IBM 1400 (2611) manual Electrical Safety, unplug

ŸReinstall all covers correctly before returning t machine to the customer.

Electrical Safety

Observe the following rules when working on electrical equipment.

	Important
Use		only	approved tools and test equipment. Some
hand		tools		have handles covered with a			soft	mater
that		does not insulate you when working with live
trical		currents. Many			customers have, near their e
ment, rubber floor mats that contain small conductive
fibers to decrease electrostatic discharges. Do
this		type		of mat to	protect yourself	from		electr
shock.

ŸFind the room emergency power-off (EPO) switch,

disconnecting switch, or electrical outlet. If a trical accident occurs, you can then operate t switch or unplug the power cord quickly.

ŸDo not work alone under hazardous conditions or

near equipment that has hazardous voltages.

Ÿ Disconnect all power before:

– Performing a mechanical inspection

– Working near power supplies

– Removing or installing main units

ŸBefore you start to work on the machine, unplug

power	cord.	If you cannot	unplug	it, ask	the	c
to power-off the wall box that supplies					power	t
machine	and	to lock the wall	box	in the	off	po

ŸIf you need to work on a machine that has ex

electrical circuits, observe the following precau

–Ensure that another person, familiar with the power-off controls, is near you.

Attention: Another person must be there to switch off the power, if necessary.

–Use only one hand when working with powered-on electrical equipment; keep the oth hand in your pocket or behind your back.

Attention: There must be a complete circuit t cause electrical shock. By observing the ab rule, you may prevent a current from passing through your body.

–When using testers, set the controls correct and use the approved probe leads and acce ries for that tester.

12 ThinkPad i Series 1400 HMM