IBM 88643RU Service Guide - Page 111

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v Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved. v See Chapter 3, "Parts listing, Type 8864," on page 23 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU). v If an action step is preceded by "(Trained service technician only)", that step must be performed only by a trained service technician. Symptom Action Testing the monitor 1. Make sure the monitor cables are firmly connected. 2. Try using a different monitor on the server, or try using the monitor being tested on a different server. 3. Run the diagnostic programs. If the monitor passes the diagnostic programs, the problem might be a video device driver. 4. Reseat the following components: a. Remote Supervisor Adapter II SlimLine, if present b. I/O board 5. Replace the components listed in step 4 one at a time, in the order shown, restarting the server each time. The screen is blank. 1. If the server is attached to a KVM switch, make sure the switch is working correctly by plugging the monitor cable directly into the correct port on the rear of the server, thus bypassing the KVM switch. 2. Make sure that: v The server is powered on. If there is no power to the server, see "Power problems" on page 98. v The monitor cables are connected correctly. v The monitor is turned on and the brightness and contrast controls are adjusted correctly. v Make sure that no beep codes sounded when the server is turned on. Important: In some memory configurations, the 3-3-3 beep code might sound during POST, followed by a blank monitor screen. If this occurs do the following: a. Turn off the server. b. Move the memory card to a different slot. c. Turn on the server. Note: BIOS will see a new configuration and automatically re-enable the memory slots the were previously disabled. d. Turn off the server. e. Return the memory card to the slot it was removed from in 2b. f. Turn on the server. 3. Make sure that the correct server is controlling the monitor, if applicable. 4. Make sure that damaged BIOS code is not affecting the video; see "Recovering from a BIOS update failure" on page 129. 5. Observe the checkpoint LEDs on the I/O board; if the codes are changing, go to the next step. if the codes are not changing, see "(Trained service technicians only) Checkpoint codes" on page 88. 6. See "Solving undetermined problems" on page 156. Chapter 5. Diagnostics 95

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v
Follow
the
suggested
actions
in
the
order
in
which
they
are
listed
in
the
Action
column
until
the
problem
is
solved.
v
See
Chapter
3,
“Parts
listing,
Type
8864,”
on
page
23
to
determine
which
components
are
customer
replaceable
units
(CRU)
and
which
components
are
field
replaceable
units
(FRU).
v
If
an
action
step
is
preceded
by
“(Trained
service
technician
only)”,
that
step
must
be
performed
only
by
a
trained
service
technician.
Symptom
Action
Testing
the
monitor
1.
Make
sure
the
monitor
cables
are
firmly
connected.
2.
Try
using
a
different
monitor
on
the
server,
or
try
using
the
monitor
being
tested
on
a
different
server.
3.
Run
the
diagnostic
programs.
If
the
monitor
passes
the
diagnostic
programs,
the
problem
might
be
a
video
device
driver.
4.
Reseat
the
following
components:
a.
Remote
Supervisor
Adapter
II
SlimLine,
if
present
b.
I/O
board
5.
Replace
the
components
listed
in
step
4
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time.
The
screen
is
blank.
1.
If
the
server
is
attached
to
a
KVM
switch,
make
sure
the
switch
is
working
correctly
by
plugging
the
monitor
cable
directly
into
the
correct
port
on
the
rear
of
the
server,
thus
bypassing
the
KVM
switch.
2.
Make
sure
that:
v
The
server
is
powered
on.
If
there
is
no
power
to
the
server,
see
“Power
problems”
on
page
98.
v
The
monitor
cables
are
connected
correctly.
v
The
monitor
is
turned
on
and
the
brightness
and
contrast
controls
are
adjusted
correctly.
v
Make
sure
that
no
beep
codes
sounded
when
the
server
is
turned
on.
Important:
In
some
memory
configurations,
the
3-3-3
beep
code
might
sound
during
POST,
followed
by
a
blank
monitor
screen.
If
this
occurs
do
the
following:
a.
Turn
off
the
server.
b.
Move
the
memory
card
to
a
different
slot.
c.
Turn
on
the
server.
Note:
BIOS
will
see
a
new
configuration
and
automatically
re-enable
the
memory
slots
the
were
previously
disabled.
d.
Turn
off
the
server.
e.
Return
the
memory
card
to
the
slot
it
was
removed
from
in
2b.
f.
Turn
on
the
server.
3.
Make
sure
that
the
correct
server
is
controlling
the
monitor,
if
applicable.
4.
Make
sure
that
damaged
BIOS
code
is
not
affecting
the
video;
see
“Recovering
from
a
BIOS
update
failure”
on
page
129.
5.
Observe
the
checkpoint
LEDs
on
the
I/O
board;
if
the
codes
are
changing,
go
to
the
next
step.
if
the
codes
are
not
changing,
see
“(Trained
service
technicians
only)
Checkpoint
codes”
on
page
88.
6.
See
“Solving
undetermined
problems”
on
page
156.
Chapter
5.
Diagnostics
95