PV500T (LPC15W13AA74) PV500AT (LPC15W13AA75) PV500BT (LPC15B13AA74) PV500BAT (LPC15B13AA75) SERVICE MANUAL CTX EDITION 1 May 2003 Service Guide TABLE OF CONTENTS CONTENTS Sections 1. Scope 2. Input Requirement 3. Electrical Characteristics 4. Trouble Shooting 5. System Block Diagram 6. Touch Panel Control Board I/O Connection 7. Inverter Board I/O Connection 8. IC Pin Configuration 9. Pin Assignment 10. Recommended Spare Parts List (For PV500T) 11. Recommended Spare Parts List (For PV500BT/BAT) 3 3 4~9 10~11 12 12 13 14~17 18~25 26 27 PAGE PV500T SERIES Appendix 1. Main Board Circuit Diagram 2. Assembly Explosion Drawing 1 Service Guide Copyright © 2003 by Chuntex Electronic Co., Ltd. PV500T SERIES 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. the publisher be responsible for any damages caused by misuse or misquotation. Neither will 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. 2 Service Guide PV500T SERIES 1. SCOPE This specification defines the design and performance requirements for the 15" 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 : Feature Description 1 2 3 4 5 6 7 8 9 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 10 11 12 13 Universal input AC/DC power adapter Analog RGB interface (VGA ) 30~60KHz, 60~75Hz, 80MHz 15" XGA 1024*768, TFT LCD panel Function keys * 5 : Power On/Off, ESC, (up), (down), (enter) Direct Access function keys : for contrast function, for brightness function Green/Amber LED indicator for power on/power saving Plug & play support with DDC1/2B protocol installed. Power saving mode compliant with Energy Star OSD (on screen display) MENU operation Brightness adjustment Contrast adjustment Auto tune function (VGA) Color selection Image adjustment Position adjustment Language selection Reset function Audio module integrated (Speaker * 2, stereo earphone jack)(PV500AT/PV500BAT only) Audio volume adjustment by VR (PV500AT/PV500BAT only) 5-wire resistive touch panel function (RS232) Built-in touch panel power with +5V from LCD monitor XGA TFT LCD 2. INPUT REQUIREMENTS 2.1 Input Power 2.1.1. Power Source 100 ~ 240 Vac, + -10%, 50/60 Hz, : 25W : 23W : 3W 2.1.2. Power Consumption Normal operating mode (with Audio) Normal operating mode(w/o Audio) Power switch off Power saving mode (w/o Audio signal input) : 4W 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 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. 3 Service Guide 2.2 Display Input 2.2.1. RGB Video 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 PV500T SERIES 2.2.2. Sync Signal 2.2.3. Display Input Connection a. Detachable Mini D-sub 15 pin male in two ends signal cable. b. A female Mini D-sub 15 pin base . Pin 9 No Connection Pin 1 Red Pin 10 Ground Pin 2 Green Pin 11 Ground Pin 3 Blue Pin 12 SDA Pin 4 No Connection Pin 13 H. Sync Pin 5 Ground Pin 14 V. Sync Pin 6 R Return Pin 15 SCL 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. 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. 2.4 RJ-11 Pin 1 Pin 2 Pin 4 Pin 3 RS232 Pin 2 Pin 3 Pin 5 Pin 1,4,6,7,8,9 Description RxD TxD GND NC 4 Service Guide 3. ELECTRICAL CHARACTERISTICS 3.1 Flat Panel 3.1.1. Type 3.1.2. Pixel structure 3.1.3. Gray scale 3.1.4. Surface treatment 3.1.5. Backlight PV500T SERIES 15" diagonal, XGA resolution, color TFT-LCD R/G/B sub-pixels in vertical stripes 1024 x 768 array matrix 16 million colors. 3H hard coating ,anti-static 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. 3.1.6 DEFECTS VISUAL INSPECTION Allowable Defects Table 1 Defects Dots Model Pixel Faults Type Type1 Type2 Type3 Type4 Type5 PV500T Series ( 0 Pixel Fault ) Bright Pixels(Note1) 0 Dark Pixels(Note2) 0 Fault Pixels / Sub-Pixels(Note3) 0 Cluster of type1 or type 2 faults (Note4) 0 Cluster of type3 faults (Note4) 0 Total Pixel Faults 0 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 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. 5 Service Guide Table 2. Supported Timing VESA Standard Mode : Display Format IBM VGA VESA Horizontal Dots 720 640 640 Vertical lines 400 480 480 Horizontal Frequency 31.469 37.861 ( ) Frequency ( Hz ) Vertical 70 59.94 72.809 Pixel Rate ( MHz ) 28.322 25.175 31.5 H. Sync. Polarity 31.778 26.413 A S ( Period ) 3.813 1.270 B S ( Pulse Width ) 1.907 4.063 C S ( Back Porch ) 25.422 20.317 D S ( Active Area ) 0.636 0.763 E S (Front Porch ) V. Sync. Polarity + O ms ( Period ) 14.268 16.683 13.735 P ms ( Pulse Width ) 0.064 0.064 0.079 Q ms ( Back Porch ) 1.112 1.048 0.739 R ms ( Active Area ) 12.711 15.253 12.678 S ms ( Front Porch ) 0.381 0.318 0.237 PV500T SERIES VESA 640 480 37.5 75 31.5 26.667 2.032 3.810 20.317 0.508 13.333 0.080 0.427 12.800 0.027 VESA 800 600 37.879 60.317 40 + 26.4 3.2 2.2 20.0 1.00 + 16.579 0.106 0.607 15.840 0.026 VESA 800 600 48.077 72.188 50 + 20.8 2.4 1.28 16.0 1.12 + 13.853 0.125 0.478 12.480 0.770 VESA 800 600 46.875 75.000 49.5 + 21.333 1.616 3.232 16.162 0.323 + 13.333 0.064 0.448 12.8 0.021 Display Format Horizontal Dots Vertical lines Horizontal Frequency ( KHz) Vertical Frequency ( Hz ) Pixel Rate ( MHz ) H. Sync. Polarity A S ( Period ) B S ( Pulse Width ) C S ( Back Porch ) D S ( Active Area ) E S (Front Porch ) V. Sync. Polarity O ms ( Period ) P ms ( Pulse Width ) Q ms ( Back Porch ) R ms ( Active Area ) S ms ( Front Porch ) VESA 1024 768 48.363 60.004 65.0 20.667 2.092 2.462 15.754 0.369 16.666 0.124 0.6 15.88 0.062 VESA 1024 768 56.746 70.069 75 17.707 1.813 1.920 13.653 0.321 14.272 0.106 0.513 13.599 0.054 VESA 1024 768 60.023 75.029 78.75 + 16.660 1.219 2.235 13.003 0.203 + 13.238 0.050 0.466 12.795 0.017 Support Mode : 1024 x 768 @ 72Hz 800 x 600 @ 70Hz 640 x 480 @ 70Hz 640 x 350 @ 70Hz 6 Service Guide PV500T SERIES Fig. 1 Timing Chart 3.3 Plug & Play VESA DDC 1/2B Standard When the PC system reset or power off to on again, the DDC 1 of monitor may be disabled to read, because the 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 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 7 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 ESC , , , See Table 3. PV500T SERIES 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 3.6.4 Hot Keys Function 3.6.4.1 Contrast ( 3.6.4.2 Brightness ( ) ) 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. Table 3 Level 1 Contrast ( icon) Brightness ( icon) Auto Tune Color Level 2 Adjustment scale Adjustment scale Adjusting 9300 6500 User Quality Size Phase Focus Dither Text / Gfx Image Pos. Red ( icon) Green ( icon) Blue ( icon) Adjustment scale Adjustment scale Adjustment scale Yes/No Available/No Effect H. Pos. V. Pos. Center H. Pos. V. Pos. Center Adjustment scale Adjustment scale Adjustment scale Level 3 Level 4 Position Adjustment scale Adjustment scale Adjusting Adjustment scale Adjustment scale Adjusting OSD Pos. Language English Germany French Spanish 8 Service Guide Italian Recall Yes/No PV500T SERIES ` 3.6.5 Accessory OSD Indications 3.6.5.1 Signal out of range An input signal which is outside the range defined in Section 3.4 shall cause the monitor to display a message Signal Out of Range. 3.6.5.2 No Signal Input When the signal cable is not plugged into PC or when the horizontal or vertical sync are absent and when the monitor is turned on, the monitor shall continuously display a message, No Signal Input, till 1 minutes. And then the monitor shall go to power saving status. 3.6.6 Volume Control (LPC15W13AA75/LPC15B13AA75 only) Roll the Volume VR counterclockwise to get louder sound. Roll the Volume VR clockwise to get quieter sound. 3.7 Power Management This monitor will meet the low power specification, Including USA governmental requirements for Energy Star, the NUTEK standard which detected the Horizontal /Vertical. sync signal from host CPU. A dual color (green/amber) LED is located on the front bezel to indicate the power management states. DPMS Power Power Picture consumption management Recovery time Sync Video Active Active 25W max (LPC15W13AA75/LPC15B13AA75) ON 23W max (LPC15W13AA74/LPC15B13AA74) No Sync Power saving 4W (Typical) 3 sec 3.8 Touch Panel Module 3.8.1 General There are four major parts for touch panel system: Sensor glass, control board, driver and the touch output cable. The sensor glass install on front side of the LCD panel module and link with control Board to detect the touching position. The touching position signal through touch output cable connect with computer's RS232 interface and enable by touch panel driver . Type: 5-Wire Resistive Activation Force: 15gr ~ 40gr Linearity: Less then 1% Insulation resistance : More than 20M at DC25V Contact bounce : Less than 10m sec (input by finger) Hitting Key Test: More then 35 million times Writing Test: More then 1 million times Total Light Transmission: >80% Supply Voltage: DC 5V Lead to lead resistance: 40 ~100 (between X-Y) 50 ~110 (between X-LX) 50 ~110 (between X-LY) 40 ~100 (between LX-LY) 9 LED Color Green Amber 3.8.2 Sensor Service Guide 3.8.3 Control Board-RS232 Power Requirement Data Rate Data Input PV500T SERIES : 5V DC, the 5V is controlled by LCD Monitor on/off switch. : 9600 Baud : RJ-11 PORT 4.Trouble Shooting 10 Service Guide PV500T SERIES 11 Service Guide TROUBLE SHOOTING R.G.B Is Not Displayed Correctly Start PV500T SERIES Is input signal OK? Y N Check video cable P2 (pin 1 2 3) Is color value corredt? Y N Adiust color value U3 (pin 7 15 22) Is main board input signal OK? Y N Check W01 connector Is U4 output signal OK? N Check U4 pin 4 ~ 25 Y Is P7 P8 R,G,B is correctly Y END 12 Service Guide 5.SYSTEM BLOCK DIAGRAM PV500T SERIES 6.Touch Panel Control Board I/O Connection 13 Service Guide 7.Inverter Board I/O Connection PV500T SERIES NOTE: MANUFACTURER'S NAME MUST BE ON THE PRINTED SIDE FOR THE INVERTER BOARD TO BE FACING UP. 14 Service Guide 8.Main B/D IC Pin Configuration PV500T SERIES 15 Service Guide PV500T SERIES 116 DATACK 117 HSOUT 115 DATACK 118 SOGOUT 126 REFOUT 125 PWRDN 127 REFIN 123 GND 122 GND 121 GN ...