Ac Power Supply; Dc Power Supply - Dynacord MV 503 Owner's Manual

CAUTION
We strongly recommend that you leave the connection of the appliance to the qualified and experienced
service technician who is specialized in connecting electrical and electronical equipment. Do not take the
risk of electro-shock or shock hazard.
To reduce the risk of electro-shock, all connections have to be accomplished before it is permissible to
connect the amplifier to the mains supply.
Before connecting the appliance to the mains supply, once again make certain that all connections are
carried out correctly and that no short-circuits exist.
The overall sound reinforcement installation has to be in accordance to the laws, regulations, standards,
and guidelines that are relevant and applicable in the country where the equipment is going to be operated.

AC POWER SUPPLY

CAUTION
Before using the amplifier for the first time, make sure that the appliance's mains selector switch (8) is set
in accordance to your mains supply. Otherwise, please consult your DYNACORD dealer.
Connect the amplifier only to grounded mains outlets.
Connecting the amplifier to the mains supply (115 V AC respectively 230 V AC) has to be accomplished
by inserting the supplied mains cord into the corresponding socket (19) and afterwards plugging it into a
mains outlet.
The amplifier is factory preset to be operated on 230 V AC. Changing the mains settings has to be
performed by a qualified service technician, since the device's outer cover has to be removed using a
suitable screw driver.

DC POWER SUPPLY

CAUTION
A 24 V DC power source (i. e. a battery) has to be connected to the binding posts (20) that are covered
by a protective lid. To reduce the risk of dropping voltage to a minimum and to eliminate the danger of
damaging the battery cables by thermal overload, these cables have to be at least 2,5 mm
each. Switching the amplifier on or off is performed through the power switch (9).
DISABLING THE AUTOMATIC PRIORITY FUNCTION OF INPUT "IN1"
Internal re-programming for mixing operation avoids all other inputs from being disabled when an an-
noucement is made through the input "IN1".
1. Disconnect all power sources from the appliance
2. Loosen the 3 screws on each side of the appliance and detach the cover
3. Locate the jumper CN/7 Voice on the INPUT printed board assembly and change it to its "disable"
position (see figure)
4. Re-attach the cover of the appliance
ADJUSTING THE SENSITIVITY LEVEL FOR THE "VOICE PRIORITY" FUNCTION
1. Disconnect all power sources from the appliance
2. Loosen the 3 screws on each side of the appliance and detach the cover
3. Locatehole "F" on the INPUT printed board assembly. The trim potentiometer "VR1" sits on the
printed board assenbly underneath (see figure)
By using a small screw driver to turn the trim potentiometer clockwise, the sensitivity setting is
increased while turning it in the opposite direction decreases the sensitivity.
4. Re-attach the cover of the appliance
15
2
in diameter,