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S540 Power Semiconductor Test System Administrative Guide
Section 4: Maintenance
S540-924-01 Rev. D / January 2019
4-7
Adjustment
Keithley Instruments recommends annual adjustment of the individual instruments in your system and
offers this as an on-site service. A field service engineer (FSE) will adjust instrumentation and perform
system verification according to the warranted system specifications. For more information about
adjustment or other S540 services, contact your sales representative.
You can also do system verification as described in the
S540 Reference Manual
(part number
S540-901-01).
Hazardous voltages may be present on the probe card adapter, even after you disengage the
interlock. Cables can retain charges after the interlock is disengaged, exposing you to live
voltages that, if contacted, may cause personal injury or death.
Never attempt to touch or change a probe card when tests are running. You must be
absolutely certain that all tests have stopped before making contact with anything in the
vicinity of the probe card adapter. Also, never run tests without a probe card installed.
For information about instrument-level adjustment, refer to documentation for each of the instruments
in the system (available on the
Restore system power
Restore system power after properly performing the required maintenance or replacement of
components. Make sure that all connections are secure and connected correctly.
To restore system power:
1.
Remove the lock and tag placed on the main circuit breaker of the power distribution unit (PDU).
2.
Connect the source power to the S540 system (power cord on the back of the PDU).
3.
Place the main circuit breaker on the PDU in the ON position.
4.
Close the rear cabinet door.
5.
Make sure the system computer and all instrument power switches are in the ON position.
6.
Close the front cabinet door.
With the system cabinet POWER switch in the OFF position, the EMERGENCY OFF (EMO) light
should be off. If the EMO light stays on, the power is not restored to all instruments in the system.