IBM 8649 - Eserver xSeries 225, Maintenance And Troubleshooting Manual

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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 .
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IBM xSeries 225 Types 8649: Hardware Maintenance Manual and Troubleshooting Guide