Repair Procedure; E Pm Lockup Failure (Temporary); Figure 7-7 3-E Pm Lockup Failure (Temporary) - NEC NEAX 2400 IPX Manual

TROUBLESHOOTING

3-E PM Lockup Failure (Temporary)

4.1 Repair Procedure

STEP 1: Make sure that station-to-station connections can be established in the PIM containing the indicated
FCH (PA-FCHA) card.
If the station-to-station connections cannot be established, the PIM is faulty. Repair the PIM.
Otherwise, move to STEP 2.
STEP 2: Initialize the FCH card using the MB key. See
When the LED lights green and no system message related to this failure displays again, monitor the
system for a while. Otherwise, move to STEP 3.
STEP 3: Replace the FCH card. Refer to
5. 3-E PM Lockup Failure (Temporary)
The CPU sends diagnosis data at periodic intervals to the Port Microprocessor (PM) on the FCH (PA-FCHA)
cards to monitor the PM. If the CPU cannot receive the return data within a predetermined time, the system
displays the data in Figure
as permanent. Otherwise, 3-E "PM Lockup Failure (Temporary)" is displayed.
1. xx0x 0000 0000 0000
MG
U
FCH Mounting Location
Note: B-monitor Restart: Ports whose link have already been established remain connected, while ports
processing a call-origination may be released.
Initial Restart: All ports on the circuit card are force released to be placed in idle state.
5.1 Repair Procedure
STEP 1: If this system message has been displayed only once or twice, monitor the failure for a while.
Otherwise, move to STEP 2.
STEP 2: Initialize the FCH (PA-FCHA) card using the MB key. See
If this message is not displayed anymore, monitor the FCH card for a while. Otherwise, move to
STEP 3.
STEP 3: Replace the FCH card, referring to
CHAPTER 7
Page 164
Revision 1.0
Figure 7-4
7-7. When the failure is detected more than 15 times per hour, the failure is judged
2. 0000 0000 0000 0000.........
PM Restart Type
G

Figure 7-7 3-E PM Lockup Failure (Temporary)

Figure 7-4
NDA-24299
Figure 7-3 "How to Initialize FCH (PA-FCHA) Card."
"How to Replace FCH (PA-FCHA) Card."
PM Restart Type
0/1 = B-monitor / Initial Restart
FCH Mounting Location
MG: Module Group
U: Unit (0-3)
G: Group (00-23)
Figure 7-3
"How to Replace FCH (PA-FCHA) Card."
Note
"How to Initialize FCH Card."