Sanyo C29FS51 Manuel utilisateur

SERVICE MANUAL Colour Television

Product Code: 113020204

Original Version

Chassis Series: LB6-A

BG4E

FILE NO.

Model No. C29FS51

Service Ref. No.

(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 speci-

fication 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

Input Terminals

AV1 (Video): Composite Video Input (Phone Jack) x 1

S-Video Input (Separated Y/C) DIN 4-pin Jack x 1

AV1 (Audio):L/R Stereo Input (Phone Jack) x 1 set

AV2 (Video):Composite Video Input (Phone Jack) x 1

AV2 (Audio):L/R Stereo Input (Phone Jack) x 1 set

DVD (Video): Component Y, CB, CRInput (Phone Jack) x 1 set

DVD (Audio): L/R Stereo Input (Phone Jack) x 1 set

Output Terminals

Video Monitor Output: Phono jack x 1

Audio Monitor Output: L/R Stereo Output (Phone Jack) x 1 set

Headphone Jack: Mini stereo jack x 1

Sound Output (RMS) . . . 5W + 5W

Speaker . . . . . . . . . . . . . . 6cm x 12cm x 2 pcs.

Dimensions . . . . . . . . . . . 750(W) x 590(H) x 416.5(D) mm

Weight . . . . . . . . . . . . . . . approx. 36.5 Kg

Specifications subject to change without notice.

Contents

-2-

SafetyNotice ........................................................................... 2

ChassisBlockDiagram ................................................................... 3

ICBlockDiagrams..................................................................... 4-8

ServiceAdjustments................................................................... 9-18

CabinetPartsList....................................................................... 19

ChassisElectricalPartsList............................................................ 20-27

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

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, adjust-

ment covers or shields, barriers, isolation resistor-

capacitor networks etc.. Before returning any

television to the customer, the service techni-

cian 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 hazard-

ous 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 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-

SIGNAL PROCESSING CIRCUIT

P10/21

Antenna

CRT DRIVE

TRC

G/R

HV/Fo/Sc

R/C PRE-AMP

TUNER BUS H-OUT DY-H

IF DY-V

(LV76113) HORIZ-DRIVE HORIZ-OUT

SAW TU

Ere

FBP

FNI

SUSOC

AV2/DVD/S-VIDEO C VIDEO

V-

-14187AL

(

+VOEDIV

UOROTINOM

S-VIDEO Y/AV1-V TU

O-

VOEDI

PM33

52M

AV1/AV2/DVD AUDIO IN AUDIO BUS

MONITOR OUT AUDIO AUDIO L/R

SPEAKER(L)

SIF OUT

)307

(

-50

224AL

(R/

DVD

/2VA

PFB2504CT

TUPN

IDUA

O-

OIDU

ATUP

TUO

)NEK

(V0

22C

SPEAKER(R)

POWER

LA7846NZ

)

+28V

+32V

+5V

+8V

-16V

+5VRC

5VRC

+28V

+140V

10V

+16V

+8V

IC Block Diagrams

-4-

IC601 POWER SUPPLY IC (STRW6754)

FUNCTIONAL BLOCK DIAGRAM

IC Block Diagrams

-5-

IC201 < IF/Video/Chroma/Def./CPU > LA76113

-6-

IC Block Diagrams

IC501<Vertical.Output> LA78141

IC001<AUDIO AMP> LA42205

-7-

IC Block Diagrams

LA72703 BTSC Decoder - Reference Apprication -

10 11 12

Slave Address = 80h ( 1000 000* ) :Pin8=OPEN/GND

Slave Address = 84h ( 1000 010* ) :Pin8=H

Vcc 5V

65 7

21 3

2324 22 15 14 13

161719

20 18

MATRIX

MODE

OUT

REGULATOR

+ ++

4.5M

BPF

LPF

SIF DEMOD

SAP BPF

SAP

DEMOD

L-R

DEMOD ST/SAP

LPF

-6dB

PILOT

CANCELLER

STEREO

PLL

PILOT

DET

PILOT

LEVEL DET

IIC

DECODE

SYSTEM

CONTROL

Offset

Cancell

dbx processor

SAP

DET

4u7 4u7 22u 4u7

OUT(L) OUT(R)

MODE

Monitor

2u2

0.1?

4k7

MUTE

L+R L-R/SAP

SAP

Address

Control

GND

MUTE

Wide RMS DET

Spectral DET

Spectral In

Offset Cancel

0.1u

4u7

1u to

0.33u

SIF SIGNAL

from Tuner

Address

Control IIC

DATA

IIC

CLOCK

2u2 22u

Spectral RMS

DET

100u

0.1u

47u

10u

33n 33n

560k

LPF

IC3401　LA72703

-8-

IC Block Diagrams

IC1002 NJM2533M

IC1001 TC4052BF

-9-

LB6A VER1.14

NO. NAME DATA

00 RFAGC 17H XX010111

1.11101111 2.11111000

Item No.

Status Register Bit Allocations Data value

General

This set has an On-screen Service Menu system included in the CPU that allows remote operation for most of the

service adjustments.

2. Service Adjustments:

Press the CHANNEL UP/DOWN button on the remote

control handset to select the desired service menu

item you want to adjust.

Use the VOLUME + /

button 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 ]

Service Adjustment-1

1. Enter the Service Menu

While pressing the MENU button on the television, press the Number Key 2 on the remote control unit.

The Service Menu now appear.

IC802 (EEPROM) Replacement

When IC802 (EEPROM) is replaced, IC201 (CPU) will automatically write the initial reference data into IC802 for basic TV operation.

However, the bus data should be checked and some bus data should be set up before attempting the service adjustments. (See

pages 9 ~ 11 for detailed information.)

Service Adjustments

-9-

VOLUME +

VOLUME

CHANNEL UP

CHANNEL DOWN

Item Name

-10--10-

Service Adjustments

On-screen Service Menu

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

When IC802 (EEPROM) is replaced, check the bus data to confirm they are the same as below. The shaded menu should be

checked and be set up or readjusted according to the procedures described in the following pages.

Initial Setup Data marked with an ∗should be changed from Initial Value Data.

No Item Description Initial Data Range

0 RFAGC Align RF AGC threshold 17 00～3F

1 HPHA Alignsynctoybackphase 10 00～1F

2 VSIZE Align vertical amplitude 72 00～7F

3 V DC Align vertical DC bias 22 00～3F

4 VSIFT Align vertical position 08 00～0F

5 V LIN Align vertical linearity 0F 00～1F

6 V SC Align vertical S-correction 16 00～1F

7 VCOMP Align vertical size compensation 07 00～07

8 EWDC Align East/West DC bias 33 00～3F

9 EWAMP Align East/West amplitude 06 00～3F

10 EWTIL Align East/West Trapezoid 32 00～3F

11 EWTOP Align East/West Top corner correction 01 00～0F

12 EWBOT Align East/West Bottom corner correction 02 00～0F

13 EWCSW Select control range for Corner correction 01 00～01

14 HSCMP Align horizontal size compensation 07 00～07

15 HBL Left H-Blanking Control 04 00～07

16 HBR Right H-Blanking Control 05 00～07

17 HPH60 Alignsynctoybackphase(60Hzdata)03 00～3F

18 VSZ60 Align vertical amplitude (60Hz) FF 00～FF

19 VDC60 Align vertical DC bias (60Hz) 00 00～7F

20 VSF60 Align vertical position (60Hz) 1D 00～1F

21 VLI60 Align vertical linearity (60Hz) 00 00～3F

22 VSC60 Align vertical S-correction (60Hz) 00 00～3F

23 VCO60 Align vertical size compensation (60Hz) 00 00～0F

24 EWD60 Align East/West DC bias (60Hz) 01 00～7F

25 EWA60 Align East/West amplitude (60Hz) 7F 00～7F

26 EWT60 Align East/West trapezoid (60Hz) 01 00～7F

27 EWB60 Align East/West Bottom corner correction (60Hz) 02 00～1F

28 EWP60 Align East/West Top corner correction (60Hz) 03 00～1F

29 CSW60 Select control range for Corner correction 00 00～01

30 CMP60 Align horizontal size compensation 03 00～0F

31 T DIS Disable the Test SW & enable Audio / Video Mute SW 01 00～01

32 HFREQ Align ES Sample horizontal frequency (MP is adjusted in the wafer line.)

40 00～7F

33 AFCG Selecthorizontalrstloopgain&H-syncgatingon/off00 00～01

34 AMUTE Disable audio outputs 00 00～01

35 VMUTE Disable video outputs 00 00～01

36 VSZ75 Enable 75% vertical size mode 00 00～01

37 SKILL Force free-run mode 00 00～01

38 VKILL Disable vertical mode 00 00～01

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