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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