SANYO CE21CM1F Service Manual

Colour Television	CE21CM1F-C
Service Manual	CE21CM1F-C
Model CE21CM1F-C

Service Ref. No. CE21CM1F-C-00

PRODUCT CODE: 111360804

ORIGINAL VERSION: Chassis No. EB7-B

Please use Schematic Diagram SKP20446 with
this Service Manual.
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
Contents
Safety precautions/Specifications ..................................................................................................................	2
Block diagrams ..............................................................................................................................................	3
Cabinet Disassembly ......................................................................................................................................	4
Adjustment and Repair Procedures............................................................................................................	5~9
CPU Functions ..............................................................................................................................................................................	10~11
Component Locations ............................................................................................................................	12~13
IC Block Diagrams ..................................................................................................................................	14~18
Pin description of semiconductors ................................................................................................................	19
Part Description and reading of schematic diagram ....................................................................................	20
Cabinet Parts List/TV Stand parts list ..........................................................................................................	21
Electric Parts List ....................................................................................................................................	22~26

Part No. SKSM0702 C5KEV JULY 2004

SAFETY PRECAUTION

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.

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	System B/G, I, D/K, L/L’
Colour system	PAL/SECAM/NTSC4.43 (PAL/NTSC4.43/MTSC3.58 INAV MODE)
Receiving channel	UHF: 21~69
	VHF: E2-E12, F2-F10, R1-R12
	CATV: X, Y, Z, S1-S41, B-Q
Aerial input impedance	75ohm
Rear AV terminal
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, RGB, S-VHS and Audio L/R
OUTPUT:	Monitor output with composite video and Audio L/R
Sound output(Music)	5 x 2
Dimensions (WxHxD)	612 x 476 x 482mm
Weight	21 Kg

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IC3451	K1101	Outline
IC3451	FRONT AV
NICAM/
NICAM/
STEREO
STEREO

AERIAL

SPEAKER

8/10

1/5

52/53

23/24

VIDEO IN

SP902

IC001

A1901

IC801

A101

SP901

RC RECEIVER

AUDIO-OUT

CPU

MONO OUT

TUNER

X132

KEY SW

SCL

SDA

RC-IN

SIF-OUT

IF-IN

MUTE

SCL SDA

SCL

KEY-IN

SDA

SIF-IN

X131

BLK

IF/VIDEO/CHROMA/DEF <TB1251>

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POWER

Out-Video/Y

C-IN

SC2SCART

K1002

I2C BUS SDA

IC1201

CONTROL SCL

SC1SCART

K1001

AV-VIDEO-SW <LA7954>

6 4

IC803

Video-IN

SDA

IC201

Video-Out

MEMORY

SCL

R/G/B-IN

11/7/15

C-IN

Q666

EW-OUT 33

V-OUT

C-IN

Video/

PROTECT

Y-IN

IC641

C-OUT

H-OUT

T611

D646

Q462

CONVERTER

D641

51/53

IC642

M-OUT

Q661

D647

Q461

D603-D606

IC643

5V-1

12 1/3/13

R/G/B-IN

2/5/12

7/11/15

C607

D637

IC1401

25V

RGB-SW

L461

SW901

Q613

Q651

IC501

L462

R/G/B-OUT

27V

V-OUTPUT

Q682

Q611

Q432

T451 FLYBACK

Q701

145V

PICTURE

Q641

H-OUTPUT

CRT

Q711

TUBE

Q685

Q721

Reg.

Q431

HEATER

Q686

D615

Q645

D.Y

H.V

150V

FOCUS/SCREEN

C5KEV

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

CABINET DISASSEMBLY

CABINET BACK DISASSEMBLY

(A)

1.Remove 6 screws(A) for 21”

2.Pull out the cabinet back.

(A)

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(A)

AV1

(A)

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OPTION SETTING

[After replacing the Memory IC (IC803)]

The memory IC, IC803, stores the option data and service adjustment data for the TV, therefore, when the memory IC is replaced, the following setting and “SERVICE ADJUSTMENT” on next page must be performed.

To enter to 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.

OPTION

	ON-TIMER	ON
	ON-TIMER	ON
	SORT MODE	SORTING
	P&P	ON
	WEL. TEXT	ON
	COMB FILTER	OFF
	BBE	OFF
	AUTO VOLUME	OFF
	HEADPHONE	OFF
	COUNTRY	BG / DK / I / L/L'
	WIDE	OFF
	AV3	OFF
	CS / A/B	CS
	ADJUST :	EXIT : RECALL

OPTION MODE FOR CE21CM1F-C-00

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.

Option Mode	Mode	Description & Note
ON-TIMER	ON or OFF	On-timer available, default “ON”
SORT MODE	SORTING or	Tuning mode, default “SORTING”
	TUNING
P & P	ON or OFF	Plug & Play mode, default “ON”
WEL. TEXT	ON or OFF	Display message when first set up, default “ON”
COMB FILTER	OFF or ON	For factory use, default “OFF”
BBE	ON or OFF	BBE sound mode, default “OFF”
AUTO VOLUME	ON or OFF	Default “OFF”
HEADPHONE	ON or OFF	Headphone control , default “OFF”
COUNTRY	UK, IRE	TV system, default “UK”
	BG/DK / I / LL’
WIDE	ON or OFF	Wide mode, default “ON”
AV3	ON or OFF	AV3 Control default “OFF”
CS/A,B	CS or A/B	Function of “CS” remote control button

Exit from the Service Mode

+ Press the RECALL ? button.

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SERVICE ADJUSTMENTS

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.

[After replacing the Memory IC (IC803)]

The memory IC, IC803, stores the service adjustments data for each circuit, therefore, when the memory IC is replaced, it should be programmed by using “OPTION SETTING” on previous page and the following adjustments.

ADJUSTABLE SERVICE ADJUSTMENT

REGULAR

	Item No.	OSD	Description
	1	AGC	AGC Adjustment
	2	--	Cut-Off Drive Adjustment
	3	GRY	G-Drive Adjustment (white balance)
	4	GRY	B-Drive Adjustment (white balance)
	5	CTR	Contrast Adjustment (use factory setting)(for factory use)
	6	--	Screen Adjustment mode
	8	OSD	OSD Positioning Adjustment

IMAGE

	Item No.	OSD	Description
	1	P V-C	P Vertical Position Adjustment (not used on 4:3 models)
	2	P H-P	P Horizontal Position Adjustment
	3	P V-L	P Vertical Linearity Adjustment
	4	P VSC	P Vertical S-Correction Adjustment
	5	P V-A	P Vertical Size Adjustment
	6	P H-S	P Horizontal Size Adjustment
	7	P E-P	P Pin Cushion Adjustment
	8	P E-T	P Trapezoid Distortion Adjustment
	11	P ECT	P Top Corner Correction Adjustment
	12	P ECB	P Bottom Corner Correction Adjustment
	13	P HPA	P Parallelogram Distortion Adjustment
	14	P H-B	P Horizontal Bow
	15	P VPH	P Vertical Phase Adjustment (4:3 Vertical Adjustment)

IMPORTANT NOTICE

Do not attempt to adjust service adjustments not listed on the above otherwise it may cause loss of performance and product safety.

To enter to the Service Mode

+Press and hold the GREEN button on the remote control and then press the P▼ button inside of the door. Press the P▼ button to highlight the mode required (Regular, Image, others and TB12**). Then press the F/OK button to select the mode.

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.

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To select the mode and service item and change data value

+Highlight the desired adjustment mode by using the P▲ or P▼ button and then press the F/OK 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.

REGULAR mode

IMAGE mode

REGULAR
1, AGC	38

IMAGE
1. P V-P	1F

Adjustment No.	Adjustment Data	Adjustment No.	Adjustment Data
and Item name		and Item name

Exit from the Service Mode

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

INITIALISATION OF MEMORY IC

To initialise the memory IC (IC803), press and hold the NORMAL button on the remote control, then press the P▼ button on the front panel of the TV set and then turn the Mains switch Off and On. The initialisation is now completed.

When initialised the memory IC and all of the setting data (option data and service adjustment data) stored in the IC are reset to the default value. It is necessary to set the option settings and readjust the service adjustments listed on page 6 and to re-tune all the channels.

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ADJUSTMENTS

IMPORTANT NOTICE

Do not attempt to adjust the following service adjustments except when adjustments are required in servicing otherwise it may cause loss of performance and product safety.

+B VOLTAGE ADJUSTMENT

1.Receive white raster pattern.

2.Set controls to normal.

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

4.Adjust voltage to 115 ±0.5V by using VR641.

DRIVE ADJUSTMENT

6.Select item no.3 “REGULAR 3, GRY” (G-Drive) or 4 “REGULAR 4, GRY” (B-Drive) and adjust both initially to 40.

7.Change data value of each item by using LEVEL + or LEVEL - button to obtain the proper white balance.

AGC ADJUSTMENT

1.Input and tune an RF signal which is UHF to the clearest station.

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

4.Enter to the service mode and select mode “REGULAR”, and select item no.1 “REGULAR 1, AGC”.

5.Press the LEVEL+ or LEVEL - button to adjust voltage to be 3.2Vdc.

FOCUS ADJUSTMENT

By using FOCUS VR, adjust focus control for well defined scanning lines.

GREY SCALE ADJUSTMENT

SCREEN ADJUSTMENT

1.Receive black & white pattern.

2.Enter to the service mode and select mode “REGULAR”, and select item no. 2 “REGULAR 2, CUT”. The horizontal line will appear on the screen.

3.Set the SCREEN VR for one colour to be just visible.

4.Using the numeric buttons shown set each colour to minimum by decreasing to the point where any further

decrease resets the adjustment to maximum value.

BIAS ADJUSTMENT

5.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

1Increase Red

2Decrease Red

4Increase Green

5Decrease Green

7Increase Blue

8Decrease Blue

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