IBM 8840 Hardware Maintenance Manual - Page 112

Voltage, related, system, shutdown, Temperature

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Voltage related system shutdown Note: See "System" on page 108 to determine which components a field service technician should replace. 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 19. 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. 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. System shutoff due to VRM x over voltage Replace VRM x. System shutoff due to excessive (< 240 1. See "Power checkout" on page 19. VA) loading 2. Cycle ac on/off. Temperature related system shutdown Note: See "System" on page 108 to determine which components a field service technician should replace. Message Action System shutoff due to board over temperature (level-critical; board is over temperature) 1. Ensure that the server is being properly cooled; see "System reliability guidelines" on page 24. 2. Replace board. System shutoff due to CPU x over temperature (level-critical; CPU x is over temperature) 1. Ensure that the server is being properly cooled; see "System reliability guidelines" on page 24. 2. Replace CPU x. System shutoff due to CPU x under temperature (level-critical; CPU x is under temperature) Ambient temperature must be within normal operating specifications; see "Features and specifications" on page 3. System shutoff due to DASD temperature (sensor x) (level-critical; DASD area reported temperature outside recommended operating range) Ensure that the system is being properly cooled; see "System reliability guidelines" on page 24. System shutoff due to high ambient temperature (level-critical; high ambient temperature) Ambient temperature must be within normal operating specifications; see "Features and specifications" on page 3. System shutoff due to system board under temperature (level-critical; system board is under temperature) Ambient temperature must be within normal operating specifications; see "Features and specifications" on page 3. 102 xSeries 346 Types 8840 and 1880: Hardware Maintenance Manual and Troubleshooting Guide

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Voltage
related
system
shutdown
Note:
See
“System”
on
page
108
to
determine
which
components
a
field
service
technician
should
replace.
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
19.
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.
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.
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
19.
2.
Cycle
ac
on/off.
Temperature
related
system
shutdown
Note:
See
“System”
on
page
108
to
determine
which
components
a
field
service
technician
should
replace.
Message
Action
System
shutoff
due
to
board
over
temperature
(level-critical;
board
is
over
temperature)
1.
Ensure
that
the
server
is
being
properly
cooled
;
see
“System
reliability
guidelines”
on
page
24.
2.
Replace
board.
System
shutoff
due
to
CPU
x
over
temperature
(level-critical;
CPU
x
is
over
temperature)
1.
Ensure
that
the
server
is
being
properly
cooled
;
see
“System
reliability
guidelines”
on
page
24.
2.
Replace
CPU
x
.
System
shutoff
due
to
CPU
x
under
temperature
(level-critical;
CPU
x
is
under
temperature)
Ambient
temperature
must
be
within
normal
operating
specifications
;
see
“Features
and
specifications”
on
page
3.
System
shutoff
due
to
DASD
temperature
(sensor
x
)
(level-critical;
DASD
area
reported
temperature
outside
recommended
operating
range)
Ensure
that
the
system
is
being
properly
cooled
;
see
“System
reliability
guidelines”
on
page
24.
System
shutoff
due
to
high
ambient
temperature
(level-critical;
high
ambient
temperature)
Ambient
temperature
must
be
within
normal
operating
specifications
;
see
“Features
and
specifications”
on
page
3.
System
shutoff
due
to
system
board
under
temperature
(level-critical;
system
board
is
under
temperature)
Ambient
temperature
must
be
within
normal
operating
specifications
;
see
“Features
and
specifications”
on
page
3.
102
xSeries
346
Types
8840
and
1880:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide