Troubleshooting - Huawei Airbridge cBTS3612 Maintenance Manual

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station

3.7.2 Troubleshooting

I.
Receiving channel over-excited
Remove the fault according to the following procedures step by
step.
1) If the problem is caused by the external interference,
nothing needs to be done to the BTS, but try to reduce the
external interference.
2) If the problem is caused by the FPGA logic failure, reset
the BTRM.
Replace the BTRM.
3)
Software phase -lock unlocked
II.
Such problem can be solved automatically if it is not caused by
hardware failure, and it generally will take 5 minutes. If the problem
lasts for a long time, follow the handling process below. Go to next
step if the problem cannot be solved with the current one.
Eliminate the BRDM failure;
1)
Replace the relevant optical fiber;
2)
3) Replace the BTRM.
III.
Abnormal forward link power
Abnormal forward link power may yield interference on the
adjacent cells. Follow the handling process below. Go to next step if
the problem cannot be solved with the current one.
1) Check if the BRDM, BCPM or BCKM are secured in place;
2) Replace the relevant optical fiber;
Chapter 3 Component Failure
3-17
Handling