APAA00001
User Manual
4 System Maintenance
Draft A (2015-06-12)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
17
Table 4-1
Hardware fault alarm
Symptom
Impact on the
System
Severity
Cause
This alarm is reported
when the flash memory or
I
2
C bus inside the PAA is
faulty. In this situation, the
alarm indicator is steady
on. This alarm can be
queried using the PAA app.
The data storage
or read functions,
such as battery
status query and
board
temperature
query, may be
faulty.
Major
The read/write
function of the flash
memory is faulty.
The flash memory
fails.
The I
2
C bus is faulty.
The I
2
C bus fails.
Handling Method
Restart the PAA.
If the PAA communicates properly with the smartphone and the alarm is cleared after the
restart, no further actions are required.
If the alarm persists, the PAA has been damaged. In this case, replace the PAA with a
new one or contact Huawei technical support.
----End
4.2.2 AISG/OOK Overcurrent Alarm Handling
Background
If the ALD connected to the AISG or OOK port on the PAA has overly strong current or is
short-circuited, the PAA forcibly shuts down the external power supply and an AISG/OOK
overcurrent alarm is reported.
Table 4-2 describes the AISG/OOK overcurrent alarm.
