Maintenance and fault finding
106 Block Up Converter Systems 6700/6900 series User Guide
If both coils of an RF waveguide switch have high
resistance, it is possible that the switch has burnt out. If
the resistance of the coils is within the range, the switch
may be jammed.
Checking a jammed RF waveguide switch
To check an RF waveguide switch that appears to be jammed:
1 Remove the RF waveguide switch from the waveguide
components and check for foreign material.
1 Reconnect the control cable to the RF waveguide switch.
1 Try to manually operate the RF waveguide switch using
a Remote Controller 6570 or Hand-held Controller 6560
while someone observes the internal waveguide
mechanism (see page 76, Switching between streams).
1 If the RF waveguide switch does not move, remove the
control cable and the actuator cover from the RF
waveguide switch.
Try physically rotating the RF waveguide switch by
hand.
1 If the RF waveguide switch functions correctly, reinstall
the RF waveguide switch to the waveguide components.
1 If the RF waveguide switch fails to operate correctly,
bypass the switch by connecting the LNB or BUC
directly to the receive port or transmit port of the antenna
feed respectively.
1 Return the RF waveguide switch to Codan for repair.
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