2 Service and Maintenance
106 Keysight U3606B Service Guide
Operating Checklist
Before returning your instrument to Keysight for service or repair, do a check on
the following items:
Is the instrument inoperative?
1 Verify that the power cord is connected to the instrument and to the AC line
power.
2 Verify that the front-panel power switch has been pushed.
3 Verify that the power-line fuse is installed and not open.
4 Verify the power-line voltage setting.
Does the instrument fail self-test?
1 Remove all test connections to the instrument and run the self-test again.
Errors may be induced by AC signals present on the input terminals of the
instrument during the self-test. Long test leads can act as an antenna causing
pick-up of AC signals.
2 Remove all load connections to the output terminals.
Ensure that all terminal connections are removed while the self-test is
performed.
Is the instrument current input inoperative?
1 Verify the current input fuse.
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