Undetermined problems
Use the information in this section if the diagnostic tests did not identify the failure,
the devices list is incorrect, or the system is inoperative.
Notes:
1. Damaged data in CMOS can cause undetermined problems.
2. Damaged data in BIOS code can cause undetermined problems.
Check the LEDs on all the power supplies. If the LEDs indicate the power supplies
are working correctly, complete the following steps:
1. Turn off the computer.
2. Be sure the computer is cabled correctly.
3. Remove or disconnect the following devices (one at a time) until you find the
failure (turn on the computer and reconfigure each time):
v
Any external devices
v
Surge suppressor device (on the computer)
v
Modem, printer, mouse, or non-IBM devices
v
Each adapter
v
Drives
v
Memory modules (minimum requirement = 256 MB (two banks of 128 MB
DIMMs))
Note:
Minimum operating requirements are:
a. One power supply
b. System board
c. One microprocessor and VRM
d. Memory module (with a minimum of two 128 MB DIMMs)
4. Turn on the computer. If the problem remains, suspect the following FRUs in the
order listed:
v
Power supply
v
System board
Notes:
1. If the problem is corrected when you remove an adapter from the system and
replacing that adapter does not correct the problem, suspect the system board.
2. If you suspect a networking problem and all the system tests pass, suspect a
network cabling problem external to the system.
Symptom-to-FRU index
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