5 Disassembly and Repair
84 Keysight U3401A User’s and Service Guide
Operating Checklist
Before returning your multimeter to Keysight for service or repair check the
following items:
Is the multimeter inoperative?
?
Verify the power line voltage setting.
?
Verify the power line fuse is installed.
?
Check the power cord is connected to multimeter and to AC line power.
?
Verify the front panel power switch is depressed.
See page 86
Is the mutimeter’s current input inoperative?
?
Verify the current input fuse.
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