Power Supply Specifications; Voltage Indicators - HP 330 Service Handbook

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 prop-
erly installed.
lL\1aximum
Voltage Tolerance
Current
+5 V de
4.89 to 5.25 V de 20 A
+12 V
11.86 to 12.72 V de
3.6A
-12 V -11.86 to -12.72 V de 1.1 A
Voltage Indicators
Voltage
-12 V de
+5V
+12 V de
Visual Indication
Front Panel "ON" LED Lit
Self-test LED lit at turn-on.
Front Panel "ON" LED Lit
L
••••
»>~
IONNC::
+..-..-
::J
+
Ie
e,:)
Motherboard
(component side)
Physical Indication
Small Fan Running
Small Fan Running .
Large Fan Running
I
J
I
Figure 4-1. Power Supply Test Points
Troubleshooting
39