NEC NDA-24300 manual Yes

Models: NDA-24300

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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE

WARNING

Before replacing the EMA card, check the CPU #0’s ACT mode. Attempting to replace the card

when the CPU is active will result in the system being initialized.

Replacement Procedure

NO

CPU is Active?

YES

Turn ON the MBR key on the DSP #1.

(System Changeover of CPU #1: ACT STBY)

Turn ON the MB key on the EMA (PH-PC40) card.

Extract the EMA card from the LPM.

Check the CPU OPE lamp of DSP #1. When the lamp is steady-green, perform the system changeover.

OPE/MB lamp on the EMA card lights red from green.

When NCU (PA-M53) cards are mounted, Power Failure Transfer (PFT) is activated.

A

NDA-24300CHAPTER 4

Page 259

Issue 1

Page 286
Image 286
NEC NDA-24300 manual Yes