UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE

Replacement Procedure

START

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ATTENTION

 

 

 

 

 

 

 

 

 

 

Contents

 

 

 

 

 

 

 

 

 

 

Static Sensitive

 

 

 

 

 

 

 

 

 

 

Handling

 

 

 

 

 

 

 

 

DSP

 

Precautions Required

 

 

MBR

 

 

CPUOPEWDT IMG0

Make a backup copy of the main data (office data,

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IMG1 IMG2

IMG3

CF/SPD data, etc.) onto the hard disk of the HFC.

1

2

3

4

 

 

 

 

 

 

 

OFF

 

 

 

 

 

 

 

 

 

 

1

2

3

4

5

6

7

8

 

 

 

OFF

 

 

 

 

 

 

4

6

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

E

 

 

 

 

 

 

 

 

 

 

C

 

 

 

1

2

3

4

5

6

7

8

 

 

 

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FRONT VIEW

Turn ON the MBR key on the DSP of the CPU

• System Changeover of the CPU

to be replaced. Then turn OFF the MBR key again.

from ACT to STBY mode.

 

 

• IMG0 lamp on the DSP begins to

 

flash green.

 

 

Confirm the mate CPU's ACT mode.

• Check the mate CPU’s lamp

 

indications:

 

 

 

CPU OPE=Steady green

Turn ON the EMA SUP key on the

IMG0, IMG1, IMG2, IMG3=Flash

green

 

 

 

 

 

EMA (PH-PC40) card.

 

 

 

 

 

• EMA SUP lamp on the EMA card is

 

 

green.

 

 

 

 

 

PWR (PZ-PW92)

Disconnect the power alarm cable from

SW

ON

the PALM connector on PZ-PW92.

 

 

OFF

 

-48V

Cable Name to be disconnected

 

 

 

 

 

 

PALM

CPU #0: 10AL-(110) FLT CA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CPU #1: 10AL-(130) FLT CA

OUTPWR

 

 

 

 

 

 

 

 

 

ON

INPWR

ALM

A

 

FRONT VIEW

NDA-24300CHAPTER 4

Page 249

Issue 1

Page 276
Image 276
NEC NDA-24300 manual Replacement Procedure