104 34410A/11A/L4411A Service Guide
4 Disassembly and Repair
Operating Checklist
Before returning your multimeter to Agilent for service or repair check the
following items:
Is the multimeter inoperative?
q Verify that the power cord is connected to the multimeter and to ac
line power.
q Verify the front panel power switch is depressed.
q 34410A/11A Verify the power line fuse is installed.
Use a 250 V 250 mA fuse.
q 34410A/11A Verify the power line voltage setting.
See page 50
Does the multimeter fail self–test?
q 34410A/11A Verify the correct power line voltage is selected.
See page 50
q Remove all test connections to the multimeter and run the self–test
again.
Errors may be induced by ac signals present on the multimeter input
terminals during self–test. Long test leads can act as an antenna
causing pick–up of ac signals.
Is the mutimeter’s current input inoperative?
q Verify the current input fuse.
Does the multimeter fail to respond to input signals?
q 34410A/11A Verify that the Front/Rear selector switch is in the correct
position for the terminals you are using.
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