IBM 88643RU Service Guide - Page 149

IBM 88643RU - System x3850 - 8864 Manual

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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 12V D Bus Fault 1. Reseat the following components: a. Microprocessor tray b. Memory cards 3 and 4 2. Replace the following components one at a time, in the order shown, restarting the server each time. a. Memory cards 3 and 4 b. (Trained service technician only) Power backplane c. (Trained service technician only) Microprocessor tray 12V E Bus Fault 1. Reseat the following components: a. Microprocessor tray b. Memory cards 1 and 2 2. Replace the following components one at a time, in the order shown, restarting the server each time. a. Memory cards 1 and 2 b. (Trained service technician only) Power backplane c. (Trained service technician only) Microprocessor tray 12V Planar Fault 1. Reseat the microprocessor tray. 2. Replace the power backplane. 12V Power Good Fault 1. Reseat the microprocessor tray. 2. Reseat the memory cards. 3. (Trained service technician only) Replace the power backplane. 4. (Trained service technician only) Replace the microprocessor tray. Application Posted Alert to ASM Information only Backplane Power Good Fault 1. Reseat the microprocessor tray. 2. Reseat the memory cards. 3. (Trained service technician only) Replace the power backplane. 4. (Trained service technician only) Replace the microprocessor tray. Board 2.5V Power Good Fault 1. Reseat the I/O board. 2. Replace the I/O board. Calgary Core 1.5V Power Good Fault 1. Reseat the I/O board. 2. Reseat the microprocessor tray. 3. (Trained service technician only) Replace the PCI board. CEC Card Power Good Fault 1. Reseat the microprocessor tray. 2. Reseat the I/O board. 3. (Trained service technician only) Replace the PCI board. Chapter 5. Diagnostics 133

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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
12V
D
Bus
Fault
1.
Reseat
the
following
components:
a.
Microprocessor
tray
b.
Memory
cards
3
and
4
2.
Replace
the
following
components
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time.
a.
Memory
cards
3
and
4
b.
(Trained
service
technician
only)
Power
backplane
c.
(Trained
service
technician
only)
Microprocessor
tray
12V
E
Bus
Fault
1.
Reseat
the
following
components:
a.
Microprocessor
tray
b.
Memory
cards
1
and
2
2.
Replace
the
following
components
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time.
a.
Memory
cards
1
and
2
b.
(Trained
service
technician
only)
Power
backplane
c.
(Trained
service
technician
only)
Microprocessor
tray
12V
Planar
Fault
1.
Reseat
the
microprocessor
tray.
2.
Replace
the
power
backplane.
12V
Power
Good
Fault
1.
Reseat
the
microprocessor
tray.
2.
Reseat
the
memory
cards.
3.
(Trained
service
technician
only)
Replace
the
power
backplane.
4.
(Trained
service
technician
only)
Replace
the
microprocessor
tray.
Application
Posted
Alert
to
ASM
Information
only
Backplane
Power
Good
Fault
1.
Reseat
the
microprocessor
tray.
2.
Reseat
the
memory
cards.
3.
(Trained
service
technician
only)
Replace
the
power
backplane.
4.
(Trained
service
technician
only)
Replace
the
microprocessor
tray.
Board
2.5V
Power
Good
Fault
1.
Reseat
the
I/O
board.
2.
Replace
the
I/O
board.
Calgary
Core
1.5V
Power
Good
Fault
1.
Reseat
the
I/O
board.
2.
Reseat
the
microprocessor
tray.
3.
(Trained
service
technician
only)
Replace
the
PCI
board.
CEC
Card
Power
Good
Fault
1.
Reseat
the
microprocessor
tray.
2.
Reseat
the
I/O
board.
3.
(Trained
service
technician
only)
Replace
the
PCI
board.
Chapter
5.
Diagnostics
133