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This content describes the phenomenon, the impact on the system, the possible causes, the tools required for troubleshooting the fault, the precautions, and the processing steps when the OSN3500 interface board of the SDH transmission equipment causes service interruption.
Fault phenomenon
The network management reports interface board failure alarm and service interruption.
Procedures
- Cause 1: Interface board failure.
- Remove the interface board from the current slot and insert it into another slot. After replacing the interface board in the slot, check whether there are still alarms reported on the interface board.
If ......
then ......
the interface board is still reporting alarms.
Locate the faulty interface board and replace it. After replacing the interface board, check whether the alarm disappears, if the alarm is still reported, then turn to other reasons.
If no alarms are reported on the interface board, refer to other causes.
Refer to other causes.
- Remove the interface board from the current slot and insert it into another slot. After replacing the interface board in the slot, check whether there are still alarms reported on the interface board.
- Cause 2: Motherboard failure.
- Pull out the veneer to see if the backplane has a reverse pin phenomenon. If there is backward needle phenomenon, then repair the backplane slot damaged needle, if there is no backward needle phenomenon, then continue to the next step.
- Replace the subrack, then the alarm disappears and the business returns to normal.
The related technical information and SDH equipment troubleshooting procedures in this chapter are provided by Shenzhen Optical Transmission Network Technology Company Limited ( www.opticaltrans.com), please retain! Huawei SDH Optical Transmission Equipment,SDH Transmission Equipment Sales
