Owner`s manual

26 | 2008 AFG Service Seminar [rev 1.3]
Section Two | Horizon Fitness “5-Step” Diagnostic Process
3 | Proper Motor Function
• Verify that the treadmill is properly lubricated (Reference Maintenance Section p17.) and drive
motor is operating at the proper amperage rating. To verify the current draw, place a clamp
meter around the red motor wire. If a clamp meter is not available, an additional wire harness
can be produced to measure amperage with a standard voltmeter.
NTC
C1
30A 120/240V AC
JQX-15FS-A
COIL 12 VDC
C US
CQC
CHIN A
30A 120/240V AC
JQX-15FS-A
COIL 12VDC
C US
CQC
CHIN A
DLS2
D1
NTC
D6
C8
D3
FZ
ZJ
DW
R6
R8
Q1
Q2
Q3
R7
R9
Q4
UP
D5
R5
TP1
R14
C9
D9
R17
TP2
BL
R29
TP4
JOHNSONFITNESS
D10
SGND
R35
Q9
D17
C34
R27
R26
R28
JP5
C30
U3
U1
D18
D20
R32
R33
C33
07
08
D19
R18
D21
DLS3
R24
Q10
C20
L3
12
C14
R10
C15
R11
C16
R12
C17
R13
SJED08043EE
R19
LED2
LED3
LED4
LED5
WJ28025T
04 08
02.31
• Remove the brush covers on the drive motor and inspect the brushes and the motor commutator
for any uneven wear. If the surface of the motor brush is pitted, rough, has burn marks, or the
commutator has a black residue on it, replace the motor.
4 | Proper Speed Calibration
• To ensure proper belt speed and proper calibration use engineering mode to verify that machine
is running in MPH not KM (all models). (Reference Engineering Mode Section p44.)
• Auto-calibrate the machine from engineering mode if the belt speed is erratic or the belt speed
does not correspond to what is displayed on the console.
(Reference Engineering Mode Section p44.)
5 | Voltage Checkpoints
• Verify that proper voltage is being transferred through the console cable.
(Reference Voltage Checks p35.)
If the techniques described in the ve-step diagnostic process did not resolve the
problem, reference the symptoms in the table of contents and review other possible
causes in the troubleshooting section.
Red Motor
Connection
Black Motor Connection
Black
Motor Wire
Red Motor
Wire