Joy Sport Marathon Owner's Manual page 30

The running belt runs
normal by itself but
disoriented when setpped
on.
No display or display not
functioning properly.
Because of some reasons, the technical parameter may has a little difference. So
we can not take it as criterion to measure our state of health, all the data is just as
a reference.
Cut off the power immediately and call our customer service if you need further
assistance. We will provide you the best service in time.
Check whether the
running belt is too loose.
The plug head not working
because of external
disturbance .
Adjusts the running belt
accordingly.
Turn off the power switch,
then turn it on in one
minute