4 Troubleshooting
4-1
4 Troubleshooting
Notes: 1. Before troubleshooting, setup the PC's display as below.
- Resolution: 1600 x 1200
- H-frequency: 75 kHz
- V-frequency: 60 Hz
2. If no picture appears, make sure the power cord is correctly connected.
3. Check the following circuits.
- No raster appears: Function PBA, Main PBA, IP Board
- 5V develop but no screen: Main PBA
- 13V, 5V does not develop: IP Board, Main PBA
4-1 No Power
Does proper DC 13V appear at
Pin 5, 6, 7 of CN501?
Check IP Board and Panel Cable.
Check Function ass'y.
Yes
No
Does the BL_EN signal appear
at R525?
Check R525.
No
Yes
Replace IP Board.
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