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Sharp 72GF-66E Service Manual

Pal system colour television da-100w chassis
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ELECTRICAL SPECIFICATION.......................3
IMPORTANT SERVICE NOTES.......................4
ADJUSTMENTS PROCEDURES.....................5
PRINTED WIRING BOARDS..........................10
COMPONENT LOCATION TABLES...............17

SHARP CORPORATION

SERVICE MANUAL

PAL SYSTEM COLOUR TELEVISION
MODEL
72GF-66E
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...................................27
STEREO LED FLASHING CODE....................41
BLOCK DIAGRAM...........................................42
PARTS LISTING..............................................44
1
SEJB72GF66E00
Issued: 21st May 2001
DA-100W
CHASSIS
DE/ES/GG/IT/CH
This document has been published to
be used for after sales service only.
72GF-66E

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  • Page 1: Table Of Contents

    ELECTRICAL SPECIFICATION...3 IMPORTANT SERVICE NOTES...4 ADJUSTMENTS PROCEDURES...5 PRINTED WIRING BOARDS...10 COMPONENT LOCATION TABLES...17 SHARP CORPORATION SERVICE MANUAL DA-100W PAL SYSTEM COLOUR TELEVISION MODEL 72GF-66E 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 72GF-66E SERVICE MANUAL UPDATE LOG SHEET Technical Report No. Cause / Solution Technical Bulletin No. Use this page to keep any special servicing information as Technical Report (Bulletin), Technical Information, etc. If only part number changes are required, just change part number directly the part number in the Parts Listing Section.

  • Page 3: Electrical Specification

    L, D/K, I...30.9MHz B/G...31.9MHz Aerial Input Impedance VHF/UHF ... 75 ohm Unbalanced Tuning Ranges ... 48.25 MHz thru 855.25 MHz VHF: E2-E12 CH, F2-F10, IR A-IR J CH S1-S41 CH (Hiperband) UHF: E21-E69 CH, I21-I69 CH EN 61000-3-2 WARNING 72GF-66E...

  • Page 4: Important Servicing Notes

    72GF-66E IMPORTANT SERVICING NOTES Only qualified service personnel are allowed to carry out maintenance and repair of this receiver. SERVICING OF HIGH VOLTAGE SYSTEM AND CRT It is important that the static charge is removed from the high voltage system when carrying out work on the receiver.

  • Page 5: Adjustments Procedures

    Alter NVM Position Alter NVM Value Teletext Mix Mode Contrast Teletext Contrast OSD Contrast DVCO Adjustment (Only PAL) DVCO Adjustment (Only NTSC) Luma croma delay AGC Adjustment AFT Adjustment (BG-I-L) AFT Adjustment (L’) OPC Value Auto Installation On/Off 72GF-66E Fig.1...
  • Page 6 72GF-66E The following geometry adjustments can be carried out. Detailed instructions on how to execute these are given on the following pages Horizontal Horizontal Shift E-W Width Pin Phase Pin Amp Upper Corner Amplitude Lower Corner Symmetry Just in case the TV set requires a full geometries adjustment, please proceed first with Vertical according to the above order, and after that, adjust Horizontal according to the above order.
  • Page 7 Adjust the S Correction so that the picture symmetrical between the top, centre and bottom. The effect of this adjustment is shown in figure 12. When the volume up button is pressed, the top and bottom scanning increases and the centre scanning decreases. 72GF-66E Fig.7 Fig.8 Fig.9 Fig.10...
  • Page 8 72GF-66E When the volume down button is pressed the top and bottom scanning decreases and the centre scanning increases. Press the stand-by button on the remote control to store. Vertical Shift Adjust the Vertical Shift so that the picture is centred.
  • Page 9 5. If another NVM value has to be changed, use the channel down button to select the page or position and repeat as necessary. Note: DO NOT change any NVM data, unless you have been advised to do so by a Sharp representative. If data is incorrectly changed, serious damage may occur to the receiver. Contrast Adjustments...
  • Page 10 72GF-66E MOTHER UNIT PRINTED WIRING BOARD (F7293N5A). Component side. R778 LP701 R703 S702 C701 R721 T3.15AH (AA) C746 D701 C703 D704 D702 C704 R715 CAUTION THE ACTIVE SECTION IS INDICATED WITH C710 THE " " SYMBOL (PW) C713 R716 Q701...
  • Page 11 100Hz (YB) (YA) J253 J255 J323 R464 J269 J331 J270 C433 R418 1 (FV) R419 R425 FB303 R426 R424 J274 72GF-66E C353 L352 C361 C363 IC301 C351 C368 C373 IC302 R359 C382 C377 IC1005 C1031 C332 JL10 C1001 L301 IC305 JL6.
  • Page 12 72GF-66E MOTHER UNIT PRINTED WIRING BOARD (F7293N5A). Copper side. R353 L352 C359 R352 C354 C350 C364 C375 L353 C373 C368 R357 C378 C376 C379 R356 C369 C374 R358 C367 IC302 R378 Q304 JF52 J351 R372 J352 J305 J341 J342 IC1002...
  • Page 13 Q605 C640 JF56 JF57 D605 D603 D604 C642 C611 C611A C641 JF51 D516 JF50 L605 C648 L612 D609 L604 C632 72GF-66E R778 LP701 R703 C730 S701 J344 R721 F701 D701 C746 D702 C704 C703 D704 D703 C710 C711 C738 D730...
  • Page 14 72GF-66E CRT MODULE UNIT PRINTED WIRING BOARD (F7269N3). Component side. Q857 C891 R5438 C854 R857 Q853 R860 R863 R1801 C861 IC850 R880 C871 R862 R865 D864 R897 R885 C856 Q861 C852 IC852 D852 Q851 FRONT A/V UNIT PRINTED WIRING BOARD.
  • Page 15 (CC) (FV) (SS) F7306BMN0 R5439 C892 C862 R868 Q857 Q856 C888 C851 C891 R5438 Q854 R857 C854 R854 C863 Q852 R1801 C880 IC850 R880 D865 R862 R865 R897 D864 IC852 C884 C857 R884 R876 C853 D852 Q851 C428 L318 72GF-66E...
  • Page 16 72GF-66E DINAMIC FOCUS UNIT PRINTED WIRING BOARDS (F7271N3). C1704 R1710 D1703 D1601 Q1601 D1602 FOCO D1606 DYN.INPUT ESPA¥A T1701 C1701 CAUTION THE ACTIVE SECTION IS INDICATED WITH THE " " SYMBOL R1628 R1604 R1605 R1608 SYMBOL " " WITH INDICATED...

  • Page 17: Printed Wiring Boards

    C6014 C6016 R6005 R6006 R6007 R6117 C6045 L6017 C6031 C6025 C6035 IC6005 R6052 ESPA¥A (AA) C4746 72GF-66E IC6003 IC6002 C6079 IC6001 C6030 Q6003 LOCATION PARTS TABLE. Ref No 5816 17500 (AA) 84048 17500 C4701 26390 11785 C4746 63728 16103 L4701...
  • Page 18 72GF-66E POWER SWITCH UNIT PRINTED WIRING BOARDSM (F7305N0B). Component side. R6751 D6702 S6701 D6701 Copper side. R6751 D6702 D6701...
  • Page 19 11938 R1325 45974 -3048 R1327 5334 10160 R1328 21590 4572 R1329 9398 42926 R1330 71120 42672 R1331 R1334 R1335 R1717 72GF-66E C1301 C1303 L1307 L1301 L1308 C1337 L1302 C1335 C1336 R1316 C1345 C1339 R1318 Q1707 C1352 C1366 R1325 R1334 C1367...
  • Page 20 72GF-66E MOTHER UNIT (F7293N5A) PWB PARTS LOCATION TABLES. Component Side. Ref No Ref No Ref No Ref No Ref No Ref No...
  • Page 21 72GF-66E MOTHER UNIT (F7293N5A) PWB PARTS LOCATION TABLES. Component Side. Ref No Ref No Ref No Ref No Ref No...
  • Page 22 72GF-66E MOTHER UNIT (F7293N5A) PWB PARTS LOCATION TABLES. Copper Side. Ref No Ref No Ref No Ref No Ref No Ref No...
  • Page 23 72GF-66E MOTHER UNIT (F7293N5A) PWB PARTS LOCATION TABLES. Copper Side. Ref No Ref No Ref No Ref No Ref No Ref No...
  • Page 24 72GF-66E CRT MODULE UNIT PWB (F7269N3) PARTS LOCATION TABLES. Component Side. Copper side No parts. Ref No Ref No Ref No Ref No Ref No...
  • Page 25 53086 REF1 236474 T1602 151384 T1701 20828 TOR1 13462 TOR2 132334 TOR3 232664 TOR4 232918 TOR5 131318 TOR6 18542 72GF-66E Copper side Ref No 14478 C1705 54864 29718 C1706 46482 38100 38862 D1603 84836 42926 38862 D1604 84836 40640 56134...
  • Page 26 72GF-66E DIGITAL MODULE UNIT (F7295N0B) PWB PARTS LOCATION TABLES. Component Side. Copper side Ref No Ref No Ref No Ref No Ref No...
  • Page 27 50V. » ( ) ARE CAUTION This circuit diagram is original one, therefore there may be light difference from yours. 4 Vp-p 31.25 KHz 3.3V 100Hz 1.15 Vp-p 31.25KHz 72GF-66E 350 Vp-p 100Hz 45 Vp-p 113 KHz FM 400Hz...
  • Page 28 72GF-66E SCHEMATIC DIAGRAM OF MOTHER UNIT (K7293N5A), 00 Version. Page 30...

  • Page 29: Schematic Diagram

    SCHEMATIC DIAGRAM OF MOTHER UNIT (K7293N5A), 00 Version. Page 31 72GF-66E...
  • Page 30 72GF-66E SCHEMATIC DIAGRAM OF MOTHER UNIT (K7293N5A), 00 Version.
  • Page 31 SCHEMATIC DIAGRAM OF MOTHER UNIT (K7293N5A), 00 Version. Page 72GF-66E...
  • Page 32 72GF-66E SCHEMATIC DIAGRAM OF CRT MODULE UNIT (F7269N3), 00 Version. Digitally signe Digitally signed by Adolfo Fernandez cn=Adolfo Fernandez, ou=CAD GLOBAL NETWORK, o=SHARP, c=ES cn=Castillo, F Date: 2001.05.04 13:22:44 Z Date: 2001.05 Reason: This document is ready for approval Reason: I hav...
  • Page 33 Digitally signed by Castillo, Fco. Digitally signed by Castillo, Fco. cn=Castillo, Fco., ou=SEES, o=Engineering Dept., c=ES cn=Castillo, Fco., ou=SEES, o=Engineering Dept., c=ES Date: 2001.05.04 15:09:31 +01'00' Date: 2001.05.04 15:10:37 +01'00' Reason: I have reviewed this document Reason: I have reviewed this document 72GF-66E...
  • Page 34 72GF-66E SCHEMATIC DIAGRAM OF FRONT A/V UNIT (F7306), 00 Version.
  • Page 35 72GF-66E SCHEMATIC DIAGRAM OF DINAMIC FOCUS UNIT (F7271), 00 Version.
  • Page 36 12 X 100 10 X 100 IC6002 SDA9400 IX1681BM Digitally signed by Adolfo Fernandez cn=Adolfo Fernandez, ou=CAD GLOBAL NETWORK, o=SHARP, c=ES Date: 2001.05.04 13:19:10 Z Reason: This document is ready for approval Digitally sign cn=Castillo, Date: 2001.0 Reason: I ha...
  • Page 37 Castillo, Fco. Digitally signed by Castillo, Fco. Castillo, Fco., ou=SEES, o=Engineering Dept., c=ES cn=Castillo, Fco., ou=SEES, o=Engineering Dept., c=ES te: 2001.05.04 15:05:27 +01'00' Date: 2001.05.04 15:06:17 +01'00' ason: I have reviewed this document Reason: I have reviewed this document 72GF-66E...
  • Page 38 72GF-66E SCHEMATIC DIAGRAM OF LINE FILTER UNIT (F7338N0), 00 Version.
  • Page 39 72GF-66E SCHEMATIC DIAGRAM OF POWER SUPPLY UNIT (F7305), 00 Version.
  • Page 40 72GF-66E SCHEMATIC DIAGRAM OF AUDIO AMPLIFIER UNIT (F7304NOB), 00 Version.

  • Page 41: Stereo Led Flashing Code

    3. VPC failure: 66% ON, 33% OFF for four times and OFF for a second. 4. SAA4956 failure: 66% ON, 33% OFF for six times and OFF for a second. 5. DDP failure: 66% ON, 33% OFF for seven times and OFF for a second. 72GF-66E...

  • Page 42: Block Diagram

    72GF-66E TH 201 TUNER MAIN POWER M 6701 + CH - DETECTOR S 6 7 0 1 F 6 7 0 1 IC 702 Micro Proc. A D G C O I L P O W E R S T - B Y...
  • Page 43 TDA 6111A H.V. FOCUS Title BLOCK DIAGRAM 72GF-66E. Size D o c u m e n t N u m b e r 7 2 G F - 6 6 E 0 0 1 9 J B 0 0 Date:...

  • Page 44: Parts Listing

    72GF-66E PARTS LISTING REPLACEMENT PARTS Replacement parts which have special safety characteristics are identified in this manual. Electrical components having such features are identified in the Replacement Part List. The use of a substitute replacement part which does not have the same safety characteristics as the factory recommended is not permitted.
  • Page 45 REF No. PARTS DESCRIPTION PACKAGED CIRCUITS COILS REF No. PARTS DESCRIPTION SN CODE EX CODE CERAMIC FILTERS TRANSFORMERS CAPACITORS 72GF-66E SN CODE EX CODE...
  • Page 46 72GF-66E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE...
  • Page 47 REF No. PARTS DESCRIPTION RESISTORS REF No. PARTS DESCRIPTION SN CODE EX CODE 72GF-66E SN CODE EX CODE...
  • Page 48 72GF-66E REF No. PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE...
  • Page 49 72GF-66E PARTS DESCRIPTION REF No. PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE MISCELLANEOUS PARTS MISCELLANEOUS PARTS...

  • Page 50: C505

    72GF-66E REF No. PARTS DESCRIPTION J 0352 VRS-TV1JD000J 2125 0 OHM 5% 1/10W SMD J 0360 VRS-TV1JD000J 2125 0 OHM 5% 1/10W SMD J 0361 VRS-TV1JD000J 2125 0 OHM 5% 1/10W SMD J 0701 VCKYTV1HF104Z CERAM C 100NF 50V 2125SMD...
  • Page 51 REF No. PARTS DESCRIPTION MISCELLANEOUS PARTS PWB-C DINAMIC FOCUS 72GF66E INTEGRATED CIRCUITS TRANSISTORS TRANSFORMERS CAPACITORS RESISTORS REF No. PARTS DESCRIPTION SN CODE EX CODE MISCELLANEOUS PARTS PWB-D INTEGRATED CIRCUITS TRANSISTORS DIODES 72GF-66E SN CODE EX CODE DIGITAL MODULE UNIT...
  • Page 52 72GF-66E REF No. PARTS DESCRIPTION PACKAGED CIRCUITS COILS CAPACITORS REF No. PARTS DESCRIPTION SN CODE EX CODE RESISTORS SN CODE EX CODE...
  • Page 53 REF No. PARTS DESCRIPTION MISCELLANEOUS PARTS REF No. PARTS DESCRIPTION SN CODE EX CODE PWB-E AUDIO AMPLIFIER INTEGRATED CIRCUITS TRANSISTORS COILS CAPACITORS RESISTORS 72GF-66E SN CODE EX CODE...
  • Page 54 72GF-66E REF No. PARTS DESCRIPTION MISCELLANEOUS PARTS PWB-F FRONTAL POWER UNIT DIODES CAPACITORS RESISTORS MISCELLANEOUS PARTS PWB-F FRONTAL A/V UNIT COILS CAPACITORS RESISTORS MISCELLANEOUS PARTS REF No. PARTS DESCRIPTION SN CODE EX CODE PWB-E LINE FILTER UNIT COILS CAPACITORS MISCELLANEOUS PARTS...
  • Page 55 72GF-66E...
  • Page 56 72GF-66E SHARP ELECTRONICA ESPAÑA S.A. TV Division Engineering Dept. Polígono Industrial Can Sant Joan Sant Cugat del Vallès Barcelona Spain No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

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