IBM IntelliStation M Pro 6225, Руководство по техническому обслуживанию и ремонту

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Undetermined problems
Use the information in this section if the diagnostic tests did not diagnose the
failure, the devices list is incorrect, or the computer is inoperative.
Notes:
1. Damaged data in CMOS memory can cause undetermined problems.
2. Damaged data in BIOS code can cause undetermined problems.
Check the LEDs on the power supply. If the LEDs indicate that the power supply is
working correctly, complete the following steps:
1. Turn off the computer.
2. Make sure that 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 = 512 MB [two 256 MB DIMMs])
The following minimum configuration is required for the computer to operate:
a. Power supply
b. System board
c. Microprocessor
d. Memory module (with a minimum of two 256 MB DIMMs)
e. Video adapter
4. Turn on the computer. If the problem remains, suspect the following FRUs in the
following order:
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 the computer passes all the system
tests, suspect a network cabling problem external to the computer.
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IntelliStation M Pro Types 6225 and 6228: Hardware Maintenance Manual and Troubleshooting Guide