IBM manual System board DC/DC card LCD assembly CPU card ThinkPad 380Z

Verify that the power supply being used at the time of the failure is operating correctly. (See “Power Systems

Checkout” on page 13):

1.Turn off the computer.

2.Visually check them for damages. If any problems

are found, replace the FRU.

3. Remove or disconnect all of the following devices:

a.Non-IBM devices

b.Devices attached to the port replicator

c.Printer, mouse, and other external devices

d.Battery pack

e. Hard disk drive f. CD-ROM and FDD

g.DIMM

h.PC Cards

4.Turn on the computer.

5.

Determine

if

the

problem

is

solved.

6.

If the problem is solved, reconnect the removed

devices

one

at

a

time

until

you

find

the failing FRU.

7.

If

the

problem

remains,

replace

the

following

FRUs

one

at

a

time.

Do

not replace a

nondefective

FRU.

a.System board

b.DC/DC card

c.LCD assembly

d.CPU card

ThinkPad 380Z 33