Page 2 - Revision History; Revision SM Editing Date
2 Copyright Copyright © 2008 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, opti...
Page 3 - TABLE OF CONTENTS
3 TABLE OF CONTENTS 1. Precautions and Safety Notices ......................................................................................... 4 2. Specification ....................................................................................................................... 7 3. Front Panel ...
Page 4 - Precautions and Safety Notices; Safety Precautions
4 1. Precautions and Safety Notices 1. Precautions and Safety Notices 1.1 Safety Precautions This monitor is manufactured and tested on a ground principle that a user’s safety comes first. However, improper use or installation may cause damage to the monitor as well as the user. Carefully go over th...
Page 5 - Handing and Placing Methods; Incorrect Methods:; Only touch the metal frame of the LCD panel or the
5 1.4 Handing and Placing Methods Correct Methods: Incorrect Methods: Only touch the metal frame of the LCD panel or the front cover of the monitor. Do not touch the surface of the polarizer. Surface of the LCD panel is pressed by fingers and that may cause “Mura.” Take out the monitor Taking out th...
Page 8 - Front Panel Function Control Description
8 3. Front Panel Function Control Description Use the buttons on the front control panel to display and adjust the OSD controls which display on the screen. The OSD controls are explained at the top of the next page and are defined in “Main Menu Controls”.
Page 9 - Do the following to adjust the display setting:; The following tips may help you optimize your display:
9 Do the following to adjust the display setting: 1. To display the Main Menu, press button [1]. NOTE: All OSD menus and adjustment screens disappear automatically after about 15 seconds. This is adjustable through the OSD timeout setting in the setup menu. 2. To select a control to adjust, press or...
Page 10 - Main Menu Controls
10 Main Menu Controls Adjust the menu items shown below by using the up and down buttons. Control Explanation Auto Image Adjust automatically sizes, centers, and fine tunes the video signal to eliminate waviness and distortion. Press the [2] button to obtain a sharper image. NOTE: Auto Image Adjust ...
Page 13 - Circuit Description; The NT68667 operates at frequencies up to
13 4. Circuit Description 4.1 Main Board U401 NT68667UFG/C The NT68667 is a highly integrated flat panel display controller that interfaces analog, digital, and video inputs. It combines a triple ADC, a DVI compliant TMDS receiver, a digital YUV receiver, a high quality zoom and shrink engine , a mu...
Page 14 - Pin Assignment
Page 20 - Typical Application
20 4.2 Power Board IC901 LD7576 The LD7576X series bring high performance, combines with highly integrated functions, protections and EMI-improve solution. It’s an ideal solution for those cost-sensitive system, reducing component count and overall system cost. The LD7576X series features near-lossl...
Page 22 - Pin Diagram
22 IC801 TA9687GN TA 9687 is a high performance, cost-effective CCFL (Cold Cathode Fluorescent Lamp) controller designed for driving large-size Liquid Crystal Display (LCD) applications requiring 2 to 6 CCFLs. The controller converts unregulated DC voltages into a nearly sinusoidal lamp voltage and ...
Page 24 - Adjustment Procedure
24 5. Adjustment Procedure 5.1 White balance, Luminance adjustment Approximately 2 Hours should be allowed for warm up before proceeding White-Balance adjustment. Before started adjust white balance, please setting the Chroma-C7120 MEM. Channel 0 to9300 0 K colors, MEM. Channel 1 to 7500 0 K colors,...
Page 25 - ISP Board
25 e. Adjust sRGB (sRGB) color-temperature 1. Switch the Chroma-C7120 to RGB-mode (with press “MODE” button) 2. Switch the MEM.channel to Channel 4 (with up or down arrow on Chroma-C7120) 3.The LCD-indicator on Minolta-CA210 will show x = 313 ±12, y = 329 ±12, Y = 80 ±15 cd/m 2 10. press “1” key to ...
Page 26 - Hardware Connect status; You should jump the pin to “For Flash” at ISP Board
26 Hardware Connect status 5.2.2 Update the NOVATEK’S firmware You should jump the pin to “For Flash” at ISP Board LPT Cable VGA Cable Connect to the PC LPT Connect to the VSC VA2427wm
Page 27 - Double click “Writer.exe”
27 Double click “Writer.exe” This tool can auto detect the right SCALAR programe speed,the process as follow:
Page 28 - “Programing Success”.This means the update is successful.
28 When auto detect is finished,click “Load Hex”,then chosse the firmware that you want to update Click “Auto”,then the update will begin.Wait for a moment until the bar is 100%,the program windows will show “Programing Success”.This means the update is successful.
Page 29 - DDC Key in Procedure
29 5.3 DDC Key in Procedure Note: 1. Every time after replacing the main board, you have to do the DDC key in. 2. If you find the DDC does not conform to the LCD TV, you have to do the DDC key in. 5.3.1 Equipment Needed - VG2427wm - PC (Personal computer) - LPT cable - 12V DC - Firmware upgrade prog...
Page 30 - For analog; appear as follow Figs
30 For analog a. Double-click , appear as follow Figs : b. Click . c. Key in the Serial Number printed on the barcode label, then click “OK”
Page 33 - Block Diagram
33 7. Block Diagram 7.1 Main Board Scalar IC NT68667 (Include MCU, ADC, OSD) (U401) D-Sub Connector (CN101) EEPROM PM25LV020-100SCE (U402) DVI_SCLDVI_SDA LCD Interface (CN302) Key Control interface (CN404) Crystal 12MHz (X401) DVI Connector (CN102) EEPROM M24C02 (U108) EEPROM M24C02 (U102) DVI_SCL D...
Page 35 - Schematic Diagrams
35 8. Schematic Diagrams 8.1 Main Board 1 6 2 7 3 8 4 9 5 11 12 13 14 15 10 17 16 CN101 DB15 R120 1K 1/16W 5% R 102: 100 Ohm ->0 Ohm I/ O1 1 GND 2 I/ O2 3 I /O3 4 VDD 5 I /O4 6 U105 AZC199-04S DSUB_5V ESD_5V ESD_5V ESD_5V DVI_5V 5VCC R142 0 OHM +-5% 1/16W ESD_5V 1K CHANGE TO 0RLG20081029 ADD D101...
Page 37 - lock type
37 C703 NC/0.1UF 16V OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME 称 爹 T P V ( Top Victory Electronic s Co . , Ltd. ) Key Component 絬 隔 瓜 絪 腹 <Doc> 1 . B 4 6 Tuesday , March 17, 2009 < 称爹 > 4. POWER G3226-1-X-X-6-090317 VSC VG2427 C711 NC/0.1UF 16V TO252 AD J 1 Vout 2 Vin 3 U702 NC...
Page 42 - LED; UP; SW; DOWN; CABLE
42 8.3 Key Board R001 3K 1/10W 1% 3 4 1 2 LED001 LED C002 0.1uF 16V UP KEY2 POWER KEY1 BLUE Y ELLOW GND Y ELLOW BLUE C001 0.1uF 16V 1 3 5 2 4 6 8 7 9 10 S W 01 SW UP DOWN DOWN 1 2 3 4 5 6 CN001 CABLE GND R002 3K 1/10W 1% D1 01 UD ZS NP 5. 6B KEY 2 KEY 1 R003 2K OHM 1% 1/10W R004 2K OHM 1% 1/10W OEM ...
Page 43 - Near by USB 2504 Hub side
43 8.3 USB Board C710 0.1uF/16V GND_U DM3 GND_U DP3 C711 0.1uF/16V DM4 C712 0.1uF/16V DP4 C706 10nF16V GND_U C707 0.1uF/16V GND_U DM4 DP3 R732 NC/0R05 1/16W 1 2 ZD707 N C /EGA10603V05A1-B GND_U /OCS4 1 2 ZD709 N C /EGA10603V05A1-B GND_U R729 NC/15K 1/16W 5% DM3 1 4 2 3 L705 NC R734 NC/10K 1/16W 5% 1...
Page 44 - PCB Layout Diagrams
Page 50 - Exploded Diagram and Exploded Parts List
50 10. Exploded Diagram and Exploded Parts List 10.1 EPL
Page 53 - Recommended Spare Parts List; TDRMNDDKWBVSPC
53 11. Recommended Spare Parts List TDRMNDDKWBVSPC Location Part Number Description Remark 019G6014 1 TIE FOR STRAP 023G3178709 3A LOGO 041G 68508 A CONTROL CARD 050G 600 1 W WHITE STRAP 050G 600 2 HANDLE1 050G 600 3 HANDLE2 052G 1185 24 VSC TAPE 052G 1186 SMALL TAPE 052G 1211 A CONDUCTIVE TAPE 55MM...