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NDA-24300 CHAPTER 4
Page 299
Issue 1
UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
Replacement Procedure: FANU in Fan Box
When the FANU is mounted in the fan box, perform the following replacement:
STEP 1 Remove the front cover of the fan box. Then, extract the FANU.
STEP 2 Turn OFF the PWR SW on the PZ-M369. (Refer to Figure 4-22.)
STEP 3 Remove the fan fuse (5A) on the PZ-M369.
STEP 4 Remove the fan cables from the fan connector and the connector(s) corresponding to the fan to
be replaced (for example, when replacing FAN #1, disconnect the FC0 connector together with
the fan connector).
Figure 4-22 Preparation for FANU Replacement (Fans in Fan Box)
NEC
NEAX 2400 IMS
PBX
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
FAN BOX
Front Cover
Remove the Front Cover
and pull out the FANU.
PZ-M369
TH2 FAN
TALM1 TALM0
TH1 TH0
FC0 FC1 FC2
These dotted squares indicate the fans.
They reside in the back side of PZ-M369.
PZ-M369
ON
OFF
Auto
FC0 FC1 FC2
OFF
1 Turn PWR SW OFF
3 Disconnect the FAN cable(s) and
the connector(s) here used for the
FAN to be replaced.
3 Disconnect the FAN cable
from this connector.
2 Remove this FAN fuse.