Except on switch on, this red LED 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.
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 fails to extinguish after 30 seconds from cold, then there is 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 can turn the amplifier on by using the black rocker switch on the left hand side of the front panel.
Please note: it is good practice to turn down the channel volume controls during switch on as precaution
against speaker damage.
This can be caused by instant high level feedback from an open channel mixer and mic, or system instability.
On initial switch on the ‘trip indicator’ will light, this should go out after a few seconds (when the amplifier
supplies have stabilised).
SHOULD A/C POWER INTERUPTED DURING OPERATION TURN DOWN THE VOLUMES OR
ZERO THE INPUT SIGNALS UNTIL A STABLE A/C SUPPLY IS BACK ON LINE
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 Ch As under the guarantee.
1.
After turning the ‘power’ switch the ‘power’ indicator does not light.
The mains plug is properly connected into the amplifier, or 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 1oA quick blow 20mm fuse.
2.
When the volume controls are advanced no sound is heard.
Wait 10 seconds, amplifier may not be stabilised after switch on.
No input signal connected to input socket, check to see if present signal lights are showing.
No speakers connected to output sockets.
Mono input signal not connected to correct channel, move input plug to Ch A channel.
5
