IBM QS21 Service Guide - Page 83

Number, Status, Extended, results, Actions

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Table 6. BMC test results (continued) Test Extended Number Status results 166-902- Fail xxx The BMC indicates a failure in the memory card bus. Actions 1. Turn off the system and disconnect it from power. The system must be removed from AC power in order to reset the BMC. 2. After 45 seconds, reconnect the system to power and turn on the system. 3. Run the test again. 4. Make sure that the DSA Diagnostic code is at the latest level. The latest level DSA Diagnostic code can be found on the IBM Support Web site at http://www.ibm.com/ support/docview.wss?uid=psg1SERV-DSA/. 5. Check BMC firmware level and upgrade if necessary. The installed firmware level can be found in the DSA Diagnostic Event Log within the Firmware/VPD section for this component. The latest level firmware for this component can be found on the IBM Support Web site athttp://www.ibm.com/support/us/en/. 6. Run the test again. 7. If the reported memory size is the same as the installed memory size, complete the following steps. Otherwise, go to step 8. a. Turn off the system and disconnect it from power. b. Reseat all the system DIMMs within the system. c. Reconnect the system to power and turn on the system. d. Run the test again. 8. Turn off the system and disconnect it from power. 9. Remove all the system memory. 10. Install the minimum memory configuration for the system. See the QS21 Installation and User's Guide for supported memory configurations. 11. Reconnect the system to power and turn on the system. 12. Make sure that the reported memory size is the same as the installed memory size. 13. Run the test again. If the memory passes the test, one of the uninstalled memory cards or DIMMs is the failing component. 14. Repeat steps 8 through to 13 as necessary, using different memory cards and DIMMs, to isolate the failing component. It is important to change only one element each time in order to identify the specific cause of the error. 15. Replace the failing memory card or DIMM. Chapter 5. Diagnostics and troubleshooting 65

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Table
6.
BMC
test
results
(continued)
Test
Number
Status
Extended
results
Actions
166-902-
xxx
Fail
The
BMC
indicates
a
failure
in
the
memory
card
bus.
1.
Turn
off
the
system
and
disconnect
it
from
power.
The
system
must
be
removed
from
AC
power
in
order
to
reset
the
BMC.
2.
After
45
seconds,
reconnect
the
system
to
power
and
turn
on
the
system.
3.
Run
the
test
again.
4.
Make
sure
that
the
DSA
Diagnostic
code
is
at
the
latest
level.
The
latest
level
DSA
Diagnostic
code
can
be
found
on
the
IBM
Support
Web
site
at
support/docview.wss?uid=psg1SERV-DSA/.
5.
Check
BMC
firmware
level
and
upgrade
if
necessary.
The
installed
firmware
level
can
be
found
in
the
DSA
Diagnostic
Event
Log
within
the
Firmware/VPD
section
for
this
component.
The
latest
level
firmware
for
this
component
can
be
found
on
the
IBM
Support
Web
site
6.
Run
the
test
again.
7.
If
the
reported
memory
size
is
the
same
as
the
installed
memory
size,
complete
the
following
steps.
Otherwise,
go
to
step
8.
a.
Turn
off
the
system
and
disconnect
it
from
power.
b.
Reseat
all
the
system
DIMMs
within
the
system.
c.
Reconnect
the
system
to
power
and
turn
on
the
system.
d.
Run
the
test
again.
8.
Turn
off
the
system
and
disconnect
it
from
power.
9.
Remove
all
the
system
memory.
10.
Install
the
minimum
memory
configuration
for
the
system.
See
the
QS21
Installation
and
User's
Guide
for
supported
memory
configurations.
11.
Reconnect
the
system
to
power
and
turn
on
the
system.
12.
Make
sure
that
the
reported
memory
size
is
the
same
as
the
installed
memory
size.
13.
Run
the
test
again.
If
the
memory
passes
the
test,
one
of
the
uninstalled
memory
cards
or
DIMMs
is
the
failing
component.
14.
Repeat
steps
8
through
to
13
as
necessary,
using
different
memory
cards
and
DIMMs,
to
isolate
the
failing
component.
It
is
important
to
change
only
one
element
each
time
in
order
to
identify
the
specific
cause
of
the
error.
15.
Replace
the
failing
memory
card
or
DIMM.
Chapter
5.
Diagnostics
and
troubleshooting
65