Horizon Fitness APC-61 Manual page 25

2-1 blinks on the Display (Backgauge Does Not Operate) Part 4
Motor has burned out
Backgauge is moved by 2 motors. Above all,
high speed motor repeats driving in the normal
and reverse direction according to using condi-
tion. For each motor circuit, there is 5A fuse.
However, after using for many years, motor
insulation weaken gradually and motor coil
burns out without blowing of fuse.
Control Box
6
5
4
3
2
1
TAN-1
To check motor coil,
For high speed motor:
Check continuity among pins 4, 5, 6 on TAN-1
on control board.
For low speed motor:
Check continuity among terminals 12, 14, 16
on electromagnetic contactor VC-1 in control
box.
Brake surface smuts.
High Speed
Low Speed
Motor
Motor
A 20 16 14 12
VC-1
A 19 15 13 11
There is a gap between brake and armature for
0.15 or 0.30mm. when brake surface smuts
with metal powder because of surface wear,
semi-brake condition occurs and drive system
of backgauge becomes heavier. In this case,
clutch operation becomes dull and correct
pulse does not rise. Therefore, blinks on the
display. Remove the metal powder with com-
pression air or wipe off paper.
Brake
Encoder
0.15 to 0.3mm
Coupling
Armature
2-5