Brother MD-602, Service Manual, Page: 19 / 76

13
MD-602, 612
MD-602-1
C O N T R O L B O X
T Y P E
B C 4 6 7 0
N O .
B 0 1 9 A 1 1 0 1
S I N G L E P H A S E
O U T P U T 4 0 0 W
V O L T S
2 2 0 2 3 0 2 4 0
H E R T Z 5 0 / 6 0
F O R
M D - 6 0 A
MADE IN JAPAN
BROTHER INDUSTRIES, LTD.
7. Using the control box
7.1 Before turning on the power switch
Control box rating plate (Example: Single-phase 220 V
specifications)
q
w
e
Model
Power
supply
phase
Power
supply
voltage
•
Check the power supply and the control box specifica-
tions.
1. Model
q
MD-602 (for single-phase power supply)
MD-612 (for three-phase power supply)
The model should match the power supply phase
w
.
2. The power supply voltage
e
indicated is an AC volt-
age.
3. The power supply frequency can be either 50 Hz or 60
Hz.
Speed adjustment knob
7.2 Power switch and power indicator
•
When the power ON switch
q
is pressed, the power
indicator (green)
e
lights and the power turns on.
•
When the power OFF switch
w
is pressed, the power
indicator (green)
e
turns off and the power switches
off.
7.3 Setting the sewing speed
•
Turn the speed adjustment knob
r
on the front of the
control box clockwise to increase the sewing machine
speed (the speed corresponding to the treadle depres-
sion amount), and turn it counterclockwise to reduce
the speed.
•
The maximum sewing speed that can be set is the sew-
ing speed which is determined by DIP switch settings.
Refer to “7.5.2.1 DIP switch 1 functions”. The minimum
sewing speed is the sewing speed when the treadle is
at the low-speed sewing position.
1. Are all connectors connected correctly?
•
Synchronizer connector
•
Sewing machine connector
•
Ground cord
Refer to “5.6 Connecting the cords”.
2. Is the sewing machine cord touching the V-belt?
Is the belt tension correct?
Refer to “5.1 Installing the motor to the work table” and
“5.2 Attaching the belt”.
3. Does the sewing machine operate when turned gen-
tly by hand?
q w
r
e
Power indicator
Confirm that the power supply matches the motor and the control box specifications before turning on the
power switch. The motor, control box or sewing machine could be damaged if the supply voltage is too high.
CAUTION