System Shutdown; Voltage Related System Shutdown; Temperature Related System Shutdown; System Reliability Considerations - IBM 8649 - Eserver xSeries 225 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
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

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
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)
System shutoff due to CPU x over
temperature (level-critical; CPU x is over
temperature)
116
IBM xSeries 225 Types 8649: Hardware Maintenance Manual and Troubleshooting Guide
Action
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.
3. Power cage assembly, if installed.
Action
See "Power checkout" on page 29
1. Check the power-supply connectors.
2. Power supply.
3. Power cage assembly, if installed.
1. Check the power-supply connectors.
2. Power supply.
3. Power cage assembly, if installed.
Replace VRM x.
1. See "Power checkout" on page 29
2. Cycle ac on/off.
Action
1. Ensure that the system is being properly cooled; see "System
reliability considerations" on page 33
2. Replace board.
1. Ensure that the system is being properly cooled; see "System
reliability considerations" on page 33
2. Replace CPU x.