NEC NEAX2400 system manual • 13-HPermanent

TROUBLESHOOTING

13-H/I/J Signaling Link Failure (Permanent)/(Temporary)/(Recovery)

6.1Repair Procedure

• 13-H (Permanent)

STEP 1: Make sure that the front cable is securely inserted. See Figure 7-10below.

FCH

Firmly insert the connector on the front edge of the indicated FCH card.

DTI (PA-24DTR)

LED

FCH(PA-FCHA) MB

10AL(10)FLT CA

DTI

DTI

ATTENTION

Contents

Static Sensitive

Handling

Precautions Required

10AL(10)FLT CA

FCH

DTI

10AL (10-)FLT

FCH

indicated FCH card

FRONT VIEW

Figure 7-10 FCH-DTI Connection

STEP 2: Initialize the indicated FCH (PA-FCHA) card using the MB key. (MB key: Down➔ Up ➔ Down)

See Figure 7-3. When the LED on the FCH card lights green and the related system messages are not displayed anymore, monitor the system for a while. Otherwise, move to STEP 3.

STEP 3: Replace the FCH card, following the procedure listed in Figure 7-4. If the failure exists after card re- placement, move to STEP 4.

STEP 4: Replace the front cable labeled 10AL (10) FLT CA, since the cable is suspected as faulty.

CHAPTER 7 ND-70185 (E)

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Revision 3.0