NEC Univerge sv8500 Manual page 2387

26.7 FAN Replacement
This section describes the procedure to replace FANs inside an SR-MGC(S).
* A failure of a cooling FAN rises the temperature inside of an SR-MGC(S), which greatly
influences the system. Please replace a cooling FAN every three years to avoid it, even
though the cooling FAN still works normally.
Replacement Procedure
FAN replacement means to replace the power unit itself on the rear panel of an SR-MGC(S).
STEP 1: Turn OFF the system.
STEP 2: Loosen the screws on the cover.
STEP 3: Remove the power unit.
PACT
VOL.2-2134
PA C T
P A C T
SR-MGC(S)
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required