Bts High Power Amplification (Bhpa) Module - Huawei Airbridge CBTS3612-800 User Manual

User Manual
Airbridge cBTS3612-450 12-carrier CDMA Base Station
1)
Power off and reinstall the corresponding BHPA module. Then, power it on
again.
2) Replace the fan monitor board (or the corresponding BRFM).
3)
Replace the BTRM.
4)
Replace the radio frequency backplane.
VI. Other BTRM faults
Other BTRM faults mainly include:
Transmission channel clock lost, hardware phase-lock lost, abnormal I 0 value and
digital general inverter fault.
If these faults occur and cannot be recovered after resetting the BTRM, please
replace the corresponding BTRM.
VII. BRFM fault
The BRFM faults mainly include:
The fan monitor board failed to read the temperature sensor, fan running abnormally,
fan monitor board temperature alarm and invalid speed control of fan monitor board.
The processing procedures are as follows. If the problem still cannot be solved in a
certain step, please handle it as described in the next one.
1)
Check whether the fan face shield connection is correct and reliable.
2)
Replace the fan monitor board or the corresponding BRFM.

6.8 BTS High Power Amplification (BHPA) Module

6.8.1 Description of Fault
No radio frequency signals output.
l
Abnormal radio frequency signals, including low output power and output
l
spectrum out of standard range.
6.8.2 Fault Analysis and Location
I. No radio frequency signals output
No radio frequency signals output from the BHPA module are mainly caused by
self-shield shutdown, self damage or abnormal cable/connector connection.
1)
Self-shield shutdown
For the sake of self-shield, the BHPA module will shut down automatically when there
is a power amplification alarm or an excess temperature alarm.
a) Power amplification overexcitation alarm
Power amplification overexcitation alarm reflects the levels of the input BHPA radio
frequency signals. When the levels of the input radio frequency signals are between
+0.5dBm and +1.5dBm, the BHPA will generate an overexcitation alarm but will not
shut down automatically. When they are more than +2.5dBm, the BHPA will generate
an overexcitation alarm and shut down automatically. If the external alarm conditions
no longer exist, the BHPA will resume to normal.
03Q-0112-20020720-120
6 Part Module Fault
6-9