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PAL
/ SECAM
B/G
ELECTRICAL SPECIFICATIONS ........................................................................................ 3
IMPORTANT SERVICING NOTES ...................................................................................... 4
CONTROLS & TERMINALS ................................................................................................ 5
PRINTED WIRING BOARD LAYOUT ................................................................................. 6
PARTS LISTING ................................................................................................................... 7
HOW TO UPDATE THE TECHNICAL INFORMATION ...................................................... 11
SHARP CORPORATION
SERVICE MANUAL
SYSTEM COLOUR TELEVISION
L/L', B/G, D/K
MODEL
In the interests of user safety (required by safety
regulations in some countries) the set should be re-
stored to its original condition and only parts identi-
cal to those specified should be used.
In order to service the model 21LF-90S, refer to
the
AK-44
(SE00AK44CHA00).
CONTENTS
1
Issued: 16
AK- 44
CHASSIS
21LF-90S
Chassis
Service
This document has been published to
be used for after sales service only.
21LF-90S
SE0021LF90S00
Feb. 2004
th
Manual
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Summary of Contents for Sharp 21LF-90S
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Page 1: Table Of Contents
In the interests of user safety (required by safety regulations in some countries) the set should be re- stored to its original condition and only parts identi- cal to those specified should be used. In order to service the model 21LF-90S, refer to AK-44 Chassis Service Manual (SE00AK44CHA00). - Page 2 21LF-90S SERVICE MANUAL UPDATE LOG SHEET Technical Report No. Application Cause / Solution Part No. Page No. Data /Serial No. 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.
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Page 3: Electrical Specifications
Y=0.300 ± 0.015 Specifications are subject to change without prior notice. MODEL DESTINATION (Operation Manual Languages) 21LF-90S: Deutsch, Français, Nederlands. WARNING The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power receptacle, when servicing this chassis. -
Page 4: Important Servicing Notes
21LF-90S 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: Controls & Terminals
21LF-90S CONTROLS & TERMINALS Speakers (left + right) = Power On / Off = Volume -/+ = Program -/+ MENU = Menu VIDEO = VCR AUDIO L = Audio left AUDIO R = Audio right MENU = Headphone 3,6 mm Ø... -
Page 6: Printed Wiring Board Layout
21LF-90S CHASSIS LAYOUT Mother Unit Headphone Unit CRT Unit... -
Page 7: Parts Listing
X100 30002852 XTAL REZ 455KHZ 30017634 21" CPT TUBE SAFE EW FREE REALFLAT X401 30001749 XTAL 4.433619 MHZ (AK15) 30028644 21 DEG COIL&EARTH CB. WO/UL FLAT SHARP X402 30015592 XTAL 3.579545 (WO/LOAD CAP) X403 30000074 CAP MKT 100NF 63V J... - Page 8 21LF-90S REF No. PARTS DESCRIPTION SN CODE EX CODE REF No. PARTS DESCRIPTION SN CODE EX CODE C100 30000352 CAP EL 100UF 16V M C738 30000371 CAP EL 22UF 50V M C201 30000400 CAP EL 47UF 50V M C801 30000094 CAP MKT SAFE 220NF 275V M AC...
- Page 9 JK100 30001900 JACK HEADPHONE HP01/2/3/4/5/6 30018427 CNAS 2P/500 SPK SIS W/C+FER UL1007AWG24 30025172 IC TDA6107JF/N3 JK100 30027656 JACK RCA 1P RED SHARP (AK44) 30027134 SPEAKER 16R 4W F/R 50x120MM-21" SHARP 30027654 JACK RCA 1P YELLOW SHARP (AK44) 30028208 POWER CORD SAFE EURO 2.2M SHARP W/FILTER...
- Page 10 21LF-90S REF No. PARTS DESCRIPTION SN CODE EX CODE 20143026 R/C 1548 SHARP (EKO2GRAY/I) (GRAY/S) 35000136 FUSE HOLDER TK79-A (GRAY) 35000158 NUT C ZN BOTTOM M3 35000165 KNURL WASHER C ZNSY 3*6*04 (M3) 35000180 SCREW C ZN YSMB M3*6 35000181 SCREW C ZN YSMB M3*8 35000182 SCREW C ZN YSMB M3*10 35000224 SCREW C SK ZN YFMB 2.9*9.5...
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Page 11: How To Update The Technical Information
21LF-90S How to update the Technical Information appeared on this Service Manual 1. Web site: https://www.vestelservice.com 2. Select: Technical Support 3. Login: 101278 4. Password: SHPII278 By this access you can consult the latest schematic diagram or request the Parts Listing of a concrete Production Date / Serial Number. - Page 12 Technical information and Production: Vestel Electronik AS PRINTED BY: Think Ecology, please use Technical information re-issued: SHARP ELECTRONICA ESPAÑA S.A. Service Manual Group Engineering Dept. Polígono Industrial Can Sant Joan 08190 Sant Cugat del Vallès Barcelona...