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Summary of Contents for CTX S700A
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Page 1: Service Manual
S700A S700BA S720A 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.
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Page 4: Scope
Auto tune function (VGA) Color selection Image adjustment Language selection OSD position adjustment Reset function 1W * 2 Audio function inside the monitor (S762A/S761A /S760A Only) 9.10 Volume adjust by OSD (S762A/S761A/S760A Only) (enter) contrast function, ▽ for brightness function . -
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) Type Dark Pixels (Note 2) Type Fault Pixels / Sub-Pixels(Note 3) Type Cluster... - Page 7 3.2 Modes and Timing Comparability 3.2.1Analog Input Supported Timing VESA Standard mode: Display Format Horizontal Dots Vertical lines Horizontal Frequency Vertical Frequency ( Hz ) Pixel Rate ( MHz ) 28.322 H. Sync. Polarity A μ S ( Period ) B μ...
- 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 Hot Keys Function 3.6.4.1 Contrast ( 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...
- 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.
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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 Star t Power On I s indicator light? I s back light on? Display per for mance OK ? O.S.D. A dj ustment OK ? A udio Function OK ? No T r ouble Found 4.2 Power Circuit Trouble Shooting 4.2 Power Cir cuit T r ouble shooting 4.3 No Back light...
- Page 13 Star t 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 Star t 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 Start Screen missing color Block on screen Line on screen Screen is flickering Screen white Screen with noise & line bar No Trouble Found 4.5 O.S.D. Trouble Shooting Change VGA cable Change main board Change main board Change power board main board Check main Check panel...
- Page 16 Star t Pr ess Function key No OSD M enu? No Contr ast or Br ight Adj M enu? No Tr ouble Found 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...
- Page 17 Star t M ake sur e sound output, 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...
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Page 18: Parts List
PARTS LIST ITEM PART NUMBER AC1921-B01 DC1725-B01 GC1921-B01 10A17-4A2A SSBASE-509 04008003000H CARTON 0510169800 0510168800 05Z0001900E 05Z0002900E 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... - Page 19 Service Manual S762A...
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