Observe the special safety precautions when work with very high voltages; these instruction the safety sections of maintenance information. extreme care when measuring high voltages. Re larly inspect and maintain your electrical hand for safe operational condition.

Ÿ Do not use worn or broken tools and testers.

ŸNever assume that power has been disconnected from a circuit. First, check that it has be powered-off.

ŸAlways look carefully for possible hazards in

work area. Examples of these hazards are moi floors, nongrounded power extension cables, powe surges, and missing safety grounds.

ŸDo not touch live electrical circuits with the surface of a plastic dental mirror. The surf conductive; such touching can cause personal in and machine damage.

ŸDo not service the following parts with the p when they are removed from their normal opera

places in a machine:

– Power supply units

Pumps

– Blowers and fans

Motor generators

and similar units. (This practice ensures co grounding of the units.)

Ÿ If an electrical accident occurs:

Use caution; do not become a victim your- self.

Switch off power.

Send another person to get medical aid.

Safety Inspection Guide

The intent of this inspection guide is to assist fying potentially unsafe conditions on these produc machine, as it was designed and built, had requ items installed to protect users and service per injury. This guide addresses only those items. H good judgment should be used to identify potenti hazards due to attachment of non-IBM features or not covered by this inspection guide.

If

any

unsafe

conditions

are

present, you must

how

serious

the

apparent

hazard could be and w

you

can

continue

without

first

correcting

the pro

sider these

conditions and the

safety

hazards

ŸElectrical hazards, especially primary power ( voltage on the frame can cause serious or f trical shock).

14 ThinkPad 390X / i 1700 HMM

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IBM I 1700 manual Safety Inspection Guide