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Summary of Contents for ViewSonic VX2025wm-1
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Page 1: Service Manual
Service Manual ViewSonic VX2025wm-1 Model No. VS10859 20” Color TFT LCD Display (VX2025wm-1_SM Rev. 1b Sep. 2006) ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA – (800) 888-8583... - Page 2 Further, ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes.
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Page 3: Table Of Contents
Specification Front Panel Function Control Description Circuit Description Adjustment Procedure Troubleshooting Flow Chart Recommended Spare Parts List Exploded Diagram and Exploded Parts List Block Diagram 10. Schematic Diagrams 11. PCB Layout Diagrams ViewSonic Corporation VX2025wm Confidential - Do Not Copy... -
Page 4: Precautions And Safety Notices
1.0 milliamp. In the case of a measurement exceeding the 1.0 milliamp value, a rework is required to eliminate the chance of a shock hazard . AC VOLTMETER 0.15u To Metal Parts Earth Ground 1500 ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... - Page 5 Place the monitor on a clean & soft foam pad could scratch the surface of panel Do not touch the surface of the polarizer . Surface of the panel is pressed by fingers & this may cause “ MURA “ ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy...
- Page 6 ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy...
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Page 7: Specification
960, 1280 x 1024, 1680 x 1050 * The image vertical size might not be full screen. But the image vertical position should be at the center. Exclusions Not compatible with interlaced video ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 8: Power Supply
On Mode < 50 W (Max) / 49W (Typ) Power Consumption Saving Mode < 2 W, Off Mode < 1 W Recovery Time On Mode = N/A, Active Off < 3 sec ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... - Page 9 Speakers stay on when the rest of the monitor is in power saving Audio DPMS Note: There is no guarantee <1 W power consumption in Active Off mode, when the Audio Cable is connected ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy...
- Page 10 Response Time Tr =11 ms,Tf = 5ms Total =16ms(typ) 10%-90% @ Ta=25°C Without OD Board (gray –gray) (Average of Tr and Tf) = 8 ms (typ) Panel Defects Please see Panel Quality Specifications. ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy...
- Page 11 340.1 mm (13.4 inch) Depth 67.1 mm (2.6 inch) Monitor Weight (11.02 lbs) Ergonomics ≧ Tilt Up From 0º up to 20º Tilt Down From 0º down to -3º ~ -5 º ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy...
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Page 12: Front Panel Function Control Description
3. Front Panel Function Control Description ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 13: Main Menu Controls
Language allows you to choose the language used in the menus and control screens. Resolution Notice displays the recommended resolution for this LCD display. Enable allows the Resolution Notice to appear on-screen. ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... - Page 14 OSD Position allows you to move the on-screen display menus and control screens. J. Memory Recall returns adjustments to the original factory settings if the display is operating in a factory Preset Timing Mode listed in this user guide. ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy...
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Page 15: Circuit Description
1.5 Audio volume can be controlled with UP/DN key when Audio Adjust menu is active. 2. CONNECTORS 2.1 AC inlet : CEE22 typed connector 2.2 Audio : Line-in, Line-in receptacle (Line-in receptacle is green) ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... - Page 16 TMDS positive differential input, channel 0 DVI-D Logic Ground RX5- Reserved. No connection RX5+ Reserved. No connection Logic Ground RXC+ TMDS positive differential input, reference clock RXC- TMDS negative differential input, reference clock ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy...
- Page 17 Power supply Input voltage 100~240Vac Power frequency 50~60Hz Input current <1.5Arms@90Vac Inrush current 80A(Max) at 230Vac(cold start) Power consumption 47W(typical);50Watts(Max) 3.2.2 Power Management State Power Indicator 47Watts Green Standby < 2Watts Amber <2Watts ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy...
- Page 18 120 | 0A 20 20 20 20 20 00 11 ______________________________________________________________________ (08-09) ID Manufacturer Name ________________ = VSC (11-10) Product ID Code _____________________ = E51D (12-15) Last 5 Digits of Serial Number ______ = Not Used ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy...
- Page 19 1024 X 768 @ 75Hz (VESA) 1280 X 1024 @ 75Hz (VESA) (37) Manufacturer's Reserved Timing: 1152 X 870 @ 75Hz (Apple,Mac II) (38-53) Standard Timing Identification: 1680 X 1050 @75Hz 1280 X 1024 @60Hz ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy...
- Page 20 Min Vertical Freq - 50 Hz Max Vertical Freq - 75 Hz Min Horiz. Freq - 30 KHz Max Horiz. Freq - 82 KHz Pixel Clock - 210 MHz Secondary GTF - Not Supported ______________________________________________________________________ ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy...
- Page 21 (10-17) Complete Serial Number ______________ = See Descriptor Block (18) EDID Version Number _________________ = 1 (19) EDID Revision Number ________________ = 3 (20) VIDEO INPUT DEFINITION: Digital Signal Non - VESA DFP 1.x Compatible ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy...
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Page 22: Vx2025Wm
1680 X 1050 @75Hz 1280 X 1024 @60Hz 1280 X 960 @60Hz 1152 X 864 @75Hz 640 X 400 @70Hz Not Used Not Used Not Used ______________________________________________________________________ (54-71) Detailed Timing / Descriptor Block 1: ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 23: Monitor Name
Max Horiz. Freq - 82 KHz Pixel Clock - 170 MHz Secondary GTF - Not Supported ______________________________________________________________________ (108-125) Detailed Timing / Descriptor Block 4: Monitor Name: VX2025wm (126) No Extension EDID Block(s) (127) CheckSum OK ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 24: Vx2025Wm
.The analog RGB and synchronous signals are connected to NT68563 as described below: Pin Name Pin Number Red + Red - Green + Green - Blue + Blue - H sync V sync ViewSonic Corporation VX2025wm -1 Confidential - Do Not Copy... -
Page 25: Vx2025Wm
U3 as a 3.3V regulator, desired output voltage are determined by the equation Volt=1.255 x (1+ R86/R85) = 3.3 U4 as a 3.3V regulator, desired output voltage are determined by the equation Volt=1.255 x (1+ R89/R87) = 3.3 ViewSonic Corporation VX2025wm -1 Confidential - Do Not Copy... -
Page 26: Vx2025Wm
Operation Input Voltage 100~240Vac, 50~60Hz Input Current <1.5A@90Vac Inrush Current <80A @ 230Vac(Cold start) OUTPUT Output Voltage Regulation +/-5% Output Ripple and Noise 300 mVp-p Rated Output Current <4.16A Turn-on Delay <3 seconds ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 27: Adjustment Procedure
1152 x 870 @ 75Hz, 68.7kHz 1280 x 1024 @ 60Hz, 63.4kHz 1280 x 1024 @ 75Hz, 79.97kHz 1280 x 720 @ 60Hz, 45kHz 1680 x 1050 @ 60Hz, 65.3kHz 1680 x 1050 @ 75Hz, 82.3kHz ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 28: Vx2025Wm
Full black Full black Pattern 7 5-cycle pattern 5-cycle pattern Check the BU Pattern 8 1-dot pattern 1-dot pattern Check the flicker Pattern 9 Pattern 1 Pattern2 Pattern 3 Pattern4 ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 29: Vx2025Wm
Pattern 5 Pattern6 Pattern 7 Pattern 8 Pattern 9 ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 30: Vx2025Wm
. 1. Equipment needed : - VX2025wm - PC ( Personal computer ) - LPT cable (TWO FEMALE) - Fixture (ISP) - Firmware upgrade program 2. Connection : To Monitor To PC ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 31: Vx2025Wm
PC or notebook, parallel(printer) cable, ISP tooling. Software: If OS was Win2000 or WinXP , please install “PORT95NT.exe” In order to ensure can execute ISP program, please set BIOS in PC or Notebook as Fig 0.0 Fig 0.0 ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 32: Vx2025Wm
1.1 User could download ISP software - EasyWirter 1.2 double click the file of EasyWriterV2.10p2.exe to install. Fig 1.0 1.3 Press “ Next “ button to continue , see Fig 1.1 Fig 1.1 ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 33: Vx2025Wm
1.4 Keep default setting or press “ Change “ button for selecting the path that you want , and then press “Next “ button to continue , see Fig 1.2 Fig 1.2 1.5 Press “ Install “ button to continue , see Fig 1.3 Fig 1.3 ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 34: Vx2025Wm
1.6 Press “ Next “ button to continue , see Fig 1.4 Fig. 1.4 1.7 Installation has finished , press “ Finish “ button , see Fig 1.5 Fig. 1.5 ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 35: Vx2025Wm
Appendix B : Use ISP to program MCU 2.1 press “ Load Hex “ button to load the hex file , see fig2.1 Fig.2.1 2.2 Select item 4“4.NT68F633(64k) IC , see fig2.2 Fig.2.2 ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 36: Vx2025Wm
2.4 Check the status is “Auto Process Finished” and show 100% in the bar, see fig2.4 Fig. 2.4 2.4 If show “ Can’ t enter ISP mode!” message, please re-check all ISP connection is ready, see fig2.5 Fig. 2.5 ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 37: Vx2025Wm
ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 38: Vx2025Wm
AL FOIL(16) pull out CCFT CABLE(7) unlock button/b screw(8) unlock bezel screw(17) ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 39: Vx2025Wm
L/R screw(18) ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 40: Vx2025Wm
(4) put lcd in carton ª`·NPANEL-±´Â ¬ü¯¾½¦±a ¦V (2) cover PE BAG (5) put cable&base&manual&assemble handle BASE MANUAL POWER CABLE&DVI CABLE&AUD HANDLE CABLE (3) assemble END CAP R/L (6) accessories check&cover carton ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 41: Troubleshooting Flow Chart
Check CN6 pin 1,2 Change power 12V correct? board Check U4,U3 pin2 Change U3,U4 3.3V correct? Check U5 pin 2 Change U5 1.8V correct? Check Y1 Change Y1 frequency 12MHz Change M/B ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 42: Vx2025Wm
Check CN7 to Change speaker speaker OK? Change power Check CN6 pin 1,2 board module 12V correct? Check U6 pin 6 Change Q7 Volume and Q7 Check U6 Change U6 pin12(mute),p11(stby) Change M/B ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 43: Vx2025Wm
Display color abnormal Display color abnormal Check panel cable? Change panel cable Check open/short Repair open/short of IC2? Check panel power Change Q4 supply of heck panel Change panel Change M/B ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 44: Recommended Spare Parts List
Remark 2: All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic Corporation. This is to eliminate repeated cross checks of each item between this version and prior versions. -
Page 45: Vx2025Wm
BOM LIST (VX2025wm-1) ViewSonic Model Number: VS10859 Rev: 1b Serial No. Prefix: Q6Y Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 1LW0VXXVS47 W0VX LCD MONITOR(TWN) GP 1LW0VXXVS21 W0VX LCD MONITOR(EU) GP 1LW0VXXVS04 W0VX LCD MONITOR(USA) GP 1LW0VXXVS39 W0VX LCD MONITOR(CHN) GP... -
Page 46: Vx2025Wm
Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty HAW0VX01017 PE BAG-CHINA W0VX(HAW0VX01,REV3A) GP DC-00005215 HDW0VA01011 VSCN WARRANTY CARD W0VA(HDW0VA01,R3A) GP DC-00004814 HCL7V022011 CARTON STICKER L7VC(HCL7V022,REV3A)GP M-00003446 HCL7V023018 WARRANTY STICKER L7VC(HCL7V023,R3A)GP DC-00003443 HCL7V024014 ADDRESS LABEL L7VC(HCL7V024,REV3B) A-PC-0106-0306 DM333181S01 POWER 3P 1.8M(CHN)Y546B300012180QD GP... -
Page 47: Exploded Diagram And Exploded Parts List
8. Exploded Diagram and Exploded Parts List ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 48: Vx2025Wm
EXPLODED PARTS LIST (VX2025wm-1) ViewSonic Model Number: VS10859 Rev: 1b Serial No. Prefix: Q6Y Item ViewSonic P/N Ref. P/N Description Q'ty M-MS-0808-9243 FEL7V003019 LOGO FRONT-VSC-38MM L7VC(REV3A)GP M-MS-0808-9402 FEL7V007014 BIRD LOGO L7VD(FEL7V007,REW3A)GP EAW0VX01017 LCD MARK WOVX(EAW0VX01,REV3A)GP EAW0VX02013 LCD BEZEL W0VX(EAW0VX02,REV3A) GP... -
Page 49: Vx2025Wm
ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 50: Vx2025Wm
PACKING PARTS LIST (VX2025wm-1) ViewSonic Model Number: VS10859 Rev: 1a Serial No. Prefix: Q6Y Item ViewSonic P/N Ref. P/N Description Q'ty A-PC-0106-0224 DM333181G97 POWER CORD 3P 1.8M M-00004158 JXW0ZB01019 LCD FILM W0ZB-A1 #N/A HAL0V002014 EPE BAG L9VD P-00005218 HBW0VX01018 END CAP(L) W0VX... -
Page 51: Block Diagram
9. Block Diagram ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 52: Schematic Diagrams
1000pF/6/NC ADC_VAA 2.2K/6/NC GGND BGND GND_A GND_A GND_A 0.1uF/6 100/6/NC SYNC.RETURN 74LVC14 GND_A R107 GND_A VSIN R108 ZD5V6 22pF/6/NC 2.2K/6/NC HSIN GND_A GND_A GND_A ViewSonic Corporation Model ADC INPUT Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VX2025wm-1... -
Page 53: Vx2025Wm
10/6 TXC+ RXC+ 10/6 RXC- TXC- SHELL2 GND_A GND_A BAV99/NC BAV99/NC BAV99/NC BAV99/NC DVI Input GND_A ADC_VAA GND_A ADC_VAA GND_A ADC_VAA GND_A ADC_VAA ViewSonic Corporation BAV99 Model DVI INPUT Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VX2025wm-1... -
Page 54: Vx2025Wm
RSTn IRQn IRQn IRQn REFCLKI REFCLKI OSCI OSCO GND_A BYPASS-VS BYPASS-VS IN_VSO/GPO4 GPO1 BYPASS-HS BYPASS-HS IN_HSO/GPO5 REFCKO/GPO6 GPO7 AD0/GPO2 GPO8 AD1/GPO3 GPO9/PWM1 GPO10/PWM0 GND_A GND_A ViewSonic Corporation Model NT68563 Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VX2025wm-1... -
Page 55: Vx2025Wm
LEDA LEDA 330/6 330/6 LEDG LEDG1 4.7K/6 CON11P-2.0S MMST3906 GND_A LEDG GND_A MUTE- LEFT- RIGHT- DOWN- PWR- SEL- MENU- ViewSonic Corporation GND_A GND_A GND_A GND_A GND_A GND_A GND_A GND_A Model MCU(I/O_Key) MCU-VDD MCU-VDD MCU-VDD MCU-VDD MCU-VDD MCU-VDD MCU-VDD MCU-VDD Title... -
Page 56: Vx2025Wm
Max 2.0A +18V BEAD 120/1206 +12V BEAD 120/1206/NC BEAD 120/1206/NC LCD-VDD SI9435 4.7K/6 BEAD 120/1206 2.2K/6 GND_A GND_A GND_A 4.7K/6 LCD-ON ViewSonic Corporation MMBT3904 2005.06.13 modify Model PANEL OUTPUT Title GND_A Date Rev: Confidential - Do Not Copy ViewSonic Corporation VX2025wm-1... -
Page 57: Vx2025Wm
ADJ/GND BAT54C-GS08 LT1117/TO223 SSM12LL VOUT BEAD 120/0805 U4-A1 ADJ/GND MCU-VDD RB081L-20 RB081L-20 330/6 1% VOUT AIC1084/TO252 BEAD 120/0805 ViewSonic Corporation ADJ/GND BEAD 120/0805 150/6 1% AIC1084/TO252/NC Model Scaler Power 200/6 1% GND_A 100uF/25V 100uF/25V Title 330/6 1% Date Rev: GND_A... -
Page 58: Vx2025Wm
330uF/16V BEAD 120/1206 MUTE MUTE TDA7496L DTC144EUA AGND L26 BEAD/1206 AGND AGND AGND GND_A R104 10K/6 R105 10K/6 BEAD/1206 STANDBY STANDBY AGND GND_A DTC144EUA ViewSonic Corporation AGND Model AUDIO Title Date Rev: Confidential - Do Not Copy ViewSonic Corporation VX2025wm-1... -
Page 59: Pcb Layout Diagrams
11. PCB Layout Diagrams 11.1 ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 60: Vx2025Wm
11.2 ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 61: Vx2025Wm
11.3 ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy... -
Page 62: Vx2025Wm
Company: Add: Tel: Fax: E-mail: After completing this form, please return it to ViewSonic Quality Assurance in the USA at facsimile 1-909-839-7943. You may also e-mail any suggestions to the Director, Quality Systems & Processes (marc.maupin@viewsonic.com) ViewSonic Corporation VX2025wm-1 Confidential - Do Not Copy...
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