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).

PZ-M369

NEC

FAN BOX

ATTENTION

Contents

Static Sensitive

Handling

Precautions Required

PBX

NEAX 2400 IMS

Remove theFront Cover and pull out the FANU.

Front Cover

1 Turn PWR SW OFF

 

OFF

These dotted squares indicate the fans.

 

They reside in the back side of PZ-M369.

PZ-M369

TH0

TH1

TH2

FAN

 

 

 

ON

 

 

 

OFF

 

 

 

Auto

TALM0 TALM1

FC0 FC1 FC0FC2

3 Disconnect the FAN cable

2 Remove this FAN fuse.

3 Disconnect the FAN cable(s) and

from this connector.

 

the connector(s) here used for the

 

 

FAN to be replaced.

Figure 4-22 Preparation for FANU Replacement (Fans in Fan Box)

NDA-24300CHAPTER 4

Page 299

Issue 1

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NEC NDA-24300 manual Replacement Procedure Fanu in Fan Box, Off