Undetermined Problem

You are here because the diagnostic

tests

did not

iden

which

adapter or

device

failed,

the

Devices

List

is

inc

or the

system

is

inoperative. Follow

the

procedures

below

(do

not

isolate

FRUs that are

known to

be

good).

 

 

Check

the power supply that was being

used

at

the

time

the

failure. (See

“Power

Systems

Checkout” on

page 71.)

 

If the power supply is operating correctly, continue with following procedure.

1.Power-off the computer.

2.Remove or disconnect one of the following devices or adapter. (Do not isolate FRUs that are known to be good.)

a.Non-IBM devices

b. Modem, PC card, printer, mouse, or other external devices

c.Battery pack

 

d. Hard

disk

drive

(removable disk

drive)

 

 

 

 

e. IC

DRAM

card

 

 

 

 

 

 

 

 

 

 

 

f. Any adapter or device

 

 

 

 

 

 

 

 

Note:

 

Replacing

the

hard

disk

drive,

an

IC

 

 

 

 

 

 

DRAM card, or any adapter or

device,

 

 

 

 

 

 

might

cause

configuration

errors.

 

 

 

3.

Power-on

 

the

computer.

 

 

 

 

 

 

 

 

4.

If

the

problem

is

not

corrected,

repeat

steps 1

th

 

3 until

you find the failing FRU

or

until

all

FRUs

hav

 

been

removed.

 

 

 

 

 

 

 

 

 

 

 

 

5.

If

all

of

the

FRUs

listed

have

been

removed

and

th

 

problem

is

not

 

corrected, replace

the

following

FRUs:

ŸSystem board

ŸProcessor card

ŸVideo card

ThinkPad 700, 700C, 720, 720C (9552)93