Figure 7-4 How To Replace The Fch (Pa-Fcha) Card - NEC NEAX 2400 IMX Manual

TROUBLESHOOTING
3-B PM C-level Infinite Loop (Permanent)
[How to Replace FCH card]
1) Provide the anti-static kit.
2) Turn ON the MNT 3 switch. (make-busy-request)
3) Make sure that system message (23-W) "FCH Alternate Routing (Start)"
is displayed.
4) Turn the MB key upward. (make-busy)
5) Disconnect the front cable from the FCH card with care.
6) Extract the FCH card from the slot.
7) Set key settings on the new FCH card.
8) Turn ON the MNT 3 switch on the new FCH card. (make-busy-request)
9) Turn the MB key upward on the new FCH card.
10) Mount the new FCH card in the same slot.
11) Connect the disconnected front cable again with care.
12) Turn the MB key downward.
13) Turn OFF the MNT 3 switch. (make idle)
14) Make sure that system message (23-X) "FCH Alternate Routing (Stop)"
is displayed.
FCH
DTI
MNT 3
8
Anti-static Kit
MBR key operation
CHAPTER 7
Page 150
Revision 3.0
FCH DTI
OPE
MB
MNT 3
MB key operation

Figure 7-4 How to Replace the FCH (PA-FCHA) Card

ND-70185 (E)
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FCH (PA-FCHA)
MBR
(MNT 3)
2
1
0
OPE
MB
MNT 3
Front Cable
Cable Disconnection
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
MB
MNT
4
C
FCH DTI