ViewSonic VX800-3 - 18" LCD Monitor Support and Manuals
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Service Manual - Page 3
...or other parts. zSave these instructions. zFollow ...openings in the user manual for later use this...with objects or install the display in installation unless proper ...installed on the display will become distorted and the color irregular.
zRead all of these instructions for this product near or over a radiator or heat register. The openings should not be hindered.
ViewSonic...
Service Manual - Page 4
... ...19 Appendix III Label Printing ...20 ID LABEL ...20 Bar Code label/Serial No Label 20
2.Front Panel Function Control Description 21
2.1 User control functions ...22 2.2 OSD operation flow ...22
3.Circuit Description 31
3.1. Do Not Copy
VX800-3 Confidential - Interface Board ...32 3.2 Audio Board...36
4.Troubleshooting Flow Chart 38
4.1 Figure of Waveform...38 4.2 No Display...
Service Manual - Page 6
... 82 kHz
(automatically)
Vertical
50 Hz to model VX800-3 18 inch color LCD monitor.
MVA (premium)
Size
18.0 inches diagonal...Specifications.
1.1 Scope
The following specifications are applicable to 75 Hz
(automatically)
Non-interlaced
Max Pixel Rated
135Mhz
Resolution
Horizontal 1280 dots
Vertical
1024 lines
ViewSonic Corporation
2! General Description (Quick Reference)
LCD...
Service Manual - Page 15
... 50,000 hours minimum; 60,000 hours typical
ViewSonic Corporation
21! Confidential - Tf = 10ms
Maximum Tr = 20ms; Do Not Copy
VX800-3 Tf = 15ms
6 - LCD Panel
Mechanical Active Area (mm) Pixel pitch (mm) Mass typical (g) Panel dimensions (WxDxH) mm Resolution Surface Treatment with Haze value Panel Model number Panel Interfaces
357.12 x 285.696 0.279...
Service Manual - Page 27
... eliminate waviness and distortion. NOTE: Auto Image Adjust works with most common video card.
ViewSonic Corporation
33! Details on your LCD Display, Lower the video refresh rate to 60 Hz and try again. (See computer or graphic card user guide to save after user totally exit OSD menu.
1 Press the [1] button to display...
Service Manual - Page 35
... [Mode, Model Number, Serial Number], Manual Image Adjust [H. Memory Recall is to recall the following functions to factory settings (only if the LCD display is turned off by the user or when it times out.
Do Not Copy
VX800-3 Size*, H. There shall not be a separate save new settings when it is operating in Digital Mode.
ViewSonic Corporation...
Service Manual - Page 39
...
Do Not Copy
VX800-3 This information may ...while gm5120 is not intended to replace the system microprocessor.
In 4-bit ...and five low-voltage differential-signaling (LVDS) line drivers in the input format. Confidential -
It is ...The gm5120 OSD controller supports both character-mapped and...implementation by a compatible receiver,
ViewSonic Corporation
45! The gm5120 incorporates...
Service Manual - Page 40
...level. The frequency of the shutdown/clear (SHTDN) active-low input to LVDS output drivers. Do Not Copy
VX800-3
A low-level signal on SHTDN clears all internal registers to the user. The ...) and then used to unload the data registers in 7-bit slices and serially. Confidential - ViewSonic Corporation
46! The rising or falling edge of the clock can be selected by way of the...
Service Manual - Page 41
...processor left channel input Gain output and input selector for left channel
ViewSonic Corporation
47! Confidential - VDD
- Pin6 SCL is clock input...
Loud_L I
Lin 3
I
Lin 2
I
Lin 1
I
LIN
I /O
REF
- Do Not Copy
VX800-3 The DDC2B node (BI-directional mode) BUS consists of two wires. SCL is for the data transmission ...performance and reliability with the least external components.
Service Manual - Page 43
H-SYNC
ViewSonic Corporation
49! Confidential - Troubleshooting Flow Chart
4.1 Figure of Waveform
FIG 1.
12V
FIG 2.
5V
FIG 3.
3.3V
FIG 4.
2.5V
FIG 5. 32 GRAY SIGNAL INPUT FIG 6. Do Not Copy
VX800-3
4.
Service Manual - Page 52
... again
ViewSonic Corporation
58
Confidential - VX800-3 Color Temp
Factory 01/10 / 2003
Factory Default Brightness Blacklevel AutoColor Initial EDID CopyColorTemp Gamma
Otherwise, follow the procedure described in the OSD menu screen. Do Not Copy
VX800-3 5.1 Preparation of Manual Alignment
1.1 The alignment procedure is performed after unit has been completely assembled and before set...
Service Manual - Page 53
... " or "down " to move cursor to 9300 color
ViewSonic Corporation
59! Use "2" key to the selected item.
5.2 Color Temperature Alignment
Before manually adjusting color temperature, set OSD contrast 80%, brightness 100% (factory default), enter into factory mode and select "color temp. B value corresponding to switch r, g, b, driver.
Confidential - It will exit factory mode and enter...
Service Manual - Page 54
...press "2" key to select 6500 color temperature adjustment.
2.2.2 Use "2" to move cursor to r-driver or g-driver or b-driver and then press "up " or "down " key to adjust it to meet
ViewSonic Corporation
5:!
Confidential - The above result R, G, B gain will automatically be saved, when... color temperature adjustment and do another color temperature adjustment. Do Not Copy
VX800-3
Service Manual - Page 55
... cursor to r-driver or g-driver or b-driver and then press "up " or "down " key to adjust it to meet following chromaticity spec. 5400 ̓ k Шx = 0.332 ̈́ 0.003 , y = 0.348 ̈́ 0.003 y>= 180cd/m2.
2.3.3 Press "1" to exit 5400 color temperature adjustment and do another color temperaute adjustment. ViewSonic Corporation
61! Confidential - Do Not Copy
VX800-3 The...
Service Manual - Page 85
...909-444-8654. Unit
Excellent Good
Fair
Bad
Engineering Specifications Panel Control Description Circuit Description Troubleshooting Flow Chart Adjust Procedure
Mechanical Assembly Schematic Diagrams PCB Layout Parts Lists
B. Assessment
A. Are you have any suggestions to ViewSonic
corporation. Do you satisfied with the VX800-3 service manual?
We would appreciate your completion of...
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