Sharp 25C340 Manual de Serviço

125C340In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to itsoriginal condition and only

1025C340Ë MTS ADJUSTMENTMTS Level Adjustment1. Feed the following monaural signal to pin (14) ofIC3001.Monaural signal: 300Hz, 245mVrms2. Connect the

11654321AB CDEFGH25C340CHASSIS LAYOUTPWB-APWB-B

12654321AB CDEFGH25C340BLOCK DIAGRAM

1325C340DESCRIPTION OF SCHEMATIC DIAGRAMNOTES:1. The unit of resistance "ohm" is omitted.(K=kΩ=1000Ω, M=MΩ)2. All resistors are 1/16 watt

87 109654321ABCDEFGHSCHEMATIC DIAGRAM: MAIN-1 Unit25C34014

171615141312111018 1925C34015

87 109654321ABCDEFGHSCHEMATIC DIAGRAM: MAIN-1 Unit25C34016

1716 191815141312111025C34017

654321ABCDEFGHSCHEMATIC DIAGRAM: CRT Unit25C34018

19654321AB CDEFGH25C340PRINTED WIRING BOARD ASSEMBLIESPWB-B: CRT Unit (Wiring Side)

225C340IMPORTANT SERVICE SAFETY PRECAUTIONService work should be performed only by qualified service technicians who arethoroughly familiar with all s

20654321AB CDEFGH25C340PWB-A: MAIN Unit (Wiring Side)

654321AB CDEFGH25C340PWB-A: MAIN Unit (Chip Parts Side)21

PRINTED WIRING BOARD ASSEMBLIESPARTS LISTPARTS REPLACEMENTReplacement parts which have these special safety characteristicsidentified in this manual;

Ref. No. Part No. « Description CodeD708 VHD1SS119//-1Y X Diode AAU D709 RH-DXA006WJZZ X Diode ABU D712 RH-DX0532CEZZY X Diode ABD725 RH-DX0131CEZZY

Ref. No. Part No. « Description CodeC801 VCCCCY1HH180JY X 18p 50V Ceramic AAC807 VCKYCY1EF104ZY X 0.1 25V Ceramic AAC808 VCEA0A1HW106M+ X 10 50V EL. A

Ref. No. Part No. « Description CodeR495 VRS-RG3DB820J+ X 180k 1/16W M-Ox. ABR496 VRS-CY1JF472JY X 4.7k 1/16W M-Ox. AAR497 VRS-CY1JF102JY X 1k 1/16W M

Ref. No. Part No. « Description CodeR2064 VRD-RA2BE391JY X 390 1/8W Carbon AAR2065 VRS-CY1JF000JY X 00 1/16W M-Ox. AAR2067 VRS-CY1JF103JY X 10k 1/16W

Ref. No. Part No. « Description CodeR869 VRD-RA2BE121JY X 120 1/8W Carbon AAR871 VRD-RA2BE471JY X 470 1/8W Carbon AAR872 VRD-RA2BE221JY X 220 1/8W Car

PACKING OF THE SET★ Packing CaseMARK ★ : Not replacement items.FRONT★ Buffer Material★ Polyethylene Sheet★ Polyethylene BagOperation ManualInfrared R/

COPYRIGHT © 2004 BY SHARP CORPORATIONALL RIGHTS RESERVED.No part of this publication may be reproduced,stored in a retrieval system, or transmitted in

325C340SAFETY NOTICEMany electrical and mechanical parts in televisionreceivers have special safety-related characteristics.These characteristics are

425C340LOCATION OF USER'S CONTROL1 2 34 5 67 8 90100POWERTVDVDVCRMENU MUTEPAUSEFLASHBACKDISPLAYINPUTTV • CATV • VCR • DVDSTOP RECREW PLAY FFCH/SK

525C340CIRCUIT PROTECTIONThe receiver is protected by a 4.0A fuse (F701),mounted on PWB-A, wired into one side of the ACline input.X-RADIATION PROTECT

625C340For adjustments of this model, the bus data is converted to various analog signals by the D/A converter circuit.Note: There are still a few ana

725C340Below are the adjustments ranges and initial values for FIX VALUE category.FIX VALUEF01 OPTION 1 00-FF B3 B3F02 OPTION 2 00-FF 07 07F03 E-SAVE

825C340IC2001IC2102XIC3001 XIC201Data is stored in IC2102.Adjust items related MTS only.Holding down both the Vol-up/Ch-down buttons on the TV set at

925C340Figure B: WAVEFORM FOR SCREEN ADJUSTMENTË SERVICE ADJUSTMENTNote: Before making the service adjustment, make thebus data settings.+B Adjustment