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Sharp 81FW-57E Service Manual

Pal / secam system colour television
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Download this manual See also: Operating Manual
PAL / SECAM
ELECTRICAL SPECIFICATION.......................2
IMPORTANT SERVICE NOTES.......................3
SERVICE ADJUSTEMENTS.............................4
PRINTED WIRING BOARDS............................7
SHARP CORPORATION

SERVICE MANUAL

SYSTEM COLOUR TELEVISION
B/G D/K
MODELS
In the interests of user safety (required by safety
regulations in some countries) the set should restored
to its original condition and only parts identical to
those specified should be used.
CONTENTS
SCHEMATIC DIAGRAM..................................15
BLOCK DIAGRAM...........................................34
PART LIST........................................................37
DIGITAL MODULE CHANGE PROCEDURE...51
1
SEJB**FW57E00
Issued: 22nd May 00
DA-100W
CHASSIS
70FW-57E
81FW-57E
This document has been published to
be used for after sales service only.
70FW-57E
81FW-57E

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Summary of Contents for Sharp 81FW-57E

  • Page 1: Service Manual

    70FW-57E 81FW-57E SERVICE MANUAL SEJB**FW57E00 Issued: 22nd May 00 DA-100W CHASSIS PAL / SECAM SYSTEM COLOUR TELEVISION B/G D/K 70FW-57E 81FW-57E MODELS In the interests of user safety (required by safety regulations in some countries) the set should restored to its original condition and only parts identical to those specified should be used.

  • Page 2: Electrical Specifications

    70FW-57E 81FW-57E ELECTRICAL SPECIFICATIONS •Intermediate Frequencies •Power Input .......220V-240 Volts AC 50Hz L’............33.9MHz L, B/G, D/K, I..........38.9MHz •Power Consumption Normal Operating....170W (70FW57E) •Sound Carrier Trap 180W (81FW57E) L’............40.4MHz L, D/K...........32.4MHz Stand-by Operating........1W B/G.............33.4MHz I..............32.9MHz •Audio Power Output Rating •Adjacent Sound Carrier Trap Internal Left Speaker.....15W (MPO)

  • Page 3: Important Service Notes

    70FW-57E 81FW-57E IMPORTANT SERVICE NOTES Maintenance and repair of this receiver should be done by qualified service personnel only. SERVICING OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE When servicing the high voltage system, remove static charge from it by connecting a 10K ohm resistor in series with an insulated wire (such as test probe) between picture tube ground tag and high voltage lead.

  • Page 4: Service Adjustments

    70FW-57E 81FW-57E SERVICE ADJUSTMENTS All the adjustments required for this chassis will be done in Service Mode, except G2 and Focus. • • • • • G2 ADJUSTMENT 1. Receive cross hatch pattern signal. 155 V 2. Set contrast to 80/100 and brightness to 40/100.
  • Page 5 70FW-57E 81FW-57E 1− 1− 1− 1− HORIZONTAL SHIFT 1− a) Internal pattern signal will be displayed. b) When volume-up button is pressed, picture moves to the left. c) When volume-down button is pressed, picture moves to the right. d) Adjust the horizontal location to obtain picture centering (fig. 2).
  • Page 6 70FW-57E 81FW-57E 9− 9− 9− 9− S-CORRECTION 9− a) Internal pattern signal will be displayed. b) When volume-up button is pressed, upper and lower scanning decreases, and center scanning increases. c) When volume-down button is pressed, upper and lower scanning increases, and center scanning decreases.

  • Page 7: Description Of Schematic Diagram

    70FW-57E 81FW-57E DESCRIPTION OF SCHEMATIC DIAGRAM NOTE: SAFETY NOTE: 1. The unit of resistance «ohm»is omitted 1. DISCONNECT THE AC PLUG FROM THE AC (K=1000 ohms. M= Megaohm). OUTLET BEFORE REPLACING PARTS. 2. All resistors are 1/8 watt. unless otherwise noted.
  • Page 8 81FW-57E SCHEMATIC DIAGRAM. (SW1) (SW2) (OPC) GN0341 GN0341 GN0341 (RC) FB1002 GN0341 RBLN-0037 R1040 (AA) CM0672FC C730 C731 10nF 10nF C732 10nF C733 10nF C728 R708 100nF D707 D708 DX0502 DX0502 IC701 1N4005 1N4005 PST529 R770 C701 (1/2W) R771 D729...
  • Page 9 2.2uF 220pF FB702 D711 D720 LN0037 DX0539 X2401 R2402 KZ0035 FB703 DX0587 R1008 BYT52M B0214 R716 MR826 C723 LN0037 Q701 20.48MHz 2200uF +140V TX0198 R2408 (10V) S5F10N80 C720 IC2401 Q505 L705 2SC2412 EZ0258 R717 C712 SDA5275-3 D712 50uH 100uF IX1709 100pF Q2401 R2403...
  • Page 10 L350 3.3uH IC301 (CF) +16V TDA7480 C351 R350 C350 C352 R352 C354 220uF 100nF (HD) 100nF (ST) (FV) (CC) 100pF (SS) (25V) GN0341 GN0341 GN0241 R375 GN0341 GN0241 R351 L352 C353 P0278 C356 100nF 330nF C360 C361 560pF C451 C359 R447 R448 470nF...
  • Page 11 TH201A EX0547 RTUNH0139BM NOMBRE CODIGO 10-12-99 HASTA INF.494 09-12-99 HASTA INF.497 PLACA BASE 06-11-99 HASTA INF.469 MATERIAL ACABADO ESCALA 08-12-99 HASTA INF.492 20-01-00 HASTA INF.497 FECHA REVISIONES CZ2107BM DIS. DIB. CONT. V.B. MODELO FECHA SHARP 08-06-99 81FW57E/I ELECTRONICA ESPANA S.A.
  • Page 12 70FW-57E SCHEMATIC DIAGRAM. (SW1) (SW2) (OPC) GN0341 GN0341 GN0341 (RC) FB1002 GN0341 RBLN-0037 R1040 (AA) CM0672FC C730 C731 10nF 10nF C732 10nF C733 10nF C728 R708 100nF D707 D708 DX0502 DX0502 IC701 1N4005 1N4005 PST529 R770 C701 (1/2W) R771 D729 100nF XZ0229 470K...
  • Page 13 C1032 C711 33nF 100nF 2.2uF 220pF FB702 D711 D720 LN0037 DX0539 X2401 R2402 KZ0035 FB703 DX0587 R1008 BYT52M B0214 R716 MR826 LN0037 C723 20.48MHz Q701 2200uF +140V TX0198 R2408 (10V) IC2401 Q505 S5F10N80 C720 2SC2412 L705 R717 C712 EZ0258 SDA5275-3 D712 50uH 100uF...
  • Page 14 L350 3.3uH IC301 (CF) +16V TDA7480 C351 C352 R350 C350 R352 C354 220uF 100nF 100nF (HD) (FV) (CC) (ST) (SS) 100pF (25V) GN0341 GN0241 R375 GN0341 GN0241 GN0341 R351 L352 C353 P0278 C356 100nF 0037 330nF C360 560pF C361 R447 R448 C451 C359...
  • Page 15 TH201A EX0547 RTUNH0139BM NOMBRE CODIGO 10-12-99 HASTA INF.494 09-12-99 HASTA INF.497 PLACA BASE 06-11-99 HASTA INF.469 MATERIAL ACABADO ESCALA 08-12-99 HASTA INF.492 20-01-00 HASTA INF.497 REVISIONES FECHA CZ2107BM DIS. DIB. V.B. CONT. MODELO FECHA SHARP 08-06-99 70FW57E/I ELECTRONICA ESPANA S.A.
  • Page 16 70FW-57E 81FW-57E 7270 DIGITAL MODULE SCHEMATIC DIAGRAM. +3.3V C6044 C6045 27pF 27pF +3.3V X6002 27MHz R6118 L6003 B0242BM Q6006 3.3uH 100K 2SC2412 C6041 100nF R6117 100K +3.3V R6082 L6001 C6001 R6087 3.3uH C6003 C6004 10nF R6095 C6013 C6002 100nF 10nF...
  • Page 17 70FW-57E 81FW-57E (KA) GN0842 C6018 R6005 15nF R6006 C6019 15nF C6020 R6007 C6014 15nF 3.3uF L6006 3.3uH C6231 C6016 C6015 100pF 22uF 100nF (16V) C6017 C6233 22nF 100pF C6232 100pF C6082 100nF D6014 D6013 C5V6 BOUT R6128 DX0551 EX0546 GOUT...
  • Page 18 70FW-57E 81FW-57E 7295 DIGITAL MODULE SCHEMATIC DIAGRAM. L6009 Q6006 +3.3V +3.3V C6044 C6045 3.3uH 2SC2412 27pF 27pF C6006 X6002 C6034 470uF C6033 10uF L6001 27 MHz C6041 (16V) 3.3uH R6118 B0242BM (6.3V) 10nF 100nF L6003 100K 3.3uH R6117 C6007 C6001...
  • Page 19 70FW-57E 81FW-57E C6018 R6005 15nF R6006 C6019 15nF C6020 R6007 C6014 15nF 3.3uF (KA) L6006 3.3uH GN0842 C6016 C6015 22uF 100nF (16V) C6017 22nF D6013 EX0540BM R6128 BOUT GOUT D6014 ROUT R6089 R6032 SVMOUT XREF IC6003 VERT- R6129 VERT- DDP3310-E4...
  • Page 20 70FW-57E 81FW-57E CRT MODULE SCHEMATIC DIAGRAM. +12V R5438 C891 R854 R855 100pF R857 Q853 GN0841CE TX0142 BC547-B Q855 C854 TX0143 10pF BC557-B R858 R1801 Q852 TX0142 R860 BC547-B +12V +12V C892 R864 R867 R5439 100pF SENS R869 Q857 TX0142 BC547-B...
  • Page 21 70FW-57E 81FW-57E IC850 TDA6111Q VB76ESF3144*N 32" R888 VB66ESF0244*N 28" R887 1/2W (1/2W) (MA) H.V. 27.5 KV C881 560pF C887 V0936CE 32" R865 C871 D864 V0103BM 28" 220uF R850 10nF (16V) DX0045 FB850 D865 C880 R880 C5V1 R863 33nF R862 EX0408...
  • Page 22 BA10358 C1613 220uF (25V) NOMBRE CODIGO 21-01-00 HASTA INF.492 PLACA FOCO 09-12/99 HASTA INF. 492 MATERIAL ACABADO ESCALA 09-07-99 HASTA INF. 272 09-07-99 HASTA INF. 247 FECHA REVISIONES DIS. DIB. CONT. V.B. FECHA MODELO SHARP 22-05-99 81FW57E ELECTRONICA ESPANA S.A.
  • Page 23 21-01-00 HASTA INF. 447 21-10-99 HASTA INF. 447 PLACA POWER 26-07-99 HASTA INF. 314 MATERIAL ACABADO ESCALA 09-07-99 HASTA INF. 272 09-07-99 HASTA INF. 258 FECHA REVISIONES DIS. DIB. V.B. CONT. MODELO FECHA SHARP 81FW57E 22-05-99 ELECTRONICA ESPANA S.A. 70FW57E...
  • Page 24 (DF) 10nF (HD) (CC) (FV) GN0341 (SS) GN0241 GN0241 GN0341 NOMBRE CODIGO PLACA A/V MATERIAL ACABADO ESCALA 21-01-00 HASTA INF. 272 09-07-99 HASTA INF. 272 REVISIONES FECHA V.B. DIS. DIB. CONT. FECHA MODELO SHARP 81FW57E 22-05-99 ELECTRONICA ESPANA S.A. 70FW57E...
  • Page 25                                           ...
  • Page 26 70FW-57E 81FW-57E 81FW-57E BLOCK DIAGRAM 81FW-57E BLOCK DIAGRAM SF 201 TH 201 FM AUDIO SF 202 IC 201 TUNER CVBS TDA 4470 SF 203 21 PINS 21 PINS AV-2 MAIN POWER 21 PINS M 6701 + CH - VOL -...
  • Page 27 F.B.T. FOCUS EMULATOR D 6 0 5 Title BLOCK DIAGRAM 81FW-57E. HORIZ. DEFLECTION S i z e D o c u m e n t N u m b e r R e v 8 1 F W - 5 7 E 9 4 9 J B 0 0...
  • Page 28 7 FW-57E BLOCK DIAGRAM CENTRAL +16V SPEAKER MODULE SF 201 IC 305 IC1302 C E N T E R TH 201 FM AUDIO -16V MSP 3410 D SF 202 PERIPHERICS IC 201 TUNER CVBS AUDIO L/R +16V TDA 4470 SF 203 IC 301 A U D I O O U T L Q 304...
  • Page 29 Digitally signed by Castillo, Fco. Digitally signed by Castillo, Fco. 15-12-2000 Hasta INFO 985 cn=Adolfo Fernandez, ou=CAD GLOBAL NETWORK, o=SHARP, c=ES cn=Castillo, Fco., ou=SEES, o=Engineering Dept., c=ES cn=Castillo, Fco., ou=SEES, o=Engineering Dept., c=ES Date: 2001.05.04 13:18:33 Z Date: 2001.05.04 15:04:11 +01'00' Date: 2001.05.04 15:04:40 +01'00'...

  • Page 30: Part List

    70FW-57E 81FW-57E REF No. PARTS DESCRIPTION PART LIST SN CODE EX CODE IC 1002 CH-IX1708CJE5 EPROM+SOFT WITH K7295 S AR REPLACEMENT PARTS IC 1003 RH-IX1603BMZZ NVM X24645S8 XICOR SMD S AS IC 1004 RH-IX1603BMZZ NVM X24645S8 XICOR SMD S AS...
  • Page 31 70FW-57E 81FW-57E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE D 1006 RH-EX0546BMZZ ZENER DIODE TZMC5V6 TFK SMD S AA D 0410 RH-EX0549BMZZ ZENER DIODE TZMC7V5 TFK SMD S AA D 1007...
  • Page 32 70FW-57E 81FW-57E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE C 0530 VCKYTV1HF103Z CERAM C 10NF 50V 2125SMD S AA C 1017 VCKYTV1HF333Z CERAM C 33NF 50V 2125SMD S AA C 0533...
  • Page 33 70FW-57E 81FW-57E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE C 0530 VCKYTV1HF103Z CERAM C 10NF 50V 2125SMD S AA C 1017 VCKYTV1HF333Z CERAM C 33NF 50V 2125SMD S AA C 0533...
  • Page 34 70FW-57E 81FW-57E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE R 0313 VRS-TV1JD102J 2125 1KOHM 5% 1/10W SMD S AA R 0453 VRS-TV1JD183F 2125 18KOHM 1% 1/10W SMD S AA R 0314...
  • Page 35 70FW-57E 81FW-57E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE R 0787 VRS-TV1JD473J 2125 47KOHM 5% 1/10W SMD S AA R 0614 VRD-RA2HD103J RES 10KOHM 5% 1/2W S AA R 0788 VRS-TV1JD183J...
  • Page 36 70FW-57E 81FW-57E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE JF 0014 RH-DX0045BMZZ DIODE 1N4148 S AA RMPTB0002BMV0 RESISTOR+FERRITE SET 0.33 OHM 5% 1W S AA JF 0020 VRS-TV1JD000J 2125 0 OHM 5% 1/10W SMD...
  • Page 37 70FW-57E 81FW-57E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE (CN0004 QJAKJ0047CEZZ EARPHONE JACK HSJ0998-72 S AA C 0857 VCCCPA1HH100D CERAM C 10PF 05% 50V S AA (FV0000 QPLGN0241CEZZ PLUG S AA...
  • Page 38 70FW-57E 81FW-57E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE R 0882 VRD-RA2BE101J RES 100 OHM 5% 1/8W S AA R 0883 VRS-VV3DB683J MET OX RES 68KOHM 5% 2W S AA TRANSISTORS...
  • Page 39 70FW-57E 81FW-57E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE Q 6022 VS2SA1037KQ-1 TRT BC807 SMD S AA C 6027 VCEAGA0JW477M ELEC C 470UF 20% 6,3V S AA Q 6023 VS2SC2412KQ-1 TRT 2SC2412 ROHM...
  • Page 40 70FW-57E 81FW-57E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE R 6089 VRS-TV1JD122J 2125 1,2KOHM 5% 1/10W SMD S AA R 6004 VRS-TV1JD221J 2125 220 OHM 5% 1/10W SMD S AA R 6090...
  • Page 41 70FW-57E 81FW-57E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE Q 6025 VS2SC2412KQ-1 TRT 2SC2412 ROHM S AA C 6031 VCCCTV1HH3R3C CERAM C 3,3PF 50V 2125SMD S ** Q 6026 VS2SC2412KQ-1 TRT 2SC2412 ROHM...
  • Page 42 70FW-57E 81FW-57E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE R 6016 VRS-TV1JD101J 2125 100 OHM 5% 1/10W SMD S AA R 6128 VRS-TV1JD000J 2125 0 OHM 5% 1/10W SMD S AA...
  • Page 43 70FW-57E 81FW-57E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE J 0011 VRC-MA2HG681J SOLID R 680 OHM 5% 1/2W S AA GDORF1051BMSB DOOR 81FW57E S AB PKAI-1083BM00 DOOR LATCH 70FW57E S AC...
  • Page 44 70FW-57E 81FW-57E DIGITAL MODULE CHANGE PROCEDURE: In case a change of Digital Board is required (K7270 <--> K7295) consider the below detailed information: JL11 CURRENT CURRENT MODEL BO ARD (See Fig.1) EPROM NVM F ILE CH-IX1708CJE0 W IRE FROM 70FW 57E...

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