IBM 88643RU Service Guide - Page 148

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v Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved. v See Chapter 3, "Parts listing, Type 8864," on page 23 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU). v If an action step is preceded by "(Trained service technician only)", that step must be performed only by a trained service technician. System-error log message Action 3.3V Power Good Fault 1. Reseat the Remote Supervisor Adapter II SlimLine, if present. 2. Reseat the I/O board. 3. (Trained service technician only) Replace the PCI board. 5V Aux Power Good Fault 1. Reseat the I/O board. 2. (Trained service technician only) Disconnect the cable connecting the operator information panel to the I/O board. 3. Replace the I/O board. 4. (Trained service technician only) Replace the PCI board. 5V Power Good Fault Disconnect the monitor and all USB devices from the server; then: 1. Reseat the I/O board. 2. Reseat the microprocessor tray. 3. (Trained service technician only) Replace the PCI board. 12V A Bus Fault 1. Reseat the microprocessor tray. 2. Replace the PCI board. 3. Replace the power backplane 12V B Bus Fault 1. Reseat the following components: a. Disk drives b. SAS hard disk drive backplane cables 2. Replace the following components one at a time, in the order shown, restarting the server each time. a. Disk drives b. SAS hard disk drive backplane c. (Trained service technician only) Power backplane d. (Trained service technician only) PCI board 12V C Bus Fault 1. Reseat the following components: a. PCI adapters b. Microprocessor tray 2. Replace the following components one at a time, in the order shown, restarting the server each time. a. PCI adapters b. (Trained service technician only) PCI board c. (Trained service technician only) Power backplane 132 IBM System x3850 Type 8864: Problem Determination and Service Guide

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v
Follow
the
suggested
actions
in
the
order
in
which
they
are
listed
in
the
Action
column
until
the
problem
is
solved.
v
See
Chapter
3,
“Parts
listing,
Type
8864,”
on
page
23
to
determine
which
components
are
customer
replaceable
units
(CRU)
and
which
components
are
field
replaceable
units
(FRU).
v
If
an
action
step
is
preceded
by
“(Trained
service
technician
only)”,
that
step
must
be
performed
only
by
a
trained
service
technician.
System-error
log
message
Action
3.3V
Power
Good
Fault
1.
Reseat
the
Remote
Supervisor
Adapter
II
SlimLine,
if
present.
2.
Reseat
the
I/O
board.
3.
(Trained
service
technician
only)
Replace
the
PCI
board.
5V
Aux
Power
Good
Fault
1.
Reseat
the
I/O
board.
2.
(Trained
service
technician
only)
Disconnect
the
cable
connecting
the
operator
information
panel
to
the
I/O
board.
3.
Replace
the
I/O
board.
4.
(Trained
service
technician
only)
Replace
the
PCI
board.
5V
Power
Good
Fault
Disconnect
the
monitor
and
all
USB
devices
from
the
server;
then:
1.
Reseat
the
I/O
board.
2.
Reseat
the
microprocessor
tray.
3.
(Trained
service
technician
only)
Replace
the
PCI
board.
12V
A
Bus
Fault
1.
Reseat
the
microprocessor
tray.
2.
Replace
the
PCI
board.
3.
Replace
the
power
backplane
12V
B
Bus
Fault
1.
Reseat
the
following
components:
a.
Disk
drives
b.
SAS
hard
disk
drive
backplane
cables
2.
Replace
the
following
components
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time.
a.
Disk
drives
b.
SAS
hard
disk
drive
backplane
c.
(Trained
service
technician
only)
Power
backplane
d.
(Trained
service
technician
only)
PCI
board
12V
C
Bus
Fault
1.
Reseat
the
following
components:
a.
PCI
adapters
b.
Microprocessor
tray
2.
Replace
the
following
components
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time.
a.
PCI
adapters
b.
(Trained
service
technician
only)
PCI
board
c.
(Trained
service
technician
only)
Power
backplane
132
IBM
System
x3850
Type
8864:
Problem
Determination
and
Service
Guide