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Colour Television
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 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

Electric Parts List

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-19

Model CE25DN4-C

Service Ref.No.: CE25DN4-C-01

PRODUCT CODE: 111339716
ORIGINAL VERSION: Chassis No. EB4-A(MKII)

Part No. SKSM0309 F7VVV APRIL 1999

25DN4

-C

Содержание CE25DN4-C

Страница 1: ...fer from the design specifications Refer to the specifications for the design specifications Contents Safety precautions Specifications 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 Electric Parts List 12 19 Model CE25DN4 C Service Ref No CE25DN4 C 01 PRODUCT CODE 1113397...

Страница 2: ...ist 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 Comply with all caution and saf...

Страница 3: ...arpness 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 Video In Audio In L R Q171 1 6 3 8 Out 4 Out 2 7 Audio ...

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: ...T BACK DISASSEMBLY 1 Remove 10 screws A 2 Pull out the cabinet back PLACING THE CHASSIS TO SERVICE POSITION 1 Pullout the chassis and put it to the rails on the side cabinet 2 Fix main board with hook on the top rail A A A A A A A A A A ...

Страница 7: ...cular 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 26 0 1 KV at beam current 1 3 and less than 29 0 KV at 0 beam current H WIDTH ADJUSTMENT 5 Adjust VR462 to obtain proper H width 6 Reconfirm high voltage H CENTRE ADJUSTMENT 1 Tune the receiver to circular pattern 2 Adj...

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: ...art SET 4 Programme position 4 start SET 5 Programme position 5 start SET 6 Programme position 6 start SET 7 Programme position 7 start SET 8 Programme position 8 start SET 9 AV1 start SETTING PROCEDURE 1 Press and hold the button on the Remote control handset and then press the Ps button on the TV set 2 To select the Item number press the button on the remote control handset 3 To select the Set n...

Страница 11: ...10 224 5721 CRT CUSHION B3MY UK 12 411 076 1004 SCR TPG BRZ 4X12 13 411 076 1301 SCR TPG BRZ 4X14 14 1AA2HLM0146A HOLDER DC GBR F3SC 15 412 009 3003 SPECIAL SCREW ACCESSORIES 16 JXMCA RC TRANSMITTER SKP10174 INST MANUAL F7WV 1 SKP10175 INST MANUAL F7WV 2 SKP10178 INST MANUAL F7WV 3 645 000 6708 BATTERY MANGAN COMPOSITE Note Parts order must contain Service Ref No Part No and descriptions 1 2 3 4 5...

Страница 12: ... No Description CHASSIS ELECTRICAL PARTS LIST Note Parts order 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 onl...

Страница 13: ...R Q3452 405 014 4519 TR 2SC2412KT146 R Q3453 405 014 4519 TR 2SC2412KT146 R Q3501 405 014 4519 TR 2SC2412KT146 R Q3502 405 014 4519 TR 2SC2412KT146 R Q3503 405 014 4519 TR 2SC2412KT146 R INTEGRATED CIRCUIT IC1251 409 009 2501 IC HD14052BP IC3451 409 445 1403 IC TDA9875A V2 IC3500 409 367 2809 IC BA178M09T IC3501 409 398 9204 IC MM1369AD CAPACITOR C1251 403 248 1618 ELECT 47U M 16V C3452 403 314 59...

Страница 14: ... 5014 MT GLAZE 0 000 ZA 1 10W J3463 401 037 5014 MT GLAZE 0 000 ZA 1 10W J3465 401 037 5014 MT GLAZE 0 000 ZA 1 10W J3469 401 037 5014 MT GLAZE 0 000 ZA 1 10W J3474 401 037 5014 MT GLAZE 0 000 ZA 1 10W J3486 401 037 5014 MT GLAZE 0 000 ZA 1 10W J3489 401 037 5014 MT GLAZE 0 000 ZA 1 10W J3501 401 037 5014 MT GLAZE 0 000 ZA 1 10W K12B 645 008 7288 HOUSING PLUG 5P K34A 645 027 0192 PLUG 10P K34B 645...

Страница 15: ... 0419 CERAMIC 0 1U Z 25V C138 403 069 9510 CERAMIC CHIP 0 01 Z 50V C141 403 028 4419 CERAMIC 56P J 50V C142 403 068 0419 CERAMIC 0 1U Z 25V C143 403 027 1211 CERAMIC 5P J 50V C146 403 010 8517 CERAMIC 18P J 50V C151 403 024 2112 CERAMIC 39P J 50V C162 403 068 2512 CERAMIC 0 22U Z 25V C171 403 237 8057 MT COMPO 0 1U J 50V C1901 403 069 1712 CERAMIC 1000P K 50V C200 403 068 0419 CERAMIC 0 1U Z 25V C...

Страница 16: ...AZE 2 2K JA 1 10W R1003 401 038 7611 MT GLAZE 560 JA 1 10W R1004 401 038 0711 MT GLAZE 2 2K JA 1 10W R1005 401 027 6628 CARBON 75 JA 1 6W R1006 401 038 5310 MT GLAZE 39K JA 1 10W R1007 401 038 3712 MT GLAZE 33K JA 1 10W R1008 401 027 6628 CARBON 75 JA 1 6W R1009 401 027 6628 CARBON 75 JA 1 6W R101 401 038 6218 MT GLAZE 47 JA 1 10W R1010 401 027 6628 CARBON 75 JA 1 6W R1011 401 037 5212 MT GLAZE 10...

Страница 17: ...K JA 1 10W R431 401 038 3514 MT GLAZE 330 JA 1 10W R432 401 037 5410 MT GLAZE 1K JA 1 10W R433 401 007 1134 CARBON 1K JA 1 2W R434 401 067 9003 OXIDE MT 390 JA 2W R435 402 075 2307 WIRE WOUND 10 JA 5W R436 401 012 7049 CARBON 10K JA 1 4W R441 401 058 3706 OXIDE MT 1K JA 1W R447 401 026 9927 CARBON 4K7 JA 1 6W R448 401 009 5843 CARBON 330 JA 1 2W R451 401 064 5305 OXIDE MT 1 5 JA 2W R462 401 014 41...

Страница 18: ...E 1 2K JA 1 10W R897 401 012 5748 CARBON 1K JA 1 4W R898 401 012 5748 CARBON 1K JA 1 4W VARIABLE RESISTOR VR131 645 003 5531 VR 10K ALPS VR361 645 003 5531 VR 10K ALPS VR462 645 003 5616 VR 4 7K ALPS VR501 645 006 5231 VR 100 ALPS VR641 645 003 5579 VR 2 2K ALPS TRANSFORMER TP A 645 008 4058 TERMINAL PLUG TP B 645 008 4058 TERMINAL PLUG TP D 645 008 4058 TERMINAL PLUG TP E 645 008 4058 TERMINAL PL...

Страница 19: ...4 401 037 5014 MT GLAZE 0 000 ZA 1 10W J225 401 037 5014 MT GLAZE 0 000 ZA 1 10W J226 401 037 5014 MT GLAZE 0 000 ZA 1 10W J231 401 037 5014 MT GLAZE 0 000 ZA 1 10W J232 401 037 5014 MT GLAZE 0 000 ZA 1 10W J233 401 037 5014 MT GLAZE 0 000 ZA 1 10W J234 401 037 5014 MT GLAZE 0 000 ZA 1 10W J235 401 037 5014 MT GLAZE 0 000 ZA 1 10W J236 401 037 5014 MT GLAZE 0 000 ZA 1 10W J237 401 037 5014 MT GLAZ...

Страница 20: ...Sanyo Industries UK Ltd Printed in UK ...

Страница 21: ...04 C1109 L1103 C1108 R1200 D1201 R354 D352 D1903 T611 11 D1901A R898 R897 C892 R131 R132 D651 IC653 D1905 R521 C1102 LA7577N KK 1000BA SB5392T SL0006XV 1 10 GZ0 0 X X X X X X X X CJ 330CA KZ 0 01FA X KZ 0 01FA 16EM 10 KZ 0 01FA KZ 0 01FA EM 0 47 1 10 GJ10K 1 10 GJ56 KK 560BA CJ 22CA 25EM 4 7 2SC2812L6 2SC2412KR 1 10 GZ0 0 X X 1 10 GJ330 1 10 GJ820 1 10 GJ1K J10KU 040N J10KU 040N 1 10 GJ1 2K J L81B...

Страница 22: ...Main Board Pannello Principal Circuit side Lato del Circuito ...

Страница 23: ...MTZ20A EU1 1 2DJ 270 4 7K L2G33R3KN MTZJ11C UZ 11BSC MTZJ11C UZ 11BSC MTZJ11C UZ 11BSC L2G31R0MN KZ 0 01F 3 9K J10EA030N 3 9K 1 10GJ 270 1 10 GJ1K J1EK1745 J11B0490N 75 1 10 GJ2 2K 1 10 GJ2 2K 16EM 10 MTZJ11C UZ 11BSC 16EM 10S 16EM 10S 1 10 GJ33K 75 CC5CA 2SA608 ECNP FCNP GCNP QT0379 A B DJ 680 2SC536 E NP F NP G NP QT0378 A B L2B9 220KN CJ39CA 1 10 GJ1K 2SA608 ECNP FCNP GCNP QT0379 A B 2SA608 ECN...

Страница 24: ...L CPU MK2 1 0 ADJUST DATA SYSTEM 000 SCREEN VOL CPU MK2 1 0 P F SCREEN VOL F Per regolar il livelli premere il tasto livello 7 DC 15 5V Tensione AGC 4 3 4 5V Sonda di uscita Sonda di ingresso Marker frequency Sweep ATT 0dB 176mVrms 75 IMPOSTAZIONE C644 IC201 pin48 IC201 pin45 Side b IC201 pin7 38 9MHz 20dB Regolazione Servendosi di T141 regolare P in modo che sia di ampiezza massima Forma d onda V...

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