Sanyo CE21C6-C Bedienungsanleitung

Part No. SKSM0560 C5KTV MAY 2002

Service Manual

Colour Television

PRODUCT CODE: 111360815

ORIGINAL VERSION: Chassis No. EB6-D

Model No. CE21C6-C

Service Ref. No. CE21C6-C-00

Give complete “SERVICE REF. NO.” for parts

order or servicing. It is shown on the rating plate

at the cabinet back of the unit.

Note

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 on

page 2.

CONTENTS

Safety precautions ..........................................................................................................................................2

Chassis Diagrams............................................................................................................................................3

Disassembly ....................................................................................................................................................4

Service adjustments [Option Setting] ..............................................................................................................5

Service adjustments [Service Adjustment]-[Adjustment] ..........................................................................6 -10

CPU port functions ........................................................................................................................................11

IC block diagrams ..................................................................................................................................12 - 13

Pin description of semi-conductors................................................................................................................14

Parts description and reading in schematic diagram ....................................................................................15

Cabinet parts list ............................................................................................................................................16

Electrical parts list ..................................................................................................................................17 - 23

CE21C6-C

Please use Schematic Diagram SKP20339 with

this manual.

EB6-D 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 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 .

SPECIFICATIONS

Power source AC 220~240V 50Hz

Television System B/G, D/K

Colour system PAL/NTSC4.43 on Air

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

Channel coverage VHF: E2-E12, R1-R12

UHF: 21-69

CATV: X, Y, Z, S1-S41

Aerial input impedance 75ohm

AV terminals

AV1: CENELEC Standard

Input: Composite video, RGB and audio-L/R

Output: TV-output with composite video and audio-L/R

AV2: CENELEC Standard

Input: Composite video, S-VHS and audio-L/R

Output: Monitor-output with composite video and audio-L/R

Sound output 5.0 x 2

(continuous) (watts)

Picture tubes (Inches) 21

Dimensions (WxHxD) 612 x 476 x 482

Weight 21 kg

3EB6-D chassis

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

1 5

7 10

SP902

SPEAKER

IC001

AUDIO-OUT

IC201

IF/VIDEO/CHROMA/DEF

IF-IN X132

A101

TUNER

SCL

SDA

L171

Pix

Video-Out

SIF-OUT

K1002

SCART SC2

K1001

SCART SC1

BLK/R/G/B-IN

SCL

SDA

CRT

HEATER

200V

Q701

Q711

Q721

GPICTURE

TUBE

H.V

FOCUS/SCREEN

T451 FLYBACK

Q431

Q430

Q432

H-OUTPUT

D.Y

V-OUT

V-FB

H-OUT

IC501

V-OUTPUT

IC1201

AV-VIDEO-SW

IC1202

C-SW

BLK

MUTE

IC801

CPU

IC3451

NICAM/

STEREO

RC-IN

A1901

RC RECEIVER

KEY-IN

KEY SW

SDA

SCL

SDA

SCL

IC803

MEMORY

PROTECT

POWER

D641

IC642

D647

5V-1

24V

IC643

Q661

Q651

Q682

Q685

25V

150V

Q641

Q686

D615

Q611

SW901

D603-D606

C607

Q613

Reg.

C-IN

Y-IN Video/Y-IN

Video/Y-Out

Video-IN

SYNC-IN

R/G/B-OUT

T611

CONVERTER

D637

D646

IC641

Q666

AERIAL

60 61

6918

731

Outline

Fig.-1

CHASSIS DIAGRAMS

EB6-D chassis

DISASSEMBLY

CABINET BACK DISASSEMBLY

1. Remove 5 screws(A) to take the cabinet back off.

(A)

5EB6-D chassis

SERVICE ADJUSTMENTS

To enter the Option Mode

+ Press and hold the F/OK button on the remote control and P▼button on the front panel of the TV. The option

window will appear on the screen.

To set the option mode

+ Highlight the desired option item by using the P▲or P▼ button .

+ To switch the option mode, use the Volume - (LEFT) or Volume + (RIGHT) button.

+ The data which is set in the option mode is stored into the memory IC automatically.

Following table shows the available option items and default setting mode.

Exit from the Option Mode

+ Press the RECALL button on the remote control.

Option Mode Mode Description & Note

ON-TIMER ON or OFF On-timer available, default “ON”

Wel. Text ON or OFF Display message when first set up, default “ON”

P&P ON or OFF Plug & Play mode, default “ON”

SORT MODE Tuning Tuning mode, default “Tuning”

or Sorting

Destination BG, BG/DK, SECAM Destination option ,default “BG/DK”

I-UK or I-IRE

3D Surround ON or OFF 3D Surround available, default “ON”

2 step mute ON or OFF Mute mode option, default “OFF”

AV3 mode ON or OFF Front AV mode option, default “ON”

ONTIMER ON

Wel.TEXT ON

P&P ON

SORT MODE Tuning

Destination BG

3D Surround OFF

2 step mute ON

AV3 mode OFF

[After replacing the Memory IC (IC803)]

The memory IC, IC803, stores the feature setting data of TV set and service adjustments data for each circuit,

therefore, when the memory IC is replaced, it should be programmed by following “OPTION SETTING” and

“SERVICE ADJUSTMENT”.

OPTION SETTINGS FOR CE21C6-C-00

EB6-D chassis

[SERVICE ADJUSTMENT]

To enter the Service Mode

+ Press and hold the “GREEN” button and the P▼ button on front control panel. The adjustment item will be

displayed on the screen.

To select the mode and service item and change data value

+ Select the desired adjustment mode (Image or Regular mode )by using the P▲or P▼button and then press

the Volume + (RIGHT) button.

+ To select the adjustment item, use the P▲or P▼button.

+ To change the service data, use the Volume -(LEFT) or Volume + (RIGHT) button.

+ The data which is set in the service mode is stored into the memory IC automatically.

Image

Note: Some items of the service adjustments for this chassis are controlled by the CPU, IC801, and the

adjustments are carried out by using the RC handset.

IMPORTANT NOTICE

Do not attempt to adjust service adjustments not listed below otherwise it may cause loss of

performance and product safety.

Image

01 P V-P 05 Regular

01 AGC 2A

Image mode Regular mode

SERVICE ADJUSTMENTS

Adjustment No.

and Item name Adjustment No.

and Item name Adjustment Data

Adjustment Data

The available adjustment items are as follows;

Image : This can be adjusted for picture images/shapes.

Regular : This can be adjusted for the service adjustment.

other : This is for factory setting. Do not adjust.

TB1251 : This is for the factory setting. Do not adjust.

* Do not adjust items in the “other” and “TB1251” otherwise

the TV set may not operate properly.

7EB6-D chassis

ADJUSTABLE SERVICE ADJUSTMENT

IMPORTANT NOTICE

Do not attempt to change the data value of service items not listed in the table below otherwise it may cause loss

of performance and product safety. If you can not restore the data value of each service item, please initialize the

memory IC following to the below description “INITIALIZATION OF MEMORY IC” and re-adjust all of service

adjustments.

[Image]

[Regular]

Exit from the Service Mode

+ Press the RECALL button or turn off the TV set by using the Mains switch.

Item No. OSD Description

1 AGC AGC Adjustment

2 -- Cut-off Adjustment

3 GRY Grey Scale Adjustment [White Balance]

4 CTR Contrast Adjustment (Factory use, use default setting data)

5 SCR Screen adjustment (Factory use, use default setting data)

6 OSD On-screen Display Positioning Adjustment

Item No. OSD Description

01 P V-P P Vertical Position Adjustment

02 P H-P P Horizontal Position Adjustment

03 P V-L P Vertical Linearity Adjustment

04 P VSC P Vertical S-Correction Adjustment

05 P V-S P Vertical Size Adjustment

[INITIALIZATION OF MEMORY IC]

To initialize the memory IC (IC803), press and hold the “NORMAL” button and then press the P▼ button

on the front control panel, and then turn the Mains switch Off and On. Now the initialization is completed.

When initialized the memory IC, all of the setting data (option setting data and service adjustment data) stored in

the IC are reset to the default value. It is necessary to set the option setting and readjust the service adjustments

listed on the above.

SERVICE ADJUSTMENTS

EB6-D chassis

1. Receive white raster pattern.

2. Set controls to normal.

3. Connect digital voltmeter to test point TP-B and GND.

4. Adjust voltage to 115 ±0.5V by using VR641 (21”).

1. Input and tune an RF signal which is VHF ch05

175.25MHz with 63dBuV/75Ωterminated signal gain.

2. Connect digital voltmeter to test point TP-A and GND.

3. Enter the service mode (see pages 5&6) and select

mode “Regular”, and select item “01 AGC”.

4. Press the LEVEL+ or LEVEL - button to adjust

voltage to be 3.2Vdc.

5. Exit the service mode (see page 7).

By using FOCUS VR, adjust focus control for well defined

scanning lines.

CUT-OFF ADJUSTMENT

1. Select AV mode with no signal input.

2. Enter the service mode (see pages 5&6) and select

mode “Regular”, item “02”. A horizontal line will appear

on the screen.

3. Adjust the Screen VR on the FBT to obtain the one

colour to be just visible.

4. By using the buttons 1, 2, 4, 5, 7, 8 on the remote

control, adjust the line to be white.

The key allocation is as follows;

Button No. Operation

1 Increase Red

2 Decrease Red

4 Increase Green

5 Decrease Green

7 Increase Blue

8 Decrease Blue

DRIVE ADJUSTMENT

5. Receive the white raster signal.

6. Select item “03 GRY”.

7. Adjust [R-Drive] and [B-Drive] control to obtain proper

white balance by using LEVEL+ or LEVEL - button.

a) Select [R-Drive] or [B-Drive] by using the P▲or

P▼button.

b) Adjust [R-Drive] or [B-Drive] by using the LEVEL+

or LEVEL - button.

8. Exit the service mode (see page 7).

1. Receive circular pattern .

2. Enter the service mode (see pages 5&6) and select

mode “Image”, item “02 P H-P”.

3. Press the LEVEL+ or LEVEL - button to adjust

horizontal centre.

4. Exit the service mode (see page 7).

1. Receive circular pattern.

2. Connect a digital volt-meter to both terminals of R453,

and a high voltage meter to CRT anode.

3. Confirm high voltage to be 25.0KV ± 1 KV at beam

current reading 1.1mV (21”).

HIGH-VOLTAGE CONFIRMATION

HORIZONTAL POSITION ADJUSTMENT

Regular

03 GRY 3F

[R-Drive]

[B-Drive]

Adjustable Range:

00 ~ 3F ~ FF

GREY SCALE ADJUSTMENT

FOCUS ADJUSTMENT

RF-AGC ADJUSTMENT

+B ADJUSTMENT

IMPORTANT NOTICE

Do not attempt to adjust the following service adjustments except requiring the readjustments in servicing

otherwise it may cause loss of performance and product safety.

SERVICE ADJUSTMENTS

9EB6-D chassis

1. Receive circular pattern.

2. Enter the service mode (see pages 5&6) and select

mode “Image, item “01 P V-P”.

3. Press the LEVEL+ or LEVEL - button to adjust

vertical centre.

4. Exit the service mode (see page 7).

1. Receive circular pattern .

2. Enter the service mode (see pages 5&6) and select

mode “Image”, item “05 P V-S”.

3. Press the LEVEL+ or LEVEL - button to adjust the

vertical height.

4. Exit the service mode (see page 7).

1. Receive circular pattern.

2. Enter the service mode (see pages 5&6) and select

mode “Regular”, and select item “06 OSD”. The OSD

test bar will appear on the top of screen.

3. Press the LEVEL+ or LEVEL - button to adjust proper

OSD positioning.

4. Exit the service mode (see page 7).

❚❚❚❚❚❚❚❚❚❚❚❚❚❚❚❚❚❚❚❚

OSD POSITIONING ADJUSTMENT

VERTICAL SIZE ADJUSTMENT

VERTICAL POSITION ADJUSTMENT

SERVICE ADJUSTMENTS

EB6-D chassis

SW601

F601

Q613

Q461

Q462

T611

Q612

TP-B

Q611

SW1901

SW1902

SW1903

SW1904

Q666 IC803

VR641

Q661

Q641

Q651

Q432

Q442

Q431

T431

TP15 K1002

IC1201

K1001

SW501

IC1202

IC501

TP14

KCC

IC3451

IC801

K1101

IC3501

KBB

IC201

TP-A

KSF2

T131

KSF1

IC001

K1921

T451 A101

R453

K701

Q701-B

Q701-A

Q740 Q711-A

Q711-B Q721-A

Q721-B

K7Q

Q751

K7P

SERVICE ADJUSTMENTS

Component Locations

Main Board

CRT Board

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