If required, contact a Keysight Technologies Sales and Service office to arrange for proper cleaning to ensure that
safety features and performance are maintained.
Electrostatic Discharge (ESD) precautions
Almost all electrical components can be damaged by electrostatic discharge (ESD) during handling. Component
damage can occur at electrostatic discharge voltages as low as 50 V.
The following guidelines will help prevent ESD damage during service operations:
– Disassemble instruments only in a static-free work area.
– Use a conductive work area to reduce static charges.
– Use a conductive wrist strap to reduce static charge accumulation.
– Minimize handling.
– Keep replacement parts in original static-free packaging.
– Remove all plastic, foam, vinyl, paper, and other static-generating materials from the immediate work area.
Troubleshooting
Before troubleshooting or repairing the instrument, make sure the failure is in the instrument rather than any
external connections. Also make sure that the instrument was accurately calibrated within the last year (see
Calibration Adjustment Procedures > Calibration Interval
for details).
Perform the following verifications if the unit is inoperative:
– Verify that the ac power cord is connected to the power supply.
– Verify that the front-panel power switch is depressed.
– Verify that the correct power-line fuse is installed. Refer to
EDU36311A User's Guide
for details.
– Verify the power-line voltage setting.
Self-Test Procedures
A power-on self-test occurs automatically when you turn on the power supply. This limited test assures you that the
power supply is operational.
Press
Utilities
>
Instr. Setup
>
Self Test
to perform the complete self-test of the power supply. It takes approximate
2 seconds for the self-test to complete.
You can also perform a complete self-test from the remote interface, see Programming Guide for details.
– If the self-test is successful, "Self Test Passed" is displayed on the front panel.
– If the self-test fails, "
" is displayed on the front panel. Press
Utilities
>
Help
>
Error
to record the error code
and message and contact Keysight support if necessary.
– If the self-test is successful, this indicates a high chance that the power supply is operational.
Keysight EDU36311A Service Guide
9
