Linearization Disturbance Performance
Degraded
Operating Instructions
171/1543-LZA 701 6014/1 Uen U4B
Copyright
© Ericsson AB 2016-2018. All rights reserved. No part of this document may be
reproduced in any form without the written permission of the copyright owner.
Disclaimer
The contents of this document are subject to revision without notice due to
continued progress in methodology, design and manufacturing. Ericsson shall
have no liability for any error or damage of any kind resulting from the use of this
document.
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171/1543-LZA 701 6014/1 Uen U4B | 2018-12-21
Contents
Contents
1
Select Remedy Action for Linearization Disturbance
Performance Degraded
1
2
Remedy Action for DeviceGroup
2
3
Remedy Action for FieldReplaceableUnit
4
171/1543-LZA 701 6014/1 Uen U4B | 2018-12-21
Linearization Disturbance Performance Degraded
171/1543-LZA 701 6014/1 Uen U4B | 2018-12-21
Select Remedy Action for Linearization Disturbance Performance Degraded
1
Select Remedy Action for Linearization
Disturbance Performance Degraded
Linearization Disturbance Performance Degraded is a primary alarm.
Table 1
Alarm Summary
Managed Object
Additional Text
Link to Recovery Actions
DeviceGroup
N/A
Remedy actions
FieldReplaceableUnit
N/A
Remedy actions
171/1543-LZA 701 6014/1 Uen U4B | 2018-12-21
1
Linearization Disturbance Performance Degraded
2
Remedy Action for DeviceGroup
The Linearization Disturbance Performance Degraded alarm originates
from a radio.
The radio continues to carry traffic with operational state of DEGRADED. The
cell(s) transmitting with this radio maintain their cell coverage/size with
approximately 10% to 20% reduction in data throughput.
Note:
The additional text Mixed Mode Radio with external ME indicates
that the RD is shared with an external ME and possible conflict with
another RAN needs to be considered.
Prerequisites
— All concerned NOCs are informed that work is about to start.
— The alarm has not automatically been cleared by the system
— The following documents have been read and understood:
•
Handling Faulty Equipment
•
Personal Health and Safety Information
•
System Safety Information
— Other documentation referenced within the alarm operating instruction is
available.
— Access to a node management tool is secured, if required.
— Access to the site is secured, if on-site activities are required.
Steps
1. Identify the radio that raised the alarm.
If the alarm is raised for the first time from this radio, it is recommended to
monitor the alarm to see if it automatically clears in 24 hours. The cell continues
to operate at near full capacity.
If the alarm does not automatically cease or multiple alarm occurrences happen
on this radio, do the following:
2. Restart the unit.
If the alarm remains, do the following:
3. Switch the power off and on.
2
171/1543-LZA 701 6014/1 Uen U4B | 2018-12-21
Remedy Action for DeviceGroup
If the alarm reoccurs, do the following:
4. Write a Site Failure Note (SFN).
See Handling Faulty Equipment.
The cell continues to operate at near full capacity. Continue only if ready to
replace the alarm reporting radio.
If ready to replace the alarm reporting radio, do the following:
5. Lock the faulty radio.
See Replacing Radio Units or Replacing Remote Radio Units.
6. Unlock the unit.
If the alarm remains, do the following:
7. Consult the next level of maintenance support.
171/1543-LZA 701 6014/1 Uen U4B | 2018-12-21
3
Linearization Disturbance Performance Degraded
3
Remedy Action for FieldReplaceableUnit
The Linearization Disturbance Performance Degraded alarm is raised
when an attempted recovery from a linearization disturbance on the downlink of
a transceiver fails. The uplink of the transceiver is not affected. The
Linearization Disturbance Performance Degraded alarm originates from a
radio.
The radio continues to carry traffic with operational state of DEGRADED. The
cell(s) transmitting with this radio maintain their cell coverage/size with
approximately 10% to 20% reduction in data throughput.
Note:
The additional text Mixed Mode Radio with external ME indicates
that the RD is shared with an external ME and possible conflict with
another RAN needs to be considered.
Prerequisites
— All concerned NOCs are informed that work is about to start.
— The alarm has not automatically been cleared by the system
— The following documents have been read and understood:
•
Handling Faulty Equipment
•
Personal Health and Safety Information
•
System Safety Information
— Other documentation referenced within the alarm operating instruction is
available.
— Access to a node management tool is secured, if required.
— Access to the site is secured, if on-site activities are required.
Steps
1. Identify the radio that raised the alarm.
If the alarm is raised for the first time from this radio, it is recommended to
monitor the alarm to see if it automatically clears in 24 hours. The cell continues
to operate at near full capacity.
If the alarm does not automatically cease or multiple alarm occurrences happen
on this radio, do the following:
2. Restart the unit.
4
171/1543-LZA 701 6014/1 Uen U4B | 2018-12-21
Remedy Action for FieldReplaceableUnit
If the alarm remains, do the following:
3. Switch the power off and on.
If the alarm reoccurs, do the following:
4. Write a Site Failure Note (SFN).
See Handling Faulty Equipment.
The cell continues to operate at near full capacity. Continue only if ready to
replace the alarm reporting radio.
If ready to replace the alarm reporting radio, do the following:
5. Lock the faulty radio.
See Replacing Radio Units or Replacing Remote Radio Units.
6. Unlock the unit.
If the alarm remains, do the following:
7. Consult the next level of maintenance support.
171/1543-LZA 701 6014/1 Uen U4B | 2018-12-21
5