NEC Univerge sv8500 Manual page 1609

Step3: Remove the FAN connector; the screw; the FAN.
Note: If you are replacing FANs as the MG-SIP128 [MG-128SIPMGG] remains on, removing both FANs
may generate heat inside, resulting in system failure. Be sure to replace one by one, but not at the
same time.
Step4: Attach new FANs: perform the opposite procedure of removing.
Note:
When attaching, pay attention to the direction of a FAN. The label on a FAN must face toward the
outside of an MG-SIP128 [MG-128SIPMGG]. (See the following figure.)
[Test After Attaching]
Check if the replaced FANs work properly.
• If either of FANs does not work properly, check the cabling.
Attach the FAN in the direction as described below.
Outside
FAN Cover
Overhead view
VOL.2-1356
MG-SIP128 [MG-128SIPMGG]
CAUTION!!
Inside
MG-SIP128