Undetermined problems, E “undetermined, Undetermined – IBM 2274 User Manual

Page 108: See “undetermined

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74 IBM Desktop System HMM

Undetermined Problems

If an error code, error message or error beeps is
present, go to “Index of Symptoms, Messages, Error
Codes, or Beeps” on page 38
. If you did not receive
any messages, error codes, or beeps, see if the
symptom is listed in “Table 2-3 Error Symptoms List”
on page 45
. If you still cannot solve the problem,
continue with this check:

1. Check the power supply voltages (See “Power

Supply Connectors and Voltages” on page 111). If
the voltages are correct, return here and continue
with the following steps:

2. Power off the system unit.

3. Perform the following checks, one by one, until you

have isolated the problem FRU (refer to “Parts/
Test Point Locations” on page 107
for locations):

- Load default settings in setup.

- Check all system board jumper positions and

switch settings.

- Check all adapter card jumper positions.

- Check all device jumper positions.

- Check all cables and connectors for proper in-

stallation.

4. If the jumpers, switch, and voltage settings are

correct, continue with the following steps:

Remove or disconnect the following, one at a time:

- Non-IBM devices

- External devices

- Any adapter card (modem card or video card, if

installed)

- CD-ROM drive

- Diskette drive

- Hard disk drive

- DIMM

- Processor

- System board

5. Power on the system unit.

6. Repeat steps 2 through 5 until you find the failing

device or adapter.

7. If software related, reload software from Recovery

CD.

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