NEC NEAX2400 Troubleshooting, 13How to Check 10 BASE-TCables, ND-70185ECHAPTER Page Revision

Models: NEAX2400

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DTI(PA-24DTR)

TROUBLESHOOTING

23-S FCH Failure Notification (Detection)

BHUB-HUB Cable Connection Test

1)Turn ON the MNT switch of the FCH cards which are connected to the both HUB cards.

2)Make sure that system message (23-W) "FCH Alternate Routing (start)" is displayed for each FCH.

3)Turn ON the MB key on the both HUB cards.

4)Unplug and plug the modular connector a few times at each conne- ctor since the connection may be a poor contact.

5)If the above procedure does not result in normal operation, perform the conductive test of the 10 BASE-T cable.

DTI(PA-24DTR)

ATTENTION

Contents

Static Sensitive

Handling

Precautions Required

 

FCH (PA-FCHA)

 

MB

HUB (PA-M96)

MB

 

HUB (PA-M96)

MNT 3

MNT

 

 

MB

MB

 

modular

 

 

connector

 

 

A

HUB - FCH Cable Connection Test

 

 

B

A

1)

Turn ON the MNT 3 switch on the FCH card. (make-busy-request)

2)

Make sure that system message (23-W) "FCH

 

Alternate Routing (start)" is displayed.

3)

Turn ON the MB key on the FCH card.(make-busy)

4)

Turn ON the MB key on the HUB card.(make-busy)

5)

Unplug and plug the modular connector a few

 

times at each connector since the connection may

 

be a poor contact.

6)

If the above procedure does not result in normal operation,

HUB (PA-M96) : 10 BASE-T cable

to LANI

C (PZ-PC19)

perform the conductive test of the 10 BASE-T cable.

CHUB-LANI Cable Connection Test

1)Turn ON the MNT3 switch of the FCH cards which are connected to the both HUB cards.

2)Make sure that system message (23-W) "FCH Alternate Routing (start)" is displayed for each FCH.

3)Turn ON the MB key on the HUB card.

4)Unplug and plug the modular connector a few times at each connector since the connection may be a poor contact.

5)If the above procedure does not result in normal operation, perform the conductive test of the 10 BASE-T cable.

OPE

MB

modular connector

2

10 BASE-Tmodular

Unplug and plug the modular connector

Figure 7-13 How to Check 10 BASE-T Cables

WARNING: When a HUB card is placed in make-busy, all BASE-T interfaces connected to the HUB card become inoperative.

ND-70185 (E)CHAPTER 7

Page 157

Revision 3.0

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Image 172
NEC NEAX2400 Troubleshooting, 13How to Check 10 BASE-TCables, ND-70185ECHAPTER Page Revision, DTIPA-24DTR, Fch Pa-Fcha