CA3130E IC-3130 UJ 1'1;685(11 IC-6850 1J4 6502 IC-6502

us C3808S lC-7157 • SYttlCflVl.0 LO C38121 It-BAS JC 1 U7 C38122 It-BASIC 2 lIS C38123 IC-8ASIC 3

"' C38124 IC-BASIC 4

14

C4P- 502 BOARD PARTS LIST AND DESCRIPTION (CONTINUED) (When ordering porls, IIafe Model, Port Number, and DflJcriplionJ

• SEMICONDUCTORS (Selec. replacemen. 'ran.i,'or for be •• re.ulls) (cont) REPLACEMENT DATA

ITEM TYPE MFGR. GENERAL ZENITH No. No. PART No. EtEaRle MALLORY RAYTHEON RCA SYlVANIA THORCARSON WORKMAN

PART No. PART No. PART No. PART No. PART No. PART No. PART No. PART No .

UIO NBT26AN le-8ll6 U12 F-5404DH

7404 IC-7404 GE-74Q4 SK7404 [CG7404 TM7404 221-Z9016 U13 UA555TC IC-555 GEIC -269 PTC1S55 SK3564/ 955M ECG955H TH955M WEP2119/ 95511 221-19042 Ul4 74148N IC- 74148

U16 74lS139N l C- 74l S139 U17 F-S404OM

7404 IC-1404 GE-7404 510404 ECG7404 TM7404 UIS F-743OPC IC-7430 5K7430 ECG7430 TI17430 22 1-19076

U19 N8TZ6AH IC-aTl6 020 7<0' IC- 7404 GE-7404 SK7404 [CG7404 1H7404 221-Z9076 U22 SN74123N It-74123 !iE-l4123 REN 74123 5104123 ECG74123 TM74123 U23 F-7474PC IC- 7474 GE-7474 221 - Z9006 R[N 7474 SI(7474 [CG7474 H!7474 W[P7474/7474 U24 F-7417Pt: IC-7417 ECG7417 TH1417 U2' F-7417Pt: IC- 7417 ECG7411 Tl'!7417 U2. SN74lS138N IC-74LS138 SI(74LSl18 ECG74LSl38 TM74LS138 U27 741 ON IC-7410 GE-7410 SI0410 ECG74 10 TH]410 U28 F-54041J4

7404 IC- 7404 GE-7404 S10404 ECG7404 TH7404 221-Z9076 U2' SN7420N IC-7420 GE-7420 SI(7420 ECG7420 TH7420 U30 7414 IC-7414 221-Z9017 SK7414 ECG7414 TM7414 UJ! 7404 IC .. 7404 GE-7404 S1::7404 ECG7404 TM7404 U32 F-7417PC IC-7417 ECG7417 TM7417 221-Z9076

UJJ- 2114L-J IC-2l14-LJ 040

IC-L2114-SS0 041 F-7417PC IC-7417 ECG7417 1/147417 042- 2114L·3 IC-2114-LJ U4'

IC-L2114-SS0 QI -Q6

• ELECTROLYTIC CAPACITORS REPLACEMENT DATA

ITEM MFGR. CORNElL- MAllORY SPRAGUE PART No. RATING No.

PART No. DU81UER PART No. I GENERAL PART No. Q-lINE LINE

OJ' ., 16' C- 506 HLW50- 16 TTlSXSOA OEI-3S1 I TVA·lISO


ITEM RAT1NG MFGR. CORNElL- SPRAGUE PART No. No. PART No. DU8111ER MALLORY

PART No. PART No. Q-lINE GENERAL UNE

Cl 6S 12SV SI C-680 COISED6S0J03 SX468 QWl -23 MIIA-680 C2 . 01 100Y l OS C-I 03 WHFlSI [WFIAllO QFl -91 IP8-SI0 OJ . 01 100'1 l OS C-130 WHflSI [WFl All 0 QF1-91 IPS-SID C4 82 SI COl S[[J32QJ03 SX4S2 QW1 -2S MIIA-820 C5 15011('151 C-lSI GP31S lOTS-TIS CO .01 100'1 lOS C- IO) WHFlSI EWFlAll0 QFI -91 IP8-SI0 C7 . 022 100'1 l OS C-223 DPI'!S2S22 EWF1AI22 QFI-127 IPS-S22 C8 82 5% COl SEOO2OJO) SX482 QWI-2S I4IA-820 C9 .1 l OS C-I04 DPHS2PI EWFlA010 QFI -21 S IPB-PIO ClO .001 100'1 lOS ( -1 02 OPHS6DI EWFIA2 10 QFI-! IP8-010 C20 .1 I DV (8-1041 0 HAGI201 QCl -223 fiY -360

'" . 1 10'1 (8-10410 HAGI201 QCI -223 flY - 360 C22 . 1 10'1 CS-I041 0 HAGI201 OCI -223 HY-360 C23 . 1 10'1 C8-10410 HAGl201 QCI - 223 HY-360 02. .1 10'1 C8-1041 0 HAG1201 QCI -223 HY-360 C2' .1 lOY C8-1041 0 HAG1201 QCI -U3 fiY - 360 C2. .1 lOY CB-I0410 HAGI201 QCI - 223 HY-360 "8 . 1 lOY CB-I04I 0 HAGI201 QCI - 223 HY-360

'" .1 l OY CB-I 04I0 HAGI201 QCI-223 HY-360 "0 . 1 l OY C8- 10410 HA GI201 OCl - 223 fi V- 360 CJ! .1 lOY CS-I04I0 HAGl201 QCI -223 fiY-360 "2 . 1 l OY C8- 10410 MAGI 201 QCI - 223 fiV - 360 "3 . 1 l OY C8-10410 HAGI 201 QCI - 223 HY-360 C34 .1 l OY ClI -I 0410 MAGI 201 QC I-223 MY- 360 C35 • I 10V CB- 10410 MAGI 201 QCI-223 fiY - 360 C36 . 1 10'1 C8-1041 0 MAGI 201 QCl-223 HV-360 <37 .1 l OV C8 - 10410 MAGI 201 QCI - 223 fiY - 360 C38 . 1 lOY C8- 10410 KAGt201 QCI -223 HY-360 • C39 .1 10'1 C8-10410 MAG1201 QCI-""3 fiY- 360 C40 . 1 10'1 C8-1 0410 MAGI 201 QCI -223 fiY-160 0\1 .1 10'1 C8-10410 MAGI 201 QC l-U3 fiY -360 C42 • I 10V C8-1 0410 KtlGt201 QCI -223 HY-360 C43 .1 10'1 CS- 10410 HAGI201 QCI -223 fiY · 360 C4' .1 10'1 CB-I 04I0 HAG1201 QCI -22l HY-360 C4' . 1 I OV CB-I 0410 KtlGI 201 QCI · 223 HY -360

IS

C4P- 502 BOARD PARTS LIST AND DESCRIPTION (CONTINUED) (When ordering porh, dofe Model, Por' Nvmber, and DeJerlphon.)

CONTROLS (All wattages 1/2 watt or Ie .. unle .. listed) • , , ITEM REPLACEMENT DAT.IIt

No. FUNCTION RESISTANCE MFGR. MALLORY TRW PART No. PART No. PART No.

011 Frequency 10K RP·103 RVA0911Vl03 X201Rl038 013 Duty Cycle 10K RP·103 RVA0911 Vl 03 X201Rl038 017 TX Clock '000 RP·502 RVA0911YS02 X260R5D2B R75 Duration (Tape Pulse) 1 IlK RP-1Ol RVA0911 Vl03 X260Rl03B

RESISTORS (Power ond Speciol) REPLACEMENT DATA REPLACEMENT DATA

ITEM RATING WORKMAN ITEM RATING WORKMAN No. MFGR. No. MFGR.

PART No. PART No. PART No. PART No.

R] 1000 511/410 Rl-102 22-1096 'JB 470 SI 1/4W RI-471 Z2- 1088 Flameproof Ca rbon Flameproof Carbon

FiI .. Fllm

" lC* 51 1/.w RI -1 03 22- 1120 '39 470 51 1/4W RI-471 22-1088 Fl ameproof Carbon Flameproof Carbon

FUm Film

" lOOK. 51 1/4W R1-104 22-1144 040 410 51 1/4W R1 -471 22- 1088 Flameproof Carbon Flameproof Carbon

Fih'! Fil ... 04 10K 51 1/ 4W Rl-103 22 -1120 041 470 51 1/4W RI-471 22-1088

Flameproof Carbon FI ameproof Ca rbon Fl1m Fllm

05 4700 ~S 1/41.' RI-412 22-1112 Carbon Film

'42 470 51 1/4W RI -471 22- 1088 .. 4700 51 1/4W RI-412 22-111 2 Flail!leproof Carbon Carbon Film

" 4700 51 1/4W RI·412 22-111 2 Film '43 470 5S 1/41.' RI-471 22-1088

Carbon Fflm Flameproof Carbon R8 47005S 1/41.' R1-472 22-1112 film Carbon film '44 470 ~I 1/4W RI-471 22-1088

" 4700 51 1/4W RI-472 22-1112 Flameproof Carbon Carbon Film Fl1m RlO 10K 5S 1/41.' Rl-I03 22-1120 04' 470 51 1/4'" RI-471 22-1088 F1 ameproof Carbon Flameproof Carbon Film

Rl2 10K 51 1/4 I.' RI-l03 22-1120 f1l11! 04. 220 51 1/41.' RI-221 22-1080 Flameproof Carbon flameproof Carbon FilII! Film

'l4 1000 51 1/41.' Rl-102 22-1096 '47 390 5% 1/41.' Rl-391 22-1006

flameproof Carbon Flameproof Carbon FilII! film Rl5 4700 51 114M RJ-472 22-1112 R" 220 51 1/41.' RI-221 22- 1000

Carbon Ffl .. f1aveproof Carbon

'16 1000 51 1/4'" RI-10l 22-1096 Fll~

Flameproof Carbon '49 390 SI 1/4W RI-391 22-1086

film Flameproof carbOn

'18 4700 51 114M RI -472 22-1112 Film Carbon FIl ... 050 220 lOS Ir~W RI-221 22-1000

'19 4700 SI 1/4W Rl-472 22-1112 Fl ameproof carbOn Carbon Film Film

"0 4700 5% 1/41.' RI-412 22-1112 051 390 5% 1/41.' Rl-391 22-1086 CarbOn Fll~ Flameproof Carbon

'" 4700 5% 1/41.' RI-412 22-1112 Fl1m Carbon Film R52 10K 51 1/4W RI-I03 22-1120

"2 4700 51 1/4W RI-472 22-1112 Flameproof CarbOn carbOn Film Film

• "3 4700 5% 1/4W RI-472 22-1ll2 R5J 410 51 1/4W RI-471 22- 1088

Carbon Film Flameproof CarbOn ". 4700 51 1/4M RI-472 22-1112 Carbon Fl1m Film

05. 10K 51 1/41.' Rl-I03 22- 1120

'" 4700 51 1/411 Rl -472 22-1112 Flameproof Carbon Carbon Film ". 10K 51 1/41.' RI - I03 22-1120 Fl1m 05' 10K 51 1/4W Rl-103 22-1120 FI ameproof Ca rbon Flameproof Carbon F1\1I!

"7 100 51 1/4W Rl-l01 22-1072 Film

Flal!leproof Carbon OS. 470 5% 1/4W RI-411 22-1 008

Film Flameproof Carbon

"8 470 51 1/4W RI-471 22-1008 Fl1m

Flalftt!proof Carbon R57 10K 51 1/41.' Rl-103 22-1120 , FilII Flameproof Carbon

'29 470 51 1/ 41.' RI-471 22-1088 Fl1m

Flameproof Carbon 058 10K 51 1/41.' Rl - l03 22-1120

fl1m Flameproof Carbon

"0 470 51 1/4W RI-471 22- 1088 film

flameproof Carbon 059 470 5% 1/4W RI-471 22-1088

Film flameproof Carbon film

'" 470 51 1/4W RI -471 22-1088 "0 10K 51'; 1/4W RI-I03 22- 1120 Flameproof Carbon Flameproof Carbon

film Fl1m

"2 470 ~S 1/411' RI-471 22-1088 '" 10K 51 1/4W Rl-103 22-1120 Flameproof Carbon Flameproof Carbon

Fl1m Fflm RJJ 470 51 1/411' RI-471 22-1088 "2 4700 51 1/41.' RI -412 22-1112

Flameproof Carbon Flameproof Carbon Fllm Film ". 470 SI 114M Rl -471 22-1088 "3 10K 51 1/41.' RI-l03 22-1120

Fla.rneproof Carbon Flameproof Carbon Film FUll!

RJ5 470 SI 1/41.' RI - 471 22-1088 Flameproof Carbon ". 4700 51 1/4'" RI-472 22-1112

Film Ca rbon Film ". 470 5S 1/4W RI-471 22-1088

'" 10K 51 1/4W Rl-103 22-1120 Fl ameproof Ca rbon Flameproof Carbon

film Film "7 470 51 1/41.' Rl-471 22- 1088 ". 4700 51 1/41.' RI -472 22-1112 Flameproof Carbon Carbon Film

fOm

• 16

C4P- 502 BOARD PARTS LIST AND DESCRIPTION (CONTINUED) (Wh~'l o.-deru'Q parti, dote Model. PorI Numher, and Ducnpl,onJ

• RESISTORS (Power ond Speciol) (cont)

REPLACEMENT OAT A REPLACEMENT DATA ITEM RATING ITEM RATING MFGR. WORKMAN No. MFGR. WORKMAN No.


RO' 470 5% 1/ 4W RI-471 22-1(118 FUll Flameproof Carbon R72 390 5% 1/4W RI-391 22-1086

Film Flameproof Carbon '68 390 5% T/4W Rl-J91 22-1086 Film

Flameproof Carbon R73 220 5% 1/4W RI-221 22-1000 FIlm Flameproof Carbon

'69 220 SI 1/4W 11:1-221 22-1080 Film Flameproof Carbon R7' 1000 5% 1/4W RI-l02 ZZ-1096

Fitm Flameproof Carbon R70 390 5% 1/4W RI - 391 22-1086 Fllm

Flameproof Carbon '76 1000 51: 1/4W Rl -1 02 22-1096 Film F1 ameproof Ce rbon

'71 220 51 1/ 4W Rl-121 22-1 teO Film Flameproof Carbon

MISCELLANEOUS ITEM PART NAME PART No. NOTES No.

J1 Socket SC- 12FM 12 Pin (4 used) J2 Socket SC- 12FM 12 Pin

Socket SC-16FI 16 Pin IC Socket (3 used) Socket SC- I8FI 18 Pin IC Socket ~16 used) Socket SC-24Ft 24 Pin IC Socket 6 used) Socket SC-40FI 40 Pin IC SOcket P,C. Boartl PC-50Z CPU Board

• C4PMF- 505 BOARD PARTS LIST AND DESCRIPTION (When ordering parh, dote Mode', Port Number, and Descroption.}

SEMICONDUCTORS (Select replacement transistor for best results) REPLACEMENT DATA

ITEM TYPE MFGR. GENERAL ZENITH No. No. PART No. ELEORIC MALLORY RAYTHEON 'CA SYLVANIA THOROARSON WORKMAN


D1 1H914 Q-1N914 GE-~14 PTCZ14 REH 117 S10100/519 ECG519 TM519 WEP92~/519 103-131 03-04 IN9 14 Q-1H914 GE- 514 PTC2l4 REI( 177 SI0100/519 ECG519 TH519 WEpg2~/519 103-131 UlA S6821P IC-M82l U18 6502A IC-6502A U1C-UID S68~0 IC-68850

UlE F- 74l57PC SK74157 74lS157PC IC-74lS157 SI(74LS157 ECG74lS157 lM74lS157

UlF F-7404PC IC-7404 GE-7404 SK7404 ECG7404 TM7404 221 -Z9076 UlG MCl489/ IC-1489

SN75189N UlI N8l26AN IC-8l26

UZA N8T95N IC-8T95 U2B F-7417PC IC-7417 ECG7411 T147417 U1C 74148N IC-74148 UZO C3808~ IC-SVNt()N

SYNKlNV1 . U2E H8T26AH IC-8T26

UlA- U38 SH7417H lC- 1411 ECG7411 l 141417 UJ< SH7412lN IC-14123 GE-74123 RfN 14123 SK74123 [CG74123 TH74123 221 - Z9086 U30 HCBT95P IC- BT95 UlE SN7410J IC-1410 GE-741 0 SK7410 ECG7410 TH7410 UJF S6821P IC-68821

UJO N8T26AN IC-8l26 U4A SH7417N IC-7411 [CG741 1 TH7417 U4B OH1404/\ IC-1404 GE-7404 SK7404 [CG7404 TH1404 221 -Z9076 U4C SN74123N lC-74123 GE- 74123 REN 14123 SKJ41Z3 fCG74123 T147 41 23 221 -Z9086 U4D r«:8T9SP IC-8T9~

• "'E F- 1404PC IC-1404 GE- 1404 SK7404 [CG7404 TH1404 221-Z9016 U4' 0117404/\ IC-7404 GE- 1404 SK74D4 [CG7404 TM1404 221-Z9016 U'H KBT26AN IC-8T26 USA OH7400H IC-7400 GE-1400 REN 7400 SI(74OO EC61400 TH7400 WEP1400/J400 221-Z9075 U58 147~ IC-1476N GE- 7476 SK7416 ECG7476 TH7476 WEP7476/1476

17

C4PMF- 505 BOARD PARTS LIST AND DESCRIPTION (CONTINUED) (When order'"g par'J, slolII Madel, Port Number, ond DeJcription.)

SEMICONDUCTORS (Select replacemenl Iransistor for best results) (cont) REPLACEMENT DATA • ITEM TYPE MFGR. GENERAL ZENITH

No. No. PART No. elECTRIC MAllORY RAYTHEON .CA SYLVANIA THOROARSON WORKMAN

PART No. PART No. PART Na. PART No. PART No. PART No. PART No. PART No.

usc-us 0"'4000 IC-7400N 6E-7400 REN 7400 SK7400 ECG7400 TH7400 WEP74QO/7400 221-19075

U5E-U5 F14lS39OP IC-14lS390 USG F74LS39OP IC·74lS390

f-7439Of'C IC-7439O USH-US I SH742!lt 1(-7420 6E- 7420 SK1420 [(67420 T"7420 221-Z9071

USJ SN74lS138 IC-74lS138 SK74lS138 [CG74LSl38 TH74lS138

US< OH7404N 1(-7404 6E-7404 51(.7404 [C67404 TH7404 221 - 19076

USl SN7410J 1(-7410 6E-7410 51(.7410 [C67410 TH7410

U6A F-74163f1C IC-74163 [(674163 TM74163

U6B-U6 7493/j IC-7493 REN 74931. 5K7493 ECG7493A TH7493A 221-Z9078

U6E F-5404DH 7404 lC- 7404 GE-7404 510404 ECG7404 TH7404 221-Z9076

U6F 5N7402N IC-1402 GE-1402 SK1402 ECG7402 TH7402 IIEP7402/7402

U6G SN74LSI38 IC-74LSl38 SK74LS! 38 ECG74LSI38 TH74LSI38 U6H SN74()(l1 lC-74oo GE- 7400 REH 7400 SK7400 ECG7400 TH7400 WEP1400/74oo 221-Z9075

U61 74300 IC-743O 510430 ECG7430 TH7430

Q1 2N5226 0-2N5226 GE-82 PTCI03 REt! 159 SI0466/159 ECG159 THI59 WEP716 I 21 -Z900:r-

Q2 2N5226 Q-2N5226 GE-82 PTC103 REH 159 SK3466/159 ECGI59 nnS9 WEP716 121 -Z9001*

.. Lead confi9uration may vary fror.! original.


ITEM MfGR. CORNELl· MALLORY SPRAGUE PART No. No. RATING DUBILIER

PART No. PART No. PART No. Q-lINE GENERAL UN'

ClO 47 1" C-506 NLWSO- 16 TI15X50A 0[1-351 TVA-I 150 Cll 41 16V C-506 NLWSO-16 n1SX5OA 0[1 - 351 TVA-1150

• CAPACITORS REPLACEMENT DATA

ITEM RATING MFGR. CORNELL- SPRAGUE PART No. No. PART No. DUBllIER MALLORY

PART No. PART No. Q-lINE GENERAL LINE

C1 .1 lOV C8-10410 /'!AG1201 QCI - 223 HY-360 C2 .1 lOV C8-10410 MAGI 201 QCI-223 HY-360 C7 .1 lOV C8-10410 MAGI 201 QCI - 223 HY-360

" . 1 10V C8-10410 /'!AG120t 0<:1-223 KY-360 C9 .1 10V C8-10410 MAGI 201 QCI-223 HY-360 C12 . 1 10V C8 -1 0410 MAGI 201 QCI-223 HY-360 C13 .1 lOY C8-10410 MAG120! OCI-223 HY-360 CIS .1 lOY C8-10410 HAGI201 QCI-223 HY-360

'" .1 10V CB-I04I0 HAGI201 0'1-223 HY-360 "8 .1 lOY CB-10410 HAGIZOI QCI-223 HY-360 C19 • I 10V CB-I0410 HAGIlOI QCI-Z23 HY-360 020 150 lKY 1M C-1 51 GP315 lOTS-TIS C21 .1 lOY C8-10410 HAGI201 OCI-223 HY-360 022 .1 tOY C8-10410 HAGI201 QCl - 223 HY-360 C2J .1 lOY (8-10410 HAGIZOI QCl-223 HY-360 C2' .1 10V C8-10410 MAG1201 QCI-223 HY-360 C2S ISO IKV l OS C-ISI GP315 IOT5-1-1-5 '

'" .001 laDY 1M C-102 DPMS6DI EWFIA210 OF1-1 IP8-010 C27 . 1 lOV C8-10410 MAGI 201 QCI-223 HY-360 C28 .1 lOY C8-1 {)110 MAGI 201 OCl-2Z3 HY-360 031 .1 lOY C8-I04I0 HAGI201 QCl-223 HY-360 032 .001 100Y lOS C-ISI DPMS6DI EWFlA210 OFl-I IP8-DID C33 .1 lOY CB-I04!O HAGI201 QCI-223 HY-360 CJ4 .1 lOY C8-1041D HAGI201 QCt - 2Z3 HY-360 C36 "l7 500Y lOS C-270 CN0427 10TCC-Q"l7 C37 .1 10V C8-10410 HAGI201 QCI-2'23 HY-J60 C38 .1 lOY C8-10410 HAGIZOI QCl-223 HY-360 C39 ,I 10V C8-10410 HAGt201 QCI-223 HY- 360 040 .1 10V C8-10410 HAGI201 QCl-Z23 HY-360 041 .1 10V C8-10410 HAGIZO! QCI-223 HY-36D 042 . 1 lOY CB-10410 HAG1201 QCI -223 HY-360

CONTROLS (All wattages 1/2 watt or less unless listed) , , ITEM

REPLACEMENT DATA

No. FUNCTION RESISTANCE MFGR. MALLORY TRW PART No. PART No. PART No. • 052 TX Deta 10< RP-103 RVA09IIVI03 X260RI03B

.56 TX Clock 10< RP-T03 RYA09IIVI03 X260Rl038 057 RX Clock 10< RP-103 RYA0911V103 X260Rl038 '58 RX Data 10K RP-I03 RVA0911VIOJ X260RI038

18

C4PMF- 505 BOARD PARTS LIST AND DESCRIPTION (CONTINUED) (When INd"'"9 porlJ, slat. Model. Part Number, ond De,cription.)

• RESISTORS (Power and Spe(ial) REPLACEMENT DATA REPLACEMENT DATA

ITEM RATING ITEM RATING No. MFGR. WORKMAN No. MFGR. WORKMAN

PART No. PART No. PART No. '''RT No. R1 470 5~ 1/4W 11:1-471 22-1088 '" 4700 51 1/ 4'.1 R1-412 22-1112

Flameproof Carbon F14111eproof Carbon Film F1111

02 470 51 1/4'.1 R1-471 22-1008 "0 4700 5% J/4W 11:1-472 22-1112 F1 ameproof Carbon Fhmeproof Carbon

F11m F11m

" 470 5:1: 1/4'.1 R1-471 22-1088 "I 4700 5% 1/4'.1 R1-472 22-1112 Flomeproof Carbon Flameproof Carbon

Film Film R4 470 5% T/4W R1-471 22-1008 "2 4700 51 J/4W RJ -472: 22-1112

Flameproof Carbon Flameproof Carbon F11m Fflm

RI 470 5% '/4'.1 Rl -471 22-1088 "3 390 5% 1/4'.1 R1-391 22-1086 Fl ameproof Carbon Flameproof Caroon

F11m F11m R6 470 51 1/4'.1 R1-471 22-1088

F1 ameproof Carbon ". 390 51 1/411 Rl-391 22-1066 Film Flameproof Ca rbon

R7 410 51 1/4W Rl-411 22-1008 FilII! Flameproof Carbon '" 220 51 1/411 Rl-221 22-1080

Fit .. FlUleproof Carbon R8 410 51 1/411 Rl-411 22-1088 FilII

Flameproof Carbon '36 220 51 1/4W Rl-221 22-1080 Film Flameproof Carbon

R9 470 51 1/411 Rl-471 22-1008 Film Flameproof Carbon '37 101<. 51 1/411 R1-103 22-1120

FilII Flameproof Carbon '10 470 51 1/ 4'11 R1-471 22-1<88 Film

Fhl1leproof Carbon "8 10K 51 1/4'11 RI-103 22-1120 Film Flameproof C .... rbon

'II 220 51 1/41/ RI-221 22-1080 Film Flameproof Carbon '39 1000 51 1/2'11 R2-102 22-2096

Film Carbon '40 1000 51 1/2'11 R2-102 22-2096

'12 220 51 1/411 Rl-221 22-1000 Carbon Flameproof Carbon "I 1000 51 1/2'11 R2-102 22-2096

Film Co""'o '13 220 51 1/411 Rl - 221 22-1080 '" 1000 51 1/2'11 R2-102 22-2096

Flameproof Carbon Carbon Film "3 10K 51 1/411 RI-103 22-1120

• 'I' 220 51 1/411 R1-221 22-1080 Flameproof Carbon Flameproof Carbon Film

Film '44 10k 51 1/411 Rl-103 22-1120

'I' 220 5% 1/411 Rl-221 22-1080 Flameproof Carbon Flameproof Carbon Film

Film '45 390 51 1/411 Rl-391 22-1086

'I' 220 5% 1/411 R1-221 22-1080 Flameproof Carbon Flameproof Carbon Film

Film '" 390 51 1/411 Rl-391 22-1086 RI7 220511/411 Rl-221 22-1080 Flameproof Carbon

Flameproof Carbon Film FilII '" 390 51 1/411 Rl-391 22-1086

'18 220 51 1/4W R1-221 22-1000 Flameproof Carbon Flameproof Carbon Film

Film '48 220 51 1/4'11 R1-221 22-1000

'I' 220 51 1/4'11 Rl-221 22-1080 Flameproof Carbon Flameproof Carbon FUll

Film '" 220 51 1/4'11 Rl-221 22-1080 ",0 390 51 1/411 Rl - 391 22-1086 Flameproof Carbon

Flameproof Carbon Fn . Film RIO 220 51 1/4'11 Rl-221 22-1000

021 3905% 1/410' Rl-391 22-1086 Fhmeproof Carbon Flameproof Carbon Film

Film Rli 1000 5% 1/4'11 R1-102 22-1096 R22 390 51 1/411 Rl-391 22-1086 Flameproof Carbon

Flameproof Carbon Fllm Ff1m Rl3 220 51 1/4'11 Rl-221 22-1060

023 390 5% 1/411 Rl-391 22-1086 Flameproof Carbon Fhmeproof Carbon Film

Film ". 4700 51 1/411 R1-412 22-1112

'24 390 5% 1/411 RI -391 22-1086 Flameproof Carbon Flameproof Carbon Film

F11m R55 390 5% 1/411 R1-391 22-1066 R25 3~0 5% l/4W R1-391 22-1086 Flameproof Carbon

Flameproof Carbon Film Film RI' 1000 5% 1/411 Rl-102 22-1096

"" 390 51 1/4W R1-391 22-1006 Flameproof Carbon Fhmeproof Carbon Film

Fllm "0 18K 5% 1/411 Rl-183 22-1126 R27 390 51 1/4'11 Rl - 391 22-1086 Flameproof Carbon

Flillneproof Carbon Fllm Fillrl "I 4700 5% 1/411 R1-472 22-1112

"8 39051 1/411 Rl-391 22-1066 Fhflleproof Carbon Flalllf!proof Carbon Film

Film

• 19

C4PMF- 505 BOARD PARTS LIST AND DESCRIPTION (CONTINUED) (When ordering part" dot. Modal, ParI Number, and OucriplionJ

RESISTORS (Power ond Speciol) (cont) REPLACEMENT DATA REPLACEMENT DATA • ITEM RATING WORKMAN

ITEM RATING MFGR. WORKMAN No. MFGR. No .


R62 4700 51: 1/4\1/ Rl · 472 22·1112 '79 470 SI 1/4\1/ Rl-471 22-1c& Flameproof carbon Flameproof Carbon

Fll. Film 'OJ 470 51 1/4\1/ Rl-471 22-1008 RS. 470 SI 1/4\1/ Rl-471 22-l(1B8

Flameproof Carbon Flameproof Carbon Film film

'64 470 51 1/4W Rl-471 22-1088 R81 410 51 1/4\1/ Rl-471 22-1088 F1 ameproof Carbon Flameproof Carbon

Film Fflln '65 4700 51 1/4W Rl-472 22-1112 RS2 470 5% 1/4lri Rl-411 22-1068

Flameproof Carbon Flameproof Carbon Film film

'66 4700 5% 1/4\1/ Rl-472 22-1112 RS3 470 5% 1/4W Rl -471 22- 1088 Flameproof Carbon Flameproof Carbon

Film Film R61 4700 51 1/4\1/ Rl -412 22-1112

Carbon Fl1l1l R8' 470 51 1/4W RI-471 22-1088

'68 470 51 1/4W RI-471 22-1088 flameproof Carbon flameproof Carbon F11,..

fllRl '65 470 51 1/4W RI-471 22-1088

'69 470 51 1/4W RI -471 22-1088 Fhmeproof Carbon F16111eproof Carbon mr.

Film RS. 470 51 1/4W RI-471 22-1088 R1. 470 51 1/4W RI-471 22-1088 Flameproof Carbon

Flameproof Carbon FlIm Fl1m '81 4700 51 1/4W RI-472 22-1112

R11 470 51 1/4W RI_471 22-1088 Flameproof Carbon Flameproof Carbon Film

F11m RS8 1000 5% 1/4W RI-l02 22-1096 R72 470 51 1/4W RI -471 22-1088 Flameproof Carbon

Flameproof Carbon Film Fl1m R8' 4700 5% 1/4W RI-472 22-1112

Flameproof Carbon Film

'13 470 51 1/4W RI-471 22-10:18 '90 4700 51: 1/4W Rl-472 22-1112 Flameproof Carbon Flameproof Carbon

Film Film '14 470 51 1/4W RI-471 22-10:18 R91 4700 5'1 1/4W Rl-472 22-1112

Flameproof Carbon Flameproof Carbon F11m Film

'15 470 5% 1/4W RI -471 22-1088 '9Z 4700 5'1 1/4W RI-472 22- 1112 Flameproof Carbon Flameproof carbon

FlIm film '16 470 51 1/4W Rl -471 22-1088 '93 470 51 1/4W RI-471 22-1088

flameproof Carbon Flameproof Carbon film film • '11 470 51 1/4W Rl-471 22-1088 '94 4700 51 1/4W RI -472 22-1112

Flameproof Carbon flameproof Carbon Fil., FilII!

'18 470 51 1/4W Rl-471 22-1088 R9' 4700 51 1/4W flallleproof Carbon RI-472 22-1112 Film carbon Ftlm


J1 Socket SC-1 2FM 12 Pin J2 PlU9 SC-121f4 12 Pin J3 Socket SC - 12FM 12 Pin J4 Socket SC-40Fl 40 Pin (Connector to A15 Board)

" Crysta l X-405 "Ii, Socket SC-12FH 12 Pin ~5 U5ed~ PlU9 SC-Wtl 12 Pin 2 used P.C.8oard PC-50S8P CPU with Floppy Interface

C4PMF- 527 BOARD PARTS LIST AND DESCRIPTION (When ordering porh. slate Model_ Port Nl,lmDer_ ond OeJcriptionJ

SEMICONDUCTORS (Select replacement transistor for best results) REPLACEMENT DATA

ITEM TYPE MFGR . GENERAL ZENITH No. No. PART No. ELECTRIC MALLORY RAYTHEON RCA SYlVANIA THOROAR50N WORKMAN


01 - 0Z lN914 Q-1N914 GE-514 PTC214 REN 177 SK31OO/519 ECG5 19 TH519 WEP9Z5/519 103-131 llAl - UA6 2114l-J l C-2114-13 VA'- N6T26AN IC-6T26 VAlO

U81 -U88 2114l- 3 lC-2114 -l3 UC1-UC8 2114l-3 lC-2114-l3

"" f-74S138PC 1C-745138 ECG74S138 TH74S138 UCIO SN7404N IC-7404 GE- 7404 50404 ECG74Q4 TM7404 221 -Z9076 • UCl1 DH742C1tl IC-7420 GE- 7420 SI(7420 ECG7420 TH7420 221 -Z9077 UOI - UIIl 2114l- 3 IC-211 4-l3 UD9 F-74S138PC IC-74S138 ECG74S138 TH74S138

20

C4PMF-527 BOARD PARTS LIST AND DESCRIPTION (CONTINUED) (When ordering porls, 110111 Model, Por' Numb.r, and Delcription.)

• SEMICONDUCTORS (Select replacement trans;stor for best results) (cont) REPLACEMENT DATA

•

ITEM TYPE MFGII . GENERAL No. No. PART No. ELECTRIC MAllORY RAYTHEON RCA SYlVANIA THoaOAIiSON WORKMAN ZENITH

PART No . PART No. PART No. PART No. PART No. PART No. PART No. PART No.

UD10 F·74L504PC lC-J4LS04 SK74LS04 ECG74L504 TH74LS04 UE1-UE8 2114L- l IC-2114-Ll UE9 F-74S1JIW IC-745138 ECG14S1J8 TH74S138 UEIO SN1410J IC-7410 GE-7410 SK7410 ECG741Q T"7410 UFt-UFB 2114l-l IC- 2114-ll UfO F-74S138P IC-745138 ECG74S138 TH745138


ITEM RATING MFGR. CORNELL· MALLORY SPRAGUE PART No.

No. PART No. DUBIUER PART No.

PART No. Q-lINE ! GENERAL LINE

OJO SO 25' '-506 WBRSO-25 TI2SXSM QE1 -J53 ! TVA-1206


ITEM RATING MFGR . CORNEll- SPRAGUE PART No. No. PART No. MALLORY DU81L1ER

PART No. PART No. Q·lINE GENERAL LINE

01 . 1 lOV C8-10410 MAG1201 QC l-223 HY-360

" .1 '" CB- I0410 MAG1Z01 QCl -223 HY-360

" . 1 '" C8-10410 HAG1201 QCl-223 HY- 360 C4 . 1 lOY CB-1 0410 HAG1201 QCl -223 HY-360 OS .1 l OY (8-10410 HAG1201 QCl-223 HY-360 co .1 lOY C8-10410 HAG1201 QCl -223 HY-360 • C7 . 1 lOY CB-1041 0 HAG1 201 QCl -223 HY-360 ca .1 lOY CB- 10410 HAG1201 QCl-223 HY-360

" .1 lOY CB-10410 HAG1201 QCl -2 23 HY -360 010 .1 10V CB- l0410 KAG1201 QCl - 223 HY-360 011 .1 l OV CB-10410 HAG1201 Q(1-223 HY-360 m . 1 lOY CB- l04l0 KAG1201 QCI-223 HY- 360 C1J .1 10V CB-l0410 HAG1201 Qtl -223 HY-360 C14 .1 lOY (8- 10410 HAG1201 Q(1-223 HY-360 C15 .1 lOV (8-10410 MAGI 201 QCl -223 HY- 360

'" .1 lOY 1:8-10410 MAG1201 QCl-223 HY- 360 C17 .1 lOY C8-10410 MAG1201 QCl-223 HY - 360

'" . 1 lOY C8-10410 HAG1201 QCl -223 HY-360 C19 .1 lOY CB-l 0410 MAG1201 QC1 - 223 HY- 360 "0 . 1 lOY C8-1 0410 MAGI 201 QCl-223 HY-360 021 . 1 lOY C8- 10410 HAG1201 QCl-223 HY- 360

'" . 1 lOY CB-104l0 HAGI20l QCl-223 HY- 360

'" .1 10V C8-1 0410 HAG1201 QCl -223 HY-360 ". .1 lOY CB-10410 HAG1201 QCl-223 HY-360 C25 .1 10V C8-1041 0 Ii'\G1201 QCl -223 HY-360

'" .1 10V C8-1041 0 HAG1201 QCl-223 HY-360 C27 .1 10V C8-10410 HAG120l QCl-223 HY-360

'" .1 l OY CB-HM1 0 HAG1201 QCl-223 HY-360

'" . 1 lOY C8-10410 HAG1201 QCI-223 HY-360

RESISTORS (Power and Special) REPLACEMENT DATA REPLACEMENT DATA

ITEM RATING MFGR. WORKMAN ITEM RATING MFGR. WORKMAN

No. No. PART No. PART No. PART No. PART No.

R1 4700 5S 1/4W Rl -472 22-1112 R3 4700 5% 1/4W Rl-472 22-111 2 Carbon Fl1m carbon Film

" 4100 5% 1/4W Rl-472 22- 1112 R4 41005S 1/4W Rl-412 22-1ll2 Carbon Fl1m carbon Film

MISCELLANEOUS ITEM

PART NAME PART No. NOTES No.

J1 Socket SC-12FH 12 Pin (4 Required) Socket SC- 16Ft 16 Pin IC Socket !6 used) Socket SC- 18FI 18 Pin Ie Socket 48 used) P .C. Board PC-527P (114-9 Kemory

21

C4P/C4PMF- 540 BOARD PARTS LIST AND DESCRIPTION (When «daring porls, dale Model, PorI Number, and Descrrp/ion.)

SEMICONDUCTORS (Select ,"placement tran,i,tor lor be,t re,ult,) • REPLACEMENT DATA ITEM TYPE MFGR. GENERAL MALLORY RAYTHEON RCA SYLVANIA THOIIOARSON WORKMAN ZENITH No. No. PART No. ELEalile PART No. PART No. PART No. PART No. PART No. PART No. PART No.

PART No.

01-06 lN914 Q-1N914 Gf-514 PTC2l. liEN 177 510100/519 ECGS19 THS19 WEP925/519 103-131 UIA DK74151AN le-741S1 5K14151 [(G74151 1"'74151 UlB 004l04N IC- 74l04(1) UlC SH7400N IC-7400 GE-14oo IIEtl 7400 SK740C1 [(G74oo 1H74oo IfEP7400/7400 2Z1-Z9075 UlO F-74175PC IC-74175 [CG74175 TK741 75

UlE llM7411SN lC-74175 [(G74175 TH14175 F-74175PC [C674175 1M141 75

U1 F-U1G 2114L-l lC-2114-lJ U1H N8Tl6N Ie-8126

1.'EP7400/7400 U2A SN74000 IC-74oo GE- 74oo REN 7400 51::7400 [CG74oo 1H7400 221-Z9075

U2B F-74lS86PC IC-741S86 5K74lS86 ECG74lS86 TM74lS86 U2C- U2F 2114l-3 1C-2114-l3 UZG-U2H NST26N IC-ST26 UJA SN74()(l( IC-7400 GE- 74oo REH 7400 510400 E(G74oo T"7400 WEP7400/74oo 221-29075 U38 SN7492AN 1(-7492 GE- 7492 51(7492 ECG7492 TM7492

UJC lUS15lN IC-74lS157 SI(74l5157 ECG74lS157 TM74l5151 U3D 5N1416SN IC-14165 ECG74165 TH74165 UJE (38129 I(-CARGEN

CARGENYI . UJF 5N74174N 1(-74174 E(G74174 TM74174 UlG F-74174P( IC-14174 ECG74174 TM74174

SN74174N E(G74174 TM74114

UlH-u3I N8T26N 1C-8T26 U4A-U4 5N74123N 1(-74123 6E-74123 REH 74123 5K74123 E(G74123 TM74123 221-29086 U4C ""'" 1(-7408 GE-74~ S1<74~ E(G74OS nmos WEP7408/7408 U4D 740lH IC-7403 ECG7403 TM1403 U4' 5N74QOH IC-7400 6E- 7400 REN 7400 51<7400 EC67400 TH7400 WEP74oo/74oo 221-29075 U4F 7474N IC-7474 GE- 7474 REN 7474 51(7474 ECG7474 TM7474 WEP1474/7474

5N7474N GE-7474 REN 7474 510474 EC67414 TM7474 WEP747417474

U4G F-74115PC IC-14115 ECG74115 TM74175 U4H F-7404PC IC-7404 GE- 7404 51(7404 [C67404 TH7404 221-29076

5N7404N GE-7404 51(7404 ECG7404 TM7404 221 -Z9076 U4J SN74l512N lC-74l512 UOK F-7404P( lC-7404 6E-7404 51(7404 EC67404 TM7404 221-29076

SN7404N GE- 7404 510404 ECG7404 TM7404 221-29016

USA DH742~ IC-7420 GE- 7420 510420 ECG7420 TM7420 221 -29077 f - 742OPC GE-7420 510420 ECG7420 TM7420 221-Z9077 • ~~:~~~ DM74L5163N IC-74L5163 S1(74l5163 ECG74LS~}! TM'4L516JA 5N74LS1S1N IC-74l5157 5K741SIS7 ECG74LS157 TM74LS157 F74LS157PC 5K14LS157 ECG74LS1S7 TH74L5157

"" SN72555 IC-555 GEIC-269 PTC1555 S1(3564/955M E(G955M TM955M WEP2119/955M 221-29042 UA555TC GEJC-269 PTC1555 51(3564/9551-1 E(G955M TH955H WEP2119/955H 221-29042

U68 74L5157PC 1(-14LS151 SK74lS157 ECG74LS157 TM74LS157 U6C 7438N lC-7438 51(.7438 ECG7438 TH7438 U6D 5N7400H lC-7400 GE-74oo REN 7400 SI0 400 ECG7400 TM7400 WEP740017400 221-Z9075

U6E 74LS139N tC-74LS139 U6F 7430N 1(-7430 SI(7430 ECG7430 TM7430

9N30/1430 SI0430 E(G74l0 TM1430 U6G- U6H 5N7400N IC-74oo GE-74oo REN 7400 SI0400 ECG7400 TM7400 WEP7400/1400 221 -29075 U6I F-7402PC IC-7402 GE- 7402 510402 [CG7402 TH7402 WEP740Z/7402

S"7402N GE-7402 SK7402 ECG7402 TM7402 WEP7402!7402

U6J F-7404PC lC-7404 GE-7404 SK7404 ECG7404 TM7404 221-29076 5N7404N GE-7404 SI(7404 ECG7404 TM7404 221-Z9076

U6K DM7420H 1(-7420 GE-7420 SI(7420 [[G7420 TM1420 221-Z9077 F- 7420PC GE- 7420 SI(.7420 ECG1420 TH7420 221 -29077

U6L F- 7404P( lC-7404 GE- 7404 51<7404 E(G7404 TM7404 221 -29076 SN7404H GE-7404 51(7404 ECG7404 TM7404 221 -29076

Ql 2N5225 Q-2N5225 GE- 20 PTCl15 REN 12JA SI(3444/123A ECG123AP TH123AP WEP736/123A 121-Z9000A

(1) If rep1 acement is requi red. do not substi tute.

ElECTROLYTIC CAPACITORS REPLACEMENT DATA

ITEM RATING MFGR . CORNell· MAllORY SPRAGUE PART No.

No. DUBllIER PART No. PART No.

PART No. Q·lINE GENERAL LINE

C2D " \6, C-S06 NLWSO-16 TT15X5OA QEl-3S1 TV.A-1150 C21 " 16V C-506 NLWSO-16 TTl5X5OA OEl-351 TV,o-1150


ITEM RATING MFGR. CORNEll· SPRAGUE PART No. No. PART No. DUB1L1ER MALLORY

PART No . PART No. Q..UNE GENERAL UNE • Cl • 1 lOY CS - l0410 MAG1201 QCl-223 HY-360 C2 . 1 lOY CS- l0410 MAG1201 OCl -223 HY-360 OJ .1 lOY CS-I0410 MAGI 201 QCl-223 HY-360 CO .1 lOY C8 -1 0410 MAGI 201 QCI -223 HY-360 OS 10 l KV 10% (-100

22

C4P/C4PMF- 540 BOARD PARTS LIST AND DESCRIPTION (CONTINUED) (When ordering (Xl"s, slole Model, Pori Number, and De~'rlptJon.1

CAPACITORS (cont) REPLACEMENT DATA

ITEM RATING MFGR. CORNelL· SPRAGUE PART No. No. PART No. DUBIUER MALLORY

PART No. PART No. Q·UNE GENERAL LINE

" .1 lOY CB·I04I0 MAGI 201 0'1-223 HY·360 C7 .01 100Y C· I03 WMF1S1 EWFIAll0 QFI-91 IPB-SIO C8 10 IKV 10% C·IOO C9 27 IKY 1l C·270 Cto 50 Trimmer CP-SOO Cll • I lOY CB-I0410 HAG1201 QCI-223 HY-360 Cl2 . 1 lOY CS-I0410 ~G1201 QCI-223 HY-360 ClJ .1 lOY CS-I0410 HAGI201 QCl-223 HY-360 Ct. .1 lOY CB-10410 KAG1201 QCI-223 H't'-360 C15 .1 10'1' CB-I04I0 MAGI 201 QCI-223 H't'-360 C16 . 1 10'1' CB- I04I0 MAGI 201 QCI-223 H't'-360 C17 . 150'110% C- I04 WJo\F05Pl EWF05010 431PI049R5 C18 .001 100'1' 10% C-I02 DPMS601 EWFlA210 QFI-I IPB-OIO C19 . 001 100'1' 101 C- l02 DPMS601 EWFlA210 QF1-1 I PB- Ol0C-102 022 .1 lOY CS- I0410 HAGI201 QCI-223 HY-360 O2J .1 10'1' CS-l0410 WiGI201 QCI-223 H't'-360 02. . 1 10'1' CB-I0410 HAGI201 QCI-223 H't'-J60 02' • I lOY CB-:-I04I0 HAG1201 QCl -223 HY-360 02. . 001 100Y l OS C-I02 OPMS6Dl [WF1A210 QF1-1 IPS-DID C27 .1 10'1' CB- 10410 HAGI 201 QCl - 223 H't'-J60 C28 . 1 10'1 CB- l0410 MAGI 201 QCI-223 HY-360 C29 .1 10V CB-I 04I0 MAGI 201 QCI -223 HY-360 OJO .1 10'1 CB-10410 MAG1201 QCI-223 HY-360 C" .1 10'1' CB-10410 MAGI 201 QCI-223 HY- 360 CJ2 .1 10'1' CB- I0410 /'!AG1201 QCI-223 HV-360 CJJ .01 100'1' lOS C- l03 WHFlSI EWFlAll0 QFI - 91 IPS-SID CJ4 . 0047 100Y C-472 WHFlD47 [WFlA247 QFI-57 lPS -047 CJ5 .1 lOY CB-10410 HAGI201 QCl -22J HY-360 CJ6 220 500Y lOS C-221 GPJ22 10TS-T22 CJ7 .1 lOY CB-I04I0 MAGI 201 QCI-223 HY- J60 CJ8 .1 lOY CB-I 0410 HAGI20l QCI -223 HY-360 CJ9 .1 lOY C6-10410 MAGI 201 QCI-223 HV-360 040 . 1 lOY CB· IQ410 HAGI201 QCI -223 HV-360 04' .1 10'1' CS- I0410 HAGI201 QCI-223 HY-360 042 .1 10'1 CB-I0410 MAGI 201 QCI-223 H't'-360 O4J .1 lOY CB- l0410 HAG1201 QCI-223 HY-360

'" 150 IKV lOS GP315 lOTS-TIS

CONTROLS (All wattages 1/2 watt or less unless listed) , , ITEM

REPLACEMENT DATA FUNCTION RESISTANCE MFGR. MAllORY TRW No.

PART No. PART No. PART No.

RS Bhs 'OK RP-ID3 RVAD911 VI OJ X260RID3B R9 Yideo 200 RP-201 "0 Color 'OK RP-I03 RVA0911 VI 03 X260RI03B R22 Blankfng 'OK RP-I03 RVA0911 VI 03 X260R103B R2J Sync 500 RP-S02 RVA091lV502 X260R5028

RESISTORS (Power ond Spedal) REPLACEMENT DATA REPLACEMENT DATA

ITEM RATING ITEM RATING MFGR. WORKMAN MFGR. WORKMAN No. No. PART No. PART No. PART No. PART No.

" 10K 51 1/4W RI-l03 22- 1120 "8 161< 51 1/4W RI -163 FI ameproof Carbon Flameproof Carbon

Fl1m Flla! RJ 470 51 1/4W RI-471 22-HE8 R2 ' 1000 51 1/4W Rl-102 22- 1096

Carbon fllm Flameproof Carbon .. 470 51 1/4W RI-471 22- 1088 Fl1m CArbon Fllm R2' 1000 5% 1/4W RI-I02 22-1096

" 10 51 1/4W Rl·IOO 22-1048 Flameproof CArbon Flameproof Ca r bon Fl1m

Fllm R2. 1000 51 1/4W Rl-102 22-1096 R7 470 SI 1/4W RI-471 22- 1008 Flameproof CArbon

Carbon Film Fflll R8 27 51 1/4W RI-270 22·1056 R27 ICJ: 51 1/4W RI -I03 22-1120

CArbon Film Flameproof CArbon ", 390 51 1/4W RI-391 22- 1081 Fl1m FI ameproof ca rbon .28 18.K 51 1/4W RI - 183 22-1126

Film Flameproof Ca rbon "2 4700 51 1/4W RI-472 22-111 2 Film

Carbon Film .29 10K 51 1/4W Rl-103 22-1120 "J 470 51 1/4W RI-471 22-1088 FI ameproof Carbon

Carbon FilII! Fl1m .14 470 51 1/4W RI-471 22-1088 .JO 1000 51 1/4W Rl-102 22-1096

Carbon Fl1l1 Flameproof Carbon R15 10K 51 1/4W RI - l03 22-1120 Fl1m

Flameproof Carbon ." 1000 51 1/4W RI-l02 22-1096 Fl1m Flallleproof Carbon

.16 1000 51 1/4W RI -I 02 22-1 096 Fl1m Flameproof Carbon .J2 220 51 1/4W RI-221 22-1080

Film Flameproof Carbon '17 10K 51 1/4W RI -I 03 22- 1120 Film

Flameproof carbon RJJ 1000 51 l/4W Rl -102 22-1096 FilII! Flameproof CArbon

Film

23

C4P/C4PMF- 540 BOARD PARTS LIST AND DESCRIPTION (CONTINUED) (Wh." ordering parh, dol. Moael, PorI Number, ond De sCflphonJ

RESISTORS (Power ond Spedal) (cont) REPLACEMENT DATA REPLACEMENT DATA

ITEM RATING WORKMAN ITEM RATING MFGR . WORKMAN

No. MFGR. No. PART No. PART No. PART No. PART No.

." 1000 51 1/4W Rl-102 22-1096 .. 0 4700 SI 1/41/ Rl -47Z 22-111 2 Flameproof carbon Flameproof Carbon

Fil m Film R35 4700 51 1/41/ RI-412 22-1112 .. , 1000 51 1/41/ Rl-102 22-1096

carbon FilII Flameproof Carbon ." 2200 51 1/4W R1-222 22-1104 FilII! Flameproof Carbon .. 2 1000 51 1/4W R1-102 22-1 096

Fl1l1 Flalleproof Carbon R31 100 51 1/4W RI - 101 22-107Z film

Flameproof C&r-bon .. , 1000 5% 1/4W R1 - 102 22-1096 Fllm Flameproof Carbon ." 1000 51 1/41/ Rl-102 lZ-1096 Film

Flameproof Carbon ." 1000 5% 1/4W Rl-I02 22- 1096 Film Flameproof ca rbon

'39 1000 51 1/4W Rl-102 22 -1 096 film Flameproof Carbon R45 100 51 1/4W R1 -101 ZZ~I072

Film Flameproof Carbon Film

MISCELLANEOUS ITEM

PART NAME PART No. NOTES No.

J] Socket SC-IZFH IZ Pin (4 used) J2 Socket SC- lZFH l Z Pi n

" Crystal X~ IZ6 lZKiz Xl Crystal X-35S 3.S8ftlz

Socket SC-14FI 14 pj, IC So,k" 12 ""'I Socket SC~16FI 16 Pin IC Socket 9 used

Socket SC~ 18FI 18 Pin IC Socket 6 used Socket SC-24FI 24 Pin IC Socket (1 used P. C. Board PC~54C81 Video/Color

C4P/C4PMF- 542 BOARD PARTS LIST AND DESCRIPTION (Whe" orderi"g por/i, $Iole Model, PorI Numher, o"d DeSCription.)

SEMICONDUCTORS (Select replacement transistor lor best results) REPLACEMENT DATA

ITEM TYPE MFGR. GENERAL No. No. PART No. ELECTRIC MALLORY RAYTHEON RCA SYlVANIA THORDARSON WORKMAN ZENITH


01~D16 lN914 Q-IN914 GE-SI4 PTC214 REN 177 SO I00/SI9 ECG519 TH519 WEP9Z5/S19 103-131 UI - UZ NaT26N IC-8T26 UJ-U6 OO47SN 1C-747S GE-7475 SK7475 ECG7475 TH7475 U7 SN74LSl38N IC-74lSIJ8 SK74lS1J8 ECG74lS138 TH74lS138 1.0 00404N IC-7404 GE- 7404 SK7404 ECG7404 TH7404 221 ~Z9076 U9- UIO 74LS193N IC-74LS193 SK74lS1 9J ECG74LS19J TK74LS193 U11 74LS3909C IC-74LSJ90


ITEM RATING MFGR. CORNELL- MALLORY SPRAGUE PART No.

No. PART No.

DU81UER PART No. PART No. o-UNE GENERAL LINE

C1 47 16' C-S06 IlLWSO~16 TT1SXSOA QE1 -351 TVA-IISO C8 47 16' C-S06 NlWSO-l6 TTlSXSQP. QF1~3S1 TVA-llSO CO 47 16' C-S06 NlWSO~ 16 TTl SXSOA (\El~3S1 TV"~1150


ITEM RATING MFGR. CORNEll- SPRAGUE PART No. No. PART No. DU81UER MALLORY

PART No. PART No. o ·UNE GENERAL LINE

C2 . 1 lOY CB-I0410 HAG1201 QCl-ZZJ HY~360

C3 .1 10V CB-l0410 HAGIZOI QCl-Z23 HY- 360 C4 .1 IOV CB-10410 HAG1Z01 QC l-ZZJ HY- 360 OS . 1 10V CB- l0410 HAG1201 OCl -ZZJ HY-J60 CO .1 10V CB~I0410 HAG1Z01 QCI-2Z3 HY- J60 C7 .1 lOV C8-10410 HAG1ZOl QCI-ZZJ HY-J60 C10 220 500v lOS C~221 IOTCC-T22 Cll ZZO 5QOV lOS C- W 10TCC-T22 C12 .1 lOV CB-I0410 HAGI ZOI QCl-2ZJ HY-J60

RES ISTORS (Power ond Special) REPLACEMENT DATA REPLACEMENT DATA

ITEM RATING WORKMAN ITEM RATING MFGR. WORKMAN

No. MFGR. No. PART No. PART No. PART No. PART No.

" 4700 SI 1/4W RI-472 22-1112 R3 510 SI 1/4W RI-Sll Flameproof Carbon Flameproof Carbon

Film FUm R2 8200 SI 1/4W RI-822 22- 1118 " 6B1C 51 1/4W Rl -683 22-1140

Flameproof Carbon Flameproof ta:rbon Film Film

C4 (w.

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C4P/C4PMF- 542 BOARD PARTS LIST AND DESCRIPTION (CONTINUED) (When ordering porlJ, dole Model, Part Number, orld DeJC(;plion.)

RESISTORS (Power ond Specio l) (conf) REPLACEMENT DATA REPLACEMENT DATA

ITEM RATING ITEM RATING No. MFGR. WORKMAN No. MFGlt

PART No. PART No. PART No.

" 331: 51 1/4W RI-333 22-1132 RlJ 4700 5% 1/4W RI-472 F1 ameproof carbon Flameproof Carbon

Film Film

" 16K 51 1/4W 111-163 RI' 4100 51 1/4W 111 - 472 F1 ameproof ca!"bon Flameproof Carbon

Fl1m film R7 1000 SI 1/4W Rl - 102 22- 1096 Rl5 4700 S:r. 1/4W 111-412

Flameproof Carbon Fhmeproof Ca r bon Film Film .. 3900 51 1/4W 111-392 22- 1110 RI' 4700 51 J/4W 111-472

Fl_pl"OOf Carboll fl ameproof Carbon film Fillll

" 2000 51 1/411 111 - 202 '17 4]00 SI 1/4W 111-472 Flameproof Carbon Flameproof Carbon

Fllm FOm RIO 1000 51 1/4W Rl-102 22-1096 '18 4700 51 114W Rl-47Z

Fl ameproof Carbon Flameproof CuOOn FilII FilII

'" 510 51 1/4W Rl-511 'l9 4700 51 1/4W Rl-472 Flameproof CarlXln Fl,mepl"OOf Clrbon

Film film R12 4700 51 1/4W Rl-472 22-1112

Filmeproof carbon Fillll


Jl Socket SC-12FM 12 Pin J2 Socket SC-16FI 16 Pin JJ Socket SC-16fI 16 Pin 51 thru S51 Swl tch IU'-Keys Swl tch Keyboard

P.C. Soan! PC-S42Bl Keyboard Asser!lbly (Rev B) Socket SC-16fI 16 Pin IC Socket (10 used) Socket SC-14fI 14 Pin IC Socket

C4P/C4PMF- 582 BOARD PARTS LIST AND DESCRIPTION (When ordering parh, dole Model, Pod Number, ond DeJcription.)

MISCELLANEOUS ITEM

PART NAME No. PART No. NOTES

Plug SC- \2)tt 12 Pin (l6 used) P. C. BOln! PC-582A Blckplane

C4P- CHASSIS PARTS LIST AND DESCRIPTION (When ordering ports, Jlole Model, Pori Number, and DeJCtlpl,onJ

WIRING DATA Shi elded Hook-up WiN! .... . •.........••.•.

General-use Unshielded Hook-up Wire ......

Use BELOEN No. 8401 or B421 (Single-Conductor) B208 (T'oIo-Conductor)

Use BELDEN No. 8528 (S\l11d) Availlble in 13 Colors 8522 (Stranded) Available In 13 Colors

CONTROLS (Aft wattages 1/ 2 watt or fe .. unfe .. fisted) , , ITEM

REPLACEMENT DATA

No. fUNCT ION RESISTANCE MfGR. MALLO RY

PART No. PART No.

WORKMAN PART No.

22-1112

22-1112

22-1112

22-1112

22-1112

22- 1112

22-1112

TRW PART No.

RI Fine Color Adj 1000 RP-102 19-7924 (5)

1JA131,SKIOOO BU2 ,CF6 ,SS3 . OC!

(5) Number on unit.

FUSE DEVICES REPLACEMENT DATA

ITEM DESCRIPTION PART No. BUSS UTIELFUSE WO RKMAN No. PART No. PART No. PART No.

DEVICE I HOlDER DEVICE I HOLDE R DEVICE HOLDER DEVICE

n 2A t 2SOV F- 002 I HW-FHl AGe' I "KP 312002 I 342001AF Qulck-actln9

2S

C4P- CHASSIS PARTS LIST AND DESCRIPTION (CONTINUED) (When onienng porlt, state Madel, Par' Numher, and DUcnpllanJ


J20 Jack SC-l FJ AC Control (Swltchcraft 35Dl-FP) J21 Jack SC-l FJ Vi deo Itlnftor (Switchcraft 35Dl-FP) J22 Jack SC-1FJ tassette Output (Swltchcraft 35DI -FP) J23 ""k SC-1FJ Cassette Mike (Swltche r.ft 3501-FP) J24 Jack SC-1FJ Audio (Switcheraft 3501-FP) J25 Jack SC-1FJ OAC (Swltchcrlft 3501-FP) ., Molar HW-FAN FIn, Asselltl1y 'WI Switch SW-Tal Power Off/On

AC Power CoI'1l W-3ST18AC 3 Conductor cable W-1612FC 12" FlexIble Asselltlly, 16 Conductor cable W-1624FC 24" FlexIble Assembly, 16 CondltCtor P .C. BaIrd PC-5429P Keyboard Asserilly P.C. Board PC-S02P CPU P.C. Boal'1l PC-Al SP C4-P Connector P. C. Board PC-54001P VI deo-Co lor P.C . Board PC-582P Backplane P1U9 SC-121'14 12 Pin

C4PMF- CHASSIS PARTS LIST AND DESCRIPTION (when ordering porl5, dole Model, PorI Number, ond Deserlplton.}

WIRING DATA Shielded Hook-up Wire .................. ..

General-use Unshielded Hoo~-up Wire •...• .

Use BELDEN No. B401 or 8421 (Si ngle-CorKIuctor ) 8208 !TWO-COndUctor )

Use BELDEN No. B5lS Solid) Avallable in 13 Colors 8522 Strandedl Avallable in 13 Colors

CONTROLS (All wattage. 1/2 watt or less unless listed) , , ITEM REPLACEMENT DATA

No. FUNOION RESISTANCE MFGR. MAllORY PART No. PART No.

R] Fine Color Adj 1000 RP-1OZ UA 13L , SK1 000 19-79Z4 (5)

(5) Nllllber on unit .

FUSE DEVICES REPLACEMENT DATA

ITEM DESCRIPTION PART No. BUSS LlTTElFUSE

No. PART No. PART No.

TRW PART No.

BUZ ,CF6 ,SS3 , DCl

WORKMAN PART No.

DEVICE HOLDER DEVICE HOlDER DEVICE HOLDER DEVICE

F1 ZA iii 2S0V F-002 H342004A AGe2 HKP 312002 342001AF FGZ-2 Quick-acting

MISCELLANEOUS ITEM PART NAME PART No. NOTES No .

J20 Jack SC-1FJ AC Control (Switchcraft 3S01-FP) J21 Jack SC-1FJ Video Itmitor (Swltchcnft 3S01 -FP) JZ4 Jack SC-1FJ Audio (Swltchcraft 3S01-FP) J2S Jack SC-1 FJ OAC (Swltchcra ft 3501-FP) Ml Motor HW-FAN Fan, Assembly 'Wl Switch SW- TOl Power, Off/On (Arrow Hart B2607)

AC Power Co rd U- lST1BAC J CGndltCtor table W-1612FC 12- Fhxable Assedlly , 16 CGnductor table W-1624FC 24- Flexable Assent>ly , 16 Conductor Cable 15" Flexable Assembly , 40 Conductor P.C. Board PC-54ZP Keyboard Assenmly P.C. Board PC~505PB CPU with floppy Interface P. C. Board PC· 527P Cfr4..9 Me-ory P. C. Board PC-AI SAP C4-P Connector P.C . Board PC-54OBIP Video Color P. C. Board PC- SB2P Backplane P. C. Board PC-All Backplane Protector P . C. BOlrd PC-A13 Mini Floppy Plu9 SC-1 2Jt4 12 Pin (3 used)

S41 ~~ ..

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R9 VIDEO (MONITOR) AND R5 BIAS

Place computer into "BASIC" with color disabled. Enter the following program.

10 FOR X = 53248 TO 55295: POKE X,161 : NEXT X: END

Type "RUN", Return.

Adjust R9 for best contrast, but do not allow unit to lose sync. Input of scope to 01 emitter, adjust R5 for a peak level of 1.8 volts.

R23 SYNC

Input of scope to 01 emitter. Adjust R23 for a sync pulse of .75 volts pop.

R1D COLOR

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3.579545MHz SIGNAL

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R17 TX CLOCK

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R75 DURATION (TAPE PULSE)

Connect jumper between Pins 10 and 11 of J2.

Press IIRESET/

Press lie" Press "RETURN" Press "RETURN" Type 10 Print "U"; Return Type 20 Go TO 10 Return Type SAVE Return Type RUN Return

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Waveform 36

Waveform 39

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Waveform 42

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Waveform 34

Waveform 37

SOttSec S.OV

Waveform 40

O.SmSec 4.3V Program transferred from tape

Waveform 43

SmSec 4.3V Program to tape

Waveform 45

Program to tape

WAVEFORMS TAKEN IN "BASIC" MODE UNLESS OTHERWISE INDICATEO

54

Waveform 35

Waveform 38

Waveform 41

lmSec l.lV Program transferred from tape

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Tape mode prior to program storage

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R56 TX CLOCK

Input of scope to U3C, Pin 5. Adjust R56 for a positive pulse width of 400nSec.

R52 TX OATA

Input of scope to U3C, Pin 4. Adjust R52 for a negative pulse width of 400nSec.

R57 RX CLOCK

Remove floppy-d isk cable (J2). Connect a jumper from Pin 9 of J2 to Pin 10 of J2. Input of scope to U4C, Pin 13. Adjust R5? for a positive pulse width of 1l'Sec. Remove jumper and reconnect J2.

R58 RX OATA

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77

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LEGEND

AO-A15 ... BS,BSO-B

CSO-CS7 CTS ... . 00-07 .. . ~O ..... . IRQ .... . MSO-MS2 NMI .... ROY .. , . RESET . . . RTs.. .. . R/W .. .. RX ClK .. RX DATA . SS ..... . TX ClK . TX DATA VMA ... 00 .. .. 02 .... . 02 VMA .

Any B numeric active i

LEGENI

AO-A15 . . ClR .. .. CNT ... . CSP ., " I

CTS .. .. CTSM .. CSS (FCX

LEGEND FDR 502-BOARD SCHEMATIC

AO-A15 .. , ........ . . . .......... Address BS,BSO-BS3 ...... ..... . .. ... Basic ROM

Select and Monitor CSO-CS7 ...... . ..... .. Chip Select RAM CTS ... . .. . . .. ........... Clear to Send 00-07 ... .. . ... . . ........... . ..... Data DO ............. . .... .... , .. Data Direct IRQ .......... .... .... Interrupt Request MSO-MS2 .......... Monitor ROM Select NMI . .......... Non-maskable Interrupt ROY . .. . .. . .......... . . . . . . . . . , . Ready RESET .......•.. . . . . . .. .. ........ Reset RTS . . .. . , . .......... .. . . Ready to Send R/W ....... . .... . ........ . . Read/Write RX ClK .. . . . .... . . .. ..... Receive Clock RX DATA ...... . ...... .. . . . Receive Data SS ......... .... . . ........ Sound Select TX ClK ..... . .... .... . . . Transmit Clock TX DATA . , .. . .......... . . Transmit Data VMA . . ... ...... . Valid Memory Address 00 . .... . .. . . .. Microprocessor Clock In 02 .......... . . . ....... .. . . . Phase Two 02 VMA . . .. ............. . . . . Phase Two

Valid Memory Address



AO-A15 ............... .... . .. .. Address ClR ............ . .. ... . . ......... Clear CNT " . . .. . .. . ... . .. . , . . . . . ..... Count CSP .... . ........ . . . Chip Select Parallel CTS .. ... . . . . . . . ......... Clear To Send CTSM .. , ......... Clear To Send Modem CSS (FCXX) ........... Chip Select Serial

(Machine Address)

505 BOARD (CONTINUED)

CSFl (COXX) .... .... . Chip Select Floppy (Machine Address)

FCA1-FCA2 .. , ... . Real Time Clock Port A FCB1-FCB2 ....... Real Time Clock Port B 00-07 ............... ... . . ........ Data OCO ' . ...... .. ...... Data Carrier Detect FOXX ....... . .. , .... Machine Language FEXX .... . . . ..... . .. Machine Language FFXX ... . . . .. ... .... Machine Language IOAO-IOA1 ...... . ........... 1/0 Address 1001-1007 ... . .. . . ......... . , . .. 1/0 Data IOR/W ....... . ... . . . .... I/O Read Write 1002 VMA .. . .. . . . . . . ... . . 10 Phase Two

Valid Memory Address IRQ ....... . ... .. .. . . . Interrupt Request lA2-lA3 ........ . ... . . Latched Address NMI ............ Non-Maskable Interrupt PAO-PA7 ........... . ........... . . Port A PBO-PB7 .. . .. ... . . ....... . ..... . ,Port B RES .......... . . ...... . , . .. .. . ... Reset RTS . .. ......... . . ..... .. Ready to Send R/W . .. . .. .. ... .... . .. , . .. . Read/Write 1 R/W . . ..... . . . .... Internal Read/Write RX ClK . . . ............... Receive Clock RX DATA .. . .. . ... . . . .... . . Receive Data SEP CLOCK . .. . . . . . ....... Receive Clock SEP DATA ................ . Receive Data SR ClK . . ........ . . Serial Receive Clock ST ClK . . . . . .. . ... Serial Transmit Clock TX ClK ........ . . . . . ... . Transmit Clock TX DATA .. ........ . , . ... . Transmit Data UCA2 . ......... User Control Bits Port A UCB2 ......... . User Control Bits Port B WAIT . ....................... . . , .. Wait 1 02 VMA ........... Internal Phase Two

Valid Memory Address 02 .... . .... . . . . . ........... Phase Two 02 VMA .. . . .. ....... . , . ..... Phase Two

Valid Memory Addres


LEGI

AO-A1! CEO-CI DO ... 00-07 IR/W. MM .. R/W . VMA . WAIT , YO-Y1-00 .. . 02VM

Any nume actiVE

LEGE

AO-A15 B .... CO-C9 . COO-CD CEA .. CEB .. CEO .. CE1 .. CHlO . COL C

COL C COLOR CVRO . CWE .. 00-07 DO ... DEB .. DOT IN


AO-A19 ...... .. . . ........... . . . Address CEO-CE23 . . . . ... . ... . .' Chip Enable RAM 00 . . . . . . ....... . ........... Data Direct 00-07 . .. ........... . . . ........ .. . Data IR/W .. . ..... . ...... Internal Read/Write MM .. . . . .... . .... Memory Management R/W . .... . ... . . . ....... . . . . Read/Write VMA . ......... .. Video Monitor Address WAIT ... .. .... ... . . .... .. . . ....... Wait YO-Yl-Y2 .. . ..... Upper Memory Decode 00 . . .... . .. .. .... .. .... . . . . . .. Phase 0 02 VMA . . . . ... . . ... ..... .. .. Phase Two

Valid Memory Address



AO-A15 .. . . ........ . .. . ....... . Address B .......... .. . . ........ . ........ . Blue CO-C9 ......... . . .. ......... . . . .. Count COO-C06 . . .. . .. . .. . . . Color Data(Phase) CEA ..... . . ... . . . . ... . . . ... Chip Enable CEB . ... ......... .. ........ Chip Enable CEO ... . ..... ... ... . . .... .. Chip Enable CEl ......... . .. .. . ..... . .. Chip Enable CHLO .. .. .. . .. ... ........ Column Load COL CLR . . . .. ...... . ...... Column Clear COLOR CL ......... ... ...... . Color Clear COL CLOCK ... . ........... Column Clock COLOR FREQ ...... . . . .. Color Frequency CVRO . . . . . .. ColorVideo Read Direction CWE .. . . . . . ....... . . Color Write Enable 00-07 ... .. . ........ . ... . . . .. . . . . . Data 00 .......... . . . . . . . . . .. . . . . Data Direct OEB ... . . .. ... . ..... Delayed End Blank OOT INHIBIT ... . .. . .. .. ... .. . . Dot Inhibit

92

540 BOARD (CONTINUED)

OOT SHAPE .. . ..... .. .... . . . . Dot Shape ENO BLANK . . . .... . ...... . ... End Blank G ...... . .. . ..•.....•.. .. ..... . .. Green HS . . ... . ..... . .... . . . .. .. .. Horiz Sync 100-103 ..... .. .... . .... . . . 1 nternal Data KBO ...... . ......... Keyboard Direction KBE . ... . . .. .. . ...... . Keyboard Enable KOO-K07 . .... . . . ...... . . Keyboard Data NI .. . . . ...... . ......... . Noise Interval R ... . .... ... .... . .... . ... . ..... '.' .Red RO-R7 ..... . . . .... . . . .. . ...... . ... Read R/W .... . . . ............. ... ReadlWrite SE .... . . . ........... . ... Select Enable Sl ......... . . .. . . ................ Sync S4-S7 ... . . ... .......... . . . ....... Sync T3 ..... ...... . . . .... . ........... . . Time VAO-VA9 .... . ... ... .. . .. Video Address VAS . . . . .... . . . . . . Video Address Select VOO-V07 . .. . ......... . ...... Video Data ~ VCEA . ........ .... . . . Video Chip Enable VCEB .. . .. . . ....... . . Video Chip Enable VMA .. . ...... . .. Video Monitor Address VRO .. .... . .... . .. Video RAM Direction VS ... .. ......... . . .. ........ Vert Sync WE .. . ......... . . . ........ Write Enable 1 R/W .... . . .. . . .... 1 nternal Read/Write 32 . . .... . ............ .. . . 32 Character 00 .......... .. Microprocessor Clock In 02 VMA ..... .. . . ...... . ..... Phase Two

Valid Memory Address 02 . . .. . .... . .. . . ......... . . Phase Two


Documents

SAMS C4P Service Manual