2.
Note
that
the
MEM
LED
on
the
light
path
diagnostics
panel
is
lit;
one
of
the
DIMMs
in
the
memory
cassette
is
defective.
3.
Open
the
cover
and
locate
the
lit
LED
beside
the
defective
DIMM.
Note:
The
lit
LEDs
light
the
connector
retaining
clips;
look
for
a
lit
retaining
clip
to
identify
a
failed
DIMM.
4.
Follow
the
instructions
in
“Installing
memory
modules”
on
page
9
to
remove
and
replace
the
DIMM.
Light
path
diagnostics
panel
The
following
illustration
shows
the
LEDs
on
the
Level
2
Light
Path
Diagnostics
panel,
which
is
on
the
side
of
the
operator
information
panel.
DASD NMI
PCI
EXP
LOG
PS2
CPU
FAN
VRM
OVER SPEC
TEMP
NR
SP
MEM
REMIND
PS1
For
more
information
about
the
Light
Path
Diagnostics
feature,
see
the
Hardware
Maintenance
Manual
and
Troubleshooting
Guide
.
The
following
table
describes
the
LEDs
on
the
Light
Path
Diagnostics
panel.
Light
Path
Diagnostics
panel
LED
Description
PS1
Power
supply
number
1
failure
PS2
Power
supply
number
2
failure
TEMP
System
over
temperature
condition
FAN
Hot-swap
fan
or
power-supply
fan
failure
VRM
VRM
failure
CPU
Microprocessor
failure
PCI
PCI
failure
MEM
Memory
failure
DASD
Hard
disk
drive
failure
NR
Nonredundant
power
mode
NMI
Nonmaskable
interrupt
SP
Remote
Supervisor
Adapter
II
failure
EXP
Attached
expansion
I/O
failure
LOG
See
event
log
or
Remote
Supervisor
Adapter
II
log
for
non-optimal
condition
information
OVER
SPEC
Power
supplies
being
overdriven
REMIND
button
Press
to
invoke
remind
mode
Notes:
1.
The
server
requires
replaceable
voltage
regulator
modules
(VRMs)
with
microprocessors
3
and
4.
2.
The
server
supports
a
maximum
of
two
power
supplies.
Chapter
6.
Solving
problems
57
Summary of Contents for 88625RX
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