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Sanyo CE21BN4-C, Руководство по обслуживанию

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Sanyo CE21BN4-C Скачать руководство пользователя страница 7

B1 POWER SUPPLY ADJUSTMENT
1. Set VR641 to be mechanical centre before pressing

the main switch.

2. Tune the receiver to PAL circular pattern.
3. Set brightness and contrast controls to normal.
4. Connect digital V-meter to test point "TP-B".
5. By using VR641, adjust voltage to 130 ± 0.5 V.

AFT ADJUSTMENT
1. Tune the receiver to the clearest station. 
2. By using T141, adjust AFT to obtain the best  picture.

AGC ADJUSTMENT
NOTE: 

Do not attempt this adjustment with weak
signal.

1. Tune the receiver to the clearest station.

2. Set AGC VR(VR131) in direction which causes snow

noise to appear, then in the opposite direction until
snow noise just disappears.

GREY SCALE ADJUSTMENT

[SCREEN VR ADJUSTMENT]
1. Tune the receiver to the white pattern.
2. Set brightness and contrast controls to normal.
3. Set VR602and VR612  to be mechanical centre.
4. Turn VR601, VR611 and VR621 fully counter-

clockwise.

5. Set mode to one horizontal scanning  line, how to set

refer to "service mode"

6. Set screen VR for one colour to be just visible.
[BIAS VR ADJUSTMENT]
7. By using VR601, VR611 or VR621, adjust line to be

white.

8. Set screen mode OFF, how to set refer to "service

mode"

[DRIVE VR ADJUSTMENT]
9. By using VR602 and VR612, adjust white balance.

HIGH VOLTAGE & WIDTH ADJUSTMENT
[HIGH VOLTAGE ADJUSTMENT]
1. Tune the receiver to circular pattern.
2. Set brightness and contrast controls to maximum.
3. Connect digital V-meter to both terminals of R224, and

high voltage meter to CRT anode.

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

current 1.1mA, and less than 28.0 KV at 0 beam
current.

[H-WIDTH ADJUSTMENT]
5. If H-width is too wide or

narrow, connect or
disconnect a lead wire
J213.

6. Reconfirm high voltage.

H-CENTRE ADJUSTMENT
1. Tune the receiver to circular

pattern.

2. Adjust H-centre by using

VR361.

V-CENTRE ADJUSTMENT
1. Tune the receiver to circular pattern.
2. Adjust V-centre by using SW501.

V-SIZE ADJUSTMENT
1. Tune the receiver to circular pattern.
2. Adjust V-size by using VR501.

FOCUS ADJUSTMENT
By using FOCUS VR, adjust focus control for good
scanning lines.

SERVICE CONTROL ADJUSTMENT

-7-

F7JGV

SW601

Main switch

F601

Fuse

6

11

T481

RC Transformer

o

-coupler

SW1901
Prog.+

SW1902
Prog.-

SW1903
Vol.+

SW1904
Vol.-

Q641

VR641

+B ADJ.

Q681

IC801
CPU

Q501

Q432

H-Output

IC501

V-Outout

IC651

+12V

Scart 2

SW501

V-Centre

VR501

V-Size

IC271

1H Delay

IC652

+8V

Scart 1

IC201
IF/Video/Croma/Def.

IC281

VR361

H-Centre

VR131

AGC

T101

T141

SIF Board

A101 Tuner

IC1202

Int./Ext. SW.

IC1201

AV2 SW.

TP-E

TP

-

Q-SOUND Board

T611

Converter T

TP-B

Q461

Q

4

T451

Flyback

Transformer

J213

Q501

Q432

H-Output

IC501

V-Outout

Scart 2

SW501

V-Centre

VR501

V-Size

IC271

1H Delay

Scart 1

IC201
IF/Video/Croma/Def.

IC281

VR361

H-Centre

VR131

AGC

T101

SIF Boar

d

A101 Tuner

IC1202

Int./Ext. SW.

IC1201

AV2 SW.

TP-E

Q-SOUND Board

T141

VR641

J213

VR361

VR501

SW501

VR131

Содержание CE21BN4-C

Страница 1: ...fer from the design specifications Refer to the specifications for the design specifications Contents Safety precautions Specification 2 Block diagram 3 Circuit description 4 5 Cabinet Disassembly 6 Service control adjustment 7 Circuit alignment 8 Important notice 9 Special Function 10 Cabinet Parts List 11 Electrical Parts List 12 21 Model CE21BN4 C Service Ref No CE21BN4 C 00 PRODUCT CODE 111339...

Страница 2: ...ts 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 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 Com...

Страница 3: ...ness Control Keys 10 VL VH U IF TU 1 16 45 46 28 29 30 31 41 48 37 18 19 20 7 13 15 21 22 23 24 X131 SAW Filter IC271 1H Delay R Y B Y R Y B Y CVBS In Functuin In AV1 AV2 11 12 14 16 B G R BLK External CVBS in Internal CVBS in Q151 Q152 Q154 H Drive Q431 Q432 H Outpit V Drive V Feedback Audio In Speakers VR501 C512 H V HV Q2601 Q2611 Q2621 Q171 1 6 3 8 Out Audio I O Audio I O Video I O Video I O R...

Страница 4: ...pin13 or pin15 is separated to luminance Y signal and chroma signal in IC201 These pins are used in common with H V sync separation input The peaking of Y signal is adjusted by DC voltage of pin14 SHARPNESS control The chroma signal is divided into R Y and B Y chroma signals demodulated in IC201 and output from pin30 R Y and pin31 B Y These chroma signals pass through the 1H delay line circuit IC2...

Страница 5: ... base of Q462 to compensate for width variations due to variations in the beam current 7 CPU System and Teletext Control Pin description Pin1 Tuning voltage output Pin2 Brightness control output 6 bit DAC Pin3 Contrast control output 6 bit DAC Pin4 Colour control output 6 bit DAC Pin5 Sharpness control output 6 bit DAC Pin6 Not used GND Pin7 Not used GND Pin8 Power ON OFF output H ON Pin9 AFT sign...

Страница 6: ... 6 F7JGV CABINET DISASSEMBLY CABINET BACK DISASSEMBLY 1 Remove 7 screws A 2 Pull out the cabinet back A A A A A A A ...

Страница 7: ... pattern 2 Set brightness and contrast controls to maximum 3 Connect digital V meter to both terminals of R224 and high voltage meter to CRT anode 4 Confirm high voltage to be 25 0 1 KV at beam current 1 1mA and less than 28 0 KV at 0 beam current H WIDTH ADJUSTMENT 5 If H width is too wide or narrow connect or disconnect a lead wire J213 6 Reconfirm high voltage H CENTRE ADJUSTMENT 1 Tune the rec...

Страница 8: ...plitude Waveform CIRCUIT ALIGNMENT VIF alignment P P 0 002µF 75Ω 1kΩ a b 10kΩ Input probe Output probe SIF alignment SIF BOARD DC 12V AGC voltage 5V DC Output probe Input probe Sweep ATT Marker Frequency Tool A SETTING IC3801 pin9 IC3801 pin13 IC3801 pin5 Side b IC3801 pin17 10dB 38 9MHz IC3801 pin6 and ground Adjustment 1 By using T3801 adjust the VCO oscillation to be P Waveform 0 01 Tool A IC38...

Страница 9: ...eble Centre Balance Centre Volume Step 12 B Service Mode 1 To enter the service mode press and hold the Function button on the remote control handset and press the programme button on the TV set The following OSD appears on the screen 2 Select desired service item by using the Function button on the remote control handset 3 Change date by using the Level or button 4 To return to TV mode press the ...

Страница 10: ...5 019 2449 LATCH PUSH 7 9X6 9BK 11 4AA2CN0026A CRT CUSHION B3MY UK 12 412 009 3003 SPECIAL SCREW 13 411 076 1301 SCR TPG BRZ 4X14 14 411 076 1004 SCR TPG BRZ 4X12 15 610 275 0232 DEC CONTROL SHEET F3JPV ACCESSORIES 16 JXMKE RC TRANSMITTER SKP10202 INST MANUAL F7JG 1 SKP10203 INST MANUAL F7JG 2 SKP20276 SHEM DIAG F7JGV 00 645 027 6927 BATTERY Note Parts order must contain Service Ref No Part No and...

Страница 11: ...rder must contain Service Ref No Part No and descriptions Product safety should be considered when a component replacement is made in any area of a receiver Components indicated by a mark in this parts list and the circuit diagram show components whose value have special significance to product safety It is particularly recommended that only parts specified on the following parts list be used for ...

Страница 12: ...1002 406 007 2106 TR JC546A 406 007 2007 TR JC546B 405 019 1909 TR 2SC536 E NP 405 019 2708 TR 2SC536 F NP 405 019 3804 TR 2SC536 G NP Q1003 406 007 2106 TR JC546A 406 007 2007 TR JC546B 405 019 1909 TR 2SC536 E NP 405 019 2708 TR 2SC536 F NP 405 019 3804 TR 2SC536 G NP Q1004 406 007 2106 TR JC546A 406 007 2007 TR JC546B 405 019 1909 TR 2SC536 E NP 405 019 2708 TR 2SC536 F NP 405 019 3804 TR 2SC53...

Страница 13: ...007 TR JC546B 405 019 1909 TR 2SC536 E NP 405 019 2708 TR 2SC536 F NP 405 019 3804 TR 2SC536 G NP Q873 406 007 2106 TR JC546A 406 007 2007 TR JC546B 405 019 1909 TR 2SC536 E NP 405 019 2708 TR 2SC536 F NP 405 019 3804 TR 2SC536 G NP Q874 406 007 2106 TR JC546A 406 007 2007 TR JC546B 405 019 1909 TR 2SC536 E NP INTEGRATED CIRCUIT IC001 409 301 4906 IC TDA7263M IC1202 409 120 3401 IC LA7221 IC201 40...

Страница 14: ...IC 0 1U Z 25V 403 070 2606 CERAMIC 0 1U Z 50V C207 403 068 0409 CERAMIC 0 1U Z 25V 403 070 2606 CERAMIC 0 1U Z 50V C208 403 068 0409 CERAMIC 0 1U Z 25V 403 070 2606 CERAMIC 0 1U Z 50V C209 403 069 1702 CERAMIC 1000P K 50V C212 403 049 9803 ELECT 2 2U M 50V C215 403 270 3908 MT POLYEST 0 47U K 63V 403 256 0808 MT COMPO 0 47U J 50V C222 404 045 6605 NP ELECT 2 2U M 50V C226 403 138 1602 ELECT 1U M 1...

Страница 15: ...4 7 JA 1 2W R010 401 010 1504 CARBON 4 7 JA 1 2W R013 401 037 6704 MT GLAZE 1 2K JA 1 10W R014 401 025 7409 CARBON 220 JA 1 6W R015 401 037 5400 MT GLAZE 1K JA 1 10W R016 401 038 6505 MT GLAZE 47K JA 1 10W R017 401 037 5608 MT GLAZE 10K JA 1 10W R100 401 037 5004 MT GLAZE 0 000 ZA 1 10W R1001 401 038 7601 MT GLAZE 560 JA 1 10W R1002 401 038 0701 MT GLAZE 2 2K JA 1 10W R1003 401 038 7601 MT GLAZE 5...

Страница 16: ...ZE 100 JA 1 10W R365 401 038 6406 MT GLAZE 4 7K JA 1 10W R431 401 038 3504 MT GLAZE 330 JA 1 10W R432 401 038 3504 MT GLAZE 330 JA 1 10W R433 401 010 3102 CARBON 470 JA 1 2W R434 401 067 9201 OXIDE MT 390 JA 2W R435 402 069 8704 WIRE WOUND 8 2 KA 7W 402 076 0609 WIRE WOUND 8 2 KA 7W R436 401 021 3009 CARBON 5 6K JA 1 4W R441 401 058 3706 OXIDE MT 1K JA 1W R447 401 026 9907 CARBON 4 7K JA 1 6W R448...

Страница 17: ... N 610 239 7567 VR B 10K VR501 645 006 5408 VR SEMI 100 N 645 006 5231 VR SEMI 100 N 610 232 7908 VR SEMI 100 N VR641 645 006 5514 VR SEMI 2 2K N 645 003 5579 VR SEMI 2 2K N 610 239 7581 VR B 2K TRANSFORMER T101 610 037 4508 S COIL 33R4M 7K T141 610 037 4522 S COIL T431 610 000 1053 DRIVE TRANS 610 000 1060 DRIVE TRANS T451 645 035 5295 TRANS FLYBACK T611 645 015 7646 TRANS POWER PULSE 645 018 942...

Страница 18: ...UPLE CNY17F 3OPT6 D616 407 013 1008 DIODE 1S1553 407 013 4306 DIODE 1S2076A 407 013 6508 DIODE 1S2471 D617 407 007 6606 DIODE ES1 407 007 6903 DIODE ES1Z 408 009 9008 DIODE BYD33D D618 407 013 1008 DIODE 1S1553 407 013 4306 DIODE 1S2076A 407 013 6508 DIODE 1S2471 D619 407 053 3000 ZENER DIODE MTZ11C 407 054 1807 ZENER DIODE RD11EB3 D641 407 007 7702 DIODE EU2A D642 407 007 7603 DIODE EU2 407 007 7...

Страница 19: ... 50V C3492 403 069 5611 CERAMIC 0 01U K 50V C3493 403 069 5611 CERAMIC 0 01U K 50V C3521 403 279 4312 CERAMIC 0 33U K 16V C3522 403 279 4312 CERAMIC 0 33U K 16V RESISTOR R1253 401 038 9318 MT GLAZE 68K JA 1 10W R1254 401 038 9318 MT GLAZE 68K JA 1 10W R1255 401 038 9318 MT GLAZE 68K JA 1 10W R1256 401 038 9318 MT GLAZE 68K JA 1 10W R1261 401 038 6317 MT GLAZE 470 JA 1 10W R1262 401 038 0711 MT GLA...

Страница 20: ... J017 J016 1AV4U20B20900 Figure 1 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 1 2 3 4 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 1 2 3 4 J 0 1 7 J 0 1 6 A1901 J 0 1 7 J 0 1 6 A1901 A1901A All i...

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