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6.3
Show "No signal" on screen.
Check the R.G.B and H/V
Sync in IC606, IC607
IC606, IC607 Failure
6.4
Keypad cannot work.
Yes
Failure point
Q401. Q402. Q403, Q404 failure
ViewSonic Corporation
Check that signal level of D-sub, DVI-A or DVI-D
Yes
Check the the cable is fully conneted between the interface
Yes
board and key board
Confidential - Do Not Copy
35
No
Failure point
1. IC401 failure.
2. Signal cable is disconnected.
No
Failure point
The keypad is disconnected.
VP231wb
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