IBM 2140, 2142 manual Device With its own Not supported

2.Perform the following checks, one by one, until you have isolated the problem FRU (refer to “Parts/Test Point Locations” on page 5-1 for locations):

Check all system board jumper positions.

Check all adapter card jumper positions.

Check all adapter card switch settings.

Check all device jumper positions.

Check all cables and connectors for proper installation.

If the jumpers, switch settings, and voltages are correct, return here and continue:

3. Remove or disconnect the following, one at a time:

a.Non-IBM devices

b.External devices

c.Any adapters

d.Modem card

e. DIMMs	(Remove all but one DIMM. Swap last DIMM with known
good	DIMM)

f.Zip Drive

g.CD/DVD-ROM drive

h.Diskette drive i. Hard disk drive

4.Power-on the system unit.

5. Repeat steps 1 through 4 until you find the failing device or adapter.

If

the

symptom changes,

go to “Index of

Symptoms,

Messages,

Error

Codes,

or Beeps” on page 2-9 or to the

check

procedure

for

the

last

item

tested.

Replace

the last item tested if

the

system

operates

normally after

removing

the

last

item.

Note:

If

you are unable to find

a check procedure that corresponds to the

device or error code, you

either

have

an

IBM

device

with its own

service manual or a

device

not supported

by

IBM

diagnostic

tests.

If all devices and adapters have been removed, and the problem remains:

1.Remove all cables from connectors on the system board except the power supply and switch cables. See “System Board Layout—Type

A-1”	on page 5-2 and “System Board Layout—Type A-2” on page 5-5
for	connector locations.
2. Remove all		but one DIMM from sockets. Replace last DIMM with
known	good	DIMM.

3.Power-on the system unit and listen for any beeps.

Check Procedures2-57