Sharp LC-20S4US Operation Wartungshandbuch

LC-20S4U-SSERVICE MANUALIn the interests of user-safety (Required by safety regulations in some countries) the set should be restoredto its original c

LC-20S4U-S1010. Remove the 2 lock screws from the main PWB, and undo the claws a and b. Detach the main PWB by lifting thearea around the claws and pu

LC-20S4U-S11» Precautions in handling the LCD panels1. Work in a clean room (with humidities below 50%).2. Be sure to wear an anti-static armband.3. H

LC-20S4U-S12Step Part No. Description1 QCNW-A553WJZZ Extension Cable 30-pin Main (SC1202)-LCD Panel2 QCNW-A556WJZZ Extension Cable 50-pin Main (SC1201

LC-20S4U-S13ADJUSTING PROCEDURE OF EACH SECTIONThe products have been factory-adjusted to the best settings. If any of them gets out of point or readj

LC-20S4U-S145. Take the following procedure when IC2009 (EEPROM) has been initialized or IC2001 (microprocessor) replaced.5-1. Connect pins (81) and (

LC-20S4U-S156-3. White balance adjustment 1) Adjustment procedureAdjustment process menu page 3: RGB CUTOFF2, RGB-GAIN Feed the 40% white signal. Mo

LC-20S4U-S167-2. Description of Factory Settings.Setting content/range InitialValue(AV1) (AV2) (COMPONENT1)MENU PICTURE AV MODE STANDARD/DYNAMIC/DYNAM

LC-20S4U-S178. Lamp error detection8-1. Functional descriptionThis LCD colour television has a function (lamp error detection) to be turned off automa

LC-20S4U-S18Page No. ItemInitialFunctionResponse precautions on servicingValue (Do not change other items than designated.)1 MODEL A627BMODEL NUMBER S

LC-20S4U-S19Page No. ItemInitialFunctionResponse precautions on servicingValue (Do not change other items than designated.)AUDIO ADJUSTMENTSOUND3 BAND

LC-20S4U-S2CAUTION: FOR CONTINUEDPROTECTION AGAINST A RISK OFFIRE REPLACE ONLY WITH SAMETYPE F3701 (2.5A, 250V) ANDF3702 (2.0A, 250V) FUSE.SAFETY NOT

LC-20S4U-S20Page No. ItemInitialFunctionResponse precautions on servicingValue (Do not change other items than designated.)VIDEO ADJUSTMENTDVP4 N443 A

LC-20S4U-S21Page No. ItemInitialFunctionResponse precautions on servicingValue (Do not change other items than designated.)VIDEO ADJUSTMENTDVP9 PAL-N

LC-20S4U-S22Page No. ItemInitialFunctionResponse precautions on servicingValue (Do not change other items than designated.)ADJUSTMENT PROCESS TUNER IT

LC-20S4U-S23PUBLIC MODE SETTING PROCEDURE1. How to start Public Mode» There are the following two ways to get the public mode setup screen displayed.1

LC-20S4U-S242. How to exit Public ModeThere are the following ways to quit the public mode setup screen.» Turn off "PUBLIC MODE" in the adju

LC-20S4U-S255. On Setting Items* "EZ-SETUP" discussed below indicates "EZ-SETUP after the first power-on". (1) POWER ON FIXED (2)

LC-20S4U-S26(4) VOLUME FIXED LEVEL(5) R/C BUTTON(6) PANEL BUTTON(7) MENU BUTTONSelectionDefaultExplanationLimit in SettingExceptionRemarksAdjustment f

LC-20S4U-S27(8) ON SCREEN DISPLAY(9) INPUT MODE STARTSelectionDefaultExplanationLimit in SettingOthersExceptionRemarksSelection between "Yes"

LC-20S4U-S28TROUBLE SHOOTING TABLENoYesYesYesNoYesNoNoYesYesNoYesNoNoYesYesYesYesNoYesCheck the load of IC701 thru IC703 and their peripheral circuits

LC-20S4U-S29TROUBLE SHOOTING TABLE (Continued)No TV outputNo TV, video 1 and 2 outputNo video output at allNo component outputNo S video outputNo vide

LC-20S4U-S3PRECAUTION: POUR LAPROTECTION CONTINUECONTRE LES RISQUESD'INCENDIE, REMPLACER LEFUSIBLE PAR UN FUSIBLE DEMEME TYPE F3701 (2.5A, 250V)E

LC-20S4U-S30TROUBLE SHOOTING TABLE (Continued)YesYesYesYesYesYesYesYesNoNoNoNoNoNoNoNoNoNoNoYesYesYesIs there the lack of sound in any input mode (TV,

LC-20S4U-S31TROUBLE SHOOTING TABLE (Continued)YesYesNoNoNo NoYesNo TV ColorIs the input at pin (31) of IC801 as specified?Check the output of IC801 an

LC-20S4U-S32Pin No. Pin Name I/O Pin Name Function1 P96 O N.C2 P95 O N.C3 P94 O N.C4 P93 O N.C5 P92 O N.C6 TB1in I CSYNC Composite sync signal7 TB0in

LC-20S4U-S33Pin No. Pin Name I/O Pin Name Function51 P43 O N.C52 P42 O HPMUTE Headphones mute53 P41 O SP MUTE1 Main speaker mute54 P40 O N.C55 P37 I H

LC-20S4U-S87109654321AB CDEFGH34BLOCK DIAGRAMSP 2SLEEP(S_STBY)SPVIDEOS-IFIN/OUTINPUT 1COMPONENTY-INVIDEO IN/OUT SWICHQ3410ININ/OUTAUDIO IN/OUT SWITC

LC-20S4U-S351716 1918151413121110IC2001OFL1RCRECEIVERCVBS1-in 40Y-in 42Pb-in 33RED,GREEN,BLUEQSMAIN_PWBINV_UNITMPWEH, MPWEL, MPOE, MPCE, TSTCLKCSYNCVS

LC-20S4U-S87109654321AB CDEFGH36OVERALL WIRING DIAGRAMSC1201N0687FJ1GND2R73R64R55R46GND7R38R29R110R011GND12G713G614G515G416GND17G318G219G120G021GND22B

LC-20S4U-S371716 1918151413121110SC1203 NA002WJ1CSCOM2CSCOM3VCOM4VCOM5GNDSC701 WA010WJ4B5VA5B3.3V1.2A6B5V250MA7B5V700MA8B9V500MA9B17V500MA10B35V11GND1

38LC-20S4U-SVOLTAGE MEASUREMENT CONDITION:1. The voltages at test points are measured onexclusive AC adaptor and the stable supply voltageof AC 110-24

39654321ABCDEFGHLC-20S4U-SSCHEMATIC DIAGRAMËOPERATION Unit

LC-20S4U-S4Precautions for using lead-free solder1 Employing lead-free solder"All PWBs" of this model employs lead-free solder. The LF symbo

LC-20S4U-S87109654321AB CDEFGH40ËMAIN Unit-1/5

LC-20S4U-S411716 1918151413121110

LC-20S4U-S87109654321AB CDEFGH42ËMAIN Unit-2/5

LC-20S4U-S431716 1918151413121110

LC-20S4U-S87109654321AB CDEFGH44ËMAIN Unit-3/5

LC-20S4U-S451716 1918151413121110

LC-20S4U-S87109654321AB CDEFGH46ËMAIN Unit-4/5

LC-20S4U-S471716 1918151413121110

LC-20S4U-S87109654321AB CDEFGH48ËMAIN Unit-5/5

LC-20S4U-S491716 1918151413121110

LC-20S4U-S5SPECIFICATIONSItemsLCD panel 20" Advanced Super View & BLACK TFT LCDNumber of dots 921,600 dots VGAVideo color systems N358, N443,

LC-20S4U-S87109654321AB CDEFGH50ËANALOG Unit-1/4

LC-20S4U-S511716 1918151413121110

LC-20S4U-S87109654321AB CDEFGH52ËANALOG Unit-2/4

LC-20S4U-S531716 1918151413121110

LC-20S4U-S87109654321AB CDEFGH54ËANALOG Unit-3/4

LC-20S4U-S551716 1918151413121110

LC-20S4U-S87109654321AB CDEFGH56ËANALOG Unit-4/4

LC-20S4U-S571716 1918151413121110

58654321ABCDEFGHLC-20S4U-SËR/C, LED Unit

59654321ABCDEFGHLC-20S4U-SPRINTED WIRING BOARD ASSEMBLIES1J4000R4008R4007D4001R4004R4005R4003R4002Q4002Q4000Q4001D4000D4002D4004R4001R4000R4006RMC4000

LC-20S4U-S6OPERATION MANUALPart Names of Main UnitControls• INPUT, CH ()/(), VOL (–)/(+) and MENU on the main unit have the same functions as the same

LC-20S4U-S87109654321AB CDEFGH60MAIN Unit (Side-A)

LC-20S4U-S611716 1918151413121110

LC-20S4U-S87109654321AB CDEFGH62MAIN Unit (Chip Parts Side-A)C877SC1202LUG2002R899 R869C856R812C854C853C852C859C858C857C855K001C850C851R829C801MASK001

LC-20S4U-S631716 1918151413121110R2061R2063R2077R2065R2066R2060R2062R2015R2064R2059R2072 R2073R2057R2056R2058R2082R2083R2054C2008C2018R2053 R2050R2049

LC-20S4U-S87109654321AB CDEFGH64MAIN Unit (Side-B)

LC-20S4U-S651716 1918151413121110

LC-20S4U-S87109654321AB CDEFGH66MAIN Unit (Chip Parts Side-B)R723R730R739R707C719C724TL711TL708C715R719R706C703IC701TL710TL712TL709C710R754TL715R718C7

LC-20S4U-S671716 1918151413121110762352002R2069R2068R2067R2043R2039Q2019Q2020R2080R2079TL801R893R894Q802Q803R897TL2028FB803FB806FB805TL2030R896R895C86

LC-20S4U-S87109654321AB CDEFGH68ANALOG Unit (Side-A)

LC-20S4U-S691716 1918151413121110

LC-20S4U-S7Part Names of Remote ControlDISPLAYDisplays the receiving channel andthe current time for 10 seconds.AV MODE Selects preferred AV MODE.BACK

LC-20S4U-S87109654321AB CDEFGH70ANALOG Unit (Chip Parts Side-A)D3701D3702Q3701FB3701R3703P3702C3426R3436C3431R3433R34371IC3403R3430C3417C3418C3415C341

LC-20S4U-S711716 1918151413121110C3709D3704LUG3401R3718R3714R3708D3705R3717C3707C3708R3715R3716D3710C3706C3703IC3701D3711R3713R3712R3711Q3706R3730R371

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code72LC-20S4U-S★ MARK: SPARE PARTS-DELIVERY SECTION★ MARQUE: SECTION LIVRAIS

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code73LC-20S4U-SDUNTKC847FE09MAIN Unit (Continued)D702 VHDRB051L40-1Y J Diode ADD

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code74LC-20S4U-SDUNTKC847FE09MAIN Unit (Continued)C1108 RC-KZA108WJZZY J 10 10V C

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code75LC-20S4U-SDUNTKC847FE09MAIN Unit (Continued)R1212 VRS-CY1JF220JY J 22 1/16W

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code76LC-20S4U-SDUNTKD084WE03ANALOG UnitTUNERNOTE: THE PARTS HERES SHOWN ARE SUPP

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code77LC-20S4U-SC3451 VCAAPC0JJ226MY J 22 6.3V Electrolytic AEC3455 VCKYCY1HF103Z

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code78LC-20S4U-SR3706 VRS-CY1JF184JY J 180k 1/16W Metal Oxide AAR3707 VRS-CY1JF10

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code79LC-20S4U-SDUNTKD086FM03OPERATION UnitDIODESD4050 RH-EX0640GEZZY J Zener Dio

LC-20S4U-S8DIMENSIONSUnit: inch (mm)315/16(100)439/64(117) 12 7/32(310)191/32(483)1557/64(403.3)1127/32(300.8)1119/32(294.4)521/64(135)553/64(148)1949

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code80LC-20S4U-SCABINET AND MECHANICAL PARTS1 CCABAA847WJ01 X Cabinet A Ass’y BH1

81654321ABCDEFGHLC-20S4U-SCABINET AND MECHANICAL PARTSAACCCCOBBLBBHIAAMDIFGHFELNGMEJKONDKJ4267826142617182928122128232311242510563272213216194-24-34-5

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code82LC-20S4U-SSUPPLIED ACCESORIESPACKING PARTS(NOT REPLACEMENT ITEM)X1 LHLDWA00

83LC-20S4U-SPACKING OF THE SETS1S7S5S5S5S4S5S2/S3X1X2X3X4X5X6X7S6

LC-20S4U-SCOPYRIGHT © 2005 BY SHARP CORPORATIONALL RIGHTS RESERVED.No part of this publication may be reproduced,stored in a retrieval system, or tran

LC-20S4U-S9REMOVING OF MAJOR PARTS1. Remove the stand cover fixing screws (1 pc.)2. Remove the stand fixing screws (4 pcs.).3. Remove the carrying han