IBM 8835 Hardware Maintenance Manual - Page 89

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In the following table, if the entry in the FRU/action column is a suggested action, perform that action; if it is the name of a component, reseat the component and replace it if necessary. The most likely cause of the symptom is listed first. Note: See "System" on page 94 to determine which components should be replaced by a field service technician. CD-ROM drive problems Symptom FRU/action CD-ROM drive is not recognized. 1. Verify that: v The IDE channel to which the CD-ROM drive is attached (primary or secondary) is enabled in the Configuration/Setup Utility program. v All cables and jumpers are installed correctly. v The correct device driver is installed for the CD-ROM drive. 2. Run CD-ROM drive diagnostics. 3. CD-ROM drive. Note: See "System" on page 94 to determine which components should be replaced by a field service technician. Expansion enclosure problems Symptom FRU/action The SCSI expansion enclosure used to work but does not work now. 1. Verify that: v The cables for all external SCSI options are connected correctly. v The last option in each SCSI chain, or the end of the SCSI cable, is terminated correctly. v Any external SCSI option is turned on. You must turn on an external SCSI option before turning on the server. 2. For more information, see your SCSI expansion enclosure documentation. Note: See "System" on page 94 to determine which components should be replaced by a field service technician. Hard disk drive problems Symptom FRU/action Not all drives are recognized by 1. Remove the first drive not recognized and try the hard disk drive the hard disk drive diagnostic diagnostic test again. test (Fixed Disk test). 2. If the remaining drives are recognized, replace the drive you removed with a new one. System stops responding during 1. Remove the hard disk drive being tested when the server stopped hard disk drive diagnostic test. responding and try the diagnostic test again. 2. If the hard disk drive diagnostic test runs successfully, replace the drive you removed with a new one. Note: See "System" on page 94 to determine which components should be replaced by a field service technician. General problems Symptom FRU/action Problems such as broken cover v Broken CRU/FRU locks or indicator LEDs not working Chapter 7. Symptom-to-FRU index 79

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In
the
following
table,
if
the
entry
in
the
FRU/action
column
is
a
suggested
action,
perform
that
action;
if
it
is
the
name
of
a
component,
reseat
the
component
and
replace
it
if
necessary.
The
most
likely
cause
of
the
symptom
is
listed
first.
Note:
See
“System”
on
page
94
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
CD-ROM
drive
problems
Symptom
FRU/action
CD-ROM
drive
is
not
recognized.
1.
Verify
that:
v
The
IDE
channel
to
which
the
CD-ROM
drive
is
attached
(primary
or
secondary)
is
enabled
in
the
Configuration/Setup
Utility
program.
v
All
cables
and
jumpers
are
installed
correctly.
v
The
correct
device
driver
is
installed
for
the
CD-ROM
drive.
2.
Run
CD-ROM
drive
diagnostics.
3.
CD-ROM
drive.
Note:
See
“System”
on
page
94
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Expansion
enclosure
problems
Symptom
FRU/action
The
SCSI
expansion
enclosure
used
to
work
but
does
not
work
now.
1.
Verify
that:
v
The
cables
for
all
external
SCSI
options
are
connected
correctly.
v
The
last
option
in
each
SCSI
chain,
or
the
end
of
the
SCSI
cable,
is
terminated
correctly.
v
Any
external
SCSI
option
is
turned
on.
You
must
turn
on
an
external
SCSI
option
before
turning
on
the
server.
2.
For
more
information,
see
your
SCSI
expansion
enclosure
documentation.
Note:
See
“System”
on
page
94
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Hard
disk
drive
problems
Symptom
FRU/action
Not
all
drives
are
recognized
by
the
hard
disk
drive
diagnostic
test
(Fixed
Disk
test).
1.
Remove
the
first
drive
not
recognized
and
try
the
hard
disk
drive
diagnostic
test
again.
2.
If
the
remaining
drives
are
recognized,
replace
the
drive
you
removed
with
a
new
one.
System
stops
responding
during
hard
disk
drive
diagnostic
test.
1.
Remove
the
hard
disk
drive
being
tested
when
the
server
stopped
responding
and
try
the
diagnostic
test
again.
2.
If
the
hard
disk
drive
diagnostic
test
runs
successfully,
replace
the
drive
you
removed
with
a
new
one.
Note:
See
“System”
on
page
94
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
General
problems
Symptom
FRU/action
Problems
such
as
broken
cover
locks
or
indicator
LEDs
not
working
v
Broken
CRU/FRU
Chapter
7.
Symptom-to-FRU
index
79