ViewSonic VX800-3, Service Manual

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Content
1.Engineering Specifications . ....................................................................... 1
1.1 Scope .......................................................................................................................................1
1.2 Electrical Characteristics ......................................................................................................3
1.3 Mechanical Characteristics ................................................................................................12
1.4 Packaging .............................................................................................................................13
1.5 Environmental Characteristics ...........................................................................................13
1.6 Factory setting ......................................................................................................................13
Appendix IPreset Signal Timings .....................................................................................14
Analog timing mode table.......................................................................................15
Digital timing mode table ........................................................................................1
7
Appendix II .......................................................................................................................................
EDID Code............................................................................................................................19
Analog ....................................................................................................................
19
Digital .....................................................................................................................
19
Appendix III Label Printing .....................................................................................................20
ID LABEL ...............................................................................................................2
0
Bar Code label/Serial No Label ..............................................................................2
0
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. Interface Board ...................................................................................................................32
3.2 Audio Board ..........................................................................................................................36
4.Troubleshooting Flow Chart ..................................................................... 38
4.1 Figure of Waveform .............................................................................................................38
4.2 No Display on Screen (Screen is black, LED is off) .......................................................41
4.3 No Display on Screen ( LED is green) .............................................................................42
4.4 No Power On ........................................................................................................................43
4.5 No Sound (Test signal: 1r.m.s sine waveform ) ..............................................................44
4.6 Show “No Signal” on screen ..............................................................................................45
4.7 Keypad can not work ...........................................................................................................45
5.Adjust Procedure ....................................................................................... 46
5.1 PREPARATION OF MANUAL ALIGNMENT ...................................................................47
5.2 COLOR TEMPERATURE ALIGNMENT ..........................................................................48
5.3 FACTORY PRESET SETTING ..........................................................................................50
6.Mechanical Assembly ................................................................................ 51
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VX 8 00-3