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FILE NO.

SERVICE MANUAL Colour Television

Model No. 29-F5BA(Argentina)

Service Ref. No. 29-F5BA-00 29-F5BA-01

VIDEO

POWER

1 4 7

2 5 8

3 6 9 0IMAGE SLEEP

MUTE

DISPLAY CH-RECALL

CH VOL VOL

MENU

CHJXVD

SpecificationsPower Source . . . . . . . . .AC220V, 50Hz / 60Hz Receiving System . . . . . .PAL (N/N, M/M), NTSC (M/M) Channel Coverage Antenna mode VHF: 02-13, UHF: 14-69 CATV mode VHF band: 01-13, Mid band: 14-22 Super band: 23-36, Hyper band: 37-94 Ultra band: 100-125 Low mid band: 01 and 95-99 Video IF . . . . . . . . . . . . .45.75MHz Sound IF . . . . . . . . . . . .41.25MHz Aerial Input Impedance . .75 Ext. Terminals Video inputs: Phono jack ! 2(1Vp - p, 75) S-Video terminal (DIN 4 pin, separate Y/C signal input) ! 1 Audio inputs: Phono jack (R/L) ! 2 (436mVrms, more than 40K) Video monitor outputs: Phono jack ! 1(1Vp - p, 75) Audio monitor outputs: Phono jack (R/L) ! 1 (436mVrms, less than 600) Variable Audio Output: Phono jack (R/L) ! 1 (less than 1 K) Sound Output (RMS) . . .5W + 5W Dimensions . . . . . . . . . .768(W) ! 617.5(H) ! 487(D)mm Weight . . . . . . . . . . . . . .approx. 35.7Kg

Product Code: 1 113 338 00 Original Version Chassis Series: LB1-AGive complete SERVICE REF. NO. for parts order or servicing. It is shown on the rating plate at the cabinet back of the unit.

This T.V. receiver will not work properly in foreign countries where the television transmission system and power source differ from the design specifications. Refer to the specification table.

Specifications subject to change without notice.

F5BA/F5BAS

ContentsSafety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Chassis Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8 Service Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-10 Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Adjustment in the Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14 Mechanical Disassemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Chassis Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-26

Safety NoticeSAFETY PRECAUTIONS1: An isolation transformer should be connected in the power line between the receiver and the AC line when a service is performed on the primary of the converter transformer of the set. 2: Comply with all caution and safety-related notes provided on the cabinet back, inside the cabinet, on the chassis or the picture tube. 3: When replacing a chassis in the cabinet, always be certain that all the protective devices are installed properly, such as, control knobs, adjustment covers or shields, barriers, isolation resistor-capacitor networks etc.. Before returning any television to the customer, the service technician must be sure that it is completely safe to operate without danger of electrical shock.

X-RADIATION PRECAUTIONThe primary source of X-RADIATION in television receiver is the picture tube. The picture tube is specially constructed to limit X-RADIATION emissions. For continued X-RADIATION protection, the replacement tube must be the same type as the original including suffix letter. Excessive high voltage may produce potentially hazardous X - RADIATION. To avoid such hazards, the high voltage must be maintained within specified limit. Refer to this service manual, high voltage adjustment for specific high voltage limit. If high voltage exceeds specified limits, take necessary corrective action. Carefully follow the instructions for + B1 volt power supply adjustment, and high voltage check to maintain the high voltage within the specified limits.

PRODUCT SAFETY NOTICEProduct safety should be considered when a component replacement is made in any area of a receiver. Components indicated by mark in the parts list and the schematic diagram designate components in which safety can be of special significance. It is particularly recommended that only parts designated on the parts list in this manual be used for component replacement designated by mark . No deviations from resistance wattage or voltage ratings may be made for replacement items designated by mark .

-2-

SAW FILTER R-Y IF IN 47/48 34 33 19 32 36 37 1 38 39 VERT. OUT 2 12 8 20 VERT. DRIVER-Y B-Y R-Y B-Y

IC201 IF/VIDEO/CHROMAQ705 G OUT Q703 B OUT Q701 3 1 R OUT 35 G-Y B-Y -Y

IC801 CPUX161 23 24 18 SIF IN 1H DELAY 5 7 ANALOGUE-BUS ADDRESS ANALOGUE-BUS DATA

A101 TUNER

Q901 CRT

IC802 MEMORYIC271 IC501VERT. DY HORIZ. DY

5 SIF FILTER 4.5MHz VIDEO OUT (WITH SIF CARRIER)

BUS SDA

2

H.V.

6

BUS SCL

3

DY

INT. VIDEO IN 10 31 25 30 29 13 14 EXT. VIDEO IN 7 16 51 HORIZ. HORIZ. DRIVE DRIVE Q431 R IN G IN B IN

T451FBT

Chassis Block Diagrams

SOUND CARRIER TRAP 4.5MHz R (OSD) 27 28 29 B (OSD) G (OSD)

HORIZ. OUT Q432

FOCUS VIDEO MONITOR OUT SCREEN

S-CHROMA IN

IC1101AV SW 3 1

AUDIO OUT

AV1 VIDEO

AV2 VIDEO

(Main Signal Processing Circuit)

S-CHROMA

9V 30V (AUDIO) 24V (VERT.) 130V (MAIN HIGH)

AC

POWER SUPPLY CIRCUIT

S-TERMINAL

Y

-3IIC BUS IC651 REG. 1 3 5V 15V V L R AV1 INPUT (REAR)

IC3401MTS DECODER 7 SDA SCL 22 23 39 38 37 36 40 41 26 L-OUT 25 R-OUT

IC001AUDIO AMP.R-OUT 5 8 SP901

L-OUT 1 10

SP902

T611 CONVERTER TRANS.

V L R AV2 INPUT (FRONT)

L R V MONITOR OUT (REAR)

L R VARIABLE AUDIO OUT (REAR)

ON-TIMER LED DRIVE

32 52 5 6 51PIP ENABLE (ENABLE=LOW) CAPTION OPTION (CAPTION=LOW) PIP OPTION (PIP=LOW) IF IDENT IN (NO SIGNAL=LOW) CAPTION ENABLE (ENABLE=LOW) PLL DATA OUT IF IN PLL CLOCK OUT D1003

PLL ENABLE OUT (ENABLE=HIGH)

IC802 MEMORY

2 3X'TAL SW-1

A101 TUNER

7 8 48 47 46 10 11 42 13 15 16 17 41 18 19 23 24 45 44 40 39 35 30 29 28 27BLANKING OUT OSD B-OUT RC SIGNAL IN (ACTIVE=LOW) TV/AV SW OUT (TV=LOW) AV1/AV2 SW OUT (AV1=HIGHT)

TO IC201 X'TAL SW-2

49

Q691 POWER ON/OFF

Chassis Block Diagrams

124V D683

IC801 CPU

POWER SUPPLY CIRCUIT

IC201 IF/VIDEO/ CHROMA

Q681

X'TAL OSC for CPU 43AFT SIGNAL IN

COLOR KILLER IN (COLOR ID=HIGH) SYNC. ID IN (NO SYNC.=HIGH)

9V KEY SCAN IN

(System Control)

-4KEY SWITCHESOPTION SW IN RESET IN POWER FAILURE

Q661

AC SWITCH OPTION (MECHA.SW=LOW, SOFT SW=HIGH)) AUDIO

POWER FAILURE DETECTION

RELAY ON/OFF FOR DEGAUSSING COIL OUT

IC3401 MTS DECODER

OSC for OSDANALOGUE BUS DATA TO IC201 ANALOGUE BUS ADDRESS Q816 Q817

AUDIO OSD G-OUT OSD R-OUT

D500

D483

VERTICAL DEFLECTIONQ815

V-PULSE IN H-PULSE IN

34 25 26

SOUND MUTE OUT (MUTE=HIGH)

IC001 AUDIP AMP.

FLYBACK TRANS.

L-SECAM

RF AGC

VIF IN

G-Y OUT

R-Y OUT

B-Y OUT

A-OUT

IF AGC

V/C VCC

-Y OUT

BLK-IN 35 34 33 32 31 OSD SWITCH RB AMP G-Y MATRIX H&V BLANK BRIGHT CLAMP

3.58MHz

4.43MHz

CCD 1H DL R-Y OUT B-Y OUT R-Y IN B-Y IN

SAW 52 IF GND RF AGC S-SW DEF COIN IDENT INT/EXT APC AG AGC ACC KILLER 1ST BPA BUZZ CANCEL AV-SW SECAM C-BPF SWITCH VIDEO DET VIDEO AMP V-SW FILTER ADJUST 2ND BPA IDENT X-TAL APA-CON (YNR) C-TRAP DELAY TINT VIF AMP VCO MEMO RB OUT PAL SW 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37

36

30

29

28

27

ADD LPF ALC

OSD F/F IDENT DET

CLOCK OUT

FM DET

SYNC SEP VER SYNC SEP IDENT DET VER C/D

AFC 1

AFC 2

LIM AMP

HOR C/D

PHASE SHIFTER

F.B.P. DET

LA7687N < IF/Video/chroma/Def. > IC201

LA7687

APC DET VCO

AFT GND

V/C BUS

HOR OSC

HOR DRIVER

1

2

3

4

5

6

7

8 VIDEO OUT

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

IC Block Diagrams

4.5MHz

5.5MHz

9.5MHz

SOUND TRAP

ID OUT

S-CHROMA

EXT-VIDEO

VCC 5V

AV-SW/SECAM

KILLER

V-OUT

BUS 2

S-SW

50/60Hz

AFT OUT

H-VCC

BUS 1

ACL

ABL

FBP

SC

-5-

CONTRAST

COIN

G-IN

R-IN

B-IN

IC Block DiagramsLC89950 < IH DL > IC271Vss B-Y INBGP

LC89950CCD 254.5bit 1 2 LEVEL INCREASER OUTPUT S&G, AMP

4 3 B-Y OUT

5CLAMP AUTO-BIAS

Vdd

6

2

RD

AUTO-BIAS

R-Y IN

7CLAMP BGP