User's Manual

ND-70185 (E) CHAPTER 7
Page 149
Revision 3.0
TROUBLESHOOTING
3-B PM C-level Infinite Loop (Permanent)
2. 3-B PM C-level Infinite Loop (Permanent)
This message is displayed when a C-level program abnormal state has been detected as permanent. When
the abnormal state is detected by the Port Microprocessor (PM) on an FCH card, the PM places the card
into make-busy status. If the failure occurs more than 15 times an hour, the system judges the failure as
permanent, issuing 3-B system message.
Figure 7-2 3-B PM C-level Infinite Loop (Permanent)
2.1 Repair Procedure
STEP 1: Initialize the indicated FCH (PA-FCHA) card using the MB key. (MB key: Down
➔
Up
➔
Down)
When the LED on the FCH card lights green and the related system messages are not displayed, mon-
itor the system for a while. Otherwise move to STEP 2.
Figure 7-3 How to Initialize the FCH (PA-FCHA) Card
STEP 2: Replace the FCH card, following the procedure listed in Figure 7-4 “How to Replace the FCH (PA-
FCHA) card.”
1. xx00 0000 0000 0000 2. 0000 0000 0000 0000.........
MG
U
G
FCH Mounting Location
FCH Mounting Location
MG: Module Group
U: Unit (0-3)
G: Group (00-23)
MB
OPE
MB
OPE
Flip the MB key as follows to initialize the FCH card.
MB
OPE
FCH (PA-FCHA)
FRONT VIEW
Anti-static Kit
OPE LED is OFF.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
OPE LED lights
GREEN again.