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6300/6310 Treadmill Electronics Repair Manual – Troubleshooting
ERR 3 Troubleshooting
Inspect the optic sensor and other components as follows.
Optic Sensor
z Optic sensor wheel – Make sure that the optic sensor wheel rotates securely, without wobbling, between
the black optic sensor nubs. Realign and tighten if necessary. If optic sensor wheel teeth are missing or
bent, replace the optic sensor wheel.
z Optic sensor wires – Check wire connections from the optic sensor to the drive board. Check wire
continuity .
z Optic sensor – Turn on unit power. Turn the motor flywheel with your hand. The optic sensor
indicator (LED10 on the drive board) should flicker. See MOTOR.08. If it does not light, and all parts above
are OK, replace the optic sensor.
Other
z Motor – Does the motor sputter, sometimes running fast, sometimes slow? See MOTOR.04.
If the motor tests good, replace the drive board. If the motor tests bad, replace it.
z Drive board – See above, and inspect for burnt, damaged, or loose components.
z Main program IC - Press down on the main program IC on the display to ensure a good connection.
Replace the IC if necessary.
ERR3.02