Sharp LC-20E1UB Service Manual

LC-20E1ULC-20E1UB/UWSERVICE MANUALIn the interests of user-safety (Required by safety regulations in some countries) the set should be restoredto its

10LC-20E1ULC-20E1UB/UWREMOVING OF MAJOR PARTS1. Remove the table stand fixing screws (4 pcs.).2. Remove the two terminal covers.3. Remove the terminal

11LC-20E1ULC-20E1UB/UW10. Remove the inverter-A PWB fixing screws (2 pcs.).11. Remove the inverter-B PWB fixing screws (1 pc.).12. Remove the digital

12LC-20E1ULC-20E1UB/UW» Precautions in handling the LCD panels1. Work in a clean room (with humidities below 50%).2. Be sure to wear an anti-static ar

13LC-20E1ULC-20E1UB/UWPrecautions at the time of the side B(back) service of digital unit.1. Remove only SC2001 of the FFC for connection between Digi

14LC-20E1ULC-20E1UB/UWADJUSTING PROCEDURE OF EACH SECTIONThe best adjustment is made before shipping. If any position deviation is found or after part

15LC-20E1ULC-20E1UB/UW4. Adjustments1 B+ Adjustment(R3760)2 Inch Size setup(If E2PROM is replaced)(IC2004)3 Common-bias adjustment4 TAMP adjustment5 W

16LC-20E1ULC-20E1UB/UW5. Shipping setting listChannel...

17LC-20E1ULC-20E1UB/UWTest patterns in adjustment process mode[1] IC801 (Video decoder) test patterns1-1. Getting the test patterns displayedPut the s

18LC-20E1ULC-20E1UB/UWNo. Pin name Function1 V HOLD2 HLF3 MAIN SW4 TIMELED5 M/S OUT6 CSYNC7 IREMI8 GND9 GND10 XCIN11 XOUT12 RESET13 XOUT14 GND15 XIN16

19LC-20E1ULC-20E1UB/UWAdjustment process mode menus at a glancePage ItemInitial settingFunction Adjust/modify1 MODEL E1U Model numberINCH SIZE 20 Inch

2LC-20E1ULC-20E1UB/UWCAUTION: FOR CONTINUEDPROTECTION AGAINST A RISK OFFIRE REPLACE ONLY WITH SAMETYPE F3701 (2.0A, 125V), F3702(1.6A, 125V), F6700 (

20LC-20E1ULC-20E1UB/UWPage ItemInitial settingFunction Adjust/modify7 I2C DATA 0 I2C bus control IC data write & readI2C DATA WAIT Write & rea

21LC-20E1ULC-20E1UB/UWPage ItemInitial settingFunction Adjust/modify12 PAL AV COLOR 2500 Color density setting (composite, S video)PAL AV TINT +56 Col

22LC-20E1ULC-20E1UB/UWPage ItemInitial settingFunction Adjust/modify17 AFT UP 2.7 AFT reference voltageAFT DOWN 1.8 AFT reference voltageNTSC 01 8C In

23LC-20E1ULC-20E1UB/UWPage ItemInitial settingFunction Adjust/modify19 V255 255 Gradation power reference voltageV255 BIAS 127 Gradation power referen

24LC-20E1ULC-20E1UB/UWPUBLIC MODE1. OutlineThe Public mode is designed to limit the functions of LCD TV sets that are set up at hotels, public places

25LC-20E1ULC-20E1UB/UW5. Quitting the Public modeHold down the [TV/VIDEO] and [MENU] buttons at once, and press the MAIN POWER switch to power on the

26LC-20E1ULC-20E1UB/UWTROUBLE SHOOTING TABLENoNo Power (Power LED indicator still in red)Go to the adjustment process mode.Move the cursor to ERROR NO

27LC-20E1ULC-20E1UB/UWTROUBLE SHOOTING TABLE (Continued)Check all the settings on the microprocessor’s adjust process menu.No pictureNo picture at all

28LC-20E1ULC-20E1UB/UWNo picture and soundNo colorNo TV colorNo S-VIDEO colorYesNoDo F3701and F3702 function?Check all the settings on the microproces

29LC-20E1ULC-20E1UB/UWTROUBLE SHOOTING TABLE (Continued)No sound from speakersYesNoIs pin (53) of IC2001 at “L”?Check all the settings on the micropro

3LC-20E1ULC-20E1UB/UWPRECAUTION: POUR LAPROTECTION CONTINUE CONTRELES RISQUES D'INCENDIE,REMPLACER LE FUSIBLE PAR UNFUSIBLE DE MEME TYPE F3701(2.

3130LC-20E1ULC-20E1UB/UW121110987654321ABCDEFGHCHASSIS LAYOUTANALOG UnitCONTROL UnitDIGITAL UnitR/C, LED UnitINVBERTER-A UnitINVBERTER-B Unit

3332LC-20E1ULC-20E1UB/UW121110987654321ABCDEFGHBLOCK DIAGRAMINVERTERQ6700, Q6701T6700, T6701Q6703, Q6704T6702, T6703Q6706, Q6707T6704, T6705AV1S-VIDEO

3534LC-20E1ULC-20E1UB/UW121110987654321ABCDEFGHOVERALL WIRING DIAGRAM

36LC-20E1ULC-20E1UB/UWVOLTAGE MEASUREMENT CONDITION:1. The voltages at test points are measured onexclusive AC adaptor and the stble supply voltageof

37654321ABCDEFGHLC-20E1ULC-20E1UB/UWSCHEMATIC DIAGRAMËR/C, LED and CONTROL UnitR/C, LED

3938LC-20E1ULC-20E1UB/UW121110987654321ABCDEFGHËDIGITAL Unit-1/5

4140LC-20E1ULC-20E1UB/UW121110987654321ABCDEFGHËDIGITAL Unit-2/5

4342LC-20E1ULC-20E1UB/UW121110987654321ABCDEFGHËDIGITAL Unit-3/5

4544LC-20E1ULC-20E1UB/UW121110987654321ABCDEFGHËDIGITAL Unit-4/5

4746LC-20E1ULC-20E1UB/UW121110987654321ABCDEFGHËDIGITAL Unit-5/5

4LC-20E1ULC-20E1UB/UWPrecautions for using lead-free solder1 Employing lead-free solder"All PWBs" of this model employs lead-free solder. Th

4948LC-20E1ULC-20E1UB/UW121110987654321ABCDEFGHËANALOG Unit-1/2

5150LC-20E1ULC-20E1UB/UW121110987654321ABCDEFGHËANALOG Unit-2/2

52654321ABCDEFGHLC-20E1ULC-20E1UB/UWËINVERTER-A Unit

53654321ABCDEFGHLC-20E1ULC-20E1UB/UWËINVERTER-B Unit

54654321ABCDEFGHLC-20E1ULC-20E1UB/UWPRINTED WIRING BOARD ASSEMBLIESDIGITAL Unit (Side-A)

55654321ABCDEFGHLC-20E1ULC-20E1UB/UWDIGITAL Unit (Chip Parts Side-A)C7024C7025R7023 R7024IC7001C7005R7003Q7001R7048C7055R7042R7043C7059FL7102FL7101C70

56654321ABCDEFGHLC-20E1ULC-20E1UB/UWDIGITAL Unit (Side-B)

57654321ABCDEFGHLC-20E1ULC-20E1UB/UWDIGITAL Unit (Chip Parts Side-B)R1236R1235IC1202C1202C839R816C818C813FB801L1203C1215L1205R1148R1147C1155C1207R1123

58654321ABCDEFGHLC-20E1ULC-20E1UB/UWR/C, LED Unit (Side-A)R/C, LED Unit (Chip Parts Side-A)P4005D4013D4012D4022R4021C4018R4029R4024D4014Q4003Q4007R402

59654321ABCDEFGHLC-20E1ULC-20E1UB/UWANALOG Unit (Side-A)

5LC-20E1ULC-20E1UB/UWSPECIFICATIONSItemsLC-20E1UModelLCD panel 19.7” ASV & BLACK-TFT LCDNumber of dots 921,600 dots VGAVideo color systems N358, N

6160LC-20E1ULC-20E1UB/UW121110987654321ABCDEFGHANALOG Unit (Chip Parts Side-A)P3704R3755R3753R3758R3208C3205C3210R3207J3500R3550P3504R3530C3511R3551R3

62654321ABCDEFGHLC-20E1ULC-20E1UB/UWINVERTER-A Unit (Side-A)

63654321ABCDEFGHLC-20E1ULC-20E1UB/UWINVERTER-A Unit (Chip Parts Side-A)C6712R6708Q6706R6710C6713Q6708R6709Q6707R6711R6722D6700P6705Q6704R6721R6720R670

64654321ABCDEFGHLC-20E1ULC-20E1UB/UWINVERTER-B Unit (Side-A)

65654321ABCDEFGHLC-20E1ULC-20E1UB/UWINVERTER-B Unit (Chip Parts Side-A)Q6712Q6713R6716R6717C6722R6719R6718C6723Q6714Q6709Q6710R6712R6713C6717R6724R672

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code66LC-20E1ULC-20E1UB/UWRef. No. Part No. ★ Description CodeRef. No. Part No. ★

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code67LC-20E1ULC-20E1UB/UWDUNTKA670FE29DIGITAL UNIT (Continued)IC7201 VHiMM1031XM

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code68LC-20E1ULC-20E1UB/UWDUNTKA670FE29DIGITAL UNIT (Continued)C1109 VCKYCY1EF104

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code69LC-20E1ULC-20E1UB/UWDUNTKA670FE29DIGITAL UNIT (Continued)C7201 VCKYTV1AB105

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code70LC-20E1ULC-20E1UB/UWDUNTKA670FE29DIGITAL UNIT (Continued)R1179 VRS-CY1JF103

6LC-20E1ULC-20E1UB/UWOPERATION MANUAL• TV/VIDEO, CH ()/(), VOL (–)/(+), and MENU on the main unit have the same functions as the same buttonson the re

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code71LC-20E1ULC-20E1UB/UWDUNTKA670FE29DIGITAL UNIT (Continued)R7701 VRS-CY1JF103

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code72LC-20E1ULC-20E1UB/UWDUNTKB412DE03ANALOG UNIT (Continued)COILSL3201 VP-1M220

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code73LC-20E1ULC-20E1UB/UWDUNTKB412DE03ANALOG UNIT (Continued)R3204 VRS-CY1JF152J

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code74LC-20E1ULC-20E1UB/UWR3752 VRS-CY1JF102JY J 1k 1/16W Metal Oxide AAR3753 VRS

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code75LC-20E1ULC-20E1UB/UWDUNTKB416DE01INVERTER-A UNITDUNTKB414DE03R/C, LED UNITT

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code76LC-20E1ULC-20E1UB/UWDUNTKB417DE01INVERTER-B UNITTRANSISTORSQ6709 VSFZT1053A

77LC-20E1ULC-20E1UB/UW654321ABCDEFGHCABINET AND MECHANICAL PARTS2-22-22A2423241592-38192-42-1162-4G2017I JABAJIBDHBC5B5-31410182020122021675-25-205-20

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code78LC-20E1ULC-20E1UB/UW5-11 PMLT-0377CEZZ J Spacer AD5-12 PSHEP0286CEZZ J Refl

79LC-20E1ULC-20E1UB/UWPACKING OF THE SET★ Polyethylene Bag(SSAKA0160CEZZ)Operation Manual(TiNS-A158WJZZ)Cable Clamp(LHLDW0109CESA : LC-20E1U/UW)(LHLDW

LC-20E1ULC-20E1UB/UWCOPYRIGHT © 2002 BY SHARP CORPORATIONALL RIGHTS RESERVED.No part of this publication may be reproduced,stored in a retrieval syste

7LC-20E1ULC-20E1UB/UWListening with HeadphonesFRONT AND REAR CONTROL OPTIONS (Continued)ËBefore connecting a connection cord into the rear terminal, r

8LC-20E1ULC-20E1UB/UWCONNECTING WITH EXTERNAL DEVICESYou can enjoy picture and sound by connecting a VCR or a home video game system to the terminalsl

9LC-20E1ULC-20E1UB/UWDIMENSIONSUnit: inch/(mm)VIDEOLAUDIORYPBPRAV-IN 2/OUTCOMPONENTLAUDIORVIDEOS-VIDEOLAUDIORHEADPHONEANT.POWERINPUTDC13VAV-IN 1POWER