Huawei Airbridge cBTS3612 Maintenance Manual page 48

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station
III.
Clock failure
The CLK unit of the BCKM is responsible for receiving and
processing the GPS clock signals. Possible clock unit failures include:
hardware failure of the clock module, satellite antenna and feeder
system failure, failure in reference clock source driving and master
clock unlocked, etc.
When the above-mentioned problems arise, check and
eliminate the satellite antenna and feeder system failure first, and
then reset the BCKM. If the problems sustain, replace that BCKM.
IV.
Other faults
The power module failure in the master cabinet and the fan
module failure in the baseband subrack are also reported to the
BCKM and are grouped into "other faults". If the fan module in
baseband subrack is faulty, replace the fan module. If the power
supply module in the master cabinet is faulty, refer to "3.10
Supply Unit (PSU)" for handling advice and solutions.
Chapter 3 Component Failure
3-11
Handling
Power