NEC NDA-24300 manual Refer to -2for CPR face layout Refer to -3to replace the CPU

Models: NDA-24300

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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE

A

Turn OFF the SW key on PZ-PW92.

Disconnect power cables from the OUTPWR connector and INPWR connector on PZ-PW92.

Cable to be disconnected from OUTPWR

CPU #0: 6P-(4P-3P) PWR CA-A

CPU #1: 6P-(4P-3P) PWR CA-B

Cable to be disconnected from INPWR

CPU #0: 4P-2P PWR CA-A

CPU #1: 4P-2P PWR CA-B

PWR (PZ-PW92)

SW

ON

OFF

-48V

PALM

OUTPWR

ON

INPWR ALM

FRONT VIEW

ATTENTION

Contents Static Sensitive

Handling Precautions Required

Disconnect bus cables from the front connectors on the PZ-GT16.

Cables to be disconnected EXGT BUSCA-A for CN-A connector 50-40 GT BUS CA-A for CN-B connector

Disconnect Ethernet cables from the front connectors on the PZ-PC19 (LANI).

Cables to be disconnected

Ether cable: UTP CTG5 ST CA-n

Note: The kind of Ethernet cable may vary, vary, depending on its connecting conditions.

Take off the four screws fastened onto the CPR. (Keep the removed screws.)

B

Refer to Figure 4-2for CPR face layout.

Refer to Figure 4-2for CPR face layout.

Refer to Figure 4-3to replace the CPU.

CHAPTER 4

NDA-24300

Page 250

Issue 1

Page 277
Image 277
NEC NDA-24300 manual Refer to -2for CPR face layout Refer to -3to replace the CPU