NEC NEAX2400 EPM Lockup Failure Temporary, Troubleshooting, Repair Procedure, Chapter, ND-70185E

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. Other- wise, move to STEP 2.

STEP 2: Initialize the FCH card using the MB key. See Figure 7-3“How to Initialize FCH (PA-FCHA) Card.”

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 Figure 7-4“How to Replace FCH (PA-FCHA) Card.”

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 in order to monitor the PM. If the CPU cannot receive the return data within a predetermined time period, the system displays this data. When the failure is detected more than 15 times per hour, the failure is judged as permanent. Otherwise, 3-E “PM Lockup Failure (Temporary)” is displayed.

1.xx0x 0000 0000 0000 2. 0000 0000 0000 0000.........

PM Restart Type Note

0/1 = B-monitor / Initial Restart

PM Restart Type

FCH Mounting Location

MG U G

FCH Mounting Location

MG: Module Group￿

U: Unit (0-3)￿

G: Group (00-23)

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

Note: B-monitor Restart: Ports whose link have already been established remain connected, while ports process- ing 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. Other- wise, move to STEP 2.

STEP 2: Initialize the FCH (PA-FCHA) card using the MB key. See Figure 7-3“How to Initialize FCH Card.”

If this message is not displayed any more, monitor the FCH card for a while. Otherwise, move to STEP 3.

STEP 3: Replace the FCH card, referring to Figure 7-4“How to Replace FCH (PA-FCHA) Card.”

CHAPTER 7 ND-70185 (E)

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