5Service
112 Keysight E3633A and E3634A Service Guide
Operating Checklist
Before returning your power supply to Keysight for service or repair check the
following items:
Is the power supply inoperative?
– Verify that the ac power cord is connected to the power supply.
– Verify that the front-panel power switch is depressed.
– Verify that the power-line fuse is installed:
Use the 6.3 AT, 250 V fuse for 100 or 115 Vac operation.
Use the 3.15 AT, 250 V fuse for 230 Vac operation.
– Verify the power-line voltage setting.
“To prepare the Power Supply for Use” on page 28.
Does the power supply fail self-test?
– Verify that the correct power-line voltage is selected.
“To prepare the Power Supply for Use” on page 28.
– Remove all load connections to the power supply.
Ensure that all terminal connections are removed while the self-test is
performed.
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