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Sharp 72FF-57E Service Manual

Da-100w chassis
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PAL / SECAM
72FF-57E
81FF-57E
ELECTRICAL SPECIFICATION.......................2
IMPORTANT SERVICE NOTES.......................3
SERVICE ADJUSTEMENTS............................4
PRINTED WIRING BOARDS...........................8
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..............................23
BLOCK DIAGRAM.......................................41
CHASSIS LAYOUT DIAGRAM....................44
PART LIST...................................................46
1
SEJB**FF57E00
Issued: 21st July '00
DA-100W
CHASSIS
72FF-57E
81FF-57E
This document has been published to be
used for after dales service only.
72FF-57E
81FF-57E

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Summary of Contents for Sharp 72FF-57E

  • Page 1: Table Of Contents

    72FF-57E 81FF-57E SERVICE MANUAL SEJB**FF57E00 Issued: 21st July ‘00 DA-100W CHASSIS PAL / SECAM SYSTEM COLOUR TELEVISION B/G D/K 72FF-57E 72FF-57E 81FF-57E MODELS 81FF-57E 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 Specification

    72FF-57E 81FF-57E ELECTRICAL SPECIFICATIONS •Picture Intermediate Frequencies •Power Input .......220V-240 Volts AC 50Hz L’............33.9MHz L, B/G, I..........38.9MHz •Power Consumption Normal Operating....300W (72FF57E) •Sound Carrier Trap 142W (81FF57E) (Method IEC60107) L’............40.4MHz Stand-by Operating........3W L............32.4MHz B/G............33.4MHz I............32.9MHz •Audio Power Output Rating •Adjacent Sound Carrier Trap Internal Left Speaker.....23W (MPO)

  • Page 3: Important Service Notes

    72FF-57E 81FF-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 Adjustements

    72FF-57E 81FF-57E SERVICE ADJUSTMENTS All the adjustments required for this chassis will be done in Service Mode, except G2 and Focus. • • • • • G2 ADJUSTMENT 20 V A 2 ms TVF1 B 50 ms 95.40 V 1. Receive cross hatch pattern signal.
  • Page 5 72FF-57E 81FF-57E The required adjustments can then be made from the Remote Control Unit. The only buttons required are the following: Up/Down-channel for movement in adjustment options menu; Up/Down-volume are used to carry out an adjustment in said menu; ON/OFF is used to memorize a new adjustment.
  • Page 6 72FF-57E 81FF-57E 4− 4− 4− 4− 4− PIN AMPLITUDE a) Internal pattern signal will be displayed. b) When volume-up button is pressed, slide pincushion changes from pincushion to barrel shape. c) When volume-down button is pressed, slide pincushion changes from pincushion to barrel shape.
  • Page 7 72FF-57E 81FF-57E 13− 13− 13− 13− 13− VERTICAL SHIFT a) Internal pattern signal will be displayed. b) When volume-up button is pressed, picture moves up. c) When volume-down button is pressed, picture moves down. d) Adjust the horizontal location to obtain picture centering (fig. 13).
  • Page 8 72FF-57E 81FF-57E MOTHER UNIT 1 PRINTED WIRING BOARD. Componet side.
  • Page 9 72FF-57E 81FF-57E MOTHER UNIT 1 PRINTED WIRING BOARD. Component side.
  • Page 10 72FF-57E 81FF-57E MOTHER UNIT 1 PRINTED WIRING BOARD. Copper side.
  • Page 11 72FF-57E 81FF-57E MOTHER UNIT 1 PRINTED WIRING BOARD. Copper side.
  • Page 12 72FF-57E 81FF-57E MOTHER UNIT 2 (POWER/DEF) PRINTED WIRING BOARD. Comp. side.
  • Page 13 72FF-57E 81FF-57E MOTHER UNIT 2 (POWER/DEF) PRINTED WIRING BOARD. Comp. side.
  • Page 14 72FF-57E 81FF-57E MOTHER UNIT 2 (POWER/DEF) PRINTED WIRING BOARD. Copper side.
  • Page 15 72FF-57E 81FF-57E MOTHER UNIT 2 (POWER/DEF) PRINTED WIRING BOARD. Copper side.
  • Page 16 72FF-57E 81FF-57E CRT SOCKET UNIT PRINTED WIRING BOARD. Component side. FRONT A/V UNIT PRINTED WIRING BOARD. Component side.
  • Page 17 72FF-57E 81FF-57E CRT SOCKET UNIT PRINTED WIRING BOARDS. Copper side. FRONT A/V UNIT PRINTED WIRING BOARD. Copper side.

  • Page 18: Printed Wiring Boards

    72FF-57E 81FF-57E POWER SWITCH UNIT PRINTED WIRING BOARDS.
  • Page 19 72FF-57E 81FF-57E SOUND OUTPUT UNIT PRINTED WIRING BOARDS.
  • Page 20 72FF-57E 81FF-57E SCART UNIT PRINTED WIRING BOARD. Component side.
  • Page 21 72FF-57E 81FF-57E SCART UNIT PRINTED WIRING BOARD. Copper side.
  • Page 22 72FF-57E 81FF-57E 100Hz UNIT PRINTED WIRING BOARDS.
  • Page 23 72FF-57E 81FF-57E DESCRIPTION OF SCHEMATIC DIAGRAM SAFETY NOTE: 1. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE REPLACING PARTS. 616 Vp-p 63.75KHz 2. SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS POTENTIAL SHOCK HAZARDS WHEN THE CHASSIS IS OPERATING. 5.6 Vp-p 31.25KHz IMPOTANT SAFETY NOTE: PARTS MARKED WITH «...
  • Page 24 72FF-57E 81FF-57E MOTHER UNIT 1 SCHEMATIC DIAGRAM.
  • Page 25 72FF-57E 81FF-57E MOTHER UNIT 1 SCHEMATIC DIAGRAM.
  • Page 26 72FF-57E 81FF-57E MOTHER UNIT 1 SCHEMATIC DIAGRAM.
  • Page 27 72FF-57E 81FF-57E MOTHER UNIT 1 SCHEMATIC DIAGRAM.
  • Page 28 72FF-57E 81FF-57E 72FF-57E MOTHER UNIT 2 SCHEMATIC DIAGRAM.
  • Page 29 72FF-57E 81FF-57E 72FF-57E MOTHER UNIT 2 SCHEMATIC DIAGRAM.
  • Page 30 72FF-57E 81FF-57E 81FF-57E MOTHER UNIT 2 SCHEMATIC DIAGRAM.
  • Page 31 72FF-57E 81FF-57E 81FF-57E MOTHER UNIT 2 SCHEMATIC DIAGRAM.
  • Page 32 72FF-57E 81FF-57E 72FF-57E CRT SOCKET UNIT SCHEMATIC DIAGRAM.
  • Page 33 72FF-57E 81FF-57E 81FF-57E CRT SOCKET UNIT SCHEMATIC DIAGRAM.
  • Page 34 72FF-57E 81FF-57E POWER SWITCH UNIT SCHEMATIC DIAGRAM.
  • Page 35 72FF-57E 81FF-57E FRONT A/V UNIT SCHEMATIC DIAGRAM.
  • Page 36 72FF-57E 81FF-57E SCART UNIT SCHEMATIC DIAGRAM.
  • Page 37 72FF-57E 81FF-57E SCART UNIT SCHEMATIC DIAGRAM.
  • Page 38 72FF-57E 81FF-57E 100Hz UNIT SCHEMATIC DIAGRAM.
  • Page 39 72FF-57E 81FF-57E 100Hz UNIT SCHEMATIC DIAGRAM.
  • Page 40 72FF-57E 81FF-57E SOUND OUTPUT UNIT SCHEMATIC DIAGRAM.
  • Page 41 72FF-57E 81FF-57E 72FF-57E BLOCK DIAGRAM.
  • Page 42 72FF-57E 81FF-57E 81FF-57E BLOCK DIAGRAM.
  • Page 43 72FF-57E 81FF-57E 81FF-57E BLOCK DIAGRAM.
  • Page 44 72FF-57E 81FF-57E PWBs LAYOUT.

  • Page 45: Schematic Diagram

    72FF-57E 81FF-57E SCHEMATIC DIAGRAMS CONECTION.

  • Page 46: Part List

    72FF-57E 81FF-57E PART LIST PARTS DESCRIPTION SN CODE EX CODE REPLACEMENT PARTS Q 0202 VS2SC2412KQ-1 TRT 2SC2412 ROHM S AA Replacement parts which have special safety characteristics are identi- Q 0207 VS2SC2412KQ-1 TRT 2SC2412 ROHM S AA fied in this manual. Electrical components having such features are iden-...
  • Page 47 72FF-57E 81FF-57E PARTS DESCRIPTION PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE C 0327 VCKYTV1HB102K CERAM C 1NF 50V 2125SMD S AA COILS C 0350 VCKYTV1HF104Z CERAM C 100NF 50V 2125SMD S AA L 0202 VP-DF100K0000 PEAK COIL 10UH 10%...
  • Page 48 72FF-57E 81FF-57E PARTS DESCRIPTION PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE R 0212 VRS-TV1JD472J 2125 4.7KOHM 5% 1/10W SMD S AA R 0466 VRS-TV1JD000J 2125 0 OHM 5% 1/10W SMD S AA R 0520 VRD-RA2BE222J RES 2,2KOHM 5% 1/8W...
  • Page 49 72FF-57E 81FF-57E PARTS DESCRIPTION PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE RJ 0007 VRS-TV1JD000J 2125 0 OHM 5% 1/10W SMD S AA D 0530 RH-DX0551BMZZ DIODE LL4148 TFK SMD S AA RJ 0009 VRS-TV1JD000J 2125 0 OHM 5% 1/10W SMD...
  • Page 50 72FF-57E 81FF-57E PARTS DESCRIPTION PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE T 0601 RTRNF2067BMZZ FBT NIHON CERAMICS 32FLAT (81FF57E) S AX C 0729 VCEAGA1AW477M ELEC C 470UF 20% 10V S AA ! ! ! T 0602 RTRNZ0553BMZZ...
  • Page 51 72FF-57E 81FF-57E PARTS DESCRIPTION PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE R 0609 VRN-VV3DB6R8J MET FILM R 6.8 OHM 5% 2W (72FF57E) S AA R 7002 VRD-RA2HD104J RES 100KOHM 5% 1/2W S AA R 7003 VRD-RA2HD104J RES 100KOHM 5% 1/2W...
  • Page 52 72FF-57E 81FF-57E PARTS DESCRIPTION PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE R 0862 VRD-RA2BE102J RES 1KOHM 5% 1/8W S AA DIODES R 0863 VRD-RA2BE222J RES 2,2KOHM 5% 1/8W S AA D 0851 RH-DX0045BMZZ DIODE 1N4148 S AA...
  • Page 53 72FF-57E 81FF-57E PARTS DESCRIPTION PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE PWB-D POWER SWITCH UNIT 81FF57E-F/I/SE COILS L 1300 VP-DF3R3K0000 PEAK COIL 3,3UH 10% S AB INTEGRATED CIRCUITS L 1301 VP-DF3R3K0000 PEAK COIL 3,3UH 10% S AB...
  • Page 54 72FF-57E 81FF-57E PARTS DESCRIPTION PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE D 2433 RH-EX0413BMZZ ZENER DIODE BZX79C8V2 S AB C 2481 VCEAEA1CW106M ELEC C 10UF 20% 16V S AA D 2434 RH-EX0413BMZZ ZENER DIODE BZX79C8V2 S AB...
  • Page 55 72FF-57E 81FF-57E PARTS DESCRIPTION PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE SC 2402 QSOCZ0109BMZZ SCART DOUBLE JR21A13 CONEC S AC R 2475 VRS-TV1JD104J 2125 100KOHM 5% 1/10W SMD S AA R 2476 VRS-TV1JD102J 2125 1KOHM 5% 1/10W SMD...
  • Page 56 72FF-57E 81FF-57E PARTS DESCRIPTION PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE C 6009 VCCCTV1HH331J CERAM C 330PF 50V 2125SMD S AA RESISTORS C 6010 VCCCTV1HH391J CERAM C 390PF 50V 2125SMD S AA R 6004 VRS-TV1JD101J 2125 100 OHM 5% 1/10W SMD...
  • Page 57 72FF-57E 81FF-57E PARTS DESCRIPTION PARTS DESCRIPTION SN CODE EX CODE SN CODE EX CODE Q 3114 VS2SC2412KQ-1 TRT 2SC2412 ROHM S AA R 6169 VRS-TV1JD391J 2125 390 OHM 5% 1/10W SMD S AA Q 3115 VS2SC2412KQ-1 TRT 2SC2412 ROHM S AA...
  • Page 58 S AA HINDP5106BMSA INDICATOR FRONTAL 81FF57E S AA R 3150 VRS-TV1JD333J 2125 33KOHM 5% 1/10W SMD S AA HBDGB3510BMSA BADGE SHARP S AC R 3152 VRS-TV1JD561J 2125 560 OHM 5% 1/10W SMD S AA HDECQ0053BMSA LED DECORATION 72FF57E S AA...
  • Page 59 72FF-57E 81FF-57E NOTES:...
  • Page 60 37GQ-20FP RECICLED PAPER PRINTED BY:...

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81ff-57e