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ND-70185 (E) CHAPTER 7
Page 157
Revision 3.0
TROUBLESHOOTING
23-S FCH Failure Notification (Detection)
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.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
2
MB
OPE
10 BASE-T
: 10 BASE-T cable
Unplug and plug the modular connector
MB
MB
HUB-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.
HUB-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.
HUB - FCH Cable Connection Test
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,
perform the conductive test of the 10 BASE-T cable.
modular
connector
modular
connector
HUB (PA-M96)
HUB (PA-M96)
FCH (PA-FCHA)
DTI(PA-24DTR)
MNT 3
MNT
to LANI
(PZ-PC19)
A
B
B
C
C
A
MB
MB