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Chapter 5: Troubleshooting
Troubleshooting the Agilent 1680A,AD-series
3 Remove the power supply from the instrument. Refer to “To remove the
power supply” in Chapter 6.
4 After removing the power supply, connect a power cord to the power
supply and plug the power cord into line power.
5 Using DVM, measure the power supply voltages.
Power Supply Voltages
6 Note problems with the power supply, then unplug the power supply from
line power. Return to the flow chart.
CN1 CN2
Pin Voltage Pin Voltage
1-5 +3.3 V 1-4 -5.2 V
6-7 COM 5 +12 V
8-10 +5 V 6-8 -12 V
11-12 COM 9-12 COM
13-14 +3.3 V 13 +12 V
15-19COM 14-16COM
20-21 +5 V
22-24 COM