ViewSonic VP231wb

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