Power Supply Voltages - HP 16500A Service Manual

HP 16500A/16501A - Service

Power Supply Voltages

Check the power supply voltages for indications of power supply problems.
1. Turn off the instrument, disconnect the power cord, then remove the top cover.
2. Using a DVM, measure the power supply voltages. Use figure 6-33 for power supply pin
assignments and use table 6-2 for voltages.
3. Return to the power supply flowchart.
Pin
1-5
6
7-9
10
11
12
13
14-20
21
22
23
24-30
31
32
33-37
38
6-38
Table 6-2. Power Supply Voltages
Supply/Signal
Power Supply To Mother Board Connector
+ 5 volt
+5 volt remote sense
+3.5 volt
+3.5 volt remote sense
+12 volt
12 volt
Not connected
Ground
Ground sense
Power valid
3.25 volt remote sense
3.25 volt
5.2 volt current limit
5.2 volt remote sense
5.2 volt
Remote on/off
Voltage
+5 V
+5 V
+3.5 V
+3.5 V
+12 V
12 V
0 V
0 V
+5 V
3.25 V
3.25 V
+2.5 V
5.2 V
5.2 V
+12 V