Figure 5-13
Position of the RFU
Step 3
Label the cables connected to the RFU panel, and then disconnect the cables.
Step 4
Use a Phillips screwdriver to loosen the four captive screws on the RFU panel.
Step 5
Insert the standard handle into the RFU to the corresponding keyhole on the RFU panel, and
turn the handle key by 90°. Pull out the module by holding the handle key using one hand, and
then remove the RFU using the other hand, as shown in
.
Figure 5-14
Removing the RFU
Step 6
Slide the new RFU along its guide rail until the module is in position (with obvious resistance).
5 Replacing Components of the BTS3900
BTS3900 WCDMA
Site Maintenance Guide
5-20
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Issue 07 (2009-08-30)