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The Block Diagram is a representative sketch of all the com-
ponents of the console, showing how they connect together
and how the signal flows through the system. Once you have
become familiar with the various component blocks you will
find the Block Diagram quite easy to follow and you will have
gained a valuable understanding of the internal structure of
the console.
Each Component has a specific function and only by getting
to know what each part is supposed to do will you be able to
tell if there is a genuine fault! Many ‘faults’ are the result of
incorrect connection or control settings which may have been
overlooked.
Basic Troubleshooting is a process of applying logical
thought to the signal path through the console and tracking
down the problem by elimination.
• Swap input connections to check that the source is really
present. Check both Mic and Line inputs.
• Eliminate sections of the channel by using the insert point
to re-route the signal to other inputs that are known to be
working.
• Route channels to other outputs to identify problems on
particular outputs or the Master section.
• Compare a suspect channel with an adjacent channel
which has been set up identically. Use PFL to monitor the
signal in each section.
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