Sanyo CE32FWH1F-C Manual de usuario

Service Manual

Colour Television

PRODUCT CODE:111352710

ORIGINAL VERSION: Chassis No. WB5-B

Part No. SKSM0425 C2MLL NOVEMBER 2000

Model No. CE32FWH1F-C

Service Ref. No. CE32WFH1F-C-00

Give complete “SERVICE REF. NO.” for parts

order or servicing, it is shown on the rating sheet

on the cabinet back of the TV set.

Note

This TV receiver will not work properly in foreign

countries where the television transmission system

and power source differ from the design

specifications. Refer to the specifications for the

design specifications.

CE32FWH1F-C

CONTENTS

Safety precautions/Specifications..........................................................................................................2

Block Diagrams..................................................................................................................................3 -6

Cabinet Disassembly ............................................................................................................................7

Adjustment and Repair Procedures................................................................................................8 - 13

Component Locations ..................................................................................................................14 - 15

CPU Functions..............................................................................................................................16 - 18

IC block diagrams ........................................................................................................................19 - 26

Pin description of semi-conductors......................................................................................................27

Parts description and reading of schematic diagram ..........................................................................28

Cabinet Parts List/TV Stand Parts List ................................................................................................29

Electrical Parts List ......................................................................................................................30 - 53

WB5-B chassis

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, 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.

SAFETY PRECAUTION

X-RADIATION PRECAUTION

The primary source of X-RADIATION in the 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 adjustment 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 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 .

Power source AC 220~240V 50Hz

Television system System B/G, I, L/L’, D/K.

Colour system PAL/SECAM/NTSC4.43 (PAL/NTSC4.43/NTSC3.58 in AV mode)

Channel coverage UHF: #21-#69

VHF: E2-E12, F2-F10, R1-R12

CATV: X, Y, Z, S1-S41, B~Q

Aerial input impedance 75ohm

AV terminal

21-pin terminals AV1: CENELEC Standard with RGB

AV2: CENELEC Standard with S-inputs

AV3: CENELEC Standard

Front AV terminals AV3: RCA Terminal, Video and Audio(L/R) Input

Sound output 12 x 2

Picture tube(inches) 32

Dimensions(WxHxD mm) 880 x 583.5 x 580.5

Weight 54.6Kg

SPECIFICATIONS

WB5-B chassis

This is a basic diagram for all models and therefore differs slightly from the actual block diagram.

ROM

47 46 45 4419

12/6

13/5

910

12/6

13/5

910

IC804

BUS SW

14 3

IC808

PCF8574

IC807

PCF8574

MUTE ON/OFF

3L-Y/C SEP ON/OFF

PAL/NTSC SW

AV3 SW

AV2 SW

AV1 SW

HOLD DOWN

POWER ERROR

I/O

EXPANDEDER

SCART1

AV1

SCART2

AV2

SCART3

AV3

FRONT

AV4

MONITOR-

OUT SC1 V-IN

SC2 V-IN

SC2Y-IN

SC2 C-IN

IC1201

TV-OUT

R/G/B/BLK

IC1202

NJM2284

SCL/SDA

IF/VIDEO/

CHROMA/

MARTIX

39 34 18 20 21 47

CVBS-OUT

Y-OUT

C-OUT

CVBS-2-IN

BLK

Aerial

Tuner X132

SAF

Q131

IC7101

3L-Y/C

SEP

VYC

171 72

IC7201

SCAN

CONVERTER

IC101

911 1416

2Y-OUT

2U-OUT

2V-OUT

IC201

MATRIX

DEFLECTION

IC202

24 844

38 37 36 35 3

10 11

SDA/SCL

SCL/SDA

IC801

CPU

RGBBLK

OSD

BGR

BLK

IC711

IC721

IC731

BVIDEO-OUT

GVIDEO-OUT

RVIDEO-OUT

358

RCRT

IC501

H-DRIVE

E-W

Q402

T401A

H-DRIVE

Q731

Q721

Q711

V DRIVE -

V DIRVE+

PCC

CONTROL

H-OUTPUT

Q411

POWER ERROR

Q1803

Q1904

CS-SW

IC809

FOCUS

SCREEM

T402

FLYBACK

D.Y

VERT

OUTPUT

653

VM CIRCUIT VM COIL

Q307

IC301

L302

Q301

SELECTOR

FRONT AV4/AV3 SW

IC803

FRONT AV-IN

SCL/SDA

IC806

BUS SW

SCL/SDA

Q801

Q803

Q804

Q802

I2C BUS

2V-OUT

2H-OUT

MEMORY

SCL/SDA SCL/SDA

Q366/

Q378

IC7202

FIELD

MEMORY

IC7203

FIELD

MEMORY

TV-OUT H.V

IC802

Depend on models

Outline

[Chassis Block Diagrams]

Fig.-1

CHASSIS DESCRIPTION

4WB5-B chassis

IC101

IF/VIDEO/

CHROMA

IC351

MATRIX

IC241

SHARPNESS

IC801

CPU

DIGITAL

SCAN

CONVERTER

CIRCUIT

SELECTOR

CIRCUIT

SIF

Filtering

circuit

Buffer

18 20 21

30-38

Y, U, V 2(Y, U, V)

H-Sync

V-Sync

CVBS (TeleText)

2HD

2VD

External RGB in

(AV1 In)

SAW Filter

IF Stage

Video-in

C-in

Y-in

AV1

AV2

AV3

AV4

358

IC731

R-VIDEO OUT

358

IC721

G-VIDEO OUT

358

IC711

B-VIDEO OUT

RGB OSD

DISPLAY from CPU

Picture Tube

Video signal rooting

SCART1

AV1

SCART2

AV2

SCART2

AV3

FRONT

AV4

11, 16

1, 14

L/R SC3-IN

IC1201

MM1313

22,24

32 L

SPEAKER

HEADPHONE

JACK

Q001

IC807

PCF8574

IC3451

TDA9875

IC001

TA8200 AUDIO

AMP

711 12

MUTE

24 52

SCL/SDA

DIGITAL

TV SOUND

PROCESSOR

L/R

TV-OUT

MONITOR

OUT SC1-IN

SC2-IN

L/R IC1202

NJM2284

Q1215

Q1217

Q1223

Q1224

FROM

CPU

L/R

TV-IN

SIF

MONO

Tuner Q131

X131

SAF

Aerial

L/R

IF/VIDEO/

CHROMA

64 5

IF/VIDEO/

CHROMA

I2CBUS

SELECTOR

I/O

EXPAMDER

DIGITAL SOUND PROCESSOR

IC101

TDA9321 IF/VIDEO/

CHROMA

IC3101

AK7706VYM

DSP

IC3102

LC3564BM

Audio signal rooting

Fig.-2

Fig.-3

CHASSIS DESCRIPTION

WB5-B chassis

IC801

CPU

IC807

I/O Expander

IC802

ROM

CVBS input

Q1652

RL1601

Power

Supply

Circuit

OSD

RGB Drive

H-Sync

V-Sync

61 60 48 49 44-47 42 42

RC Pre-amp.

IC804

Bus-SW. IC806

Bus-SW.

I2C Bus

SDA/SCL

I2C Bus

SDA/SCL-1

MEMORY

I2C Bus

SDA/SCL-2

SDA/SCL-3

19 20 21 22 23 24

AC RELAY

Q1671

RL1602

Degausing

Coild

DC RELAY

IC807

I/O Expander 3L-Y/C ON/OFF

HOLD DOWN

MUTE ON/OFF

PAL/NTSC SW

AV3 SW

AV2 SW

AV1 SW

POWER ERROR

SDA/SCL

DIGITAL

SCAN

CONVERTER

CS SW.

IC421

H-Drive

Q401-Q402 T401

Drive Trans

Q411

H-Output

IC501

V-Output <LA7846>

56 3

V-Drive +

V-Drive -

Q421/Q425

EW-Out

Q451 Q452

Vert.

Coil

Horiz.

Coil

Deflection

Yoke

T402

FlyBack Trans.

L461/L462

C421

Pcc Control

IC202

DEFLECTION

2H-Sync

2V-Sync

Screen Width Control

Depend on models

System control

Deflection circuit

Fig.-4

Fig.-5

CHASSIS DESCRIPTION

6WB5-B chassis

IC7202

Video Memory

IC7203

Video Memory

IC7204

PLL

<READ>

IC7201

DOUBLE SCAN CONVERTER

IC7205

PLL

<WRITE>

LPF

Q7301-Q7304

LPF

Q7311-Q7314

LPF

Q7321-Q7324

LPF

Q7371-Q7374

LPF

Q7361-Q7364

LPF

Q7351-Q7354

IC7341

Inverter

2VD

2HD

100

717068635953

Digital scan circuit

100Hz Digital Scan Converter circuit (available only 100Hz models)

100Hz converter circuit consists of the following ICs.

- TC90A36F, IC7201

Field Progressive Converter

- MSM518221A, IC7202, IC7203

Video Memory

- TLC2932I, IC7205

PLL (Phase Locked Loop)

- MC74HC04AFP, IC7341

invertor

The Y-signal output from IC101 is sent to pin 85 of IC7201<TC90A36F>, field progressive

converter, after controlling the amplitude level and band-pass limiting by the circuit consist of

Q7301, Q7302, Q7303, Q7304 and 8MHz LPF. The U/V-signal are also controlling the amplitude

level and band-pass limiting by the circuit consist of Q7311, Q7312, Q7313, Q7314, Q7321,

Q7322, Q7323, Q7324 and 4MHz LPF respectively. The U-signal is sent to pin 90 of IC7201and

the V-signal is sent to pin 92 of IC7201. The HD signal is sent to pin 63 of IC7201 with positive

polarity through IC7341 for shaping the waveform. The VD-signal is sent to pin68 of IC7201 with

negative polarity through IC7341.

The Y-signal input to IC7201 is converted from A to D in 8bit and output from pins 18 to 25 of

IC7201 to pins 1 to 4 and 24 to 27 of IC7203<MSM51822A>, video memory, for writing.

[Digital Scan Operation]

Fig.-6

CHASSIS DESCRIPTION

WB5-B chassis

100Hz Digital Scan Converter circuit (available only 100Hz models)

100Hz converter circuit consists of the following ICs.

- TC90A36F, IC7201

Field Progressive Converter

- MSM518221A, IC7202, IC7203

Video Memory

- TLC2932I, IC7205

PLL (Phase Locked Loop)

- MC74HC04AFP, IC7341

invertor

The Y-signal output from IC101 is sent to pin 85 of IC7201<TC90A36F>, field progressive

converter, after controlling the amplitude level and band-pass limiting by the circuit consist of

Q7301, Q7302, Q7303, Q7304 and 8MHz LPF. The U/V-signal are also controlling the amplitude

level and band-pass limiting by the circuit consist of Q7311, Q7312, Q7313, Q7314, Q7321,

Q7322, Q7323, Q7324 and 4MHz LPF respectively. The U-signal is sent to pin 90 of IC7201and

the V-signal is sent to pin 92 of IC7201. The HD signal is sent to pin 63 of IC7201 with positive

polarity through IC7341 for shaping the waveform. The VD-signal is sent to pin68 of IC7201 with

negative polarity through IC7341.

The Y-signal input to IC7201 is converted from A to D in 8bit and output from pins 18 to 25 of

IC7201 to pins 1 to 4 and 24 to 27 of IC7203<MSM51822A>, video memory, for writing.

The U/V-signals are converted in progressive at multiplexer and converted from A to D in 8 bit,

and then applied from pins 34 to 41 of IC7201 to pins 1 to 40 and 24 to 27 of IC7203

<MSM518221A>, video memory, for writing.

The signals are wrote down to memory IC by 16MHz clock. It means the number of sampling are

1024 per 1H. The clock signal for writing is obtained by performing the phase comparing AFC

control to the HD-signal. The phase comparing AFC control performs at IC7205<TLC2932I>, PLL,

and IC7201. The 32MHz clock signal generated here is supplied from pin 3 of IC7205 and sent to

pin 61 of IC7201. The clock signal divided to 16MHz in the IC is output to pin 31 and supplied to

pins 6 of IC7202 and IC7203.

The reading is performed by 32MHz clock supplied from pin 28 of IC7201. In this case, the

number of sampling is 2048 per 1H. This read clock signal is obtained by performing the

frequency comparing AFC control to the input HD-signal. To avoid the skew distortion, the phase

comparing AFC control is not employed. The frequency comparing AFC control is performed at

IC7204<TLC2932I>, PLL, and IC7201. The 32MHz clock signal generated here is output from pin

50Hz 100Hz

AA' BB' C

A' = A, B'= B

(a) Normal Scan (b) Double Scan

Fig.-7

CHASSIS DESCRIPTION

8WB5-B chassis

100Hz Digital Scan Converter circuit (available only 100Hz models)

100Hz converter circuit consists of the following ICs.

- TC90A36F, IC7201

Field Progressive Converter

- MSM518221A, IC7202, IC7203

Video Memory

- TLC2932I, IC7205

PLL (Phase Locked Loop)

- MC74HC04AFP, IC7341

invertor

The Y-signal output from IC101 is sent to pin 85 of IC7201<TC90A36F>, field progressive

converter, after controlling the amplitude level and band-pass limiting by the circuit consist of

Q7301, Q7302, Q7303, Q7304 and 8MHz LPF. The U/V-signal are also controlling the amplitude

level and band-pass limiting by the circuit consist of Q7311, Q7312, Q7313, Q7314, Q7321,

Q7322, Q7323, Q7324 and 4MHz LPF respectively. The U-signal is sent to pin 90 of IC7201and

the V-signal is sent to pin 92 of IC7201. The HD signal is sent to pin 63 of IC7201 with positive

polarity through IC7341 for shaping the waveform. The VD-signal is sent to pin68 of IC7201 with

negative polarity through IC7341.

The Y-signal input to IC7201 is converted from A to D in 8bit and output from pins 18 to 25 of

IC7201 to pins 1 to 4 and 24 to 27 of IC7203<MSM51822A>, video memory, for writing.

The U/V-signals are converted in progressive at multiplexer and converted from A to D in 8 bit,

B-Y9

Y0Y1Y2Y3Y4

1024 sampling

sampling clock= 16MHz = 1024/1 horiz.

Y0Y1Y2Y3Y4

R-Y0

B-Y0B-Y1B-Y2B-Y3B-Y4

R-Y4

R-Y3

R-Y2

R-Y1R-Y0B-Y1R-Y2B-Y3R-Y4

Write

Time divided multiplex

Y0Y1Y2Y3Y4

R-Y0B-Y1R-Y2B-Y3R-Y4

Y5Y6Y7Y8Y9

B-Y5R-Y6B-Y7 R-Y8

R-Y0

B-Y1

R-Y2

B-Y3

R-Y4R-Y4

B-Y5

R-Y6

B-Y7

R-Y8R-Y0

B-Y1B-Y3

R-Y2

B-Y7

R-Y6

B-Y9

R-Y8

B-Y5B-Y9

2048 sampling

Double

Scan

Converting

sampling clock = 32MHz = 2048/1 horiz.

Read out in double clock

(a) Write (b) Read

(c)

Fig.-8

CHASSIS DESCRIPTION

WB5-B chassis

CONVERTER TRANS

IC6111

SWITCHING

54321

C605

Rectifier

D601

D613

AC SW601

MAINS SW T1651

RL160

RELAY

RC14V

5V RC5V

IC1651 IC676

12V

D1659

D1658

D1651

D1653

Q611 Q621

R647

IC631

33V

140V

14V

-18V

7.5V

27V

D636

D635

D634

D631

D633

D632

D651

Q1652

IC674

5VTV

Vertical

Deflection

V.Def

200V

T402A

FLYBACK TRANS

T403

CHOKE TRANS

HighVoltage

FocusVoltage

ScreenVoltage

HOLD

DOWN

CRT

Heater

POWER ON/OFF

ON:HI

RELAY

IC807

I/O EXPANDER

414

IC807

I/O EXPANDER

Q1804

R1809

D1803 D1804

Q1803

D649

D292 D294

Q1806

R1816

HOLD DOWN

DETECTION

HIGH VOLTAGE &

POWER FAIL

DETECTION

D433

D437

D438

DAF

Q411

Q572

D646

D647

D638

D637

Q644

Q631

IC673

IC672

IC671

8VTV

9VTV

12VTV

D672

D677

POWER FAILURE

DETECTION

8V Reg

9V Reg

12V Reg

D679

5V Reg

12V Reg

D652 D653

D432

D436

20,19

1514

9,10

5,6

T611 CPU

IC801

23 24

C BUS

SCL/SDA

H-OUTPUT

140V Reg

60V

200V

D431

Video Out

D674

Power Supply Lines

Power Failuer Detection Lines

Power supply & Protection circuit

Fig.-9

CHASSIS DESCRIPTION

10 WB5-B chassis

DISASSEMBLY

CABINET BACK DISASSEMBLY

1. Remove 10 screws (A) and 3 screws (B)

2. Pull out the cabinet back backward.

AV1

AV2

AV3

ANALOGUE

ANT.75Ω

(A)

(A) (B)

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