ViewSonic VP2000S Manual de Serviço

Model No. 20" Color TFT LCD DisplayService ManualViewSonic VP2000sViewSonic381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583(

E. Image test1. Picture size & position. 1.1 Picture size. Input analog timing modes 1 ~ 26 and DVI timing modes 1 ~ 25:H-size: 408mm ± 1mm. V-si

[UP] + [DOWN] arrows. Recall either Contrast or Brightness settings while the Contrast orBrightness adjustment OSD is active, or recall both Contrast

7. USB test (VP201s/b only)7.1 Use a USB test hub such as "UPT2 USB2.0 8-port tester" to test USB up stream and down streamtransfers. Each p

F. Analog and Digital timing chart. Mode No. 1 2 3 4 5 6 7 8 9 10 Mode Name TEXT 640 x 350 VGA640 x400 VESA640 x480 VESA640 x480 MAC640 x480 VESA640

Mode No. 21 22 23 24 25 26 27 28 29 30 Mode Name APPLE 1152x 870 VESA1280 x960 VESA1280 x960 VESA1280 x1024VESA1280 x1024VESA1280 x 1024HDTV 1280 x 7

Appendix B: DDC contents. a. 128 bytes of EDID code for VP2000s analog. 0 1 2 3 4 5 6 7 8 9 0 00 FF FF FF FF FF FF 00 5A 6310 1A 23 01 01 01 01

Adjusting the Screen ImageUse the buttons on the front control panel to display and adjust the OnView® controls which display on the screen. The OnVie

Do the following to adjust the screen image:1To display the Main Menu, press button [1]. NOTE: All OnView menus and adjustment screens disappear autom

Main Menu ControlsAdjust the menu items shown below by using the up ▲ and down ▼ buttons. Control ExplanationAuto Image Adjust automatically sizes,

Important: If you select RECALL from the Main Menu when the product is set to a Preset Timing Mode, colors return to the 6500K factory preset.Control

CopyrightCopyright¤ 2005 by ViewSonic Corporation. All rights reserved. No part of this publication may bereproduced, transmitted, transcribed, stor

Setup Menu displays the menu shown below.The Setup Menu controls are explained below:Language allows the user to choose the language used in the menus

Memory Recall returns adjustments to the original factory settings if the display is operating in a factory Preset Timing Mode listed in this user gui

4.1 Power supply (DC/DC Converter): 4.1.1 IC251 BA9741 is a switching regulator controller that uses a PWM method. It is used for DC to DC step-down

5.1 General. 1. All specifications must be met over line voltage range of 90VAC to 264VAC 50Hz / 60Hz, unless otherwise specified. 2. Operating

5.2 Instrument alignment. 5.2.1 Adjustment procedure. InputD-SUBInput640x480 / 60HzCross-hatchEnter Burn-in modeby pushing "Down + 2 + DC power&

5.2.2 Video alignment. 5.2.2.1 Initial Conditions 5.2.2.1.1 Set the contrast to 70% and set brightness to 100%.5.2.2.1.2 Input a 640x480 / 60Hz 5-bloc

5.3 VP2000s Firmware Download Procedure (Gm1601 serial) 5.3.1 Set LCD Monitor to Burn In mode (Down key + 2 key +DC power on). 5.3.2 Set LCD Monitor

5.3.6 Click Gprobe 4 24ViewSonic Corporation Confidential - Do Not Copy VP2000s

25ViewSonic Corporation Confidential - Do Not Copy VP2000s

5.3.7 Connect ISP Tool 26ViewSonic Corporation Confidential - Do Not Copy VP2000s

TABLE OF CONTENTS 2. Specification3. Front Panel Function Control Description4. Circuit Description6. Troubleshooting Flow Chart9. Block Diagram10. S

5.3.7.1 ISP Tools 5.3.7.2 Connect ISP Tool to “COM1” Connect to COM 1 Connect to D-Sub Output 12V COM port 27ViewSonic Corporation Confid

5.3.7.3 Connect ISP Tool to “Display” Connect to COM 1 D-Sub 28ViewSonic Corporation Confidential - Do Not Copy VP2000s

Connect to D-Sub Signal cable 29ViewSonic Corporation Confidential - Do Not Copy VP2000s

5.3.8 Confirm connection setup Gprobe setting 30ViewSonic Corporation Confidential - Do Not Copy VP2000s

5.3.8.1 Open BATCH file in Gprobe 4 Set to “SERIAL1"Set to "COM1" Set to “115200” 31ViewSonic Corporation Confidential - Do Not

32ViewSonic Corporation Confidential - Do Not Copy VP2000s

5.3.9 Open VP2000BATCH 33ViewSonic Corporation Confidential - Do Not Copy VP2000s

5.3.10 Key in "BATCH VP2000BATCH.TXT" 34ViewSonic Corporation Confidential - Do Not Copy VP2000s

5.3.11 Press Enter key 35ViewSonic Corporation Confidential - Do Not Copy VP2000s

5.3.12 Remove ISP tool 5.3.13 EEPROM initial (1key + up key + down key + AC Power off/on)5.3.14 Execute Auto White Balance.5.3.14.1 Set LCD Monitor

1. Appropriate Operation (1) Turn off the product before cleaning. (2) Use only a dry soft cloth when cleaning the LCD panel surface. (3) Use a so

5.3.14.2 Set LCD Monitor to Factory mode (1 key + +DC power on). 5.3.14.3 Enter Factory Mode (press up key).5.3.14.4 Recover color temperature set

6.1 No power. Verify that CN251 pin1 is at approximately 24VVerify that C281 is at 24VFailure point1. Adaptor failure.2. Disconnection has occurred

6.2 No display on screen (Screen is black, LED is off). AC power on and DC power onCheck that C265 positive is at 18V Is LED illuminated?Follow ite

6.3 "No signal" message appears on screen. Verify that signal level of selected input Add word "No" below this box.Failure point1.

Rev: 1bItem ECR/ECN ViewSonic P/N Ref. P/N Universal number# Q'ty4 PWB ASSY I/F BD L20DBR 05FAB Added: 03/01/05 B-00001844 5600110395 15 CABINET

Item ECR/ECN ViewSonic P/N Ref. P/N Universal number# Q'tyDescription65 PALLET FUMIGATE 1120*690*120 Added: 03/01/05 M-MS-0808-3374 3524009701 0.

Rev: 1bItem ViewSonic P/N Ref. P/N Description LocationUniversalnumber#Q'ty1 E-L-0407-1587 2921021404 CORE BEAD 40*6.5*10 W5H+TAPE 12E-L-0407-158

Item ViewSonic P/N Ref. P/N Description LocationUniversalnumber#Q'ty73M-SCW-0824-07793109017700SCREW T M3*2.7*7.5 FF C S18C ZN YEL274M-SCW-0824-0

Item ViewSonic P/N Ref. P/N Description LocationUniversalnumber#Q'ty149M-MS-0808-86283460149900BRACKET IF&POWER SECC 95*39.2 T.81150M-BK-0805

Item ViewSonic P/N Ref. P/N Description LocationUniversalnumber#Q'ty224#N/A242017400206FET 600V 10A 0.75ohm SC-67Q1011225#N/A2500004210IC VOL ADJ

(11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist orbend the TFT Module even momentarily. W

Item ViewSonic P/N Ref. P/N Description Location Universalnumber#Q'ty291 E-D-0403-2131 203812570431 DIO ZEN 0.5W 7.78-8.19V MINIMELF D20 1292 E-D

Item ViewSonic P/N Ref. P/N Description LocationUniversalnumber#Q'ty338E-R-0405-70430343392300RES CH 1/10W 3.9K J 0603R2541339 E-R-0405-6690 0343

Item ViewSonic P/N Ref. P/N Description LocationUniversalnumber#Q'ty367 E-C-0405-4321 15A7691100 CAP MC CP 10V 10U Z Y5V 0805C440,C611,C612,C613,

Item ViewSonic P/N Ref. P/N Description Location Universalnumber#Q'ty423 #N/A 3075353143 CONN D-SUB FEMALE 15P P2.29 BLUE 0424 PL-00000474 307541

8. Exploded Diagram and Spare Parts List 51ViewSonic Corporation Confidential - Do Not Copy VP2000s

Rev: 1cItem ViewSonic P/N Ref. P/N Description Q'ty1 C-FP-0301-1024 3361092601 F/B ABS SILVER VP2000S S0LFA1AT 12 M-MS-0808-8556 3200649100 NAME

9. Block Diagram 53ViewSonic Corporation Confidential - Do Not Copy VP2000sENABLE

10. Schematic Diagrams 54ViewSonic Corporation Confidential - Do Not Copy VP2000sPower Board

55ViewSonic Corporation Confidential - Do Not Copy VP2000sMain Board

56ViewSonic Corporation Confidential - Do Not Copy VP2000sMain Board

A. General specification: LCD panel suppliers: LG: LM201U04-A3. AUO: M201UN02 V.3 a. Panel size: 20.1-inch (viewable). b. Driver element: a - Si

57ViewSonic Corporation Confidential - Do Not Copy VP2000sMain / Key Board

58ViewSonic Corporation Confidential - Do Not Copy VP2000sPower Board

59ViewSonic Corporation Confidential - Do Not Copy VP2000sInverter Board

11. PCB Layout Diagrams 60ViewSonic Corporation Confidential - Do Not Copy VP2000sMain Board

61ViewSonic Corporation Confidential - Do Not Copy VP2000sMain Board (Bottom)

62ViewSonic Corporation Confidential - Do Not Copy VP2000sPower Board

63ViewSonic Corporation Confidential - Do Not Copy VP2000sPower Board (Bottom)

64ViewSonic Corporation Confidential - Do Not Copy VP2000sInverter Board

65ViewSonic Corporation Confidential - Do Not Copy VP2000sInverter Board (Bottom)

*Readers Response*Dear Readers:Thank you in advance for your feedback on our Service Manual, which allows continuous improvementof our products. We w

B. Physical specification:a. Height: 480.55mm. b. Width: 448.00mm. Overall dimension: c. Depth: 266.65mm. a. Net weight: 8.5kg. Weight: b. Gross w

C. OSD Menu Functions1. Interface board function test. 1.1 Function keys: Power, 1, ▲, ▼, 2.1.2 Basic function check. 1.2.1 Input 1600x1200 / 60Hz,

1.1 Set contrast to 70% and brightness to 100%. 1.2 Input a 640x480 / 60Hz, 5-block (5-MOSAIC) pattern (input level 100IRE 0.7Vp-p), then activate the