Avoid running audio cables or placing audio equipment,
close to thyristor dimmer units or power cables.
Noise immunity is improved significantly by the use of low
impedance
sources, such as good quality professional micro-
phones or the outputs from most modern audio equipment.
Avoid cheaper high impedance microphones, which may suf-
fer from interference over long cable runs, even with
well-made cables.
Fault Finding Guide
Repairing a sound mixing console requires specialist skills, but
basic Fault Finding is within the scope of any user if a few ba-
sic rules are followed.
•
Get to know the Block Diagram of your console (see back
of this manual)
•
Get to know what each component in the system is sup-
posed to do.
•
Learn where to look for common trouble spots.
+
+
+
+
+
+
-
-
-
Source
Source
Source
Input
Input
Input
GND
LINK
GND SENSE
GND
LINK
GND
LINK
GROUND COMPENSATED TO BALANCED
UNBALANCED TO BALANCED
UNBALANCED TO UNBALANCED
If ground link absent, or mains earth isolated from
source ground, then connect shield at both ends
Page 10
