Service Guide 5
Keysight U8001A/U8002A User’s and Service Guide 53
Troubleshooting
This section provides a brief check list of common failures. Before troubleshooting
or repairing the power supply, make sure that the failure is in the instrument
rather than any external connections. Also make sure that the instrument is
accurately calibrated.
Unit is inoperative
– Verify that the AC power cord is connected to the power supply.
– Verify that the front-panel power switch is at “ON” position.
– Verify the power-line voltage setting.
– Verify that the power-line fuse is installed:
Model Part number Part description
U8001A 2110-0014
2110-0006
Fuse 4.0 A T for 100 Vac and 115 Vac
Fuse 2.0 A T for 230 Vac
U8002A 2110-0722
2110-1425
Fuse 6.25 A T for 100 Vac and 115 Vac
Fuse 2.8 A T for 230 Vac
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