IBM 8863 Service Guide - Page 103

Approaching

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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 8863," on page 93 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 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 40 1. Microprocessors 2. DIMMs 3. Memory card 4. Microprocessor tray 5. I/O board assembly 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 40 1. Reseat the memory card. 2. Replace the memory card. SMI reported a Machine Check on Memory Card, Dimm Note: Make sure you re-enable the memory in the Configuration/Setup Utility program. See, "Memory problems" on page 40 1. Reseat the DIMM. 2. Reseat the memory card. 3. Replace the DIMM. Software NMI Make sure that the system software is operating correctly and does not conflict with other software; the system software has created a software NMI. System Approaching Maximum Power Consumption 1. Install another power supply (if possible) and make sure that the ac power cords are correctly connected. 2. Remove devices that consume an extraordinary amount of power. 3. Replace the power backplane. Chapter 2. Diagnostics 87

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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
8863,”
on
page
93
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
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
40
1.
Microprocessors
2.
DIMMs
3.
Memory
card
4.
Microprocessor
tray
5.
I/O
board
assembly
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
40
1.
Reseat
the
memory
card.
2.
Replace
the
memory
card.
SMI
reported
a
Machine
Check
on
Memory
Card,
Dimm
Note:
Make
sure
you
re-enable
the
memory
in
the
Configuration/Setup
Utility
program.
See,
“Memory
problems”
on
page
40
1.
Reseat
the
DIMM.
2.
Reseat
the
memory
card.
3.
Replace
the
DIMM.
Software
NMI
Make
sure
that
the
system
software
is
operating
correctly
and
does
not
conflict
with
other
software;
the
system
software
has
created
a
software
NMI.
System
Approaching
Maximum
Power
Consumption
1.
Install
another
power
supply
(if
possible)
and
make
sure
that
the
ac
power
cords
are
correctly
connected.
2.
Remove
devices
that
consume
an
extraordinary
amount
of
power.
3.
Replace
the
power
backplane.
Chapter
2.
Diagnostics
87