Multiband Combiner - CommScope Node AM4 Manual

5. Maintenance

5.2.1. Multiband Combiner

Danger: Electrical hazard. Danger of death or fatal injury from electrical current
inside the unit in operation. Before opening the unit, disconnect mains power.
Danger: Electrical hazard. Danger of death or fatal injury from electrical current
due to a possible short-circuit caused by incorrect handling. Make sure the
system has been correctly grounded (earthed) as described in chapter 3.2.3 and
connected via external circuit breaker (see chapter 3.2.8).
Caution: Rotating fans. Risk of injury in operation. Wear tight-fitting clothes and
disconnect mains before working inside the unit.

Note: Removal and installation of a combiner on-site must only be done by a service
technician of CommScope or by a qualified person authorized and trained for
this procedure who is observing the corresponding safety procedures required
by local, regional and country-specific regulations which have to be observed
during all times of this procedure.
Notes:
The figures in this chapter show the
combiner type with three pairs of band
ports. The procedure is exactly the same for
combiners with two band port pairs.
Unscrew the combiner and pull it
carefully with your hands.
As the long hole of the combiner's carrier plate is hooked into a screw of the modem
mounting plate, this is pulled out to a certain degree, as well:
Mounting plates of combiner and modem connected by
screw locked into long hole (seen from both sides).
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Manual for Node AM4 Page 55