IBM 8676 Hardware Maintenance Manual - Page 117

System, shutdown, Voltage, related, system

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Page 117 highlights

Note: See "System" on page 112 to determine which components should be replaced by a field service technician. Message Action Power supply x fan fault (level-critical; fan v Replace power supply x. fault in power supply x) Power supply x 12 V fault (level-critical; overcurrent condition detected) v See "Power checkout" on page 28. Power supply x 3.3 V fault (level-critical; 3.3 V power supply x had an error) v See "Power checkout" on page 28. Power supply x 5 V fault (level-critical; 5 V v See "Power checkout" on page 28. power supply x had an error) System running non-redundant power (level-noncritical; system does not have redundant power) 1. Add another power supply. 2. Remove options from system. 3. System can continue to operate without redundancy protection if steps1 and 2 are not followed. System under recommended voltage for x 1. Check connections to the power subsystem. (level-warning; indicated voltage supply under nominal value; value for x can be +12, 2. Power supply. -12, or +5) System shutdown Refer to the following tables when experiencing system shutdown related to voltage or temperature problems. Voltage related system shutdown Note: See "System" on page 112 to determine which components should be replaced by a field service technician. Message Action System shutoff due to x current over max value (level-critical; system drawing too much current on voltage x bus) v See "Power checkout" on page 28. System shutoff due to x V over voltage (level-critical; system shutoff due to x supply over voltage) 1. Check the power-supply connectors 2. Power supply. System shutoff due to x V under voltage 1. Check the power-supply connectors. (level-critical system shutoff due to x supply under voltage) 2. Power supply. System shutoff due to VRM x over voltage v Replace VRM x. System shutoff due to excessive (< 240 1. See "Power checkout" on page 28. VA) loading 2. Cycle ac on/off. Chapter 6. Symptom-to-FRU index 107

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Note:
See
“System”
on
page
112
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Message
Action
Power
supply
x
fan
fault
(level-critical;
fan
fault
in
power
supply
x
)
v
Replace
power
supply
x.
Power
supply
x
12
V
fault
(level-critical;
overcurrent
condition
detected)
v
See
“Power
checkout”
on
page
28.
Power
supply
x
3.3
V
fault
(level-critical;
3.3
V
power
supply
x
had
an
error)
v
See
“Power
checkout”
on
page
28.
Power
supply
x
5
V
fault
(level-critical;
5
V
power
supply
x
had
an
error)
v
See
“Power
checkout”
on
page
28.
System
running
non-redundant
power
(level-noncritical;
system
does
not
have
redundant
power)
1.
Add
another
power
supply.
2.
Remove
options
from
system.
3.
System
can
continue
to
operate
without
redundancy
protection
if
steps1
and
2
are
not
followed.
System
under
recommended
voltage
for
x
(level-warning;
indicated
voltage
supply
under
nominal
value;
value
for
x
can
be
+12,
-12,
or
+5)
1.
Check
connections
to
the
power
subsystem.
2.
Power
supply.
System
shutdown
Refer
to
the
following
tables
when
experiencing
system
shutdown
related
to
voltage
or
temperature
problems.
Voltage
related
system
shutdown
Note:
See
“System”
on
page
112
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Message
Action
System
shutoff
due
to
x
current
over
max
value
(level-critical;
system
drawing
too
much
current
on
voltage
x
bus)
v
See
“Power
checkout”
on
page
28.
System
shutoff
due
to
x
V
over
voltage
(level-critical;
system
shutoff
due
to
x
supply
over
voltage)
1.
Check
the
power-supply
connectors
2.
Power
supply.
System
shutoff
due
to
x
V
under
voltage
(level-critical
system
shutoff
due
to
x
supply
under
voltage)
1.
Check
the
power-supply
connectors.
2.
Power
supply.
System
shutoff
due
to
VRM
x
over
voltage
v
Replace
VRM
x
.
System
shutoff
due
to
excessive
(<
240
VA)
loading
1.
See
“Power
checkout”
on
page
28.
2.
Cycle
ac
on/off.
Chapter
6.
Symptom-to-FRU
index
107