Sanyo C29LK39S Manuel utilisateur

SERVICE MANUAL Colour Television

Product Code: 111355011

Original Version

Chassis Series: LA5-A

C4CM

FILE NO.

Model No. C29LK39S

Service Ref. No. C29LK39S-00

(Argentina)

Give 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 trans-

mission system and power source differ from

the design specifications.Refer to the specifi-

cation table.

Specifications

Power Source . . . . . . . . .AC220V, 50Hz / 60Hz

Receiving System . . . . . .PAL (M/M, N/N), NTSC (M/M)

Channel Coverage

Antenna mode VHF: CH02-CH13, UHF: CH14-CH69

CATV mode VHF band: CH01-CH13, Mid band: CH14-CH22

Super band: CH23-CH36, Hyper band: CH37-CH64

Ultra band: CH65-CH94 and CH100-CH125

Low mid band: CH95-CH99

Video IF . . . . . . . . . . . . . 45.75MHz

Aerial Input Impedance . . 75Ω

Ext.Terminals

Video inputs: Phono jack ✕2 (1Vp - p, 75Ω)

Audio inputs: Phono jack (R/L) ✕2 (436mVrms, more than 40KΩ)

Headphone Jack: Mini stereo jack ✕1

Sound Output (RMS) . . . . 3W + 3W

Speakers . . . . . . . . . . . 5cm x 9cm x 2 pcs.

Dimensions . . . . . . . . . 656(W) ✕600(H) ✕496(D)mm

Weight . . . . . . . . . . . . . approx. 31.0 Kg

Specifications subject to change without notice.

MENU ▼ CH ▲

VOLUME

VIDEO

L-AUDIO-R

Contents

-2-

Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Chassis Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Service Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16

Purity and Convergence Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Chassis Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-26

Safety Notice

SAFETY PRECAUTIONS

1: 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 pro-

vided 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 net-

works 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 PRECAUTION

The primary source of X-RADIATION in television receiver is the picture tube.The picture tube is specially con-

structed 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 ser-

vice 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 volt-

age check to maintain the high voltage within the specified limits.

PRODUCT SAFETY NOTICE

Product 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 .

Chassis Block Diagrams

-3-

T611B

Q432

IC501

VERT-OUT

T471

IC802

IC801

CPU

QXXAVC479P

TUNER SAW IC201

LA76818AM

IC3401

CXA2134QP

IC002

LA42052-E

AUDIO AMP

SDA SCL

ON-TIME

STANDBY

BLK

OSD

SDA

SCL

X161

A101

ANT

IF IN

5/6

SCL

SDA

BLK

12 11 14 15 16 17

34 33

FM OUTPUT

EXT VIDEO IN

K1001 K1002

REAR AVIN FRONT AVIN

VIDEO VIDEO

A-L A-L A-R

A-R

K1921

POWER

CIRCUIT

CONVERTER

TRANS

130V(MAIN HIGH)

20V(AUDIO)

12V(MAIN LOW)

24V(VERT)

9V IC202

REG.IC

5V-2

REG.IC

IC681

5VRC

2723

HORIZ-OUT

FBT

VERT.OUT

HORIZ.OUT

AUDIO RIGHT

AUDIO LEFT

HEADPHONE JACK

Q900

CRT

MEMORY

5/6

MTS DECODER/AUDIO CONTROL&SW

IIC BUS CONTROL

(WITH PLL)

FILTER

IF/VIDEO/CHROMA/DEFLECTION

DEFLECTION YOKE

C-CAPTION IN

SELECTED VIDEO OUT

MAIN SIGNAL PROCESSING CIRCUIT

Chassis Block Diagrams

-4-

SYSTEM CONTROL

QXXAVC479P

C-CAPTION IN

IC Block Diagrams

-5-

IC201 < IF/Video/Chroma/Def. > LA76818A

VOL

DET

23456

AGC

VIF

8910

VCC 5V 11 12 13

BUS

PEAKING

CORING BLACK

STRETCH

SYNC

SEP

14 15

ABL

REST

CLAMP

OSD

CONTRAST

BRIGHT

16 17 18 19 20

CONTRAST

BRIGHT RGB

MATRIX

OSD

DRIVE/OUT-OFF

VCC 21 22 23

FSC/

SYNC SW

24 25 26 27

VER

RAMP HOR

VCCH

VCC

VER

C/D

HOR

OUT

PHASE

SHIFTER

AFC2

AFC1

VER

SEP

HOR

C/D

1/256

COLOR

CLAMP

LPF

ALC

CLAMP

DEMO

PAL

ACC

BPF

ON/OFF

DELAY

LINE

TRAP

AFT

VIDEO

DET

TRAP

LIM

AMP

BPF

SPLL

BPF

VIDEO

AMP IF

IDENT VIDEO

SW APC1 TINT

VXO DDS APC2 DC ADS.

CLAMP

VCO

1H DELAY

HOR

VCO

FBP

2829

32 1H

VCC

353637

CLMP

4445

CLMP

V/C VCC

4950

A2C

PLL

525354

Audio Output

FM Output/Selected

Audio Output

PIF AGC

RF AGC Output

PIF Input1

PIF Input 2

IF Ground

IF Vcc

FM Filter

AFT Output

Bus Data

Bus Clock

ABL

Red Input

Green Input

Blue Input

Fast Blanking Input

RGB Vcc

Red Output

Green Output

Blue Output

fsc output or C

Sync output

Vertical Output

Ramp ALC Filter

Horizontal/BUS Vcc

Horizontal Output

Horizontal AFC Filter

Flyback Pulse Input

VCO IREF

Clock (4MHz) Outupt

CCD Vcc

CCD Filter

CCD/Horizontal Ground

SECAM B-Y Input

(Cb Input)

SECAM R-Y Input

(Cr Input)

Chroma APC2 Filter

Clamp Filter

4.43 MHz Crystal

Chroma APC1 Filter

Selected Video Output

Video/Vertical/BUS Ground

External Video Input(Y-IN)

Video/Vertical Vcc

Internal Video Input (S-C IN)

Black Level Detector

Video Output

VCO Filter

VCO Coil 2

VCO Coil 1

APC Filter

Ext. Audio Input

SIF Output

SIF APC Filter

SIF Input

IC Block Diagrams

-6-

IC201 <IF System Block Diagram> LA76818A

11 12

BUS

Interface

SAW 5

PIF

In1

PIF

In2

IF In

30K

RF AGC

Out

120K

IF VCC

GND

VIF AMP

VIF 1 VIF 2 VIF 3

IF AGC

Drive

AGC 2ndIF

AGC

RF AGC

Delay

6bit

IF AGC

Def

1bit

(6 Vcc)/7

BUS

0.022u PIF

AGC

Data Clock

APC

Det

+π/4

-π/4

Snd

Det Amp

SIF.Out

Sound

Trap

Video

Det

Buzz

Canceller

50 APC

Filter

330

0.47u +

PLL Pull-in SW

BUS

Lock

Det

Video.Level

3bit

Amp

10p SIF.In

Sound

BPF

VCO.Coil

VCO

COIL1 VCO

COIL2

48 49

VIF

VCO Chroma

Counter

B/N

INV IF

Ident

OSC

C/D

Amp

SIF. Sys

2bit pre-

scaller

SIF

VCO

500K

BPF

SIF

APC

Filter

0.01u 1000p

53 LIM

AMP FM

Det

FM.Level

5bit

Chroma

C/D

APC

Det

500K

Det

BUS

Chroma

VCO

VIF

Counter

Reset

Pulse

VCO

Ident

VIF.Sys

2bit Phase

Detector

A.MUTE

1bit VOLUME

D/A

VOLUME

Filter

A.SW

1bit

Input

Select VOLUME

(ATT)

2.5V

Amp

FM Gain

1bit Deem-TC

1bit

De-

emph

FM Mute

1 bit

A.Fil.Def

1bit

VOLUME

7bit

VCO

Alignment

AFT 10 AFT

Vcc

100K

0.1u

VCO

Filter

0.47u

Audio.out

Audio in

10u

Video

Out

Filter

Out

0.01u

to BUS Line

IC Block Diagrams

-7-

IC002 < Audio AMP. > LA42052-E

PRE

GND

IN2

AMP

POWER

GND

IN1

RIPPLE

FILTER P.P

VCC

STANDBY

OUT2

12 OUT1

AMP

INPUT AMP. OUTPUT AMP.

THERMAL

PROTECTION

CIRCUIT

AMP AMP

AMP

REF AMP.

RIPPLE FILTER

BLOCK POP NOISE PREVENTION

BLOCK

INPUT AMP. OUTPUT AMP.

Thermal

Protection

+AMP

Pump

INVERTING

INPUT

Vcc

PUMP UP

OUT

GND

Ver. OUTPUT

OUTPUT

STAGE Vcc

NON INV.

INPUT

IC501 < Vertical Output > LA78040N, TDA9302H

10 11

LFLT VCO

PCINT1

PCINT2

PLINT

13 VCA LPF

FLT

COMPIN

Vcc

Analog Block GND

23NOISETC

SAPTC

14 15

VGR

IREF

765

I2C BUS I/F

Digital Block GND

SCL

SDA

SAPIND

NOISE

DET

SAPVCO

BPF

STIND

1/4 1/2

LPF

DeEm LPF

LPF

DeEm

AMP

(+4dB) LPF

24 25 22

SAPOUT

SAPIN

STIN

26 27 28

VEWGT

LPF

HPF

LOGIC

NRSW/FOMO/SAPC

VCA

21 9

SUBOUT

(L-R signal output)

MAIN OUT

(L+R signal output)

MATRIX

VE VCA

RMSDET

29 30 32 31 1

VETC

VEOUT

VCAIN

VCAWGT

VCATC

TREBLE OUT-L

SPECTRAL

34 33

FEXT1

TVSW

EXT1/EXT2/M1

SURR

SURROUND

BASS

TREB

BASS

TREBLE

TREB

VOL-L

VOL-R

VOLIN-L

LSOUT-L

LSOUT-R

VOL-R

VOLUME RIGHT

CHANNEL INPUT

TREBLE OUT-R

TREBLE FILTER-L

BASS FILTER-L

40 SURRTC

38 TVOUT-R

39 TVOUT-L

37 AUX2-L

(Left channel

external input)

FEXT2

INPUT PIN OF (L+R)

SIGNALFROM

MAIN OUT(PIN9)

(+6dB)

WIDEBAND

"STEREO"

"NOISE"

"SAP"

"PONRES"

ATT/ATTSW

BASS FILTER-R

(Stereo block

PLL loop filter

integrating

pin)

(Pilot cancel

circuit loop filter

intergrating pin)

(Audio multiplexing

signal input)

AUX2-R

(Right channel

external input)

TREBLE FILTER-R

AUX1-L(Left channel

external input)

AUX1-R(Right channel

external input)

(Band gap reference

output)

(Sap FM detector

output)

(Input of L-R signal

from SUBOUT)

(Input of SAP signal)

(Variable de-

emphasis

integrating pin)

(Variable de-emphasis

output pin)

IC3401 < MTS Decoder, Audio Control & Switch > CXA2134QP

-8-

Service Adjustments

S1.00100111 S2.11111000

ADDRESS DATA

02 H-PHA 08

Item No. Item Data value

General

This set has an On-screen Service Menu system includ-

ed in the CPU thar allows remote operation for most of

the service adjustments.

Service Adjustment-1

1. Enter the Service Menu

While pressing the MENU button on the televi-

sion, press the Number Key 2on the remote control

unit.The Service Menu now appear.

2. Service Adjustments:

Press the CHANNEL UP or CHANNEL DOWN

button on the remote control handset to select the

desired service menu item you want to adjust.

Use the VOLUME + or

to adjust the data.The + or

button will increase or decrease the data

sequentially.

3. Exit from the Service Menu

Press the MENU button to turn off the Service Menu

display.

The data which is set in the service mode is stored

into the memory IC automatically.

[ Service Mode Display ]

[ Entering the Service Menu ]

VOLUME +

VOLUME

CHANNEL UP

CHANNEL DOWN

[ Service Adjustment ]

[ Exit from the Service Menu ]

-9-

Service Adjustments

No. Item Initial value Range Description

01 RFAGC 06 00~63 RF AGC adjustment

02 H-PHA 08 00~31 H-PHASE adjustment (50Hz)

03 V-POS 32 00~63 Vertical position adjustment (50Hz)

04 V-SIZ 54 00~127 Vertical size adjustment (50Hz)

05 V-SCO 17 00~31 Vertical-S compensation (50Hz)

06 VLIN 15 00~31 Vertical linearity adjustment (50Hz)

07 H-P60 +4 -16~+15 Difference value of H-PHASE adjustment (60Hz)

08 V-P60 0 -32~+31 Difference value of V-POSITION adjustment (60Hz)

09 V-S60 +1 -64~+63 Difference value of V-SIZE adjustment (60Hz)

10 VSC60 0 -16~+15 Difference value of Vertical-S compensation (60Hz)

11 VLI60 +1 -16~+15 Difference value of Vertical linearity adjustment (60Hz)

12 OSDHP 30 01~255 OSD horizontal remark position

13 OSDC 50 00~127 OSD contrast

14 V-SCP 07 00~07 V-SIZE COMP (50Hz)

15 SBIAS 70 00~127 Sub Bias adjustment

16 RBIAS 00 00~255 Red Bias adjustment

17 GBIAS 00 00~255 Green Bias adjustment

18 BBIAS 00 00~255 Blue Bias adjustment

19 RDRIV 63 00~127 Red Drive adjustment

20 GDRIV 07 00~15 Green Drive adjustment

21 BDRIV 63 00~127 Blue Drive adjustment

-- -- --

White balance (a lateral line)

23 DRV

-- --

Brightness and dark of White balance adjustment

24 B-YD 10 00~15 B-Y DC Level

25 R-YD 10 00~15 R-Y DC Level

26 B-YND 0 -16~+15 Difference value of NTSC B-Y DC Level

27 R-YND 0 -16~+15 Difference value of NTSC R-Y DC Level

28 G-YA 00 00,01 G-Y Angle

29 RBGB 08 00~15 R-Y/B-Y Gain Balance

30 RBAG 08 00~15 R-Y/B-Y Angle

31 G-YAN 00 00,01 Difference value of NTSC G-Y Angle

32 RBGBN 0 -8~+7 Difference value of NTSC R-Y/B-Y Gain Balance

33 RBABN 0 -8~+7 Difference value of NTSC R-Y/B-Y Angle

34 COGV 01 00~03 Coring gain

35 BLK 03 00~03 BLK. STR. Start (W/Defeat)

36 BLKG 03 00~03 BLK. STR. Gain

37 BRTA 00 00, 01 BRT. ABL Defeat

38 BRST 00 00, 01 Mid. Stp. Defeat

39 BRTH 00 00~07 Bright. ABL.Threshold

40 WPL 00 00~03 WPL Ope. Point (W/Defeat)

41 YGAM 00 00~03 Y Gamma Start

42 PORW 00 00, 01 AV Mode Pre/Over SW

43 PORS 02 00~03 AV Mode Pre/Over-shoot adjustment

44 RFCO 0 00~03 Difference Value of RF Corring Gain

45 PORWN 01 00, 01 RF Pre/Over SW

46 PORSN 03 00~03 RF Pre/Over-shoot adjustment

47 TINT 0 -16~+15 Tint

48 SHRF 0 -16~+15 Difference Value of RF Sharpness

49 TEXC 08 00~127 OSD Text Contrast

50 AUFL 00 00, 01 Auto. Fresh

On-screen Service Menu

Following table shows the initial values which have been stored in the CPU ROM, and items for the service

adjustments.

To be continued.

-10-

Service Adjustments

Important Notice:

Do not attempt to adjust service adjustments not listed on below otherwise it may cause loss of performance and for

correct operation.

No. Item Initial value Range Description

51 COOP 07 00~07 Colour Killer

52 Y-APF 01 00, 01 Y-APF Select

53 DEEM 00 00, 01 De-emphasis TC

54 V-LVL 04 00~07 Video Level

55 FMLVL 16 00~31 FM Level

56 TTEST 00 00~07 Trap Test

57 IFOM-S 00 00, 01 Over Mod. SW

58 IFMN-S 00 00, 01 Audio Monitor SW, Monitor/FM

59 IFTRPS 01 00, 01 IC Built-in SIF Trap ON/OFF

60 IFMLVL 136 00~255 Video Level Coarse Adjustment & Mod. Operating Dot Setting

61 VBSW 00 00, 01 VBLK SW

62 FBTS 00 00, 01 FBP Blanking SW

63 HBLKL 06 00~07 H-Blanking Control Left

64 HBLKR 04 00~07 H-Blanking Control Right

65 AFCRF 00 00, 01 Adjustment of AFC Gain & Gate (RF)

66 VSURF 00 00, 01 Adjustment of Vertical Sync. Separation Sensitivity (RF)

67 CDMRF 00 00~07 Vertical Count Down Loop Adjustment (RF)

68 AFCAV 00 00, 01 Adjustment of AFC Gain & Gate (AV)

69 VSUAV 00 00, 01 Adjustment of Vertical Sync. Separation Sensitivity (AV)

70 CDMAV 00 00~07 Vertical Count Down Loop Adjustment (AV)

71 HLK-T 00 00, 01 H-lock, V-Det. (RF)

72 HLK-V 00 00, 01 H-lock, V-Det. (AV)

73 VCO-SW 00 00, 01 C. VCO Adjustment SW

74 VCOADJ 03 00~03 C. VCO Adjustment

75 GRAY 00 00, 01 Gray Mode

76 CROSS 00 00~03 Cross Black/White

77 HL-SW 01 00, 01 Half Tone ON/OFF

78 HL-TON 00 00~03 Half Tone Level

79 AVNCON 64 00~127 Contrast (No Signal in AV)

80 AVNBRI 64 00~127 Brightness (No Signal in AV)

81 POMT 12 00~127 Power Mute Time

82 CHMT 12 00~31 Channel Mute Time

83 SYST 03 00~255 System-N

84 RELAY 80 00~255 Power Relay Time

85 CCD 31 00~31 Horizontal Remark Position Compensation Register

86 TVAVTM 00 00~255 AV/TV Mute Time

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