![background image](http://html1.mh-extra.com/html/viewsonic/vx900-2/vx900-2_service-manual_1020039048.webp)
!
2. No Display on Screen (Screen is black, LED is off)
-
checjk
Is the screen black?
Check that C202 positive is at 5V. ( FIG 2.)
Check that the voltage level of CN100 is
approximately 12V
Check CN301 pin1
is12V, pin5 is 5V
IC100 failure
FB100, FB101
failure
F100 or power board failure
YES NO
YES NO
YES NO
Inverter failure
Check IC400
Pin 114 failures
YES
NO
!
5
4
ViewSonic Corporation
Confidential – Do Not Copy
VX900-2
Summary of Contents for VX900-2
Page 58: ...6 Mechanical Assembly 64 ViewSonic Corporation Confidential Do Not Copy VX900 2...
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Page 63: ...69 ViewSonic Corporation Confidential Do Not Copy VX900 2 7 Explode Diagram...
Page 64: ...Sechmatic Daigrams 6 ViewSonic Corporation Confidential Do Not Copy VX900 2...
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Page 70: ...PCB Layout 77 ViewSonic Corporation Confidential Do Not Copy VX900 2...
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