Ctx S762A SERVICE MANUAL
SERVICE MANUAL
S762A
The Monitor Specialists
EDITION 1
DEC. 2003
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S762A
TABLE OF CONTENTS
CONTENTS PAGE
Sections
1. Scope 4
2. Input requirements 5
3. Electrical Characteristics 6~10
4.Trouble Shooting 11~16
5. Parts List 16
Service Manual
Appendix
1. Main Board Circuit Diagram
2. Assembly Explosion Drawing
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S762A
Service Manual
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.
The publisher has been trying its best to make this publication perfect, and in this manner takes no
responsibility for the use of any of the materials or methods described in this manual, or for the products
thereof. Neither will the publisher be responsible for any damages caused by misuse or misquotation.
Information in this manual is subject to change by the publisher without any notice in advance.
CTX is a registered trademark of Chuntex Electronic Co., Ltd.
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S762A
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
1 Universal input AC/DC power supply inside the monitor
2 Analog RGB interface (VGA ) 30~80KHz, 59~75Hz, 135MHz
3 17” SXGA 1280*1024, TFT LCD panel
4
Function keys * 5 : Power On/Off, ESC,△ (up), ▽ (down),
Direct Acess function keys : △ for
5
ESC for audio mute function.(S761A/S762A/S760A only)
6 Green/Amber LED indicator for power on/power saving
7 Plug & play support with DDC2B protocol installed.
8 Power saving mode compliant with Energy Star
9 OSD (on screen display) MENU operation
9.1 Brightness adjustment
9.2 Contrast adjustment
9.3 Auto tune function (VGA)
9.4 Color selection
9.5 Image adjustment
9.6 Language selection
9.7 OSD position adjustment
9.8 Reset function
9.9 1W * 2 Audio function inside the monitor (S762A/S761A /S760A Only)
9.10 Volume adjust by OSD (S762A/S761A/S760A Only)
contrast function, ▽ for brightness function .
(enter)
Service Manual
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S762A
2. INPUT REQUIREMENTS
2.1 Input Power
2.1.1. Power Source
2.1.2. Power Consumption
2.1.3. AC Line Drop Out
2.1.4. AC Wave Distortion
2.1.5. In-rush Current
2.1.6. Power Cord
2.2 Display Input
2.2.1. Analog Input RGB Video
2.2.1.1 Sync Signal
Analog Input Connection a. Captive cable length 1.5M in LCD Monitor end, D-sub
b. A female Mini D-sub 15 pin base.
100 ~ 240 Vac, + -10%, 50/60 Hz
Normal operating mode
Audio function is operating at max output: ≦ 39W
w/o audio function: ≦ 36W
Power saving mode
Audio function is operating at max output: ≦ 7W
w/o audio function: ≦ 2W
Power switch off: ≦ 1W
Picture must not disappear while AC 100 V input drop out(10ms, 100%)
10% max. Permitted
50 A max at 240 Vac cold start
Detachable, 3P with ground type.
Analogue, 0.0 to 0.7 V peak to peak
Separate RGB
Input impedance 75 Ohm
Positive polarity
Separate horizontal & vertical sync (3.3V & 5V)
Low level 0.8 V maximum
High level 2.0 V minimum
Positive or negative polarity
male connector in another end.
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S762A
Pin 1 Red
Pin 2 Green
Pin 3 Blue
Pin 4 No Connection
Pin 5 Ground
Pin 6 R Return
Pin 7 G Return
Pin 8 B Return
2.3 Audio Input (S760A/S761A/S762A only)
2.3.1 Audio Input Signal Right &Left channels.
Input level: 1Vrms(typ), 2Vrms(max)
Input Impedance: 15Kohm
2.3.2 Audio Input Connection a. Detachable stereo phone head in two ends signal cable.
b. A female stereo phone jack base.
3. ELECTRICAL CHARACTERISTICS
3.1 LCD Panel
3.1.1. Type 17” diagonal, SXGA resolution, color TFT-LCD
3.1.2. Pixel structure
3.1.3. Gray scale 16 million colors.
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 of type1 or type 2
Type
Cluster of type3 faults (Note4)
Type
Total Pixel Faults
Note 1 : Bright pixels in full black pattern.
Note 2 : Dark pixels in full white pattern
Note 3 : fault Pixel / Sub-Pixel : The pixel or sub-pixel is abnormal but not bright/dark pixel.
Note 4 : Fault Cluster : Two or more Pixels/Sub-pixels with faults within 5 * 5 block of pixels.
Model
Project
R/G/B sub-pixels in vertical stripes
1280 x 1024 array matrix
a-Si TFT active matrix
3H hard coating, anti-static, anti-glare
Integral CCFL, type to support field replacement.
Life time 30000 hours @ 25C, 50% of initial value.
S762A/S761A/S760A/S762/S761/S760
LBL17S24HA01/LBL17B24HA01/LBL17W24HA01
LBL17S24HA/LBL17B24HA/LBL17W24HA
Service Manual
Pin 9 DDC +5V
Pin 10 Ground
Pin 11 Ground
Pin 12 SDA
Pin 13 H. Sync
Pin 14 V. Sync
Pin 15 SCL
≦ 5
≦ 5
≦ 3
≦ 2
≦ 3
≦ 8
6
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