NEC NDA-24300 manual IMG0 CPU DSP = Flash green IMG1-3 CPU DSP = OFF

Models: NDA-24300

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UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE

B

On the EMA card, set the EMA SUP switch DOWN.

Flip the MBR key on the DSP of CPU which controls the mate GT. Confirm the new GT functions normally.

END

ATTENTION

Contents

Static Sensitive

Handling

Precautions Required

EMA SUP lamp on the EMA card goes OFF.

System Changeover

Replaced GT: STBY to ACT

Mate GT: ACT to STBY

Check the following lamp indications on the new GT card and the DSP of the CPR which controls the GT.

OPE/MB (GT card) = Steady-green

CPU OPE (CPU DSP) = Steady-green

IMG0-3 (CPU DSP) = Flash (green)

Note: IMG2~3 lamp indications may vary depending on the system configuration.

Check the following lamp indications on the mate GT card and the DSP of the mate CPR:

OPE/MB (GT card) = OFF

CPU OPE (CPU DSP) = OFF

IMG0 (CPU DSP) = Flash (green)

IMG1-3 (CPU DSP) = OFF

Note: The system changeover of GT can be executed also by using the CMOD command. For details, refer to Chapter 8, Maintenance Commands.

NDA-24300CHAPTER 4

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NEC NDA-24300 manual IMG0 CPU DSP = Flash green IMG1-3 CPU DSP = OFF