IBM 88371RU, Руководство по техническому обслуживанию и устранению неисправностей

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Note: See “System replaceable units” on page 122 to determine which components should be replaced by a field
service technician.
Bus fault messages FRU/action
Failure reading I2C device.
Check devices on bus 2.
v
System board.
Failure reading I2C device.
Check devices on bus 3.
1. Reseat the cable between the SCSI backplane and the system
board (see “System-board internal connectors” on page 61.
2. SCSI backplane.
3. Operator information panel.
4. Power supply.
5. System board.
Failure reading I2C device.
Check device on bus 4.
v
System board
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.
Damaged data in CMOS memory or damaged BIOS code can cause undetermined
problems. To reset the CMOS data, use the password reset jumper to override the
power-on password and clear the CMOS memory; see “Erasing a lost or forgotten
password (clearing CMOS memory)” on page 78. If you suspect that the BIOS code
is damaged, see “Recovering the BIOS code” on page 77.
Check the LEDs on all the power supplies (see “Hot-swap power-supply LED
errors” on page 96). If the LEDs indicate the power supplies are working correctly,
complete the following steps:
1. Turn off the server.
2. Be sure the server is cabled correctly.
3. Remove or disconnect the following devices (one at a time) until you find the
failure (turn on the server and reconfigure each time):
v Any external devices
v Surge suppressor device (on the server)
v Modem, printer, mouse, or non-IBM devices
v Each adapter
v Drives
v Memory modules (minimum requirement = two 256 MB DIMMs)
Note: Minimum operating requirements are:
a. Power supply
b. Power backplane
c. System board
d. One microprocessor and VRM
e. Memory (with a minimum of two 256 MB DIMMs)
f. Front operator panel
g. Two fan backplanes
4. Turn on the server. If the problem remains, suspect the following FRUs in the
order listed:
v
Power supply
v
System board
Chapter 6. Symptom-to-FRU index
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