NEC NDA-24300 manual For Single Configuration

(2)For Single Configuration

START

Check to see if the fault occurs by extracting TSW circuit cards one by one.

Check to see if the fault occurs by extracting MUX circuit cards one by one.

A

FAULT REPAIR PROCEDURES

ATTENTION

Contents

Static Sensitive

Handling

Precautions Required

Replace the TSW circuit card referring to Section 2.3.2, TSW Card Replacement Procedure, in Chapter 4.

Check to see if a station-to-station connection can be set up and identify a TSW circuit card responsible for the fault.

Perform the above check by extracting the TSW circuit cards individually.

Replace the MUX circuit card referring to Section 3.3.2, MUX Card Replacement Procedure, in Chapter 4.

Initialize the system by pressing the START button on the TOPU.

Check to see if a station-to-station connection can be set up and identify a TSW circuit card responsible for the fault.

Perform the above check by extracting the TSW circuit cards individually.

NDA-24300CHAPTER 5

Page 351

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