Huawei AISU User Manual page 40

AISU
User Manual
command to be run.) Check whether the ALD power switch is turned on and parameters are
correctly configured.
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
Step 5 If the AISU SN cannot be scanned, check whether the AISU is properly connected to the
RRU.


Step 6 Run the SCN ALD command and check the command output.


Step 7 Replace the AISU. After 4–5 minutes, scan the AISU SN again.
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----End
Device Link Failure After AISU Addition
Context
After an AISU is added, a message indicating that the ALD maintenance link is abnormal is
reported. When other commands are executed, a message indicating that the AISU does
not work is reported.
Table 6-2 describes the device link failure symptom after the AISU is added.
Table 6-2 Symptom
Symptom
After an AISU is
added, a message
indicating that the
ALD maintenance
link is abnormal is
reported. When
other commands are
executed, a message
indicating that the
AISU does not work
is reported.
Issue 02 (2017-06-12)
If the power switch is turned on and the current is normal, go to Step 5.
If the power switch is turned off, run the MOD ANTENNAPORT or MOD
ANTENNAPORT command to turn on the power switch again. (Refer to "Turning on
the AISU Power Switch" to determine which command to be run.) Run the DSP
ANTENNAPORT or DSP RETPORT command to check whether the AISU current
consumption is normal. If yes, go to Step 1. If no, go to Step 5.
If the AISU is properly connected to the RRU, go to Step 6.
If the connection is incorrect or the cable between the AISU and the RRU is loose,
reconnect the AISU to the RRU, and then go to Step 1.
If the AISU SN can be scanned, no further action is required.
If the AISU SN cannot be scanned, go to Step 7.
If the AISU SN can be scanned, no further action is required.
If the alarm persists, contact Huawei technical support engineers.
Impact on the
System
The communications
link fails to be set
up. As a result, the
primary and
secondary sites
cannot
communicate with
each other, and the
primary site cannot
manage the RET
antennas.
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6 Maintenance Guide
Severity Possible Cause
Communications
Major
exceptions occur when
the ADD RAE
command is run.
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