IBM JS20 User Guide - Page 95

Table, Light, diagnostics, continued - vrm

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Table 2. Light path diagnostics (continued) Lit blade-error LED Cause Temperature error The system temperature has exceeded a threshold level. Action 1. Check to see if a blower on the BladeCenter unit has failed. If it has, replace the blower. 2. Make sure the room temperature is not too high. (See "Features and specifications" on page 6 for temperature information.) IDE bus x error The IDE bus indicated by the error LED has failed. If the problem remains, have the blade server serviced. 1. Reseat or replace the hard disk drive (or other IDE device) on IDE bus x. 2. If the LED stays on, replace the system-board assembly as described in the Hardware Maintenance and Troubleshooting Guide. 3. Replace the blade server cover, reinsert the blade server in the BladeCenter unit, and then restart the server. Processor x phase-locked loop (PLL) error VRM error The microprocessor circuit is defective, and cannot process the required signals. The integrated VRM on the system board has failed. If the problem remains, have the blade server serviced. Attention: To help ensure proper cooling and system reliability, two microprocessors and two heat sinks are required on the system board in the blade server at all times. The microprocessors and heat sinks on the system board are not replaceable. Therefore, if a microprocessor or heat sink becomes defective, you must replace the system-board assembly. Contact a service support representative for assistance. 1. To verify the error, replace the blade-server cover, reinsert the blade server in the BladeCenter unit, and then restart the server. 2. If the LED stays lit, replace the system-board assembly. Contact a service support representative for assistance. Chapter 7. Solving problems 83

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Table
2.
Light
path
diagnostics
(continued)
Lit
blade-error
LED
Cause
Action
Temperature
error
The
system
temperature
has
exceeded
a
threshold
level.
1.
Check
to
see
if
a
blower
on
the
BladeCenter
unit
has
failed.
If
it
has,
replace
the
blower.
2.
Make
sure
the
room
temperature
is
not
too
high.
(See
“Features
and
specifications”
on
page
6
for
temperature
information.)
If
the
problem
remains,
have
the
blade
server
serviced.
IDE
bus
x
error
The
IDE
bus
indicated
by
the
error
LED
has
failed.
1.
Reseat
or
replace
the
hard
disk
drive
(or
other
IDE
device)
on
IDE
bus
x
.
2.
If
the
LED
stays
on,
replace
the
system-board
assembly
as
described
in
the
Hardware
Maintenance
and
Troubleshooting
Guide.
3.
Replace
the
blade
server
cover,
reinsert
the
blade
server
in
the
BladeCenter
unit,
and
then
restart
the
server.
If
the
problem
remains,
have
the
blade
server
serviced.
Processor
x
phase-locked
loop
(PLL)
error
The
microprocessor
circuit
is
defective,
and
cannot
process
the
required
signals.
Attention:
To
help
ensure
proper
cooling
and
system
reliability,
two
microprocessors
and
two
heat
sinks
are
required
on
the
system
board
in
the
blade
server
at
all
times.
The
microprocessors
and
heat
sinks
on
the
system
board
are
not
replaceable.
Therefore,
if
a
microprocessor
or
heat
sink
becomes
defective,
you
must
replace
the
system-board
assembly.
Contact
a
service
support
representative
for
assistance.
VRM
error
The
integrated
VRM
on
the
system
board
has
failed.
1.
To
verify
the
error,
replace
the
blade-server
cover,
reinsert
the
blade
server
in
the
BladeCenter
unit,
and
then
restart
the
server.
2.
If
the
LED
stays
lit,
replace
the
system-board
assembly.
Contact
a
service
support
representative
for
assistance.
Chapter
7.
Solving
problems
83