Technical data

7 Disassembly and Repair
Operating Checklist
220 U3606A User’s and Service Guide
Operating Checklist
Before returning your instrument to Agilent for service or repair, do a
check on the following items:
Is the instrument inoperative?
❏ Verify that the power cord is connected to the instrument and to the
AC line power.
❏ Verify that the front- panel power switch has been pushed.
❏ Verify that the power- line fuse is installed and not open.
❏ Verify the power- line voltage setting.
Does the instrument fail self- test?
❏ 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.
❏ 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?
❏ Verify the current input fuse.