Maintenance and fault finding
100 Block Up Converter Systems 6700/6900 series User Guide
Finding faults in the redundancy switching
equipment
A fault in the redundancy switching equipment is likely when
a fault in the on-line BUC or high-power BUC system does
not cause streams to switch, or you cannot manually switch
streams. If this occurs, view the control panel of the
redundancy controller to assess the probable cause of the fault.
The probable faults for the redundancy switching equipment
are:
•blown fuses
• inconsistent stream selections, indicated by two BUC
Switch LEDs and two LNB Switch LEDs illuminated
green on opposing streams
• faults in the RF waveguide switches, indicated by four
BUC Switch LEDs and/or four LNB Switch LEDs
being illuminated red
• faults in the redundancy controller, indicated by the
Redundancy Controller Status LED illuminated
red, following the elimination of blown fuses, and RF
waveguide switch and cable faults
Blown fuses
If the control panel of the redundancy controller indicates that
any fuses are blown, replace the fuses (see page 102,
Replacing fuses in the redundancy controller).
Inconsistent stream selections
During stream selection, an RF waveguide switch may fail to
switch completely between the streams. In this situation, the
BUC Switch or LNB Switch LEDs indicate that one stream
is selected in transmit and the other selected in receive. If this
fault is indicated, continue from page 103, Resolving
inconsistent stream selections.
To Next Page
Loading...
Need help?
General
