Electrical Safety
For a detailed description of electrical safety, refer to
Electrical Safety for IBM Customer Engineers
, S229–8124.
Observe the following rules when working on electrical equipment:
v Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet. If an electrical
accident occurs, you then can operate the switch or unplug the power cord quickly.
v Do not work alone under hazardous conditions or near equipment that has hazardous voltages.
v Disconnect all power before:
– Performing a mechanical inspection
– Working near power supplies
– Removing or installing main units
v Before you start to work on the machine, unplug the power cord. If you cannot unplug it, ask the customer to
power-off the wall box that supplies power to the machine and to lock the wall box in the Off (O) position.
v If you need to work on a machine that has
exposed
electrical circuits, observe the following precautions:
– Ensure that another person, familiar with the power-off controls, is near you.
Remember: If conditions require a second person, that person must be present when you power off (O) the
printer.
DANGER
Some hand tools have handles covered with a soft material that does not insulate you when
working with live electrical currents. Use only approved tools and testers.
– Use only one hand when working with powered-on electrical equipment; keep the other hand in your pocket
or behind your back.
Safety Information 13
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