Replacing The Interface Unit - Nokia MetroSite Maintenance Manual

6.6

Replacing the interface unit

Replacing the interface unit
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Connect your Nokia BTS Manager PC to the LMP connector on the
interface unit.
Block the BCF locally with the Nokia BTS Manager or request a BCF lock
from the BSC.
Switch the BTS power supply unit to the stand-by position.
Disconnect the interface unit's cabling, including the BTS Manager
connection.
Open the upper and lower retaining screws of the unit with a T10 Torx
driver. Loosen the screw enough to remove the unit, but leave them
engaged in the threads to allow easy refitting.
Remove the interface unit. Pull the unit out from the front until the unit
comes to stop, then pull the unit out from the side. See Figure 7.
Unpack the new interface unit.
Insert the new interface unit to the unit's slot from the side of the cabinet.
Push the unit towards the backplane. Do not use excessive force!
Tighten the interface unit retaining screws to 1.5 Nm (1.11 lb ft) with a T10
Torx driver.
Reconnect the unit's cabling, including the BTS Manager connection.
Switch the BTS power supply unit ON.
With BTS Manager, right-click the BCF object in the Equipment View
window and carry out a BCF Object Reset, or, if locked from the
BSC/NMS, request an unlock from the BSC/NMS (the BCF reset is
automatic in this case).
Re-set the 13 MHz clock according to the instructions given in Chapter 4.
Draft
Maintenance
DN9913495
Issue 3-0 en