NordicTrack Professional Series 4000 Treadmill English Manual - Page 28

4. SYMPTOM: THE WALKING BELT IS OFF-CENTER a. If the walking belt has shifted to the left: Remove the key and unplug the power cord. Using the included allen a wrench, turn each rear roller bolt 1/4 of a turn in the direc- tion shown. Be careful not to overtighten the walking belt. Then, plug in the power cord, insert the key, and use the treadmill for a few minutes. Repeat until the walking belt is centered. b. If the walking belt has shifted to the right: Remove the key and unplug the power cord. Using the included allen b wrench, turn each rear roller bolt 1/4 of a turn in the direc- tion shown. Be careful not to overtighten the walking belt. Then, plug in the power cord, insert the key, and use the treadmill for a few minutes. Repeat until the walking belt is centered. c. If the walking belt slips when walked on: Remove the key and unplug the power cord. Using the included allen c wrench, turn both rear roller bolts clockwise 1/4 of a turn. When the walking belt is properly tightened, you should be able to lift each edge of the walking belt 1 to 2 inches off the walking platform. The center of the walking belt should just touch the walking platform. Make sure to keep the walking belt centered. Then, plug in the power cord, insert the key, and run the treadmill use a few minutes. Repeat until the walking belt is properly tightened. 5. SYMPTOM: THE CHEST PULSE SENSOR DOES NOT FUNCTION PROPERLY a. If the chest pulse sensor does not function properly, see CHEST PULSE SENSOR TROUBLESHOOTING on page 10. b. If the chest pulse sensor still does not function properly, the battery should be replaced. To replace the battery, locate b the battery cover on the back of the sensor unit. Insert a coin into the slot in the cover and turn the cover counter- clockwise to the "open" position. Then, remove the cover. Next, remove the old battery from the sensor unit. Insert a new CR 2032 battery, making sure that the writing is on top. In addition, make sure that the rubber gasket is in place in the sensor unit. Reattach the battery cover and turn it to the closed position. Cover CR2032 Battery Rubber Gasket 6. SYMPTOM: THE INCLINE OF THE TREADMILL DOES NOT CHANGE CORRECTLY OR DOES NOT CHANGE WHEN IFIT.COM CDS AND VIDEOS ARE PLAYED a. With the key in the console, press one of the INCLINE buttons. While the incline is changing, remove the key. After a few seconds, reinsert the key. The treadmill will automatically rise to the maximum incline level and then return to the minimum level. This will recalibrate the incline system. 28