O/S Problems - Samsung 820DXn Service Manual

4. Troubleshooting

4-8. O/S Problems

Symptom - The monitor does not boot
- Check whether the BNC cable is connected correctly.
Major
- Check whether the LVDS cable is connected to the panel correctly.
checkpoints
- Check whether the Lamp connector on the panel is connected to the IP-board correctly.
Diagnostics
MagicNet mode, does the Samsung
Does the error message appear while
Check the CPU and the DIMM memory
Caution Make sure to disconnect the power before working on the IP board.
4-14
When turning the power on in
logo screen appear?
Yes
Does the blue screen appear as
shown in Figure ⑮
Yes
booting, as shown in the figure?
Yes
and replace the network board.
FDM
IC12
Check IC12 and whether the
No
LED is turned on.
No
Replace the FDM
No
Replace the FDM