IBM 8478 Hardware Maintenance Manual - Page 126

Processor, board, ServeRAID, Undetermined, problems

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Processor board LEDs Table 16. LED Fan Memory CPU VRM Cause 1. Replace the fan assembly. 1. Replace the DIMM indicated by the lit DIMM error. 1. If a microprocessor LED is on for a microprocessor connector that has a terminator card installed instead of a microprocessor, the microprocessors are not installed in the correct order. See "Removing and installing a microprocessor" on page 63 for information about the correct order for installing microprocessors and VRMs. 2. Turn off the server, reseat the microprocessor, and restart the server. 3. Replace the microprocessor. 1. Turn off the server, reseat the VRM indicated by the lit VRM error LED, and restart the server. 2. Replace the VRM ServeRAID For ServeRAID error codes and procedures, refer to the Hardware Maintenance Manual for the particular RAID adapter in the system being serviced. Undetermined problems You are here because the diagnostic tests did not identify the failure, the Devices List is incorrect, or the system is inoperative. Note: A corrupt CMOS can cause undetermined problems. If power problems are suspected: 1. Power-off the computer. 2. Be sure the system is cabled correctly. 3. Remove or disconnect the following (one at a time) until you find the failure (power-on the computer and reconfigure each time). v Any external devices v Surge suppressor device (on the computer) v Modem, printer, mouse, or non-IBM devices v Each adapter v Drives 116 Hardware Maintenance Manual: xSeries 200

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Processor
board
LEDs
Table
16.
LED
Cause
Fan
1.
Replace
the
fan
assembly.
Memory
1.
Replace
the
DIMM
indicated
by
the
lit
DIMM
error.
CPU
1.
If
a
microprocessor
LED
is
on
for
a
microprocessor
connector
that
has
a
terminator
card
installed
instead
of
a
microprocessor,
the
microprocessors
are
not
installed
in
the
correct
order.
See
“Removing
and
installing
a
microprocessor”
on
page
63
for
information
about
the
correct
order
for
installing
microprocessors
and
VRMs.
2.
Turn
off
the
server,
reseat
the
microprocessor,
and
restart
the
server.
3.
Replace
the
microprocessor.
VRM
1.
Turn
off
the
server,
reseat
the
VRM
indicated
by
the
lit
VRM
error
LED,
and
restart
the
server.
2.
Replace
the
VRM
ServeRAID
For
ServeRAID
error
codes
and
procedures,
refer
to
the
Hardware
Maintenance
Manual
for
the
particular
RAID
adapter
in
the
system
being
serviced.
Undetermined
problems
You
are
here
because
the
diagnostic
tests
did
not
identify
the
failure,
the
Devices
List
is
incorrect,
or
the
system
is
inoperative.
Note:
A
corrupt
CMOS
can
cause
undetermined
problems.
If
power
problems
are
suspected:
1.
Power-off
the
computer.
2.
Be
sure
the
system
is
cabled
correctly.
3.
Remove
or
disconnect
the
following
(one
at
a
time)
until
you
find
the
failure
(power-on
the
computer
and
reconfigure
each
time).
v
Any
external
devices
v
Surge
suppressor
device
(on
the
computer)
v
Modem,
printer,
mouse,
or
non-IBM
devices
v
Each
adapter
v
Drives
116
Hardware
Maintenance
Manual:
xSeries
200