Treadmill varies the speed by itself
Possible causes:
1. Keypad is stuck.
2. PCB is damaged.
3. Grounding
Fix:
1. Remove the keypad and verify the keypad is stuck.
If it is stuck, replace with a new keypad.
2. If speed or incline still changes by itself, replace
the PCB and refer to "Engineering Mode Guide" to
re-program all the parameters.
3. Each component shall be properly grounded to the
frame and the frame shall be earthed through the
third prone pin of the power socket.
Remarks: The symptom here is the speed indication
on the console will vary with the speed.
6-10 Revision: 1.0 Date: 2001-06-01