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Power supply



Power supply

Note: The Front Fan and Disk Fan A are controlled by the System Management Controller (LM80) but the power supply fan is not.

If the power-on indicator is not on, the power-supply fan is not running, or the computer will not power-off, do the following:

Check/Verify    FRU/Action
  
1. Check the following for    Reseat
proper installation.
- Power Cord
- On/Off Switch connector
- On/Off Switch Power
Supply connector
- System Board Power
Supply connectors
- Microprocessor(s)
connection
2. Check the power cord    Power Cord
for proper continuity.
3. Check the power-on    Power-on Switch
switch for continuity.


If the above items are correct, check the following voltages.

  - Attention - These voltages must be checked with the power supply cables connected to the system board or riser card.

 


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