Agilent Technologies E4980A Service Manual page 30

Troubleshooting
Power On Sequence Troubleshooting
Figure 4-2 Output Voltage Location
P6 -12V
P5 +12V
P4 +3.3V
P1 +5V
•
Table 4-1
30
J11
If the voltmeter reading is not within the following limits, replace the power supply
unit.
Power Supply Unit Output
supply
+ 3.3 V
+ 5 V
+ 12 V
- 12 V
P501
P3 +12V
J6
P1 +5V
J5
P3 +3.3V
P4 +3.3V
P5 +12V
P6 -12V
Range
+ 3.2 to + 3.4
+ 4.8 to + 5.2
+ 11.4 to + 12.6
- 11.4 to -12.6
Chapter 4