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CHAPTER 7 ND-70185 (E)
Page 150
Revision 3.0
TROUBLESHOOTING
3-B PM C-level Infinite Loop (Permanent)
Figure 7-4 How to Replace the FCH (PA-FCHA) Card
[How to Replace FCH card]
4
C
0
2
6
A
E
8
MNT 3
MNT 3
MNT 3
MB
MB
MB
Not Used
MBR
FCH (PA-FCHA)
FCH
DTI
MBR key operation
Cable Disconnection
Anti-static Kit
OPE
OPE
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
(MNT 3)
0
1
2
MNT
Front Cable
MB key operation
FCH
DTI
FCH
DTI
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.