HP 9000 Series 300

Power Supply Specifications
Make sure that the computer is properly grounded. It requires a three-wire power cable and
the power supply retaining/grounding screw must be installed. Also, make sure that the power
supply access door is properly installed.
Voltage Tolerance Maximum
Voltage and Ripple
Current
-12 V -11.86 to -12.72 V
1.1 A
+5 V
4.89 to 5.25 V 20 A
+12 V
11.86 to 12.72 V 3.6 A
Power Supply Test Points
Voltage Test Point to Ground
Visual Indication
-12 V Motherboard -12 V pin
Front Panel LED Lit
+5 V
Motherboard +5 V pin
Processor
Board Test
LEDs Lit
at power-up
+12 V Motherboard + 12 V pin Front Panel LED Lit
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28 Troubleshooting
Power Supply Test Points
••••
»>~
Il1NNC
+.-.-::1
+ I 0
Motherboard
(component side)
C5
I
J
J
Other Indication
Small Fan Running
Small Fan Running
Large Fan Running