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...

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....

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...

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...

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....

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...

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...

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...

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...

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...