Service manual

A6. Show “No Signal” on screen
( Test pattern: 32 gray 1280X1024 60HZ )
A7. Keypad can not work
Check the signal level of RM9,
RM10,RM11 is FIG 5.
YES
Check the HS and VS is
FIG 6. and FIG 7.
NO
YES NO
NO
Check that the signal
cable is fully connected
between the Inverter and
touch board
Failure point
The cable is disconnected
Failure point
1. ICT1 failure
2. LED failure
Failure point
1.The video connector is disconnected
2.Signal cable disconnected
ViewSonic Corporation
Confidential – Do Not Copy
VG800b
49