ViewSonic VG800-2 Service Manual page 52

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