Chapter
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14-3
7. Turn on the PSMD power module switch and the turn on one after another other
power module switches into the rack voltage plane and BDS layer. If any
abnormality is found, please immediately shut down the PSMD power supply
and check it. The rack will not be powered on until the fault is removed.
8. Plug all boards into the chassis after all the above power modules are checked. If
any abnormality is found, please immediately shut down the power supply and
check it. The rack will not be powered on until the fault is removed.
9. Finally, turn on in turn the power switches of the HPA. If any abnormality is
found, please immediately shut down the power supply and check it. The rack
will not be powered on until the fault is removed.
At this point the power-on of the BTS rack is completed. By means of the front panel
indicator (Refer to Appendix H) in a base station, observe with the help of the BSC
background controller and test the base station.
Normal power-on procedures of ZXC10-BTSB I2 are as follows:
1. Turn on -48V power switch outside the rack to power the rack, and then Turn on
the PSMD power switch. If any abnormality is found, please immediately shut
down the power supply and check it. The rack will not be powered on until the
fault is removed.
2. Turn on in turn secondary power switches of the plug-in shelf on the voltage
plane inside the rack: first Turn on the PSMC on the voltage plane and PPM
power module switch. Then, turn on the PSMB power module switch at the BDS
layer.
3. Finally, turn on the power switch on HPA board. If any abnormality is found,
please immediately shut down the power supply and check it. The rack will not
be powered on until the fault is removed.
14.3 Power-off Procedures
The power-off procedures of ZXC10-BTSB I2 are the reversed process of power-on,
shown as follows.
1. Turn off the HPA power switch.
2. Turn off the secondary power switches of the shelves of the voltage planes and
the BDS layer: first PSMB and then PSMC.