
Power supply
Note
The Front Fan and Disk Fan A are controlled by the
System Management Controller and 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
proper installation.
Power Cord
On/Off Switch
connector
On/Off Switch
Power Supply
connector
System Board
Power Supply
connectors
microprocessor(s)
connection
Reseat
2. Check the power cord
for proper continuity.
Power Cord
3. Check the power-on
switch for continuity.
Power-on Switch
If the above 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.
1
10
11
20
Pin
Signal
Function
1
3.3 V
+3.3 V dc
2
3.3 V
+3.3 V dc
3
COM
Ground
4
5 V
+5 V dc
5
COM
Ground
6
5 V
+5 V dc
7
COM
Ground
8
POK
Power Good
IBM Netfinity 3000 - Type 8476
45
Summary of Contents for 847620U - Netfinity 3000 - 20U
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