IBM 8676 Hardware Maintenance Manual - Page 93

Installing

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Page 93 highlights

Note: See "System" on page 112 to determine which components should be replaced by a field service technician. Diagnostics panel LED FRU/action All LEDs off (Check System Error Log for error condition, then clear System Error Log when the problem is found.) 1. System Error Log is 75% full; clear the log. 2. PFA alert; check log for failure; clear PFA alert; remove ac power for at least 20 seconds, reconnect, then turn on the system. 3. Run Light Path Diagnostics. CPU (Microprocessor failure. The 1. Failing microprocessor LED next to the failing CPU is on.) 2. System board CNFG (The microprocessor or microprocessor VRM configuration is incorrect.) 1. Verify that microprocessors are compatible (see "Installing a microprocessor" on page 52). 2. If only one microprocessor is installed, make sure it is located in socket U82. 3. Verify that VRM is present if two microprocessors are installed. 4. Microprocessor. 5. VRM. VRM LED on (A voltage regulator 1. Failing VRM module (VRM) failed. The LED next to the failing VRM is on.) 2. System board MEM (System memory failed. The 1. Failing DIMM LED next to the failing DIMM is on.) 2. System board SP (Integrated system management processor (ISMP) failed.) 1. Unplug the server for 30 seconds, and then retry. 2. Reflash or update firmware for ISMP, BIOS. 3. System board. PS (Power supply failed.) 1. Verify that fan near power supply has clear air flow, rerouting cables if necessary. 2. Power supply. 3. System board. TEMP (Temperature exceeded a threshold level.) 1. Ambient temperature must be within normal operating specifications. See "Features and specifications" on page 2. 2. Ensure fans are operating correctly. 3. Examine System Error Log. a. System over recommended temperature b. Power switch assembly c. DASD over recommended temperature (DASD LED also on) 1) Overheating hard disk drive 2) DASD backplane 3) System board d. System over recommended temperature for microprocessor x (where x is 1 or 2) (CPU LED is also on) 1) Microprocessor x 2) System board e. System board over recommended temperature v System board FAN (A fan failed or is operating slowly.) 1. Check individual fan LEDs. 2. Replace respective fan. 3. System board. Chapter 6. Symptom-to-FRU index 83

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Note:
See
“System”
on
page
112
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Diagnostics
panel
LED
FRU/action
All
LEDs
off
(Check
System
Error
Log
for
error
condition,
then
clear
System
Error
Log
when
the
problem
is
found.)
1.
System
Error
Log
is
75%
full;
clear
the
log.
2.
PFA
alert;
check
log
for
failure;
clear
PFA
alert;
remove
ac
power
for
at
least
20
seconds,
reconnect,
then
turn
on
the
system.
3.
Run
Light
Path
Diagnostics.
CPU
(Microprocessor
failure.
The
LED
next
to
the
failing
CPU
is
on.)
1.
Failing
microprocessor
2.
System
board
CNFG
(The
microprocessor
or
microprocessor
VRM
configuration
is
incorrect.)
1.
Verify
that
microprocessors
are
compatible
(see
“Installing
a
microprocessor”
on
page
52).
2.
If
only
one
microprocessor
is
installed,
make
sure
it
is
located
in
socket
U82.
3.
Verify
that
VRM
is
present
if
two
microprocessors
are
installed.
4.
Microprocessor.
5.
VRM.
VRM
LED
on
(A
voltage
regulator
module
(VRM)
failed.
The
LED
next
to
the
failing
VRM
is
on.)
1.
Failing
VRM
2.
System
board
MEM
(System
memory
failed.
The
LED
next
to
the
failing
DIMM
is
on.)
1.
Failing
DIMM
2.
System
board
SP
(Integrated
system
management
processor
(ISMP)
failed.)
1.
Unplug
the
server
for
30
seconds,
and
then
retry.
2.
Reflash
or
update
firmware
for
ISMP,
BIOS.
3.
System
board.
PS
(Power
supply
failed.)
1.
Verify
that
fan
near
power
supply
has
clear
air
flow,
rerouting
cables
if
necessary.
2.
Power
supply.
3.
System
board.
TEMP
(Temperature
exceeded
a
threshold
level.)
1.
Ambient
temperature
must
be
within
normal
operating
specifications.
See
“Features
and
specifications”
on
page
2.
2.
Ensure
fans
are
operating
correctly.
3.
Examine
System
Error
Log.
a.
System
over
recommended
temperature
b.
Power
switch
assembly
c.
DASD
over
recommended
temperature
(DASD
LED
also
on)
1)
Overheating
hard
disk
drive
2)
DASD
backplane
3)
System
board
d.
System
over
recommended
temperature
for
microprocessor
x
(where
x
is
1
or
2)
(CPU
LED
is
also
on)
1)
Microprocessor
x
2)
System
board
e.
System
board
over
recommended
temperature
v
System
board
FAN
(A
fan
failed
or
is
operating
slowly.)
1.
Check
individual
fan
LEDs.
2.
Replace
respective
fan.
3.
System
board.
Chapter
6.
Symptom-to-FRU
index
83