Sharp Aquos LC-37D90U User manual

SERVICE MANUAL
No. S47E8LC37D90U
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the
safety and performance of the set.
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
TopPage
LC-37D90U
LC-37D90U
LCD COLOR TELEVISION
MODEL
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its orig-
inal condition and only parts identical to those specified should be used.
In this Service Manual, only parts in the LCD module are shown. For the other points, refer to the LC-37D90U
(S56S8LC37D90U) Service Manual.
OUTLINE
SUPPLEMENT

LC-37D90U
i
LC-37D90U Service Manual
OUTLINE AND ADJUSTMENT
[1] Outline
In this Service Manual, only parts in the LCD module are shown. For the other points, refer to the LC-37D90U (S56S8LC37D90U) Service Manual.
[2] Adjustment
When replacing the LCD control PCB, follow these steps to adjust VCOM.
1) Remove the wire from the LCD control PCB CN3.
2) Connect a wire of the VCOM adjustment jig (electronic volume adjustment BOX) to CN3 (see Fig. 1).
3) Turn on the TV set.
4) Turn on the jig (connect to the AC).
5) Enter the process mode to display the item “LCD TEST PATTERN OFF” (see Fig. 2).
6) Press the volume up key once to display a flicker pattern.
7) Press the jig's UP/DOWN switch while looking at the screen to adjust the point so that the flicker is minimized (see Fig. 3).
8) After completing adjustment, press the WRITE switch and make sure the lamp of the WRITE button goes out. (Writing is complete when the lamp
goes out.)
9) Turn off the jig (turn the AC off).
10)Turn off the TV set.
11)Remove the jig’s wire connected to CN3.
12)Reconnect the wire of the set to CN3.
Fig. 1 Jig connecting location
Fig. 2 Test pattern selection screen
Fig. 3 VCOM adjustment jig (RUNTZA059WJZZ)
Jig connection

PARTS GUIDE
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and performance of the set.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
LC-37D90U
PartsGuide
[1] LCD MODULE Assembly
CONTENTS
LC-37D90U
LCD COLOR TELEVISION
MODEL

LC-37D90U
2
[1] LCD MODULE Assembly
19
2
18
16
15
17
4
1
8
9
3
5
7
7
10
24
22
21
23
20
23
10
11
12
13
14
6

LC-37D90U
3
NO. PARTS CODE PRICE
RANK
NEW
MARK
PART
DELIVERY
DESCRIPTION
[1] LCD MODULE Assembly
1R1LK370D3LZ1AB EZ N J LCD Module Ass'y
2QPWBM0197TPZZ AH N J CS-FPC1,x2
3CPWBX3348TPZC BV N J LCD CONTROL Unit
4PSLDMA992WJFW AL N J Cover (LCD Control Unit (Top))
5PSLDMA804WJM1 AM N J Cover (LCD Control Unit (Bottom))
6LX-BZ2118TPZZ AA N J Screw (for Vessel), x10
7XBPS730P06WS0 AA J Screw (for INV, LCD CONTROL), x13
8CCHSMA310WJ01 BP N J Chassis Ass'y
9KLMP-A127WJZZ BA N J Lamp Unit, x11
10 LHLDZA682WJKZ AX N J Lamp Holder, x2
11 PCOVUA090WJZZ BA N J Diffusion Panel
12 PSHEPA423WJZZ AU N J Reflection Sheet
13 PSHEPA424WJZZ BM N J Prism Sheet
14 PSHEPA425WJZZ BT N J Optical Sheet
15 PSLDMA953WJFW AN N J Inverter Cover
16 RUNTKA244WJZZ BM N J INVERTER Unit A
17 RUNTKA245WJZZ BG N J INVERTER Unit B
18 PSPAZB030WJKZ AB N J Inverter Spacer, x9
19 RCORFA061WJZZ AG N J Core, x2
20 PTPEZA018WJZZ AD N J PET Tape, x2
21 PZETE3914TPZZ AD N J Tape, x2
22 PZETE3915TPZZ AB N J Tape
23 PSHEP2529TPZZ AB N J Conductive Tape, x4
24 PSHEP2583TPZZ AC N J Conductive Tape

LC-37D90U
COPYRIGHT © 2007 BY SHARP CORPORATION
ALL RIGHTS RESERVED.
No Part of this publication may be reproduced,
stored in a retrieval system, or transmitted in
any from or by any means, electronic, mechanical,
photocopying, recording, or otherwise, without
prior written permission of the publisher.
SHARP CORPORATION
AV Systems Group
CS Promotion Center
Yaita,Tochigi 329-2193, Japan
TQ2192-S YT. DS