IBM 8649 Hardware Maintenance Manual - Page 126

System, shutdown, Voltage, related, system, Temperature

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Page 126 highlights

Note: See "System replaceable units" on page 122 to determine which components should be replaced by a field service technician. Message Action 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) 3. Power cage assembly, if installed. System shutdown See the following tables when experiencing system shutdown related to voltage or temperature problems. Voltage related system shutdown Note: See "System replaceable units" on page 122 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) See "Power checkout" on page 29 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. 3. Power cage assembly, if installed. 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. 3. Power cage assembly, if installed. System shutoff due to VRM x over voltage Replace VRM x. System shutoff due to excessive (< 240 1. See "Power checkout" on page 29 VA) loading 2. Cycle ac on/off. Temperature related system shutdown Note: See "System replaceable units" on page 122 to determine which components should be replaced by a field service technician. Message Action System shutoff due to board over temperature (level-critical; board is over temperature) 1. Ensure that the system is being properly cooled; see "System reliability considerations" on page 33 2. Replace board. System shutoff due to CPU x over temperature (level-critical; CPU x is over temperature) 1. Ensure that the system is being properly cooled; see "System reliability considerations" on page 33 2. Replace CPU x. 116 IBM xSeries 225 Types 8649: Hardware Maintenance Manual and Troubleshooting Guide

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Note:
See
“System
replaceable
units”
on
page
122
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Message
Action
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.
3.
Power
cage
assembly,
if
installed.
System
shutdown
See
the
following
tables
when
experiencing
system
shutdown
related
to
voltage
or
temperature
problems.
Voltage
related
system
shutdown
Note:
See
“System
replaceable
units”
on
page
122
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)
See
“Power
checkout”
on
page
29
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.
3.
Power
cage
assembly,
if
installed.
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.
3.
Power
cage
assembly,
if
installed.
System
shutoff
due
to
VRM
x
over
voltage
Replace
VRM
x.
System
shutoff
due
to
excessive
(<
240
VA)
loading
1.
See
“Power
checkout”
on
page
29
2.
Cycle
ac
on/off.
Temperature
related
system
shutdown
Note:
See
“System
replaceable
units”
on
page
122
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Message
Action
System
shutoff
due
to
board
over
temperature
(level-critical;
board
is
over
temperature)
1.
Ensure
that
the
system
is
being
properly
cooled;
see
“System
reliability
considerations”
on
page
33
2.
Replace
board.
System
shutoff
due
to
CPU
x
over
temperature
(level-critical;
CPU
x
is
over
temperature)
1.
E
nsure
that
the
system
is
being
properly
cooled;
see
“System
reliability
considerations”
on
page
33
2.
Replace
CPU
x
.
116
IBM
xSeries
225
Types
8649:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide