5
6
Troubleshooting – No PC(D-SUB) Video
Troubleshooting – No PC(D-SUB) Video
Is TX** signal sent to Pin 14 and 15 of CN403 14, 15?
Does the waveform as the figure at Pin 6 ( H-sync)
and Pin 8 (V-sync) of IC103 appear?
Does the LED light up when turn on the power?
Does 5V appear at Pin 9 of CN101 D-Sub?
Check the power port.
NO
YES
Check the cable connection.
NO
YES
Replace IC103.
NO
YES
The Scaler(IC408) is abnormal.
Replace the main board.
NO
Check the cable between the main board and panel and
replace the LCD panel.
YES
5
6
CN403
CN101
IC103
C603
To Next Page
Loading...
