IBM JS20 Hardware Maintenance Manual - Page 166

Undetermined, problems

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Undetermined problems When troubleshooting a problem with the JS20 Type 8842, you must determine whether the problem is a blade server problem or a problem with the BladeCenter unit. v If the BladeCenter unit contains more than one blade server and only one of the blade servers exhibits the problem, it is likely that it is a blade server problem. v If all of the blade servers exhibit the same symptom, it is probably a BladeCenter unit problem; for more information, see the IBM BladeCenter Hardware Maintenance Manual and Troubleshooting Guide. Check the LEDs on all power supplies of the BladeCenter unit where the blade server is installed. If the LEDs indicate the power supplies are working correctly, and reseating the blade server does not correct the problem, it is probably a blade server problem. Complete the following steps: 1. Check the front panel: a. Check that the front panel is connected to the system board (see "Opening the blade server cover" on page 74. b. If there is no lit power LED (flashing or solid) on the front panel, move the JS20 server to another slot in the BladeCenter unit and check the power LED. 1) If the power LED is lit (flashing or solid), see the BladeCenter Hardware Maintenance Manual and Troubleshooting Guide and follow the problem determination procedure in that document. 2) If the power LED is not lit, replace the front panel; then, try to turn on the blade server from the BladeCenter management-module Web interface (see the BladeCenter documentation for more information). 3) If this does not correct the problem, continue with step 2a. 2. Check the adapter (if installed): a. Turn off the blade server, remove the blade server from the BladeCenter unit, and open the cover. b. Remove the adapter. c. Close the cover, reinstall the JS20 server, turn it on, and watch for one of the following: 1) If an error was recorded in the BladeCenter management-module event log and the Linux Syslog (platform log), look for the error symptom in this chapter and take the recommended action. 2) If the server starts up and displays the AIX or Linux prompt, then the adapter is faulty and should be replaced. If AIX or Linux is the operating system, perform "Running the standalone diagnostics from CD-ROM" on page 25. For Linux, also check the Linux Syslog (platform log); look for the error symptom in this chapter and take the recommended action. Note: Turn on the server and start the Serial Over Lan for the blade server to be tested; then, check for the following responses: a) Progress codes displayed on the console b) AIX or Linux login prompt 3) If this does not correct the problem, continue with step 3a on page 157. 3. Check the drives: 156 BladeCenter JS20 Type 8842: Hardware Maintenance Manual and Troubleshooting Guide

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Undetermined
problems
When
troubleshooting
a
problem
with
the
JS20
Type
8842,
you
must
determine
whether
the
problem
is
a
blade
server
problem
or
a
problem
with
the
BladeCenter
unit.
v
If
the
BladeCenter
unit
contains
more
than
one
blade
server
and
only
one
of
the
blade
servers
exhibits
the
problem,
it
is
likely
that
it
is
a
blade
server
problem.
v
If
all
of
the
blade
servers
exhibit
the
same
symptom,
it
is
probably
a
BladeCenter
unit
problem;
for
more
information,
see
the
IBM
BladeCenter
Hardware
Maintenance
Manual
and
Troubleshooting
Guide
.
Check
the
LEDs
on
all
power
supplies
of
the
BladeCenter
unit
where
the
blade
server
is
installed.
If
the
LEDs
indicate
the
power
supplies
are
working
correctly,
and
reseating
the
blade
server
does
not
correct
the
problem,
it
is
probably
a
blade
server
problem.
Complete
the
following
steps:
1.
Check
the
front
panel:
a.
Check
that
the
front
panel
is
connected
to
the
system
board
(see
“Opening
the
blade
server
cover”
on
page
74.
b.
If
there
is
no
lit
power
LED
(flashing
or
solid)
on
the
front
panel,
move
the
JS20
server
to
another
slot
in
the
BladeCenter
unit
and
check
the
power
LED.
1)
If
the
power
LED
is
lit
(flashing
or
solid),
see
the
BladeCenter
Hardware
Maintenance
Manual
and
Troubleshooting
Guide
and
follow
the
problem
determination
procedure
in
that
document.
2)
If
the
power
LED
is
not
lit,
replace
the
front
panel;
then,
try
to
turn
on
the
blade
server
from
the
BladeCenter
management-module
Web
interface
(see
the
BladeCenter
documentation
for
more
information).
3)
If
this
does
not
correct
the
problem,
continue
with
step
2a.
2.
Check
the
adapter
(if
installed):
a.
Turn
off
the
blade
server,
remove
the
blade
server
from
the
BladeCenter
unit,
and
open
the
cover.
b.
Remove
the
adapter.
c.
Close
the
cover,
reinstall
the
JS20
server,
turn
it
on,
and
watch
for
one
of
the
following:
1)
If
an
error
was
recorded
in
the
BladeCenter
management-module
event
log
and
the
Linux
Syslog
(platform
log),
look
for
the
error
symptom
in
this
chapter
and
take
the
recommended
action.
2)
If
the
server
starts
up
and
displays
the
AIX
or
Linux
prompt,
then
the
adapter
is
faulty
and
should
be
replaced.
If
AIX
or
Linux
is
the
operating
system,
perform
“Running
the
standalone
diagnostics
from
CD-ROM”
on
page
25.
For
Linux,
also
check
the
Linux
Syslog
(platform
log);
look
for
the
error
symptom
in
this
chapter
and
take
the
recommended
action.
Note:
Turn
on
the
server
and
start
the
Serial
Over
Lan
for
the
blade
server
to
be
tested;
then,
check
for
the
following
responses:
a)
Progress
codes
displayed
on
the
console
b)
AIX
or
Linux
login
prompt
3)
If
this
does
not
correct
the
problem,
continue
with
step
3a
on
page
157.
3.
Check
the
drives:
156
BladeCenter
JS20
Type
8842:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide