Fault Finding Guid e
Repairing a soun d m ixin g conso le r equir e s s p ecialist skills , b u t
basic Fault Finding is within the scope of any user if a few
basic rules are followed.
•Get to know the Block Diagram of your console (see inside
rear cover)
•Get to know w hat each compon ent in the system is
suppo sed to do.
•Learn where to look for common trou ble spots.
The Block D i agram (see inside rear cover) is a representative
sketch of all the components of the console, showing how
they connect together and how the signal flows through the
system. Once you h ave become familiar with t he various
component blocks you w ill 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 sp ecific fun ction an d on ly by get tin g
to know what each part is supposed to d o w ill you be able to
tell if ther e is a gen uin e fa ult ! Many ‘fault s’ are t he r esu lt of
incorrect connection or control settings which may have been
overlooked.
Bas ic Troubleshooting is a process of applying logical
thought to the signal path through th e console and tracking
down the p roblem by elimination.
•Swap input connections to check that the source is really
present. Check both Mic and Line inputs.
•Eliminat e sections of the cha nnel b y using the in sert p oint
to re-route the signal to other inputs that are kn own to be
working.
•Route chan nels to differ ent o utp uts o r to a uxiliar y sen ds t o
identify problems on the Master section.
•Compare a suspect channel with an adjacent channel
which has been set up id entically. Use PFL and AFL to
monitor the signal in each section.
Pag e 9