Huawei Airbridge CBTS3612-800 User Manual page 42

User Manual
Airbridge cBTS3612-450 12-carrier CDMA Base Station
II. PSU fan fault
If the PSU fan runs abnormally, the red alarm indicator (Alm) on the PSU panel will be
on and the fan fault alarm will be reported at the same time. In this case, the PSU fan
needs replacing.
III. PSU output over-voltage fault
If the PSU output is more than 30.5±0.5V, the PSU will automatically stop working.
And the red alarm indicator (Alm) on the PSU panel will be on with the output
over-voltage fault alarm reported at the same time. This fault status cannot be
recovered automatically and the PSU needs replacing.
IV. PSU input under-voltage fault
If the PSU input voltage is smaller than 36.5±1V, the PSU will stop outputting any
power and the red alarm indicator (Alm) on the PSU panel will be on. Meantime, the
output over-voltage fault alarm will be reported. When the input voltage is higher than
38.5±1V, the PSU will automatically resume to normal.
V. PSU overheat fault
If the PSU runs at an excessively high ambient temperature or the heat dissipation
system does not work normally, there will also cause an excessively high temperature
inside the PSU. And the PSU will stop its output power and the red alarm indicator
(Alm) on the panel will be on. Meantime, the overheat fault alarm will be reported.
When the internal temperature decreases to certain degree, the PSU will
automatically resume to normal.
If the working ambient temperature is normal, the PSU fan will run normally. But if the
PSU is continuously overheated, this module can be considered as faulty and needs
replacing.
03Q-0112-20020720-120
6 Part Module Fault
6-12