Operating Checklist - Agilent Technologies 34410A Service Manual

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
q Verify the front panel power switch is depressed.
q 34410A/11A Verify the power line fuse is installed.
q 34410A/11A Verify the power line voltage setting.
Does the multimeter fail self–test?
q 34410A/11A Verify the correct power line voltage is selected.
q Remove all test connections to the multimeter and run the self–test
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
104
line power.
Use a 250 V 250 mA fuse.
See page 50
See page 50
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.
position for the terminals you are using.
34410A/11A/L4411A Service Guide