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
8878
and
8879,”
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
Cache
1.8V
Power
Good
Fault
1.
Reseat
the
microprocessor
tray.
2.
(Trained
service
technician
only)
Reseat
the
microprocessors.
3.
Reseat
the
microprocessor
VRMs,
if
any
are
present.
4.
(Trained
service
technician
only)
Replace
the
microprocessor
tray.
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
any
are
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
any
are
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
any
are
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
94.
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.
142
IBM
System
x3950
Type
8878
and
System
x3950
E
Type
8879:
Problem
Determination
and
Service
Guide
Summary of Contents for System x3950 Type 8878
Page 2: ......
Page 185: ...Japanese Voluntary Control Council for Interference VCCI statement Appendix B Notices 169...
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Page 192: ...Part Number 31R1891 Printed in USA 1P P N 31R1891...