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Sharp LL-T15S3 Service Manual

Sharp LL-T15S3 Service Manual

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CHAPTER 1. OUTLINE OF THE PRODUCT,
CHAPTER 2. CONNECTION, ADJUSTMENT,
CHAPTER 3. DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . .3 - 1
CHAPTER 4. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 1
CHAPTER 5. CONNECTOR SIGNAL TABLE •
APPENDIX : IC DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 - 1
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.
SERVICE MANUAL
CONTENTS
NOMENCLATURE AND FUNCTION . . . . . . . . . . . . . . . . . .1 - 1
OPERATION, AND FUNCTIONS. . . . . . . . . . . . . . . . . . . . .2 - 1
CIRCUIT DIAGRAM • PWB LAYOUT . . . . . . . . . . . . . . . . .5 - 1
SHARP CORPORATION
CODE : 00Z
LCD MONITOR
LL-T15S3
MODEL
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
LLT15S3SME

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Summary of Contents for Sharp LL-T15S3

  • Page 1 SERVICE MANUAL CODE : 00Z LLT15S3SME LCD MONITOR LL-T15S3 MODEL CONTENTS CHAPTER 1. OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION ....1 - 1 CHAPTER 2.
  • Page 2 • If the monitor is not receiving any signal (synch signal), [NO SIGNAL] 338 (W) x 145 (D) x 313 (H) mm will appear. • Weight Approx. 3.9kg (approx. 3.3kg excluding stand) (Excluding analog signal cable.) LL-T15S3 OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION 1 – 1...
  • Page 3 11. Headphone terminal: Headphones (commercially available) can be connected here. 12. Ventilation openings: Note: Never block the ventilation openings as this may lead to overheating inside the monitor and result in malfunction. LL-T15S3 OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION 1 – 2...
  • Page 4 2. Press down on the stand and gently fold back the monitor. • Raise the display section until it stops. (when titled forward approx. 5°) 2. Adjust to an easy to view angle. LL-T15S3 OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION 1 – 3...
  • Page 5 • Depending on the computer or OS, it may be necessary to use the Audio cable computer to install monitor set-up information. If so, follow the steps below to install the monitor set-up information. LL-T15S3 CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS 2 – 1...
  • Page 6 Using different screws could lead to a malfunction. 4. Follow instruction no.6 to attach the arm to the monitor, then con- nect the analog signal cable, the audio cable and the power cord. LL-T15S3 CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS 2 – 2...
  • Page 7 Pink 3 Red When the test is terminate, Power off <VERSION & CHECK SUM> AGING TEST VERSION : 1.01 (200XXXXX) > : SET CHECK SUM : OK XXXX MENU : END LL-T15S3 CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS 2 – 3...
  • Page 8 VIVID: Displays an image with dynamic and VIVID pri- mary colors. Volume: 0~100 Adjusting the backlight and speaker volume Bright: 0~31 POWER OFF LL-T15S3 CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS 2 – 4...
  • Page 9 2) Remove the screws B, and then remove the frame 2 from the LCD module 3. 3. REMOVING POWER SUPPLY/INVERTER BOARD AND MAIN BOARD 1) Remove the hex. screws A and screws B, and then remove the shield. LL-T15S3 DISASSEMBLY AND ASSEMBLY 3 – 1...
  • Page 10 * Check the path between P5 and U6. * Check the cable for disconnection. Replace LCD module lamp with a new one. Replace any defective unit. [ 1) Power supply PWB, 2) Main PWB, 3) Switch PWB ] with a new one. LL-T15S3 TROUBLESHOOTING 4 – 1...
  • Page 11 CONT is changed after H-POS 1) Check if module control signal is output (U1). or V-POS is set? 2) Check if VLCD voltage is output normally. Switch PWB defective LCD panel defective. Main PWB defective. LL-T15S3 TROUBLESHOOTING 4 – 2...
  • Page 12 HSYNC INV_ON CONNECTOR P5 POW1 LED1 LED2 KEY1 KEY2 KEY3 KEY4 CONNECTOR P8 Green Blue Ground Ground R-GND G-GND B-GND Ground (SDA) H-sync V-sync (SCL) VLCD VLCD LL-T15S3 CONNECTOR SIGNAL TABLE • CIRCUIT DIAGRAM • PWB LAYOUT 5 – 1...
  • Page 13 LL-T15S3 CONNECTOR SIGNAL TABLE • CIRCUIT DIAGRAM • PWB LAYOUT 5 – 2...
  • Page 14 LL-T15S3 CONNECTOR SIGNAL TABLE • CIRCUIT DIAGRAM • PWB LAYOUT 5 – 3...
  • Page 15 LL-T15S3 CONNECTOR SIGNAL TABLE • CIRCUIT DIAGRAM • PWB LAYOUT 5 – 4...
  • Page 16 LL-T15S3 CONNECTOR SIGNAL TABLE • CIRCUIT DIAGRAM • PWB LAYOUT 5 – 5...
  • Page 17 LL-T15S3 CONNECTOR SIGNAL TABLE • CIRCUIT DIAGRAM • PWB LAYOUT 5 – 6...
  • Page 18 LL-T15S3 CONNECTOR SIGNAL TABLE • CIRCUIT DIAGRAM • PWB LAYOUT 5 – 7...
  • Page 19 LL-T15S3 CONNECTOR SIGNAL TABLE • CIRCUIT DIAGRAM • PWB LAYOUT 5 – 8...
  • Page 20 LL-T15S3 CONNECTOR SIGNAL TABLE • CIRCUIT DIAGRAM • PWB LAYOUT 5 – 9...
  • Page 21 RED_INB_1/UV1 GRN_OUTA_4 RED_INB_2/UV2 DOBVDD RED_INB_3/UV3 GRN_OUTA_3 RED_INB_4/UV4 GRN_OUTA_2 RED_INB_5/UV5 GRN_OUTA_1 RED_INB_6/UV6 GRN_OUTA_0 RED_INB_7/UV7 DOBVSS DIBVDD BLU_OUTA_7 DVDD BLU_OUTA_6 DVSS BLU_OUTA_5 DTEST BLU_OUTA_4 VCCD DOBVDD DGND BLU_OUTA_3 VGA_VSYNC BLU_OUTA_2 VGA_HSYNC BLU_OUTA_1 SOGI BLU_OUTA_0 LL-T15S3 APPENDIX : IC DESCRIPTION 6 – 1...
  • Page 22 Ground Digital ground 075 DIBVSS Ground Digital Input Buffer Ground 035 DTEST Digital test output 076 DISP_DE Display Enable 036 VCCD Power Digital power 077 DISP_VSYNC Display Vertical Sync 037 DGND Ground Digital ground LL-T15S3 APPENDIX : IC DESCRIPTION 6 – 2...
  • Page 23 Display Port B Green Output Bit 2 124 GRN_OUTB_3 Display Port B Green Output Bit 3 125 DOBVDD Power Digital Output Buffer Power 126 GRN_OUTB_4 Display Port B Green Output Bit 4 LL-T15S3 APPENDIX : IC DESCRIPTION 6 – 3...
  • Page 24 YUV/ COMPOSITE CAP_VS Panel TVCLK VSYNC HSYNC/XSYNC VDD Control Power- VBL Control Switching Control VEE Control OSD-FSW OSD-CLK IRQ# MASCOT DOBVDD Micro-controller DOBVSS with EEPROM OSD-R RESET# OSD-G OSD-B DCVDD OSD-I DCVSS LL-T15S3 APPENDIX : IC DESCRIPTION 6 – 4...
  • Page 25 © COPYRIGHT 2003 BY SHARP CORPORATION All rights reserved. Printed in Japan. 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.