ViewSonic VX500PLUS-1 Service Manual page 47

5. Show "No Signal" on screen
(Test pattern: 32 gray 1024X768 60HZ)
Check the HS and VS is
FIG 6. and FIG 7.
ViewSonic Corporation
Check the signal level of RM9,
RM10, RM11 is FIG 5.
YES
NO
NO
Failure point
1.The video connector is disconnected
2.Signal cable disconnected
44
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VX500+-1