S540 Power Semiconductor Test System Administrative Guide
Section 4: Maintenance
S540-924-01 Rev. D / January 2019
4-5
To remove system power before performing maintenance or replacement of components:
Follow precautions for removing hazardous voltage from the probe or other types of test
fixtures before handling.
1.
Close any software that is open on the computer.
2.
Shut down the system computer using the instructions in
(on page 3-6).
3.
Place the system cabinet power switch on the front-panel door in the OFF position.
4.
Place the main circuit breaker on the power distribution unit (PDU) on the back of the cabinet in
the OFF position.
5.
Disconnect the source power to the S540 system (power cord on back of the PDU).
6.
Place a lock and tag on the main circuit breaker of the PDU.
7.
Wait five minutes before accessing any high-voltage units.
Heavy instrument removal and installation
Special handling precautions should be taken for heavy instrumentation removal and installation. The
following topics describe these precautions.
Moving instruments weighing 20 pounds to 40 pounds
The following instruments require two people to move them. Some of these instruments may require
mechanical lifting equipment if they have additional options installed that cause them to weigh more
than 40 pounds or if they are located at or near the top of the system cabinet.
Some instruments in the S540 system are not heavy enough to require a two-person lift individually,
but when put together in a rack, require two people to remove and install them safely.
Instruments in the S540 system that require a two-person lift include:
4200A-SCS Parameter Analyzer with only the CVU option installed
707B Switch Matrix Mainframe with no cards installed
Multiple 2636B or 2657A SourceMeter
®
Instruments racked together horizontally
Multiple DMM7510 Digital Multimeters racked together horizontally
The Comp-41 system computer, if not located near top of the system cabinet