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Chapter 7. Symptom-to-FRU index 97
Temperature related system shutdown
DASD checkout
Bus fault messages
System shutoff due to "X" V over voltage
(level-critical; system shutoff due to "X"
supply over voltage)
1. Check power supply connectors
2. Replace power supply
System shutoff due to "X" V under voltage
(level-critical system shutoff due to "X"
supply under voltage)
1. Check power supply connectors
2. Replace power supply
System shutoff due to VRM "X" over
voltage
1. Replace power supply
Message Action
System shutoff due to board over
temperature (level-critical;
board is over temperature)
1. Ensure system is being properly cooled, see “Temperature
checkout” on page 26.
2. Replace system board
System shutoff due to CPU "X" over
temperature (level-critical; CPU "X" is
over temperature)
1. Ensure system is being properly cooled, see “Temperature
checkout” on page 26.
2. Replace CPU "X"
System shutoff due to CPU "X" under
temperature (level-critical; CPU "X" is
under temperature)
1. Ambient temperature must be within normal operating
specifications, see “Features and specifications” on page 4.
2. Replace CPU "X"
System shutoff due to DASD temperature
(sensor X) (level-critical;
DASD area reported temperature outside
recommended operating range)
1. Ensure system is being properly cooled, see “Temperature
checkout” on page 26.
2. Replace SCSI Backplane
System shutoff due to high ambient
temperature (level-critical; high
ambient temperature)
1. Ambient temperature must be within normal operating
specifications, see “Features and specifications” on page 4.
2. Replace Front Panel Assembly
System shutoff due to system board under
temperature (level-critical; system
board is under temperature)
1. Ambient temperature must be within normal operating
specifications, see “Features and specifications” on page 4.
2. Replace System Board
Message Action
Hard drive "X" removal detected
(level-critical; hard drive "X" has been
removed)
1. Information only, take action as appropriate.
Message Action
Failure reading I2C device. Check devices
on bus 0.
1. Replace system board
Message Action