NEC Express 5800 User Manual page 194

Hardware
4. Pull out the server from the rack slowly and gently.
Pull out the server until it clicks and latches
5. Check the cooling fan to be replaced.
6. Push the lock levers inward on right and left end of the cooling fan and unlock them.
IMPORTANT:
Conduct the work carefully as the cooling fan is replaced during
operation (power-on status). Forcing to pull out the server may cause
the cable to unplug or to be damaged.
IMPORTANT:
Confirm that the Status LED of cooling fan in the location indicating a
failure is lighting in amber.
Hold with thumbs.
Unlock with index
fingers.
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