ViewSonic VX500PLUS-1 Service Manual page 48

15” color tft lcd display
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6. Keypad cannot work
YES
Failure point
1. ICT1 failure
2. LED failure
ViewSonic Corporation
Check that the signal
cable is fully connected
between the Inverter and
touch board
The cable is disconnected
45
NO
Failure point
Confidential – Do Not Copy
VX500+-1

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