Figure 7-2 3-B Pm C-Level Infinite Loop (Permanent); Figure 7-3 How To Initialize The Fch (Pa-Fcha) Card - NEC NEAX 2400 IMX Manual

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.
1. xx00 0000 0000 0000
MG
U
FCH Mounting Location
2.1 Repair Procedure
STEP 1: Initialize the indicated FCH (PA-FCHA) card using the MB key. (MB key: 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.
Flip the MB key as follows to initialize the FCH card.
FCH (PA-FCHA)
OPE
MB
STEP 2: Replace the FCH card, following the procedure listed in
FCHA) card."
2. 0000 0000 0000 0000.........
G

Figure 7-2 3-B PM C-level Infinite Loop (Permanent)

OPE LED is OFF.
OPE
MB
Anti-static Kit

Figure 7-3 How to Initialize the FCH (PA-FCHA) Card

ND-70185 (E)
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3-B PM C-level Infinite Loop (Permanent)
FCH Mounting Location
OPE LED lights
GREEN again.
MB
FRONT VIEW
Figure 7-4
TROUBLESHOOTING
MG: Module Group
U: Unit (0-3)
G: Group (00-23)
Up Down)
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
OPE
"How to Replace the FCH (PA-
CHAPTER 7
Page 149
Revision 3.0