Chapter 5 - Alarms and Handling
Confidential and Proprietary Information of ZTE CORPORATION 123
PA Voltage SWR Alarm
1.
Description
PA voltage standing wave ratio alarm happens.
2.
Related information
Alarm code: 0X1C08.
Alarm level: 3.
Alarm influence: This ETRM cannot serve calls for PA is damaged.
Alarm unit location type: CU.
Internal handling flow: ETRM is disabled.
3.
Cause
The direct cause is the too large reverse power.
4.
Handling method
i.
Check whether the cables are secure.
ii.
If the fault persists, replace the ETRM module in time.
5.
Verification
This alarm does not appear in the OMCR alarm interface.
6.
Precautions
None.
PA Overheat Minor Alarm
1.
Description
PA overheat minor alarm happens.
2.
Related information
Alarm code: 0X1C09.
Alarm level: 4.
Alarm influence: ETRM can still work, but the PA ages at a quicker step.
Alarm unit location type: CU.
3.
Cause
The PA is overheated. Possibly, the PA has worked at full power for a
long time; the fan is not running for a long time; the ambient
temperature is too high; or the detection circuit is faulty.
4.
Handling method
i.
Check whether the fan works normally and whether the ambient
temperature is too high.
ii.
If the fan works normally and the ambient temperature is normal,
but the PA temperature alarm persists, the detection circuit may be
faulty. Continue the observation.
5.
Verification
