Ctx S962A SERVICE MANUAL

SERVICE MANUAL

S962A

The Monitor Specialists

EDITION 1

DEC. 2003

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S962A

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 17

Service Manual

Appendix

1. Main Board Circuit Diagram

2. Assembly Explosion Drawing

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S962A

Service Manual

The CTX SERVICE MANUAL is published by Chuntex Electronic Co., Ltd

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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S962A

1. SCOPE

This specification defines the design and performance requirements for the 19” SXGA TFT

LCD display monitor “S962A “.

The features of “S962A” 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 19” SXGA 1280*1024, TFT LCD panel

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Function keys * 5 : Power On/Off, ESC, △ (up), ▽ (down),

Direct Acess function keys : △ for

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audio mute function

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

9.10 Volume adjust by OSD

contrast function, ▽ for brightness function , ESC for

(enter)

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S962A

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

100 ~ 240 Vac, + -10%, 50/60 Hz

Normal operating mode Audio function is operating at max output: ≦ 43W

w/o audio function: ≦ 36W Power saving mode Audio function is operating at max output: ≦ 7W

w/o audio function: ≦ 2W

Power switch off: ≦ 1.5W

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

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S962A

Analog Input Connection 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. 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

Service Manual

Pin 9 No Connection Pin 10 Ground Pin 11 Ground Pin 12 SDA Pin 13 H. Sync

Pin 14 V. Sync Pin 15 SCL

2.3 Audio Input

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 19” diagonal, SXGA resolution, color TFT-LCD

3.1.2. Pixel structure

3.1.3. Gray scale 16.7 million colors.

3.1.4. Surface treatment

3.1.5. Backlight

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.

3.1.6 Pixel Faults

Model

Project

Pixel Faults type

Type1 Type2 Type3 Type4 Type5 Type6

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.

3.2 Modes and Timing Comparability

Bright Pixels (Note 1)

Dark Pixels (Note 2)

Fault Pixels / Sub-Pixels (Note 3)

Cluster of type1 or type 2 faults (Note 4)

Cluster of type3 faults (Note4)

Total Pixel Faults

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S962A LBL19SS4HA01

≦ 5 ≦ 5 ≦ 3 ≦ 2 ≦ 3 ≦ 8