IBM 88643RU Service Guide - Page 156

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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 QA Vcc PLL Power Good Fault 1. Reseat the microprocessor tray. 2. (Trained service technician only) Reseat the microprocessors. 3. Reseat the microprocessor VRMs, if present. 4. (Trained service technician only) Replace the microprocessor tray. QB Cache Power Good Fault 1. Reseat the microprocessor tray. 2. (Trained service technician only) Reseat the microprocessors. 3. Reseat the microprocessor VRMs, if present. 4. (Trained service technician only) Replace the microprocessor tray. QB Vcc PLL Power Good Fault 1. Reseat the microprocessor tray. 2. (Trained service technician only) Reseat the microprocessors. 3. Reseat the microprocessor VRMs, if present. 4. (Trained service technician only) Replace the microprocessor tray. Remote Login Successful. Login ID: Information only Resetting system due to an unrecoverable error Check the following light path diagnostics LEDs for faults: Note: Make sure you re-enable the memory in the Configuration/Setup Utility program. See, "Memory problems" on page 93 1. Microprocessors 2. DIMMs 3. Memory card 4. Microprocessor tray 5. I/O board assembly SAS Backplane Configuration is incorrect 1. Reseat the SAS power/I2C cable (from the SAS board to the PCIX board). 2. Replace the SAS power/I2C cable. 3. Replace the SAS backplane. 4. Replace PCIX board. SCSI 1.8V Power Good Fault 1. Reseat the I/O board. 2. Replace the I/O board. Single fan failure Replace any missing or failed fans or power supplies. SMI reported a Machine Check on Memory Card Note: Make sure you re-enable the memory in the Configuration/Setup Utility program. See, "Memory problems" on page 93 1. Reseat the memory card. 2. Replace the memory card. 140 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
QA
Vcc
PLL
Power
Good
Fault
1.
Reseat
the
microprocessor
tray.
2.
(Trained
service
technician
only)
Reseat
the
microprocessors.
3.
Reseat
the
microprocessor
VRMs,
if
present.
4.
(Trained
service
technician
only)
Replace
the
microprocessor
tray.
QB
Cache
Power
Good
Fault
1.
Reseat
the
microprocessor
tray.
2.
(Trained
service
technician
only)
Reseat
the
microprocessors.
3.
Reseat
the
microprocessor
VRMs,
if
present.
4.
(Trained
service
technician
only)
Replace
the
microprocessor
tray.
QB
Vcc
PLL
Power
Good
Fault
1.
Reseat
the
microprocessor
tray.
2.
(Trained
service
technician
only)
Reseat
the
microprocessors.
3.
Reseat
the
microprocessor
VRMs,
if
present.
4.
(Trained
service
technician
only)
Replace
the
microprocessor
tray.
Remote
Login
Successful.
Login
ID:
Information
only
Resetting
system
due
to
an
unrecoverable
error
Check
the
following
light
path
diagnostics
LEDs
for
faults:
Note:
Make
sure
you
re-enable
the
memory
in
the
Configuration/Setup
Utility
program.
See,
“Memory
problems”
on
page
93
1.
Microprocessors
2.
DIMMs
3.
Memory
card
4.
Microprocessor
tray
5.
I/O
board
assembly
SAS
Backplane
Configuration
is
incorrect
1.
Reseat
the
SAS
power/I2C
cable
(from
the
SAS
board
to
the
PCIX
board).
2.
Replace
the
SAS
power/I2C
cable.
3.
Replace
the
SAS
backplane.
4.
Replace
PCIX
board.
SCSI
1.8V
Power
Good
Fault
1.
Reseat
the
I/O
board.
2.
Replace
the
I/O
board.
Single
fan
failure
Replace
any
missing
or
failed
fans
or
power
supplies.
SMI
reported
a
Machine
Check
on
Memory
Card
Note:
Make
sure
you
re-enable
the
memory
in
the
Configuration/Setup
Utility
program.
See,
“Memory
problems”
on
page
93
1.
Reseat
the
memory
card.
2.
Replace
the
memory
card.
140
IBM
System
x3850
Type
8864:
Problem
Determination
and
Service
Guide