Samsung 320TSn-2 - Troubleshooting: Operating System Issues

4-12
4. Troubleshooting
4-7. O/S Problems
Symptom The LED power turns on but the screen is blank when the AV cable is connected.-
Major
checkpoints
Check whether the BNC cable is connected correctly.
- Check whether the LVDS cable is connected to the panel correctly.
- Check whether the Lamp connector on the panel is connected to the IP-board correctly.
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Diagnostics
Bios IC
FDM
Yes
Replace SUB SMPS.
No
If Monitor is turned on at the MagicInfo,
Is DC 5V appear Pin#2(Stand-by 5V)
at CN6?
If Monitor is turned on at the MagicInfo,
Does the samsung logo appear?
Check whether the LED is
turned on, and check the Bios
IC.
No
Yes
Does Blue Screen like the picture ⑮
appear?
No
Yes
When MagicInfo is booting, Does error
message like the picture appear?
16
Yes
Check the CPU and DIMM memory
and replace the Network Board.
Replace SUB FDM.
Replace SUB FDM.
No
Caution Make sure to disconnect the power before working on the IP board.