Please see the LEGAL - Trademark notice.
Pin
Signal
Vdc Min.
Vdc Max.
1
+12 volts
+11.52
+12.6
2, 3
Ground
4
+5 volts
+4.8
+5.25
If any of the voltages are not correct, replace the power supply.
If all voltages are correct, the power supply is working
properly.
Another 3550 Expansion Unit component might be causing the power supply to shut off.
Return to the procedure that sent you here and continue. (If you have
completed that procedure, go to 'Undetermined Problem'.)
Power Supply Connector P1
Pin
Signal
Vdc Min.
Vdc Max.
1, 2, 3, 4
+5 volts
+4.8
+5.25
5, 6, 7, 8, 10
Ground
9
+20 volts
+19.0
+21.0
Power Supply Connector P2
Pin
Signal
Vdc Min.
Vdc Max.
1, 2
+12 volts
+11.52
+12.6
3
Power Good
+4.0
+5.25
4
On/Off Signal
5
-12 volts
-10.92
-13.2
6, 7
Ground
8
Global Signal
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