NEC Neax 2400 Imx Fusion Network System Manual

							CHAPTER 6 ND-70185 (E)
Page 146
Revision 3.0
POST INSTALLATION TEST
SDT Card Loopback Test
STEP 2: Make sure that the “LPB” lamp on the PA-SDTA card, or the “SYCxx” lamp on the PA-SDTB card
lights steady-green.
STEP 2.5: When the loopback pattern is “local loopback,” confirm that the “OPT” and “SYNC” lamps are both
OFF on the PA-SDTA card.
(“OPT” and “SYNC” lamps are OFF = Result of loopback test is fine)
STEP 3: Return the key settings of the P-SW key (on PA-SDTA card: see Figure 6-15) to the original position. 
						

							ND-70185 (E) CHAPTER 7
Page 147
Revision 3.0
CHAPTER 7 TROUBLESHOOTING
This chapter explains the Fusion-related system messages that may be displayed, together with procedures on
how to repair the indicated failure. If the message is displayed, follow the procedure described in each system
message. For more information on the other system messages, see the NEAX2400 IMX System Operations and
Maintenance Manual.
1. List of Fusion-related System Messages
Table 7-1 List of Fusion-related System Messages
No. System Message Remarks
1 3-B PM C-level Infinite Loop (Permanent)
2 3-C PM C-level Infinite Loop (Temporary)
3 3-D PM Lockup Failure (Permanent)
4 3-E PM Lockup Failure (Temporary)
5 13-H Signaling Link Failure (Permanent)
6 13-I Signaling Link Failure (Temporary)
7 13-J Signaling Link Failure (Recovery)
8 23-S FCH Failure Notification (Detection)
9 23-T FCH Fault Notification (Recovery)
10 23-U FCH Status Information
11 23-W FCH Alternate Routing Start Notification
12 23-X FCH Alternate Routing End Notification 
						

							CHAPTER 7 ND-70185 (E)
Page 148
Revision 3.0
TROUBLESHOOTING
List of Fusion-related System Messages
Figure 7-1 shows a sample system configuration. The number of cards and cables may vary depending on the
system.
Figure 7-1   Related Hardware

: 10 BASE-T cable
: Front Cable
06 04 05 03 02 01 0006 04 05 03 02 01 00
CN
CNCN
CN
CN
CN
BASEU
PIM 1
PIM 0
LPMTOPU
BSCM
CN
CN
CN
FCH DTI
HUB
FCHDTI13-H
Signaling Link Failure
1. 0001 0000 0000 0000
2. 0000 0000 0000 0000
MAT
FRONT VIEW This figure shows an example of system configuration.  Note that the number of cards and cables may vary depending

on the system.
System Message 
						

							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
UG
FCH Mounting LocationFCH 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.
ATTENTIONContents
Static Sensitive
Handling
Precautions RequiredOPE LED lights 
GREEN again. 
						

							CHAPTER 7 ND-70185 (E)
Page 150
Revision 3.0
TROUBLESHOOTING
3-B PM C-level Infinite Loop (Permanent)
Figure 7-4   How to Replace the FCH (PA-FCHA) Card
[How to Replace FCH card]


4C026AE

8
MNT 3
MNT 3MNT 3MB
MBMB
Not Used
MBR
FCH (PA-FCHA)
FCHDTI
MBR key operation
Cable Disconnection
Anti-static Kit
OPE
OPE
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
(MNT 3)
0 12MNT
Front Cable
MB key operation
FCHDTI
FCHDTI
1) Provide the anti-static kit.
2) Turn ON the MNT 3 switch. (make-busy-request)
3) Make sure that system message (23-W) FCH Alternate Routing (Start)
     is displayed.
4) Turn the MB key upward. (make-busy)
5) Disconnect the front cable from the FCH card with care.
6) Extract the FCH card from the slot.
7) Set key settings on the new FCH card.
8) Turn ON the MNT 3 switch on the new FCH card. (make-busy-request)
9) Turn the MB key upward on the new FCH card.
10) Mount the new FCH card in the same slot.
11) Connect the disconnected front cable again with care.
12) Turn the MB key downward.
13) Turn OFF the MNT 3 switch. (make idle)
14) Make sure that system message (23-X) FCH Alternate Routing (Stop)
       is displayed. 
						

							ND-70185 (E) CHAPTER 7
Page 151
Revision 3.0
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).
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.
Figure 7-6   3-D PM Lockup Failure (Permanent)
1. xx0x  0000  0000  0000           2. 0000  0000  0000  0000.........
MG
UG
FCH Mounting LocationFCH Mounting Location
MG: Module Group 
U: Unit (0-3)
G: Group (00-23)
PM Restart TypePM Restart Type
0/1 = B-monitor / Initial Restart
Note
1. xx00  0000  0000  0000       2. 0000  0000  0000  0000.........
MG
UG FCH Mounting LocationFCH Mounting Location
MG: Module Group 
U: Unit (0-3)
G: Group (00-23) 
						

							CHAPTER 7 ND-70185 (E)
Page 152
Revision 3.0
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.
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.”
1. xx0x  0000  0000  0000     2. 0000  0000  0000  0000.........
FCH Mounting Location
MG: Module Group
U: Unit (0-3)
G: Group (00-23)
MG
UG
FCH Mounting Location
PM Restart TypePM Restart Type
0/1 = B-monitor / Initial Restart
Note 
						

							ND-70185 (E) CHAPTER 7
Page 153
Revision 3.0
TROUBLESHOOTING
13-H/I/J Signaling Link Failure (Permanent)/(Temporary)/(Recovery)
6. 13-H/I/J Signaling Link Failure (Permanent)/(Temporary)/(Recovery)
This message is displayed when the Fusion link (D-ch) has a failure. If the failure occurs frequently, the system
displays 13-H Signaling Link Failure (Permanent). The shaded area in the figure listed below is related to this
message.
Figure 7-8   Fusion Link (Signaling Link) Failure
Figure 7-9   13-H/13-I/13-J Signaling Link Failure System Message
PCI Bus
PCI Bus
PCI Bus 10 Base T
............
Fusion Link
D/I
D/I TSW/INTTSW/INT
MUXMUX
FCHFCH DTI DTI
HUB
HUB
LANI
LANILANI CPUCPU
10 Base T10 Base T10 Base T self-Nodeother Node
TSW (Time Division Switch): PH-SW 10
HUB: PA-M96
MUX: PH-PC36
LANI (LAN Interface): PZ-PC19
FCH (Fusion Call Control Handler): PA-FCHA
DTI (Digital Trunk Interface): PA-24DTR B-channel / D-channel
ch 0ch 23D-channel (example)
13-H
Signaling Link Failure
1. 0001 0000 0000 0000
2. 0000 0000 0000 0000 
Faulty
MAT
1. xx0x  0000  0000  0000        2. 0000  0000  0000  0000.........
MG
UG
FCH Mounting LocationFCH Mounting Location
MG: Module Group 
U: Unit (0-3)
G: Group (00-23)
FCH CKT No.Circuit Number of FCH (0 - 7) 
						

							CHAPTER 7 ND-70185 (E)
Page 154
Revision 3.0
TROUBLESHOOTING
13-H/I/J Signaling Link Failure (Permanent)/(Temporary)/(Recovery)
6.1 Repair Procedure
 13-H (Permanent)
STEP 1: Make sure that the front cable is securely inserted. See Figure 7-10 below.
Figure 7-10   FCH-DTI Connection
STEP 2: Initialize the indicated FCH (PA-FCHA) card using the MB key. (MB key: Down➔ Up ➔ Down)
See Figure 7-3. When the LED on the FCH card lights green and the related system messages are not
displayed anymore, monitor the system for a while. Otherwise, move to STEP 3.
STEP 3: Replace the FCH card, following the procedure listed in Figure 7-4. If the failure exists after card re-
placement, move to STEP 4.
STEP 4: Replace the front cable labeled 10AL (10) FLT CA, since the cable is suspected as faulty.

DTI
FCH(PA-FCHA)DTI (PA-24DTR)
FCHDTI
CN210AL(10-)FLT
10AL(10)FLT CA
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
10AL(10)FLT CA
DTI
FCH
LED
MBFCH
DTI
Firmly insert the connector on the front edge of the indicated FCH card.
indicated FCH card
FRONT VIEW 
						

							ND-70185 (E) CHAPTER 7
Page 155
Revision 3.0
TROUBLESHOOTING
23-S FCH Failure Notification (Detection)
6.2 Repair Procedure
 13-I (Temporary)
STEP 1: Make sure that the front cable is securely inserted. (See Figure 7-10.)
STEP 2: If this message has been displayed once or twice, monitor the failure for a while. Otherwise, move to
STEP 3.
STEP 3: If 13-J (Recovery) has been displayed after this message, monitor the failure for a while. Otherwise,
move to STEP 4.
STEP 4: Initialize the indicated FCH (PA-FCHA) card using the MB key. (MB key: Down 
➔ Up ➔ Down)
See Figure 7-3. When the LED on the FCH card lights green and the related system messages are not
displayed any more, monitor the system for a while. Otherwise, move to STEP 5.
STEP 5: Replace the FCH card, following the procedure listed in Figure 7-4. If the failure exists after card re-
placement, move to STEP 6.
STEP 6: Replace the front cable labeled 10AL (10) FLT CA, since the cable is suspected as faulty.
7. 23-S FCH Failure Notification (Detection)
This message is displayed when the FCH (PA-FCHA) card is faulty due to the problems such as an Ethernet
controller initial failure.
The message is displayed in the following format. If this message is displayed, check the related Ethernet cables,
following the procedure listed on the next page.
Figure 7-11   23-S FCH Failure Notification
1. xx0x  xx00  0000  0000           2. 0000  0000  0000  0000.........
MG
UG
FCH Mounting Location
FCH Mounting Location
MG: Module Group 
U: Unit (0-3)
G: Group (00-23)FCH CKT No.
Circuit Number of FCH (0 - 7) FLTINF: Fault Information
Note
FLTINF
FLTINF = 01H: ETHER Controller Initial NG (If this is indicated, replace the FCH (PA-FCHA) card.)
FLTINF = 02H: ETHER Link Failure Note: