ald link maintenance failure

8/10/2019 ALD Link Maintenance Failure

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ALM-26541 ALD Maintenance Link Failure

Description

This alarm is reported when the maintenance link between the RF unit and the ALD

(RET antenna, TMA, or SASU) malfunctions

Alarm Severity Alarm ImpactMajor If the maintenance link of the RET antenna is broken, the antenna tilt cannot beregulated. In this case, the state of the RET antenna cannot be monitored.If the maintenance link of the TMA is broken, the TMA gain cannot be configured. Inthis case, the state of the TMA cannot be monitored.

The maintenance link for the SASU is disconnected. Therefore, the gain of the SASUcannot be set and the SASU status cannot be monitored.

Possible Causes

The ALD current of the RF unit is out of range, or the configured ALD switch does

not match the actual type of the ALD port on the RF unit.

The ALD switch of the RF unit is not turned on.

The data configuration of the antenna, such as vendor code and device serial

number, is incorrect.

There are feeder problems, such as water damage, connector fault, or bent cable.(AISG Cable/Feeder Cable/Jumper)

The hardware of the RF unit is faulty.

The antenna device is faulty

Handling Procedure

1. Check for the correlated alarm on the M2000.

a. Check for the correlated alarm of the RF unit on the M2000:

26530 RF Unit ALD Current Out of Range

26531 RF Unit ALD Switch Configuration Mismatch

Y => The correlated alarm exists. Go to sub-stepb.

N => The correlated alarm does not exist. Go to step2.
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b. Clear the correlated alarm according to the relevant handling suggestions.

Check whether the alarm is cleared.

Y => The alarm is cleared. No further action is required.

N => The alarm is not cleared. Go to step2.

2. Set the ALD switch of the RF unit on the M2000.

a. Run the MML commandSET ALDPWRSWto close the ALD switch, andthen open it.




3. Check the antenna device configuration of the RF unit on the M2000.

a. Run the MML commandLST ALDto check whether the antenna deviceconfiguration, such as vendor code and device serial number, is consistent

with the actual conditions.

Y => The configuration is consistent with the actual conditions. Go to step4.

N => The configuration is inconsistent with the actual conditions. Go to sub-

stepb.

b. Run the MML commandMOD ALDto modify the antenna deviceconfiguration of the RF unit, such as vendor code and device serial number,

according to the actual conditions.




4. Reconnect the jumper to the antenna port of the RF unit on site.

a. Reconnect the jumper to the antenna port of the RF unit .


Y => The alarm is cleared. No further action is required.N => The alarm is not cleared. Go to step5.

5. Check the installation of feeders for the RF unit on site.

a. Check the installation of feeders for the RF unit.

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6. Check the installation of jumper between the feeder and the antenna device on site.

a. Check the installation of jumper between the feeder and the antenna device.




7. Reset the RF unit on site.

a. Power off the RF unit on site and then power it on. Wait until the RF unitstartup is complete (the RUN LED blinking, ON for 1s and OFF for 1s).




8. Replace the RF unit on site.

a. Replace the RF unit.



N => The alarm is not cleared.Reinstall the original board. Go to step9.

9. Replace the antenna device on site.

a. Perform the corresponding operation according to the antenna device type.

In the case of the RET antenna,replace the RET antenna.

In the case of the TMA,replace the TMA.

In the case of the SASU,replace the SASU.


Y => The alarm is cleared. No further action is required
http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step6http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step6http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step6http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-11.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-11.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-0.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-0.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step7http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step7http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step7http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-0.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-0.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step8http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step8http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step8http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-4.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-4.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-0.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-0.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-34.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-34.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-34.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step9http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step9http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step9http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-17.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-17.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-17.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-18.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-18.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-18.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-19.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-19.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-19.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-0.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-0.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-0.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-19.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-18.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-17.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step9http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-34.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-0.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-4.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step8http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-0.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step7http://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-0.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/opt/opt-11.htmlhttp://172.29.33.207/hedex/pages/OMC/01/583737679/01%20(2012-09-12)/resources/help/detail_information/alm-26541.html?ft=99&fe=1111&id=27_BTS3812EV100R013ENGC00SPC320_Alarm_26541#step6


4/9

Commands: LST ALDPWRSW (List ALD Power Switch information)

Run command LST ALDPWRSW to make sure all power supply ports A are

turned on and B are off. Like in below snap.


5/9

LST ALD (List antenna Line device configuration)


6/9

LST ANTTILTRNG (List Antenna supported Tilt Range)


7/9

DSP ANTTILT (Display Antenna Tilt)


8/9

DSP LCPSW (Display ALD Current protection) Below Example

DSP ALDDEV(Display ALD Version) Run command DSP ALDVER to check allALD software are upgraded to latest version. See Below example


9/9

ald link maintenance failure

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