Huawei Airbridge cBTS3612 Maintenance Manual page 70

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station
Unplug the cables connecting the boards or modules to the
backplane and take the boards or modules out.
Unplug the backplane cables
6)
Unplug the cables on the back of the backplane, such as the
data cable, alarm cable, power cable, etc. Make notes of the cable
connection mode and order.
7) Take off the metal shielding (For baseband subrack only)
Before removing the backplane of the baseband subrack, take
off the metal shielding. To do this: Unscrew the bolts that fix the
shielding to the cabinet. Be sure to keep the bolts safe and do not let
them fall into the cabinet, for that may cause short -circuiting.
Remove the backplane
II.
1) Loosen and remove the screws that fasten the backplane
onto the cabinet. Be careful to keep the screws in a safe
place and not to drop the screws in the cabinet, or it may
cause a short -circuit.
Take the backplane down slowly with both hands.
2)
&
Note:
1. For detaching the backplane from the baseband subrack, remove its metal
shielding cover first. Put the shielding cover back when the baseband backplane is
installed.
2. As the backplane is huge in size and rather heavy, to prevent an accident, get
some people to help when handling it.
Chapter 4 Component
4-5
Replacement