Chapter 3 Troubleshooting - Dell PowerEdge M420 User Manual

Rev 1.0
3 Troubleshooting
As soon as a pass through module is plugged in make sure that the status LED shows green.
The power LED for the pass through module shuts off:
1. Check that the there is adequate ventilation.
2. Make sure that there is nothing blocking the front or rear of the chassis and that the fan mod-
ules and ventilation holes are not blocked (especially dust over the holes).
3. If you find dust blocking the holes it is recommended to clean the fan unit and remove the dust
from the front and rear panels of the pass through module using a vacuum cleaner.
4. Remove and Reinstall the PTM.
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Troubleshooting