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CTX S762A Service Manual
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CTX S762A Service Manual

17” sxga tft lcd display monitor
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S762A

SERVICE MANUAL

EDITION 1
The Monitor Specialists
DEC. 2003

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Summary of Contents for CTX S762A

  • Page 1: Service Manual

    S762A SERVICE MANUAL EDITION 1 The Monitor Specialists DEC. 2003...

  • Page 2: Table Of Contents

    CONTENTS Sections 1. Scope 2. Input requirements 3. Electrical Characteristics 4.Trouble Shooting 5. Parts List Appendix 1. Main Board Circuit Diagram 2. Assembly Explosion Drawing TABLE OF CONTENTS Service Manual S762A PAGE 6~10 11~16...
  • Page 3 S762A Copyright © 2003 by Chuntex Electronic Co., Ltd. The CTX SERVICE MANUAL is published by Chuntex Electronic Co., Ltd All rights reserved. No part of this manual may be used, copied, reproduced, or transmitted in any form or by any means for any purpose without the express written permission of the publisher.

  • Page 4: Scope

    1. SCOPE This specification defines the design and performance requirements for the 17” SXGA TFT LCD display monitor “S762A “. The features of “S762A” is listed in the following table : Feature Description Universal input AC/DC power supply inside the monitor Analog RGB interface (VGA ) 30~80KHz, 59~75Hz, 135MHz 17”...

  • Page 5: Input Requirements

    Separate horizontal & vertical sync (3.3V & 5V) Low level 0.8 V maximum High level 2.0 V minimum Positive or negative polarity a. Captive cable length 1.5M in LCD Monitor end, D-sub male connector in another end. b. A female Mini D-sub 15 pin base. Service Manual...

  • Page 6: Electrical Characteristics

    2.3 Audio Input (S760A/S761A/S762A only) 2.3.1 Audio Input Signal 2.3.2 Audio Input Connection ELECTRICAL CHARACTERISTICS 3.1 LCD Panel 3.1.1. Type 3.1.2. Pixel structure 3.1.3. Gray scale 3.1.4. Surface treatment 3.1.5. Backlight 3.1.6 Pixel Faults Pixel Faults type Type Bright Pixels (Note 1)
  • Page 7 0.321 0.203 0.593 14.272 13.238 13.333 0.106 0.050 0.044 0.513 0.466 0.474 13.599 12.795 12.8 0.054 0.017 0.015 Service Manual S762A VESA VESA VESA 37.5 37.879 48.077 46.875 60.317 72.188 75.000 31.5 26.4 20.8 21.333 1.616 1.28 3.232 20.0 16.0 16.162...
  • Page 8 Video H Sync Video V Sync 3.3 Plug & Play 3.4 Scanning characteristics DDC 2B data transmission only for I Service Manual S762A C BUS interface card.
  • Page 9 3.6.4.2 Brightness ( *3.6.4.3 Mute On ( *3.6.4.4 Mute Off ( *3.6.4.5 In monitor power saving mode Note:* means S762A only Table 2 S762A OSD Control Map 1.VGA-D15 input: Service Manual 30KHz to 80KHz 59Hz to 75Hz Stereo BTL audio output amplifier with DC volume control with two 1W speakers.
  • Page 10 Signal Out of Range. horizontal or vertical sync are absent and when the monitor is turned on. After 5 sec isn’t to detect H or V Sync then show “No Signal Input” for 5 seconds and then show ” Power down” message on screen 2 sec. And then the monitor shall go to power saving status.

  • Page 11: Trouble Shooting

    This monitor will meet the low power specification, Including USA governmental requirements For Energy Star, the NUTEK standard and the VESA DPMS standard which detected the Hori. /Vert. Sync signal from host CPU. A dual color (green/amber) LED is located on the front bezel to indicate the power management states.
  • Page 12 4.2 Power Cir cuit T r ouble shooting 4.3 No Back light T r ouble shooting 4.4 Per for mance T r ouble shooting 4.5 O.S.D. T r ouble shooting 4.6 A udio T r ouble shooting Service Manual S762A...
  • Page 13 Change AC power cor d and r etr y Change power boar d and r etr y Change display boar d and r etr y No Tr ouble Found 4.3 Backlight Trouble Shooting Service Manual Back to 4.1 M ain Pr ocedur e S762A...
  • Page 14 Change power boar d and r etr y Change main boar d and r etr y Change L CD panel and r etr y No Tr ouble Found 4.4 Performance Trouble Shooting Service Manual Back to 4.1 M ain Pr ocedur e S762A...
  • Page 15 Change power board main board Check main Check panel connector Press enter button call OSD Menu try Reset or Auto Tune Service Manual S762A Change main board Change LCD panel Change LCD panel Change Change LCD panel Change...
  • Page 16 4.6 Audio Trouble Shooting Change display boar d and r etr y Change display boar d and r etr y Service Manual S762A Change M ain boar d and r etr y Change M ain boar d and r etr y...
  • Page 17 Audio cable is OK . No Sound? Sound is Br oken Volume can’ t Adiust No Tr ouble Found Change Speaker Change Speaker Change M ain boar d and r etr y Service Manual S762A Change M ain boar d and r etr y...

  • Page 18: Parts List

    06208101000H USER MANUAL 65B70-1801ZH CABLE AUDIO 98T111-P61 65S10-150CZH CABLE SIGNAL DESCRIPTION MAIN PCBA POWER PCBA DISPLAY PCBA LCD TFT 1280*1024 AU SUB ASSY BASE HOLDER (R) HOLDER (L) PLASTIC HANDLE BAR PLASTIC CLAP BOARD DISKETTE 3.5IN 1.44M Service Manual S762A...
  • Page 19 Service Manual S762A...