IBM 8500R - Netfinity - 8681, Hardware Maintenance Manual

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Power Fault Message in
the System Error Log Failing FRU/Action
12V bus A
(power to PCI slots) 1. Disconnect AC
power.
2. Remove all PCI
adapters except the
I\O function card and
the system
management adapter.
3. Reconnect the AC
power and wait about
30 seconds for the
system management
adapter to initialize.
4. Attempt to start the
system. If the system
starts, one of the FRUs
removed is the failing
FRU. Reinstall the
FRUs one at a time to
identify the failing FRU.
5. If the system does not
start, suspect FRUs in
the following order:
a. I/O Function card
b. System
management
adapter
c. I/O board
d. Midplane
e. Power supply
12V bus B
(power to media devices
and I/O fans) 1. Disconnect AC
power.
2. Remove all internal
media devices (DASD,
CD-ROM, tape, and
floppy drives).
3. Remove the SCSI
backplane.
4. Remove all the I/O
fans (4, 5, and 6)
5. Reconnect the AC
power and wait about
30 seconds for the
system management
adapter to initialize.
6. Attempt to start the
system. If the system
starts, one of the FRUs
removed is the failing
FRU. Reinstall the
FRUs one at a time to
identify the failing FRU.
7. If the system does not
start, suspect FRUs in
the following order:
a. Midplane
b. Power control
card
c. Power supply
Netfinity 8500R - Type 8681
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