an unacceptable load has been connected to either output. The amplifier will not run until the offending
connection has been removed: So switch off and remove all output cables and also check for short circuits
or wrong load, (Impedance is too low for safe operation).
DO NOT SWITCH ON AMPLIFIER BEFORE CONNECTING THE OUTPUT CABLES AND LOADS
Under normal conditions the trip indicator should never light. In extreme overload conditions it may come
on, but it is usually proceeded by very heavy distortion. If this happens then turn down amplifier volumes,
then wait until the amplifier has cooled. (indicated by cold air coming out of the air outlet), turn the
amplifier volumes back to a reasonable setting, taking note of the peak indicators on the bar graph.
If the problem persists, firstly the cooling system for the amplifier should be checked. , I.e., is the airflow
obstructed by something against the grilles, or is the amplifier enclosed in a sealed rack with no air vents.
If the trip light still fails to extinguish after making these checks, then there could be an internal fault in
the amplifier and the relevant speaker(s) have been disconnected to protect them. Advice should be sought
from your dealer.
POWERING UP
You turn the amplifier off by using the little black rocker switch on the front panel.
Please note: it is good practice to turn down the channel volume controls during switch on as precautions
against speaker damage, As this can be caused by instant high level feedback from an open channel mixer and
mic, or system instability.
AMPLIFIER MAINTENANCE
The amplifier contains no user serviceable parts inside. Maintenance should be mainly preventative, taking
care to follow the previous instructions, to ensure long term reliability. Due attention should be paid to the
condition of all speaker and mains interconnection leads and connectors. If required the outside of the
amplifier can be cleaned using a damp, lint free cloth. Do not clean using solvents, detergents or abrasives.
FAULTS AND THEIR LIKELY CAUSES
Although the greatest care has been taken in the manufacture of the power amplifier, the possibility remains
that faults could occur during use or difficulties could be experienced during initial installation.
The cause however will rarely be found to be the internal amplifier. Below is a list of symptoms and possible
causes. Some of the suggested causes may appear obvious but they can be easily overlooked.
Under no circumstances should you open the amplifier: this is dangerous, will expose high voltages, and will
invalidate all rights under the guarantee.
1.
After turning the ‘power’ switch the ‘power’ indicator does not light.
The mains plug is not pushed far enough into the amplifier – There is not supply at the mains socket.
Check using an alternative electrical appliance.
The mains fuse is broken, located on the rear of the amplifier, replace using appropriate 32mm fuse.
2.
When the volume controls are advanced no sound is heard.
No input signal connected to input socket, check to see if bar graph lights are showing a level.
No speakers connected to output sockets.
Mono input signal not connected to correct channel, move input plug to right channel.
3.
Even when the output is low, the output sounds distorted.
The speaker leads have a faulty connection in the plug or damaged cables.