IBM SA38-0512-03 manual MAP 1520 Power

MAP 1520: Power

Notes:

1.This is not a start of call MAP. Use this Power MAP only if you have been directed here from a MAP stepDiagnosticsin theInformation for Multiple Bus

Systems .

2.The Model 150 has a power LED located on the operator panel. When the

system is powered on the LED should be on solid.

This procedure is used to locate power problems in system units. If a problem detected, this procedure helps you isolate the problem to a failing unit.

Observe the following safety notice during service procedures.

DANGER

An

electrical

outlet

that

is

not

correctly

wired

could

place

hazardous

voltage

on

metal

parts

of

the

system

or

the

devices

that

attach

to

the

system.

It

is

the

responsibility

of

the

customer

to

ensure

that

the

outlet

is

correctly wired and grounded to

prevent

and

electrical

shock.

Before

installing

or

removing

signal

cables,

ensure

that

the

power

cables

for

the

system

unit

and

all

attached

devices

are

unplugged.

When

adding

or

removing

any

additional

devices

to

or

from

the

system,

ensure

that

the

power

cables

for

those

devices

are

unplugged

before

the

signal

cables

are

connected.

You

must

disconnect

all

power

cables

from

the

existing

system

before

you

add

a

device.

Use

one

hand,

when

possible,

to

connect

or

disconnect

signal

cables

to

prevent a possible shock from

touching

two

surfaces

with

different

electrical

potentials.

During

an electrical storm, do not

connect cables for display stations,

printers,

telephones,

or

station

protectors

for

communication

lines.

CAUTION:

This

product

is

equipped

with

a

three–wire power

cable

and

plug

for

the

user's

safety. Use this power cable with

a

properly

grounded

electrical

outlet

to

avoid

electrical

shock.

Chapter 2. Maintenance Analysis Procedures 2-15(MAPs)