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Chapter 6 Disassembly and Repair
Operating Checklist
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6
Operating Checklist
Before returning your instrument to Keysight Technologies for
service or repair, check the following items:
Is the instrument inoperative?
• Verify that the ac power cord is connected to the instrument.
• Verify that the front-panel On/Standby switch has been pushed.
Is the display working?
• If the display appears blank, but front-panel keys are lit (and the fan
is working), the display screen saver may be enabled. Press any key
to restore the display.
• If the display appears blank, but front-panel keys are lit (and the fan
is working), the display contrast setting may be too low. Use the
menu to set the display contrast.
Does the instrument fail self-test?
Remove all external connections to the instrument. Errors may be
induced by signals present on the external wiring during a self-test. Long
test leads, even leads that are otherwise unconnected, can act as an
antenna causing pick-up of ac signals.
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