NEC NDA-24300 manual Extraction of CPR from LPM

UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE

PBX

LPM

.....

5A

.....

SLOT No. 0 1 2 3 4 5 6

CPR

Figure 4-25 Extraction of CPR from LPM

STEP 7 Disconnect the fan cable from the connector in the backbone of CPR.

Note: The cooling fan is located in the backbone of CPR and the cable connector lies in its right side. Refer to Figure 4-26.

Connector for Cooling FAN Cable

CPR

Cooling FAN

PZ-M14

Figure 4-26 Rear View of CPR

STEP 8 Loosen the two screws fastening the box that contains the fan inside. Slightly lift the box and remove it from the CPR. Refer to Figure 4-26and Figure 4-27.

STEP 9 Take off the four screws and remove the cooling fan from the CPR. Refer to Figure 4-27.

STEP 10 Fasten the new cooling fan and CPR with screws. Then, connect the fan cable again to the con- nector. Refer to Figure 4-26and Figure 4-27.

CHAPTER 4 NDA-24300

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