LifeSpan TR800-DT5 Owner's Manual page 40

Treadmill Desk Operations
Problem: "dc-6" appears in the display.
Solution: Turn the treadmill desk power switch off. Unplug and re-plug the
connections made in Step C on page 22. Make sure the thumb screws are
properly tightened. Turn the treadmill desk power back on and check to see if
it functions properly.
Problem: The desktop surface is not level.
Solution: Check to make sure the base feet are on a level surface. Make sure
the manual height adjustment knobs are in the same location holes on each
leg.
Problem: The treadmill belt is beginning to slip and needs to be tensioned.
Solution: Refer to the owners manual included with the treadmill base.
Problem: The treadmill belt is beginning to drift to the left or right and
needs to be aligned.
Solution: Refer to the owners manual included with the treadmill base.
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