5
Replacing a Legacy LNB-1
If you have a legacy LNB-1
,
follow the steps below to
replace the LNB-1 with an LNB-3 and filter assembly.
1.
Using a 7/16" open-end wrench, disconnect the RF
cable from the LNB (see Figure 6). To avoid
stressing the cable, hold the top of the connector
with your fingers while loosening.
2.
Cut and remove the tie-wrap securing the RF cable
to the LNB (see Figure 6 and Figure 7).
3.
Using a Phillips screwdriver, remove and discard
the four M4 screws securing the LNB to the OMT
(see Figure 7). Remove the LNB.
4.
Secure the LNB-3 and filter assembly to the OMT
using four new M4 screws (
supplied in kit
), making
sure that the LNB notch faces the OMT as shown in
Figure 8 and Figure 9. Tighten the screws to 21 in-
lbs of torque.
5.
Remove the protective cap from the LNB’s RF
connector. Then connect the RF cable to the LNB
making sure that the RF cable is aligned to prevent
any interference when the feed assembly rotates
(see Figure 9). Tighten with a 7/16" torque wrench
set to 15 in.-lbs.
6.
Secure the RF cable to the LNB using the
tie-wrap (
supplied in kit
), as shown in Figure 8 and
Figure 9. Trim the excess portion of the tie-wrap
and discard it.
7.
Continue to
“Replace the Power/Thermal Module”
.
Important!
Before removal, note the LNB orientation (the LNB
notch, shown in Figure 6 and Figure 7, faces the
OMT), and be sure to match this orientation when
installing the replacement LNB.
Figure 6: Legacy LNB-1 RF Cable and Orientation to OMT
Figure 7: Legacy LNB-1 Mounting Screws
Figure 8: LNB-3 Mounting Screws
Figure 9: LNB-3 RF Cable and Orientation to OMT
