HP ProLiant SL170s G6 Maintenance And Service Manual page 77

Table 11
POST error messages
Error code
655h
656h
657h
658h
659h
Error message
System Fan 3b Missing
System Fan 4a Missing
System Fan 4b Missing
System Fan 5a Missing
System Fan 5b Missing
Description/corrective action
If system fan3b is not installed or
failed, when one fan missing, this
message appears and other fans
run at high speed. When two fans
missing at the same time, this
appears and system shuts down in
minutes.
If system fan4a is not installed or
failed, when the system installed
non-redundant fan, this message
appears and system shuts down in
minutes. When system installed with
redundant fan, if only one fan
missing, this appears and the other
fans run at high speed. If two fans
missing, this appears and system
shuts down in minutes.
If system fan4b is not installed or
failed, when one fan missing, this
message appears and other fans
run at high speed. When two fans
missing at the same time, this
appears and system shuts down in
minutes.
If system fan5a is not installed or
failed, when the system installed
non-redundant fan, this message
appears and system shuts down in
minutes. When system installed with
redundant fan, if only one fan
missing, this appears and the other
fans run at high speed. If two fans
missing, this appears and system
shuts down in minutes.
If system fan5b is not installed or
failed, when one fan missing, this
message appears and other fans
run at high speed. When two fans
missing at the same time, this
appears and system shuts down in
minutes.
Diagnostic tools and setup utilities 77