IBM 88643RU Service Guide - Page 154

Temperature

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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 Memory Card x removed Information only; if the message persists: Note: Make sure you re-enable the memory in the Configuration/Setup Utility program. See, "Memory problems" on page 93 1. Make sure that the memory card lever is securely latched. 2. Reseat the memory card. MMIO operation error Invalid memory access error. 1. Check the integrity of the installed operating system. 2. Check that the latest service pack is applied to the operating system. 3. Check that the latest device drivers are installed. Multiple fan failures Replace any missing or failed fans or power supplies. OS Watchdog Triggered 1. Reconfigure the O/S watchdog timer to be a higher value. 2. Reinstall the Remote Supervisor Adapter II SlimLine device driver for the operating system. 3. Disable the O/S watchdog. 4. Check the integrity of the installed operating system. 5. Reinstall the operating system with applicable device drivers. PCI Card Power Good Fault 1. Reseat the Remote Supervisor Adapter II SlimLine, if present. 2. Reseat the I/O board. 3. Replace the I/O board. 4. (Trained service technician only) Replace the PCI board. POST Watchdog Triggered 1. Reconfigure the POST watchdog timer to be a higher value (consistent with the time it takes to complete POST). 2. Disable the POST watchdog. Power Good Fault detected by memory card. 1. Reseat the memory cards. 2. Reseat the DIMMs. 3. Reseat the microprocessor tray. 4. (Trained service technician only) Replace the power backplane. 5. (Trained service technician only) Replace the microprocessor tray. Power Supply Temperature Warning 1. Make sure that the power supply fans have good airflow and are not obstructed. 2. Make sure the room temperature is within the recommended range (see "Environment" at "Features and specifications" on page 3). 3. Replace the power supply. 138 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
Memory
Card
x
removed
Information
only;
if
the
message
persists:
Note:
Make
sure
you
re-enable
the
memory
in
the
Configuration/Setup
Utility
program.
See,
“Memory
problems”
on
page
93
1.
Make
sure
that
the
memory
card
lever
is
securely
latched.
2.
Reseat
the
memory
card.
MMIO
operation
error
Invalid
memory
access
error.
1.
Check
the
integrity
of
the
installed
operating
system.
2.
Check
that
the
latest
service
pack
is
applied
to
the
operating
system.
3.
Check
that
the
latest
device
drivers
are
installed.
Multiple
fan
failures
Replace
any
missing
or
failed
fans
or
power
supplies.
OS
Watchdog
Triggered
1.
Reconfigure
the
O/S
watchdog
timer
to
be
a
higher
value.
2.
Reinstall
the
Remote
Supervisor
Adapter
II
SlimLine
device
driver
for
the
operating
system.
3.
Disable
the
O/S
watchdog.
4.
Check
the
integrity
of
the
installed
operating
system.
5.
Reinstall
the
operating
system
with
applicable
device
drivers.
PCI
Card
Power
Good
Fault
1.
Reseat
the
Remote
Supervisor
Adapter
II
SlimLine,
if
present.
2.
Reseat
the
I/O
board.
3.
Replace
the
I/O
board.
4.
(Trained
service
technician
only)
Replace
the
PCI
board.
POST
Watchdog
Triggered
1.
Reconfigure
the
POST
watchdog
timer
to
be
a
higher
value
(consistent
with
the
time
it
takes
to
complete
POST).
2.
Disable
the
POST
watchdog.
Power
Good
Fault
detected
by
memory
card.
1.
Reseat
the
memory
cards.
2.
Reseat
the
DIMMs.
3.
Reseat
the
microprocessor
tray.
4.
(Trained
service
technician
only)
Replace
the
power
backplane.
5.
(Trained
service
technician
only)
Replace
the
microprocessor
tray.
Power
Supply
Temperature
Warning
1.
Make
sure
that
the
power
supply
fans
have
good
airflow
and
are
not
obstructed.
2.
Make
sure
the
room
temperature
is
within
the
recommended
range
(see
“Environment”
at
“Features
and
specifications”
on
page
3).
3.
Replace
the
power
supply.
138
IBM
System
x3850
Type
8864:
Problem
Determination
and
Service
Guide