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20-pin main power supply connection
See “A40 and A40P system board layout” on page 67 for connector locations.
Attention
These voltages must be checked with the power supply cables connected
to the system board.
Pin Signal Function
1 3.3 V +3.3 V dc
2 3.3 V +3.3 V dc
3 COM Ground
4 5V +5Vdc
5 COM Ground
6 5V +5Vdc
7 COM Ground
8 POK Power Good
9 5VSB Standby Voltage
10 12 V +12 V dc
11 3.3 V +3.3 V dc
12 -12V -12Vdc
13 COM Ground
14 PS-ON DC Remote Enable
15 COM Ground
16 COM Ground
17 COM Ground
18 No voltage Not used
19 5V +5Vdc
20 5V +5Vdc
If the voltages are not correct, and the power cord is good, replace the power
supply.
Chapter 2. Types 6568/6569/6648/6649 31