IBM 8480 Hardware Maintenance Manual - Page 99

FRU/action

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Page 99 highlights

Note: See "System" on page 112 to determine which components should be replaced by a field service technician. Diagnostics panel LED FRU/action SERVICE PROCESSOR BUS LED. 1. Unplug the server for 30 seconds, and then retry. 2. Reflash or update firmware for ISMP, BIOS. 3. System board. POWER SUPPLY 1 LED on. 1. Check the dc good LED on power supply 1. If it is off, replace power supply 1. 2. Power cage assembly, if installed. POWER SUPPLY 2 LED on. 1. Check the dc good LED on power supply 2. If it is off, replace power supply 2. 2. Power cage assembly, if installed. NONREDUNDANT LED on. 1. Check the PS1 and PS2 LEDs and replace any indicated power supply. 2. Install an additional power supply or remove optional devices from the server. NMI LED on. 1. Restart the server. 2. Check the System Error Log. TEMPERATURE LED on. 1. Ambient temperature must be within normal operating specifications. See "Features and specifications" on page 3. 2. Ensure fans are operating correctly. 3. Examine System Error Log. a. System over recommended temperature v Information LED panel b. DASD over recommended temperature (DASD LED also on) 1) Overheating hard drive 2) DASD backplane c. System over recommended temperature for CPU x (where x is 1 or 2) (CPU LED is also on) 1) CPU x 2) System board 4. If the CPU LED on the diagnostics panel is also lit, one of the microprocessors has caused the error. FAN LED on 1. Check individual fan LEDs. 2. Replace respective fan. 3. Fan cable. 4. System board. 5. Power cage assembly, if installed. Chapter 6. Symptom-to-FRU index 89

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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
SERVICE
PROCESSOR
BUS
LED.
1.
Unplug
the
server
for
30
seconds,
and
then
retry.
2.
Reflash
or
update
firmware
for
ISMP,
BIOS.
3.
System
board.
POWER
SUPPLY
1
LED
on.
1.
Check
the
dc
good
LED
on
power
supply
1.
If
it
is
off,
replace
power
supply
1.
2.
Power
cage
assembly,
if
installed.
POWER
SUPPLY
2
LED
on.
1.
Check
the
dc
good
LED
on
power
supply
2.
If
it
is
off,
replace
power
supply
2.
2.
Power
cage
assembly,
if
installed.
NONREDUNDANT
LED
on.
1.
Check
the
PS1
and
PS2
LEDs
and
replace
any
indicated
power
supply.
2.
Install
an
additional
power
supply
or
remove
optional
devices
from
the
server.
NMI
LED
on.
1.
Restart
the
server.
2.
Check
the
System
Error
Log.
TEMPERATURE
LED
on.
1.
Ambient
temperature
must
be
within
normal
operating
specifications.
See
“Features
and
specifications”
on
page
3.
2.
Ensure
fans
are
operating
correctly.
3.
Examine
System
Error
Log.
a.
System
over
recommended
temperature
v
Information
LED
panel
b.
DASD
over
recommended
temperature
(DASD
LED
also
on)
1)
Overheating
hard
drive
2)
DASD
backplane
c.
System
over
recommended
temperature
for
CPU
x
(where
x
is
1
or
2)
(CPU
LED
is
also
on)
1)
CPU
x
2)
System
board
4.
If
the
CPU
LED
on
the
diagnostics
panel
is
also
lit,
one
of
the
microprocessors
has
caused
the
error.
FAN
LED
on
1.
Check
individual
fan
LEDs.
2.
Replace
respective
fan.
3.
Fan
cable.
4.
System
board.
5.
Power
cage
assembly,
if
installed.
Chapter
6.
Symptom-to-FRU
index
89