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Hardware Maintenance Manual: xSeries 250
 
 
Temperature error messages
Fan error messages
Message
Action
DASD "X" Over Temperature
 (level-
critical; Direct Access Storage Device bay 
"X" was over temperature)
1.
Ensure system is being properly cooled
DASD Over recommended Temperature
 
(sensor X) (level-warning; the DASD 
backplane had an over temperature 
condition)
1.
Ensure system is being properly cooled
DASD under recommended temperature
 
(sensor X)  level-warning; the DASD 
backplane had an under temperature 
condition)
1.
Ambient temperature must be within 
normal operating specifications
; (see 
Power Supply "X" Temperature Fault
 
(level-critical; power supply "x" had over 
temperature condition)
1.
Ensure system is being properly cooled;  
see “Temperature checkout” on page 32.
2.
Replace Power Supply "X"
System board is over recommended 
temperature
 (level-warning; system board 
is over recommended temperature)
1.
Ensure system is being properly cooled;
 
2.
Replace system board
System board is under recommended 
temperature
 (level-warning; system board 
is under recommended temperature)
1.
Ambient temperature must be within 
normal operating specifications
; (see 
System over temperature for CPU "X"
                               
(level-warning; CPU "X" reporting over 
temperature condition)
1.
Ensure system is being properly cooled;
 
2.
Replace CPU "X".
3.
Replace Processor/PCI Board.
System under recommended CPU "X" 
temperature
 (level-warning; system 
reporting under temperature condition for 
CPU "X")
1.
Ambient temperature must be within 
normal operating specifications
; (see 
2.
Replace CPU "X".
3.
Replace Processor/PCI Board.
Message
Action
Fan "X" failure
 (level-critical; fan "X" had a 
failure)
1.
Check connections to fan "X"
2.
Replace fan "X"
Fan "X" fault
 (level-critical; fan "X" beyond 
recommended RPM range)
1.
Check connections to fan "X"
2.
Replace fan "X"