IBM SA38-0512-03 manual Turn, Stay

Step 1520-4

Note: Either the power supply, the system board, or the power switch is defective.

To test each FRU, exchange the FRUs that have not already been exchanged in the following order.

ŸPower supply

ŸPower Switch

ŸSystem board (See notes on 2-1.) 1. Turn the power off.

2.

Unplug

the

system

unit

power

cable

from

the

wall

outlet.

3.

Exchange

one

of

the

FRUs

in

the

list.

4.

Connect

the

system

unit

power

cable

to

the

wall

outlet.

5. Turn

the

power on.

Does

the

fan

in

the

power

supply

turn

on and

the

power LED

come

on and

stay

on?

NOReinstall the original FRU.

Repeat this step until the defective FRU is identified.

YES Go to "Map 0410: Repair Checkout"Diagnosticsin the Information for

Multiple Bus Systems.

2-187043 43P Series Service Guide