Ctx PV500B, PV500BT, PV500T, PV500A SERVICE MANUAL

PV500T (LPC15W13AA74)

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SERVICE MANUAL

PV500AT (LPC15W13AA75) PV500BT (LPC15B13AA74) PV500BAT (LPC15B13AA75)

CTX

EDITION 1 Ma

2003

Service Guide

TABLE OF CONTENTS

CONTENTS PAGE

Sections

1. Scope 3

2. Input Requirement 3

3. Electrical Characteristics 4~9

4. Trouble Shooting 10~11

5. System Block Diagram 12

6. Touch Panel Control Board I/O Connection 12

PV500T SERIES

7. Inverter Board I/O Connection 13

8. IC Pin Configuration 14~17

9. Pin Assignment 18~25

10. Recommended Spare Parts List (For PV500T) 26

11. Recommended Spare Parts List (For PV500BT/BAT) 27

Appendix

1. Main Board Circuit Diagram

2. Assembly Explosion Drawing

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Service Guide

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

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.

PV500T SERIES

CTX is a registered trademark of Chuntex Electronic Co., Ltd.

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Service Guide

1. SCOPE

Feature Description

9.1 Brightness adjustment

9.2 Contrast adjustment

9.3 Auto tune function (VGA)

9.4 Color selection

9.5 Image adjustment

9.6 Position adjustment

9.7 Language selection

9.8 Reset function 10 Audio module integrated (Speaker * 2, stereo earphone jack)(PV500AT/PV500BAT only) 11 Audio volume adjustment by VR (PV500AT/PV500BAT only) 12 5-wire resistive touch panel function (RS232) 13 Built-in touch panel power with +5V from LCD monitor

This specification defines the design and performance requirements for the 15” XGA TFT LCD display “PV500T “ series. There are 4 models for “ PV500T” series each models with own project code. The features of the 4 models series are listed in the table as below :

1 Universal input AC/DC power adapter 2 Analog RGB interface (VGA ) 30~60KHz, 60~75Hz, 80MHz 3 15” XGA 1024*768, TFT LCD panel 4

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

5

Direct Access function keys : △ for

6 Green/Amber LED indicator for power on/power saving 7 Plug & play support with DDC1/2B protocol installed. 8 Power saving mode compliant with Energy Star 9 OSD (on screen display) MENU operation

contrast function, ▽ for brightness function

PV500T SERIES

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

2.1.7. DC Power Cable

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

Normal operating mode (with Audio) : ≦ 25W

Normal operating mode(w/o Audio) : ≦ 23W

Power saving mode (w/o Audio signal input) : ≦ 4W

Power switch off : ≦ 3W

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. Detachable from display unit and captive with AC/DC adapter.

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Service Guide

2.2 Display Input

2.2.1. RGB Video

2.2.2. Sync Signal

2.2.3. Display Input Connection

b. A female Mini D-sub 15 pin base . Pin 1 Red

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 Input impedance 5K ohm Positive or negative polarity

a. Detachable Mini D-sub 15 pin male in two ends signal cable.

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 (LPC15B13AA75 / LPC15W13AA75 only)

2.3.1. Audio Input Signal Right & Left channels. Input level : 1Vrms(typical), 2Vrms(max)

Input Impedance : 15 K ohm

2.3.2. Audio Input Connection a. Detachable stereo head phone in two ends signal cable.

b. A female stereo phone jack base.

2.4 Touch Signal

2.4.1. RS232 Connection

a. Detachable male RJ-11 and female mini D-sub RS232

9 Pin signal cable.

b. A standard female RJ-11 type base.

Pin 9 No Connection Pin 10 Ground Pin 11 Ground Pin 12 SDA Pin 13 H. Sync Pin 14 V. Sync Pin 15 SCL

PV500T SERIES

RJ-11 RS232 Description Pin 1 Pin 2 Pin 4 Pin 3

4

Pin 2 Pin 3 Pin 5 Pin 1,4,6,7,8,9

RxD TxD GND NC

Service Guide

3. ELECTRICAL CHARACTERISTICS

3.1 Flat Panel

3.1.1. Type

3.1.2. Pixel structure

3.1.3. Gray scale 16 million colors.

3.1.4. Surface treatment 3H hard coating ,anti-static

3.1.5. Backlight

3.1.6 DEFECTS

15” diagonal, XGA resolution, color TFT-LCD

VISUAL INSPECTION

Allowable Defects

Table 1 Defects Dots

Pixel Faults Type

R/G/B sub-pixels in vertical stripes 1024 x 768 array matrix

Integral CCFL , Type to support field replacement. Life time 25000 hours @ 25C, 50% of initial value.

The LCD panel shall be inspected with all pixels set to white, black, red, green, and blue.

No cosmetic defects are allowed except those specified below. The conditions of visual inspections are as follows: Viewing distance is to be approximately 35 cm. Ambient illumination is to be 300 to 500 lux. Defects not apparent within one minute shall be ignored.

Model

PV500T Series

( 0 Pixel Fault )

PV500T SERIES

Type1 Type2 Type3 Type4 Type5

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 Capability

Bright Pixels(Note1) Dark Pixels(Note2) Fault Pixels / Sub-Pixels(Note3) Cluster of type1 or type 2 faults (Note4) Cluster of type3 faults (Note4) Total Pixel Faults

The monitor shall support an internal scaler to enable the monitor to display lower resolution video modes. The scaler shall convert all lower resolution modes up to 1024x768. The monitor shall support all the modes listed in Table 2.

0 0 0 0 0 0

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Service Guide

PV500T SERIES

Table 2. Supported Timing VESA Standard Mode :

Display Format IBM VGA VESA VESA VESA VESA VESA Horizontal Dots 720 640 640 640 800 800 800 Vertical lines 400 480 480 480 600 600 600 Horizontal Frequency

Vertical Frequency ( Hz ) 70 59.94 72.809 75 60.317 72.188 75.000 Pixel Rate ( MHz ) 28.322 25.175 31.5 31.5 40 50 49.5 H. Sync. Polarity - - - - + + +

A μS ( Period ) B μS ( Pulse Width ) C μS ( Back Porch ) D μS ( Active Area ) E μS (Front Porch )

V. Sync. Polarity + - - - + + + O ms ( Period ) 14.268 16.683 13.735 13.333 16.579 13.853 13.333 P ms ( Pulse Width ) 0.064 0.064 0.079 0.080 0.106 0.125 0.064 Q ms ( Back Porch ) 1.112 1.048 0.739 0.427 0.607 0.478 0.448 R ms ( Active Area ) 12.711 15.253 12.678 12.800 15.840 12.480 12.8 S ms ( Front Porch ) 0.381 0.318 0.237 0.027 0.026 0.770 0.021

Display Format

Horizontal Dots 1024 1024 1024

Vertical lines 768 768 768

Horizontal Frequency ( KHz) 48.363 56.746 60.023

Vertical Frequency ( Hz ) 60.004 70.069 75.029

Pixel Rate ( MHz ) 65.0 75 78.75

H. Sync. Polarity - - +

A μ S ( Period )

B μ S ( Pulse Width )

C μ S ( Back Porch )

D μ S ( Active Area )

E μ S (Front Porch ) V. Sync. Polarity - - +

O ms ( Period ) 16.666 14.272 13.238

P ms ( Pulse Width ) 0.124 0.106 0.050

Q ms ( Back Porch ) 0.6 0.513 0.466

R ms ( Active Area ) 15.88 13.599 12.795

S ms ( Front Porch ) 0.062 0.054 0.017

Support Mode :

1024 x 768 @ 72Hz 800 x 600 @ 70Hz 640 x 480 @ 70Hz 640 x 350 @ 70Hz

31.469 37.861 37.5 37.879 48.077 46.875

31.778 26.413 26.667 26.4 20.8 21.333

3.813 1.270 2.032 3.2 2.4 1.616

1.907 4.063 3.810 2.2 1.28 3.232

25.422 20.317 20.317 20.0 16.0 16.162

0.636 0.763 0.508 1.00 1.12 0.323

VESA

20.667 17.707 16.660

2.092 1.813 1.219

2.462 1.920 2.235

15.754 13.653 13.003

0.369 0.321 0.203

VESA

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Service Guide

Fig. 1 Timing Chart

PV500T SERIES

3.3 Plug & Play When the PC system reset or power off to on again,

the DDC 1 of monitor may be disabled to read, because the

3.4 Scanning characteristics

Horizontal frequency

Refresh rate

3.5 Audio Module(LPC15W13AA75 / LPC15B13AA75 only)

3.5.1 Input Level : 1Vrms(typical),2Vrms(max)

3.5.2 Output Power : 1W * 2 (10% THD,1KHz)

3.5.3 Total Harmonic Distortion (THD)…..0.3%(0.5W*2, 1KHz)

3.5.4 Frequency Response : 330 ~ 20KHz

VESA DDC 1/2B Standard

video card pulse will disturb the E² PROM of DDC,so you shouldbe power off then power on monitor again to read DDC1. DDC 2B data transmission only For I²C BUS Interface card.

30KHz to 60KHz

60Hz to 75Hz

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Service Guide

3.6 User Controls and Indicator

3.6.1 Power ON/OFF Switch

3.6.2 LED Indicator

3.6.3 OSD

3.6.3.1 Buttons

3.6.3.2 OSD Menu Level

The switch interrupt the DC supply to the monitor. It shall have no effect on the operation of AC/DC adapter.

The LED color shall indicate power status as shown in paragraph 3.7

ESC ,▽, △,

See Table 3.

PV500T SERIES

Table 3

3.6.4 Hot Keys Function

3.6.4.1 Contrast ( )

3.6.4.2 Brightness ( )

Level 1 Level 2 Level 3 Level 4

Contrast ( icon) Adjustment scale

Brightness ( icon) Adjustment scale

Auto Tune Adjusting

Color

Quality Size

Position Image Pos.

Language English

Press “△ ” to pop up; then press “△ ” or “▽ ” to adjust Contrast up or down.

Press “▽ ” to pop up; then press “△ ” or “▽ ” to adjust Brightness up or down.

9300

6500

User

Phase Focus Dither Text / Gfx

OSD Pos.

Germany

French

Spanish

Red ( icon) Green ( icon) Blue ( icon) Adjustment scale Adjustment scale Adjustment scale Ye s/ N o Available/No Effect

H. Pos. V. P os . Center

Adjustment scale Adjustment scale Adjustment scale

Adjustment scale Adjustment scale Adjusting

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