JohnsonFit Vision T9800HRT, Service Manual

Page: 40 / 44

40
CORRECTIVE ACTION PROCEDURES – Speed Issues
Speed Feedback Issue
Enter Magnet Count
screen
Magnet count
= treadmill #
of magnets
Adjust magnet count
to match number of
magnets
Re-run test
Manually rotate belt and check
for only 1 speed pulse on
interface board per magnet
(check all magnets)
OK?
No pules
for either
magnet
Pulse
only one
magnet
Multiple
pulse per
magnet
Perform steps in order listed until
problem resolved.
1.
.Check connections
2.
.Check magnet
orientation (correct
poles)
3.
.Check sensor
mounting
4.
.Replace sensor w/
known good sensor
5.
.Replace interface PCB
with known good PCB
N
Y
N
N N N
Perform steps in order listed until
problem resolved.
1. If reed type sensor replace
with Hall type sensor or
correctly orient sensor.
2. Check connections
3. Check sensor mounting
4. Replace sensor w/ known
good sensor
Perform steps in
order listed
until problem
resolved.
1. Check magnet
orientation
(correct poles)
2. Check sensor
mounting
3. Replace sensor
w/ known
good sensor
Perform steps in order listed
until problem
resolved.
1. Check connections
2. Check magnet
orientation (correct
poles)
3. Check sensor
mounting
4. Replace sensor w/
known good sensor
5. Replace interface
PCB with known
good PCB
Y Y Y
Enter effective
diameter screen
of firmware
setup
Setup effective
diameter as
described in
system
calibration
section of this
document
Problem
Fixed
Re-calibrate
system
Done
Perform steps in order listed until
problem resolved.
1. Check connections
2. Check magnet orientation
(correct poles)
3. Check sensor mounting
4. Replace sensor w/ known good
sensor
5. Replace interface PCB with
known good PCB
6. Replace console PCB with
know good PCB
Y
N