Diagnosing Faults
are constantly on the move, and hence are much more likely to incur damage.
Once you have established that the problem lies within the console, you need to determine whether the problem is due to an
operational error, or hardware failure. The most common, and easiest to solve, problems are operational errors, and you should
hardware fault. In most cases, a fault can be located in minutes, with little technical knowledge. However, ensure that you read
the paragraphs on Replacing Modules later in this section before attempting any maintenance.
Audio Faults
Audio faults will most likely manifest themselves as either partial or total signal loss, or distortion of the audio signal.
Referring to the Matrix Hardware Signal Flow Block Diagrams, you can see that there are many possible signal paths through the
console. Logical routing, and monitoring of signals at different points, will enable you to easily locate the faulty module.
To give an example of an audio fault, examine the following problem. By working through this example you will see the basic
You have several channels, all centre panned, routed to the REC bus. When monitoring the Rec Bus you notice that the audio
through several stages of hardware before reaching the monitors.
We can start to isolate the problem by checking the signal path halfway through the chain.
assembly. Route an alternative stereo source to the monitors, such as EXT 1.
Appendix G - Service
141
Matrix
2
Owner’s Manual
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