Section 4: Maintenance
S535 Wafer Acceptance Test System Administrative Guide
4-4
S535-924-01 Rev. B / January 2019
Instrument removal and installation
The following topics describe the process for removing or installing instruments in the system, and
any special precautions that must be taken.
Remove system power
Severe personal injury or death due to electrical shock or electrocution may result if power is
not removed before moving, removing, or installing equipment. Do not attempt to perform
these procedures unless you are qualified to do so and are wearing personal protective
equipment (PPE) suitable for voltages greater than 40 VAC.
Make sure the system and instruments that are being installed, moved, or removed are turned
off with all power source/cables unplugged.
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 3-5).
3.
Place the system cabinet power switch on the front-panel door in the OFF position.
4.
Place the main circuit breakers on the power distribution units (PDUs) on the front and back of
the cabinet in the OFF position.
5.
Disconnect the source power to the S535 system (power cords on back of the PDUs).
6.
Place a lock and tag on the main circuit breakers of the PDUs.
7.
Wait five minutes before accessing any high-voltage units.
