Sharp LC-22AD1E Service Manual

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Operation manual (67 pages)

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Page 1: Table Of Contents
LC-22AD1E SERVICE MANUAL S14N8LC22AD1E2E LCD COLOUR TELEVISION LC-22AD1E MODEL In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.
Page 2: Important Service Safety Precaution
LC-22AD1E IMPORTANT SERVICE SAFETY PRECAUTION Ë Service work should be perfomed only by qualified service technicians who are thor- oughly familiar with all safety checks and the servicing guidelines which follow: WARNING ground, such as electrical conduit or electrical ground connected to an earth ground.
Page 3 LC-22AD1E Precautions for using lead-free solder 1 Employing lead-free solder "Inverter PWB","AV PWB","R/C,LED PWB","EXT-SP TERMINAL PWB","OPEARATION PWB","SP-JACK PWB","MAIN PWB"of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead- free solder.
Page 4: Specifications
LC-22AD1E SPECIFICATIONS Specifications are subject to change without prior notice.
Page 5: Operation Manual
LC-22AD1E OPERATION MANUAL...
Page 6 LC-22AD1E...
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Page 9: Dimensions
LC-22AD1E DIMENSIONS Unit: mm 492.6 91.5...
Page 10: Removing Of Major Parts
LC-22AD1E REMOVING OF MAJOR PARTS 1. Remove the 4 stand fixing screws to detach the stand. Cabnet B 2. Remove the terminal covers (R), (L) and (C). Terminal Cover (R) Control Panel (Top Cover) 3. Remove the 2 terminal fixing screws.
Page 11 LC-22AD1E 8. Remove the tape for fixing the wire. 9. Remove the individual connectors from the AV PWB and EU-DIGITAL PWB. 10. Remove the 4 AV PWB terminal fixing screws. 11. Remove the 2 EU-DIGITAL PWB terminal fixing screws and the PC card cover.
Page 12 LC-22AD1E 16. Open the wire holder and disconnect the connection cord. INVERTER UNIT 17. Disconnect each connector from each PWB. MAIN PWB 1BIT-AMP UNIT OPERATION PWB 18. Remove the 2 top cover ass’y fixing screws to take out the top cover ass’y (OPERATION PWB).
Page 13 LC-22AD1E 25. Remove the 4 MAIN PWB fixing screws to detach the MAIN PWB. 26. Remove the 4 INVERTER PWB fixing screws to detach the INVERTER PWB. 27. Remove the 2 LCD panel fixing screws to detach the LCD panel unit.
Page 14 LC-22AD1E Æ Cautions when handling the LCD panel 1. Work in a clean room (relative humidity: 50% or more). 2. The workers must wear an earth band. 3. Do not expose it to shocks such as drop or vibration. 4. Use an ionizer (within 30 cm).
Page 15: Trouble Shooting Table
LC-22AD1E TROUBLE SHOOTING TABLE...
Page 16 LC-22AD1E TROUBLE SHOOTING TABLE (Continued)
Page 17 LC-22AD1E TROUBLE SHOOTING TABLE (Continued)
Page 18 LC-22AD1E TROUBLE SHOOTING TABLE (Continued)
Page 19 LC-22AD1E TROUBLE SHOOTING TABLE (Continued)
Page 20 LC-22AD1E TROUBLE SHOOTING TABLE (Continued)
Page 21 LC-22AD1E TROUBLE SHOOTING TABLE (Continued)
Page 22: Adjusting Procedures
LC-22AD1E ADJUSTING PROCEDURES The best adjustment is made before shipping. If any position deviation is found or after part replacement is performed, adjust as follows. Preparation for adjustments Use the dedicated AC adaptor or stable DC power supply. AC adaptor: UADP-A056WJPZ DC Power supply: 13V 7.0A...
Page 23 LC-22AD1E 4. Adjustment (1) +B adjustment (R3717) a) Receive the standard colour bar signal. b) Connect a digital voltage meter to TP3722. Adjust the voltage to 5.00V±0.02V using R3717 (trimming VR). Specified value: 5.00V±0.02V Note: Since the reference voltage for all of the supply voltages is 5V, make sure you set the 5.00V adjustment accurately.
Page 24 LC-22AD1E f) Press the cursor “(")” key and the “OK” key again, and select [G/A] : 3 [G/A TEST PATTERN 1], on the third page of the [G/A] second layer on the second page. Then, use the cursor “(Û)/(û)” keys...
Page 25 LC-22AD1E (5) White balance adjustment This TV input white balance adjusted. This adjustment is performed when the LCD is replaced and the white balance must be set. a) Bring up the pattern shown in Fig. 5-1 on AV1, AV2 or AV3 using a signal generator .
Page 26 LC-22AD1E 5. Lamp error detection 1) Function description This LCD colour television has a function (lamp error detection) that turns off the power automatically, for safety, if a problem occurs with a lamp or a lamp circuit. If there is a problem with a lamp or a lamp circuit or if a lamp error is detected for some other cause, the following will occur.
Page 27 LC-22AD1E 6. Values set at factory shipment Colour system(AV1) Auto ITEM INITIAL VALUE Colour system(AV2(Y/C)) Auto LAST CH Colour system(AV2(CVBS)) Auto LAST POWER AV control voltage FLASH BACK RGB on-screen display Volume For decoder connected to AV1 All CH Cancel...
Page 28 LC-22AD1E 7. ADJUSTMENT PROCESS MODE MENU LIST...
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Page 36: Software Upgrade Procedure Digital Broadcasting Receiver Unit
LC-22AD1E Software Upgrade Procedure for Digital Broadcasting Receiver Unit 1. Applicable Models • LC22AD1E/K 2. Equipment Required • PC card-sized flash memory card: 1 The following Compact Flash cards and PCMCIA Compact Flash card adapters are available. Support the following Compact Flash card PCMCIA Compact Flash card adapters.
Page 37 LC-22AD1E Case B: When the versions are the same between the installed software and software to download 1. Disconnect the antenna cable from the unit. 2. Make sure that the power of the unit is turned off, and insert the flash memory card into the CI slot.
Page 38: Troubleshooting
LC-22AD1E 5. Troubleshooting Error message may appear when the download is not completed properly. Case A: Card identification failed The unit failed to detect the card. Loose insertion or poor contact may be the cause. Follow the procedure below. 1. Turn off the power of the unit.
Page 39: Major Ic Informations
LC-22AD1E Major IC Informations 1. IC2510 (A385WJ) S/PDIF This is an audio signal encoder IC that converts signals to the S/PDIF format. The output signal of this IC is optically connected to an external digital adio device,allowing you to enjoy digital sound on an LCD TV.
Page 40 LC-22AD1E 11. IC4512 (IXA595) QS-LCD-CONTROL This is an LCD control IC for OS driving control that handles three-wire serial communication with the MICON (IC3501). It outputs a control signal for driving the liquid crystal panel. Additionally, it has a Quick shoot image quality correction function (including control of the temperature) and an OSD MIX function.
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Page 56: Chassis Layout
LC-22AD1E LC-22AD1E CHASSIS LAYOUT OPERATION Unit INVERTER Unit MAIN Unit EXT-SP TERMINAL Unit SP-JACK Unit R/C, LED Unit 56-57...
Page 57 LC-22AD1E AV Unit...
Page 58: Block Diagram 1/2
LC-22AD1E BLOCK DIAGRAM 1/2 POWER-SOURCE BLOCK DIAGRAM...
Page 59 LC-22AD1E LC-22AD1E BLOCK DIAGRAM 2/2 SYSYTEM BLOCK DIAGRAM 60-61...
Page 60: Overall Wiring Diagram
LC-22AD1E LC-22AD1E OVERALL WIRING DIAGRAM 62-63...
Page 61: Description Of Schematic Diagram
LC-22AD1E DESCRIPTION OF SCHEMATIC DIAGRAM VOLTAGE MEASUREMENT CONDITION: 1. The voltages at test points are measured on exclusive AC adaptor and the stable supply voltage of AC 120V. Signals are fed by a color bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.
Page 62: Schematic Diagram
LC-22AD1E SCHEMATIC DIAGRAM Ë INVERTER Unit...
Page 63 LC-22AD1E LC-22AD1E Ë AV Unit 66-67...
Page 64 LC-22AD1E Ë R/C,LED Unit...
Page 65: Operation Unit
LC-22AD1E Ë OPERATION Unit...
Page 66 LC-22AD1E Ë EXT-SP TERMINAL Unit...
Page 67 LC-22AD1E Ë SP-JACK Unit...
Page 68 LC-22AD1E LC-22AD1E Ë MAIN Unit - AUDIO 1/11 72-73...
Page 69 LC-22AD1E LC-22AD1E Ë MAIN Unit - POWER 2/11 74-75...
Page 70 LC-22AD1E LC-22AD1E Ë MAIN Unit - TELETEXT 3/11 76-77...
Page 71 LC-22AD1E LC-22AD1E Ë MAIN Unit - MICON 4/11 78-79...
Page 72 LC-22AD1E LC-22AD1E Ë MAIN Unit - VPC 5/11 80-81...
Page 73 LC-22AD1E LC-22AD1E Ë MAIN Unit - SCALER 6/11 82-83...
Page 74 LC-22AD1E LC-22AD1E Ë MAIN Unit - QS-CONTROL 7/11 84-85...
Page 75 LC-22AD1E LC-22AD1E Ë MAIN Unit - GRAY-LEVEL 8/11 86-87...
Page 76 LC-22AD1E LC-22AD1E Ë MAIN Unit - PANEL 9/11 88-89...
Page 77 LC-22AD1E LC-22AD1E Ë MAIN Unit - 1BIT-CONTROL 10/11 90-91...
Page 78 LC-22AD1E LC-22AD1E Ë MAIN Unit - CTRL-SW 11/11 92-93...
Page 79 LC-22AD1E LC-22AD1E PRINTED WIRING BOARD ASSEMBLIES INVERTER Unit (Side-A) C6580 D6554 FH6557 FH6558 FH6554 FH6553 FH6552 FH6551 C6572 R6565 R6561 R6562 D6553 R6564 D6551 R6554 D6552 R6558 Q6553 C6578 C6577 R6555 C6570 R6551 C6562 C6563 C6569 C6555 C6554 C6575 C6560...
Page 80 LC-22AD1E LC-22AD1E AV Unit (Side-A) 96-97...
Page 81 LC-22AD1E LC-22AD1E AV Unit(Chip Parts Side-A) J1101 J1101 SC1101 SC1101 SC1102 SC1102 J701 J701 R1130 R1130 R1129 R1129 C1120 C1120 R1138 R1138 R1132 R1132 R1134 R1134 C1114 C1114 C1115 C1115 R1113 R1113 R1112 R1112 D1122 D1122 R1123 R1123 C1132 C1132...
Page 82 LC-22AD1E LC-22AD1E AV Unit (Side-B) 100-101...
Page 83 LC-22AD1E R/C, LED Unit (Side-A) R/C, LED Unit (Side-B) R101 C101 C101 R111 R101 R112 Q105 Q105 R110 R107 R107 P101 P101 IC101 IC101 J101 J101 D104 D104 D103 D103 D102 D102 RMC101 RMC101 R109 R109 SLD1 SLD1 R113 R113...
Page 84 LC-22AD1E OPERATION Unit (Side-A) OPERATION Unit (Side-B) R134 R134 R132 R132 R131 R131 S136 S136 OPERATION Unit (Chip Parts Side-B)
Page 85 LC-22AD1E EXT-SP TERMINAL Unit (Side-A) EXT-SP TERMINAL Unit (Side-B)
Page 86 LC-22AD1E SP-JACK Unit (Side-A) SP-JACK Unit (Side-B)
Page 87 LC-22AD1E LC-22AD1E MAIN Unit (Side-A) 106-107...
Page 88 LC-22AD1E LC-22AD1E MAIN Unit (Side-B) 108-109...
Page 89 LC-22AD1E LC-22AD1E MAIN Unit (Chip Parts Side-A) P3405 P3405 R1610 R1610 SC4902 SC4902 SC4901 SC4901 C4630 C4630 R1660 R1660 P3503 P3503 L4601 L4601 R1666 R1666 C3468 C3468 IC4602 IC4602 C1660 C1660 C4912 C4912 C4908 C4908 C4911 C4911 FB4902 FB4902 IC4604...
Page 90 LC-22AD1E LC-22AD1E MAIN Unit (Chip Parts Side-B) TL4988 TL4988 TL4995 TL4995 TL4989 TL4989 TL4946 TL4946 TL4940 TL4940 TL4935 TL4935 TL4930 TL4930 TL4925 TL4925 TL4920 TL4920 TL4915 TL4915 TL4910 TL4910 TL4905 TL4905 TL4903 TL4903 TL4987 TL4987 TL4982 TL4982 TL4977 TL4977 TL4972...
Page 91: Printed Wiring Board Assemblies
LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code PARTS LIST DUNTKB973FE04 INVERTER Unit PARTS REPLACEMENT TRANSISTORS Q6551 VS2SC5886++-1Y J 2SC5886 Replacement parts which have these special safety characteristics Q6552 VS2SC5886++-1Y J 2SC5886 identified in this manual; electrical components having such features...
Page 92 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKB973FE04 DUNTKC160DE01 INVERTER Unit (Continued) AV Unit R6565 VRS-CY1JF822JY J 8.2k 1/16W Metal Oxide OPT DEVICE R6566 VRS-CY1JF333JY J 33k 1/16W Metal Oxide IC1101 VHPGP1FH5TZ-1 J PhotoDiode R6567 VRS-TW2ED182JY J 1.8k 1/4W...
Page 93 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKC160DE01 MISCELLANEOUS PARTS J701 QJAKE0193CEZZ J Jack, POWER INPUT AV Unit (Continued) J1101 QJAKGA004WJZZ J Jack, AV-IN3 VIDEO, AUDIO L/R J1104 QSOCD0456CEZZ J Socket, AV-IN3 S-VIDEO C1133 VCEASX1CN106MY J 10...
Page 94 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKC162DE01 DUNTKC163DE01 R/C, LED Unit OPERATION Unit INTEGRATED CIRCUIT DIODES IC101 VHiTPS850++-1Y J TPS850 D131 RH-EXA092WJZZY J Zener Diode, 12V D132 RH-EXA092WJZZY J Zener Diode, 12V TRANSISTORS...
Page 95 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKC166DE01 DUNTKC164DE01 EXT-SP TERMINAL Unit MAIN Unit TUNER FB207 RBLN-0250TAZZY J Ferrite Bead FB208 RBLN-0250TAZZY J Ferrite Bead NOTE: THE PARTS HERE SHOWN ARE SUPPIED AS AN...
Page 96 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKC166DE01 D3204 VHDDAN222//-1Y J Diode D3207 VHDMA3120WA-1Y J Diode MAIN Unit (Continued) D3208 RH-EX1259CEZZY J Zener Diode, 8.2V D3211 RH-EX1264CEZZY J Zener Diode, 10V IC4511 VHiiCS570B+-1Y J ICS570BT...
Page 97 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKC166DE01 TRANSFORMER T3700 RTRNWA006WJZZY J Transformer MAIN Unit (Continued) CONTROLS FL3701 RFiLN0097GEZZY J Filter R3717 RVR-M0111CEZZY J Variable Resistor 1k FL4501 RFiLNA002WJZZY J Filter R4525 RVR-M0116CEZZY J Variable Resistor...
Page 98 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code C2567 VCKYCY1EF104ZY J 0.1 Ceramic DUNTKC166DE01 C2568 VCEASW0JN477MY J 470 6.3V Electrolytic MAIN Unit (Continued) C2569 VCKYCY1EF104ZY J 0.1 Ceramic C2570 VCE9PV1CN106MY J 10 Elect. (N.P) C1619 VCKYCY1EF104ZY J 0.1...
Page 99 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code C3506 VCKYCY1HB103KY J 0.01 Ceramic DUNTKC166DE01 C3508 VCEASX1CN107MY J 100 Electrolytic MAIN Unit (Continued) C3509 VCKYCY1HF103ZY J 0.01 Ceramic C3510 VCKYCY1EF104ZY J 0.1 Ceramic C3298 VCE9PV1CN106MY J 10 Elect.
Page 100 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code C4616 VCCCCY1HH180JY J 18p Ceramic DUNTKC166DE01 C4617 VCKYCY1EB103KY J 0.01 Ceramic MAIN Unit (Continued) C4618 VCKYCY1CB104KY J 0.1 Ceramic C4619 VCKYCY1EB103KY J 0.01 Ceramic C4516 RC-KZA047WJZZY J 1 Ceramic C4620 VCKYCY1EB103KY J 0.01...
Page 101 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code R1617 VRS-CY1JF102JY J 1k 1/16W Metal Oxide DUNTKC166DE01 R1618 VRS-CY1JF000JY 1/16W Metal Oxide MAIN Unit (Continued) R1619 VRS-CY1JF101JY J 100 1/16W Metal Oxide R1620 VRS-CY1JF223JY J 22k 1/16W Metal Oxide C4747 VCKYCY1EF104ZY J 0.1...
Page 102 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code R3431 VRS-CA1JF101JY J 100 1/16W Metal Oxide DUNTKC166DE01 R3432 VRS-CY1JF472JY J 4.7k 1/16W Metal Oxide MAIN Unit (Continued) R3433 VRS-CY1JF105FY J 1M 1/16W Metal Oxide R3434 VRS-CY1JF271JY...
Page 103 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code R3601 VRS-CY1JF562JY J 5.6k 1/16W Metal Oxide DUNTKC166DE01 R3602 VRS-CY1JF102JY J 1k 1/16W Metal Oxide MAIN Unit (Continued) R3604 VRS-CY1JF101JY J 100 1/16W Metal Oxide R3605 VRS-CY1JF101JY...
Page 104 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code R4573 VRS-CY1JF330FY J 33 1/16W Metal Oxide DUNTKC166DE01 R4574 VRS-CY1JF330FY J 33 1/16W Metal Oxide MAIN Unit (Continued) R4575 VRS-CY1JF330JY J 33 1/16W Metal Oxide R4576 VRS-CY1JF220FY...
Page 105 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code R4782 VRS-CY1JF132FY J 1.3k 1/16W Metal Oxide DUNTKC166DE01 R4784 VRS-CB1JF100JY J 10 1/16W Metal Oxide MAIN Unit (Continued) R4785 VRS-CY1JF100FY J 10 1/16W Metal Oxide R4786 VRS-CY1JF102FY...
Page 106 LC-22AD1E Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKC166DE01 MAIN Unit (Continued) FB1609 VRS-CY1JF000JY J 00 1/16W 5% Metal Oxide FB1610 RBLN-0050TAZZY J Ferrite Bead FB1611 RBLN-0050TAZZY J Ferrite Bead FB1640 RBLN-0076TAZZY J Ferrite Bead...
Page 107: Cabinet And Mechanical Parts
LC-22AD1E CABINET AND MECHANICAL PARTS 5-2-5 5-2-7 5-2-4 5-2-1 5-2-2 5-2-3 5-19 5-14 5-2-2 5-2-6 5-19 5-11 5-10 5-20 5-12 5-13 5-18 5-19 5-16 5-15 10-2 10-1 5-19 5-17 3-13 3-16 3-2-1 3-2-2 3-12 3-10 3-17 3-15 3-11 11-1 3-18...
Page 108 J Lamp Fixing Holder (Bottom), x2 PFLT-A037WJZZ J Felt LHLDZA223WJKZ J Lamp Clip, x2 PSLDMA349WJZZ J Gasket MSPRP1220CEFW J ITO Earth Spring Not Available – Sirial No.Label (LC-22AD1E) — PSPAH0678CEZZ J HIMERON, x2 RCORFA028WJZZ J Core, x2 5-10 PCOVU0108CEZZ J Diffusion Panel...
Page 109: Supplied Accessories
(Continued) RCORFA020WJZZ J Ferrite Core XEBS940P16000 J Screw, x6 UADP-A056WJPZ J AC Adaptor å QEARPA103WJFW J Ground-Part QACCKA007WJPZ J AC Cord (LC-22AD1E) å QEARPA104WJFW J Ground-Part QACCBA022WJPZ J AC Cord (LC-22AD1K) å PSPAZA416WJZZ J Spacer LHLDW0110CEZZ J Cable Clamp, x2...
Page 110: Packing Of The Set
Operation Manual Wrapping Bag (SSAKA0170CEZZ) (TiNS-B110WJZZ) Card (TCADEA028WJZZ) GUARANTEE CARD (LC-22AD1K) (TGAN-1688CEN1) Remote Control (RRMCGA206WJSA) AC Adapter (UADP-A056WJPZ) AC Cord LC-22AD1E (QACCKA007WJPZ) LC-22AD1K (QACCBA022WJPZ) Cable Clmp（2pcs.） (LHLDW0110CEZZ) Battery (2pcs) Packing Add SPAKXA422WJZZ Wrapping Paper SPAKXA235WJZZ Packing Add SPAKXA422WJZZ Packing Case...
Page 111 LC-22AD1E COPYRIGHT © 2004 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

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