NEC NEAX2400 system manual 3. 3-CPM C-levelInfinite Loop Temporary, DPM Lockup Failure Permanent

TROUBLESHOOTING

3-C PM C-level Infinite Loop (Temporary)

3. 3-C PM C-level Infinite Loop (Temporary)

This message is displayed when the C-level program has been detected as abnormal by the Port Micropro- cessor (PM) mounted on the FCH (PA-FCHA) card. In this instance, the system performs an appropriate restart (B-monitor/Initial restart) according to the frequency of the failures. If the frequency exceeds 15 times an hour, it is judged as permanent. See "3-B PM C-level Infinite Loop (Permanent)".

1. xx0x 0000		0000	0000		2. 0000 0000 0000 0000	PM Restart Type
						0/1 = B-monitor / Initial Restart
						FCH Mounting Location
					PM Restart Type
						MG: Module Group ￿
	MG	U		G		U: Unit (0-3)￿
						G: Group (00-23)
		FCH Mounting Location

Note

Figure 7-5 3-C PM C-level Infinite Loop (Temporary)

Note: B-monitor Restart: Ports whose link has 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.

3.1 Repair Procedure

STEP 1: If the 3-C message has been displayed only once or twice, monitor the failure for a while. Otherwise, move to STEP 2.

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

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 3.

STEP 3: Replace the FCH card, following the procedure listed in Figure 7-4“How to Replace FCH (PA- FCHA) card.”

4.3-D PM Lockup Failure (Permanent)

The CPU sends diagnosis data at periodic intervals to the Port Microprocessor (PM) on 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 per- manent. Otherwise, 3-E PM Lockup Failure (Temporary) is displayed.

1. xx00		0000	0000	0000		2. 0000	0000	0000	0000
		FCH Mounting Location
	MG U				G

FCH Mounting Location

MG: Module Group ￿

U: Unit (0-3)￿

G: Group (00-23)

Figure 7-6 3-D PM Lockup Failure (Permanent)

ND-70185 (E)CHAPTER 7

Page 151

Revision 3.0