Sirius 800 www.snellgroup.com Crosspoint Faults and Replacement
Issue 1 Rev 1 Page 72 © 2014 Snell Limited
7.4 Audio Crosspoint Failure
If an output module detects an error in the transport stream from the main audio crosspoint
module or if the stream is not present it will use the transport stream from the redundant audio
crosspoint module.
At this point the crosspoint matrix is still capable of setting all audio routes but redundancy
protection has been lost. This failure must be addressed immediately to regain redundancy
for the crosspoint matrix.
7.4.1 Replacing a Failed Audio Crosspoint Module
A failed audio crosspoint module can be replaced by either using the Door PC to move the
routes from the failed module to the working module or without using the Door screen. Both
methods are described in this section.
• Replacing an audio crosspoint module using the Door PC, see section 7.4.1.1.
or
• Replacing an audio crosspoint module without using the Door PC, see section
7.4.1.2.
7.4.1.1 Replacing an Audio Crosspoint Module using the Door PC
If one or more routes fail on a video crosspoint module this will be displayed on the Audio
Crosspoint Matrix Status screen. A typical example of how the buttons will look is listed below
(see Fig 36. on page 70 for button and parameter locations):
• Fail Found indicator - Red
• Fault Present indicator - Red
• First Failure Detected - Failed Incoming Stream and/or Failed Outgoing
Stream will display the first failed stream(s)
• XpntCardNone - Grey
• XpntCardRedundant: Grey
• XpntCardMain: Yellow (indicates the main audio crosspoint has failed)
1. Touch the Free Failed Crosspoint button to move all of the routes from the failed
audio crosspoint module to the other audio crosspoint module.
2. Check that the “Route Active” LED on the failed audio crosspoint module is off and
then remove the failed audio crosspoint module (see section 7.3.1 for the location of
the Route Active LED).
• Any failure needs addressing immediately to retain protection.
• For information on replacing the failed crosspoint card see section 7.4.1 below.
• The fan assembly should be placed back into the closed position as soon as
possible after opening, as this ensures correct ventilation of the frame. Failure to
do this will result in failure.
• In practice the maximum time that a fan assembly can be left open will depend on a
number of factors such as; ambient temperature, frame loading, crosspoint
routings, etc. To ensure correct operation under all conditions the fan assemblies
should be left open for no more than 4 minutes at a time.
• Take care not to trap any cables when opening and closing the fan door.
To Next Page
Loading...