Fujitsu M10 Product Notes page 211

Table 7-5 Problems resolved in version 1130 of the PCI expansion unit firmware
SPARC M10-
RTI No. 1 4 4S
RTIF2- x x x
131120-001
Description
If an external factor causes an instantaneous
voltage drop or the like, an error in the
power supply unit (PSU) of the PCI
expansion unit is erroneously detected, and
the error log "Msg: PSU failed" may be
registered. Moreover, if the erroneous
detection of this PSU error occurs
simultaneously in two PSUs of the PCI
expansion unit, the physical partition
(PPAR) is shut down.
You can use the showlogs error -v
command to check whether this problem is
due to an instantaneous voltage drop
caused by an external factor. Suppose that
the execution result for this command is
"Msg: PSU failed" and that the first, second,
and third bytes on the fourth line of
Diagnostic Code have the following values.
The problem may be due to, for example, an
instantaneous voltage drop caused by an
external factor.
First byte; "00"
Second byte; The sixth (x04) bit from the left
is 0 (any of *0, *1 *2, *3, *8, *9, *a, or *b).
Third byte: The third (x20) bit from the left
is 1 (any of 2*, 3*, 6*, 7*, a*, b*, e*, or f*).
"*" for the second and third bytes indicates
any value.
The first to third bytes on the fourth line of
Diagnostic Code are "000120".
XSCF> showlogs error -v
Date: Oct 30 10:27:17 JST 2013
Code: 80000408-00cb000000ff0000ff-
110000246101000000000000
Status: Alarm Occurred: Oct 30 10:27:17.597
JST 2013
FRU: /MBU/PCI#1/PCIBOX#7010/PSU#1
Msg: PSU failed
Diagnostic Code:
00013730 31300100 0000
00010000 00000000 0000
00010000 00000000 0000
00012000 00000000 00000000 00000000
00000000 00000000 0000
Workaround
There is no effective workaround.
If the value of the first to third bytes on
the fourth line of Diagnostic Code does
not match the value in the [Description]
column, assume that a PSU failure
occurred.
[How to restore]
- For this event occurring in a single PSU
- If the error log "Msg: PSU RECOVERY"
is registered, the system has already
been restored from the instantaneous
voltage drop. The system can be
operated continuously.
- If the error log "Msg: PSU RECOVERY"
is not registered, a PSU failure
occurred. Replace the PSU.
- For this event occurring in two PSUs
The PPAR is shut down. Reactivate the
PPAR. If the PCI expansion unit cannot
be powered on, it indicates that a PSU
has failed. Replace the PSU.
Chapter 7 Information on PCI Expansion Unit Hardware 197