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User Manual
Airbridge cBTS3612-800 12-carrier CDMA Base Station
3)
Before the replacement of a BTRM, take apart the corollary BRFM. When this
BRFM is installed again, note to put the optical fiber into the gap at the right
lower corner lest the optical fiber should be damaged.
4)
BTRM should be anti-static, therefore operations should be made strictly based
on operation procedures. That is to say, wear an anti-static wrist strap and
gloves and make the grounding terminal well grounded to prevent any static
electricity damaging the module.
II. Replacement Details
1)
View the BTRM alarm
Connect a portable computer with the local-end maintenance software with the
Ethernet interface of a base station BCKM and switch on Telnet to log on to the base
station. Then, view and record the fault type and software/hardware versions of
BTRM.
2)
Remove the corollary BRFM of the faulty BTRM.
3)
Unplug the optical fiber and record the corresponding optical interface location.
Then, take apart the faulty BTRM.
4)
Plug and fasten a new BTRM, and plug the optical fiber into the corresponding
optical interface.
5)
Install and fasten the BRFM.
6)
Test
Conduct a conversation test with a mobile station and view whether BTRM software
version is the one to run normally.
7)
After replacement
If the new BTRM has passed all tests, related alarms disappeared and corresponding
recovered alarms occurred, it shows that the replacement of a BRDM is completed.
2.12 Replacement of Receive LNA Distribution Unit (RLDU)
I. Note
1)
The replacement of an RLDU will interrupt any service it processes.
2)
Turn off the power switch in the switch box corresponding to this RLDU.
3)
RLDU should be anti-static, therefore operations should be made strictly based
on operation procedures. That is to say, wear an anti-static wrist strap and
gloves and make the grounding terminal well grounded to prevent any static
electricity damaging the unit.
II. Replacement Details
1)
View the RLDU alarm and block the corrresponding BTRM
Connect a portable computer with the local-end maintenance software with the
Ethernet interface of a base station BCKM and switch on Telnet to log on to the base
station. Then, view and record the fault type of RLDU.
For a BTRM which will interrupt services, execute the command of sector carrier
blocking or shut off its power.
2)
Unplug the power cables and data cables on the faulty RLDU panel.
3)
Unscrew the screws on the RLDU panel and take out the faulty RLDU along the
slot
4)
Plug and fasten the new RLDU along the slot, and set its S/W switch the same
as that of the original RLDU.
5)
Connect the power cables and data cables and bind them well.
03Q-0112-20020720-120
2 Board and Part Replacement
2-8
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