Power Supply; Output From Control Console To Fg309; Fg309 Belt Start - Trackmaster FVX325 Field Service Manual

Power Supply

The power supply circuit forms the +12 volts (unregulated) from input power
(120/230VAC). The +12 volts is then used to form VLED, VCC and +5 volt signal used
in the control console, sensor circuits and the motor drive circuits.
All voltage checks are done with treadmill power turned on, and all connections or
components in place.
+12 volts (unregulated)
Input voltage (120/230VAC) is fed through two ¼ amp fuse breakers to SW1 on the power
supply.
A/C scale
120/240VAC
present at JP2 Pin 2 to JP2 Pin 4 (Voltage from ¼ FB's)
D/C scale
16.8 volts
present at cathode D5 to DC Ground (DC ground is available at J3 Pin 5 (black)
The Input to the three voltage regulators on the Power Supply is the same unregulated 12
volts seen at the output of diode D5. Voltage regulator input is Pin 1, DC Ground is Pin 2 and
Output is +5v at Pin 3.

Output from control console to FG309

FG309 Belt Start

Motor On (motoron) received from control console at J4 pin 6. Voltage levels provided for
idle and active states.
Idle (D2 Start Indicator Lamp not lit)
D/C scale
0 volts
U2 Pin 1 (input from control console) to DC Ground
14.00 volts
U2 Pin 5 (output to inverter) to DC Ground
14.00 volts
J3 Pin 2 (violet) to J3 Pin 3 (white)
Motor On (D2 Start Indicator Lamp lit)
D/C scale
14.00 volts
U2 Pin 1 (input from control console) to DC Ground
D/C scale
14.00 volts
U2 Pin 5 (output to inverter) to DC Ground
D/C scale
0.0 volts
J3 Pin 2 (violet) to J3 Pin 3 (white) output to inverter
7-4
FVX, TMX Series Service Manual
TRACKMASTER
August, 2006