SoundCraft Spirit Live 4 - Manual (Page 11)

Fa ult Finding Guide Repairing a sou nd m ixing console requ ires sp ecialist skills, bu t
basic Fault Finding is w ithin the scop e of any u ser if a few
basic ru les are follow ed .
•
Get to know the Block Diagram of you r console (see insid e
rear cover)
•
Get to know w hat each com p onent in the system is
su p p osed to d o.
•
Learn w here to look for com m on trou ble sp ots.
The Block D iagram (see insid e rear cover) is a rep resentative
sketch of all the com p onents of the console, show ing how
they connect together and how the signal flow s throu gh the
system . Once you have becom e fam iliar w ith the variou s
com p onent blocks you w ill find the Block Diagram qu ite easy
to follow and you w ill have gained a valu able u nd erstand ing
of the internal stru ctu re of the console.
Each Component has a sp ecific fu nction and only by getting
to know w hat each p art is su p p osed to d o w ill you be able to
tell if there is a genu ine fau lt! Many ‘fau lts’ are the resu lt of
incorrect connection or control settings w hich m ay have been
overlooked .
Basic Troubleshooting is a p rocess of ap p lying logical
thou ght to the signal p ath throu gh the console and tracking
d ow n the p roblem by elim ination.
•
Sw ap inp u t connections to check that the sou rce is really
p resent. Check both Mic and Line inp u ts.
•
Elim inate sections of the channel by u sing the insert p oint
to re-rou te the signal to other inp u ts that are know n to be
w orking.
•
Rou te channels to d ifferent ou tp u ts or to au xiliary send s to
id entify p roblem s on the Master section.
•
Com p are a su sp ect channel w ith an ad jacent channel
w hich has been set u p id entically. Use PFL and AFL to
m onitor the signal in each section.
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