Dove Systems SM 6 - Manual (Page 5)

The crossfader must be in the upper, or "X" position for the footswitch to work properly.
The SM6 controllers can be slaved together in a daisy-chain to control 12 or more channels. Two or
more controllers are connected together at the accessory jacks. The first controller becomes the
master with its master and X-Y crossfader controlling all the slaves in the chain. The slave units'
masters and X-Y crossfaders are inactive and must be down to work properly. The timers are all
independently functional. Note: Units with serial numbers 63049 or earlier must be factory modified
before they can be slaved; 63050 or later will do this automatically.
The BLACKOUT switch is located near the Master. Operating this switch downward causes an
immediate cut-off of the output of all dimmers on the console. Turning the switch back on without
changing the dimmer settings will cause all channels to "switch on" to the settings indicated.
The INDICATOR LEDS indicate that the console is on and is receiving power. BUMP BUTTONS
cause the output of the respective channels to go to "full" when depressed by the operator. The
BUMP, or "flash", BUTTONS override all controls, including BLACKOUT.
The channel fuses on the back panel protect the dimmers against overloads and some short circuits.
Should that happen, and the fuse blows, the channel will be dead, and the fuse should be replaced
with exactly the same type and Ampere rating (ABC-10).
Dead shorts and high overloads will blow the fuse, but may also cause Triac failure. Clear the fault
and replace the fuse. If the channel remains dead, or is ON with no control over its intensity, the
Triac has been blown and must be replaced. Contact the factory for repairs (See "OBTAINING
SERVICE").
The filter chokes associated with each dimmer are provided to reduce the electrical and mechanical
lamp noise which is a by-product of phase control dimming with Triacs. To achieve this noise
reduction, the choke itself generates some audible buzz. Because of this, it is recommended that the
dimmer pack be located out of the playing space if the noise is objectionable.
TROUBLESHOOTING
The SM6 is a ruggedly designed unit. It can withstand occasional mistreatment, but, like any precision
instrument, it should be treated with care and respect.
Often what appears to be a problem with the dimmer is something else. A review of the following
paragraphs and the troubleshooting chart may save you a long distance phone call, a trip to the
Service Center, or the cost of shipping and/or repair. Even if something is still wrong, this process
will help you explain the malfunction to the service technician.
Note that although only the upper motor base inlet need be connected to operate channels 1 through
3, BOTH inlets must be connected in order to operate channels 4 through 6.
Read the operating instructions carefully. BE SURE you know how to operate the equipment. Do
not expect this equipment to operate exactly like others. Many apparent failures result from not
being familiar with the operating characteristics of the unit.
There are also some basic checks that you can do the help isolate the problem. There are two forms