System Shutdown; Voltage Related System Shutdown; Temperature Related System Shutdown - IBM 88371RU Maintenance And Troubleshooting Manual

Note: See "System replaceable units" on page 122 to determine which components should be replaced by a field
service technician.
Message
Power supply x 3.3 V fault (level-critical;
3.3 V power supply x had an error)
Power supply x 5 V fault (level-critical; 5 V
power supply x had an error)
System running non-redundant power
(level-noncritical; system does not have
redundant power)
System under recommended voltage for x
(level-warning; indicated voltage supply
under nominal value; value for x can be +12,
-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 replaceable units" on page 122 to determine which components should be replaced by a field
service technician.
Message
System shutoff due to x current over
max value (level-critical; system drawing
too much current on voltage x bus)
System shutoff due to x V over voltage
(level-critical; system shutoff due to x
supply over voltage)
System shutoff due to x V under voltage
(level-critical; system shutoff due to x
supply under voltage)
System shutoff due to VRM x over
voltage
System shutoff due to excessive (< 240
VA) loading

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
System shutoff due to board over
temperature
(level-critical; board is over temperature)
FRU/action
v See "Power checkout" on page 79.
v See "Power checkout" on page 79.
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.
1. Check connections to the power subsystem.
2. Power supply.
FRU/action
v See "Power checkout" on page 79.
1. Check the power-supply connectors
2. Power supply.
1. Check the power-supply connectors
2. Power supply.
v Replace VRM x.
1. See "Power checkout" on page 79.
2. Cycle ac on/off.
FRU/action
1. Ensure that the system is being properly cooled; see "System
reliability considerations" on page 15.
2. Replace board.
Chapter 6. Symptom-to-FRU index
117