Speed calibration How to calibrate sta trac 4500Hr treadmill?

WARNING: DURING THE ENTIRE CALIBRATION PROCESS, STAND ON THE PLASTIC SIDE RAILS ONLY!
DO NOT STAND ON TREADMILL WALKING BELT!
CALIBRATION
1. Turn off treadmill.
2. Simultaneously press PROGRAM, ENTER, and START/STOP for about 3 seconds.
3. Maximum speed will be shown in the TIME/PACE display followed by an "E" for English units or an "N" for metric
units. Press START/STOP to change from English units to metric units.
4. Press ENTER.
5. Press START/STOP. Incline and speed will calibrate simultaneously.
6. When successfully completed, TIME/PACE display will show CAL PASS.
7. Press POWER. Your treadmill is ready for use

Ok. So the first thing to try is to calibrate the speed.
You do this by doing the following:

• With the SAFETY KEY in place, hold the ELEVATION UP and SPEED DOWN buttons for five seconds. The console will beep twice, "ENG0" will appear in the Distance window, and a number will appear in the Elevation window.
• Press SELECT until "ENG3" appears; this is for Auto-Calibration.
• Press START to Auto-Calibrate.
• The treadmill will calibrate minimum and maximum speed, and minimum and maximum elevation. When Auto-Calibration is complete, the treadmill will reset to User's start screen. This process takes three to five minutes.

Make sure there are no errors. . .and that the speed goes from super slow to super fast and then stops. . .. if it stays slow. . or stays fast. .or error code appears during calibration, there is a problem.
If after a good calibration sequence, if it still does the stopping and E-1 after 10 seconds. ., then you need to (Power off and disconnect treadmill). . .then unplug the speed sensor from the lower power board, blow into the connector on the wire, and add a little contact cleaner spray to the connector on the board.
Recap: If it actually runs. . .but stops after a few seconds. . but the calibration runs and passes fine. .. .more than likely it is a speed sensor misread or a faulty speed sensor.

See page 19.
http://www.sportsmith.net/images/product_support%5Cstartrac%5CTechnical%20Manuals%5CTreadmills%5CSvcMan%20TR4500.pdf

The calibration procedure can be found in the service manual.

http://www.sportsmith.net/images/product_support%5Cstartrac%5CTechnical%20Manuals%5CTreadmills%5CSvcMan%20TR4500.pdf

Call Treadmill Doctor at 800-750-4766 and they will walk you thru the install.

http://www.treadmilldoctor.com/?utm_source=fixya&utm_medium=CPC&utm_campaign=Mendi

yes you must read the instruction manual for software calibration.
or open the hood motor, and read the instruction attached.
or you must call to York supply for customer service and ask them where is located in case that you will not find them.

God bless you

1) Run the software calibration for diagnose, troubleshooting.
2) However adjust the reed switch, clean, and tight any wires connector see the diagram
3) adjust the speed sensor, clean, and tigh the wires connector see the diagram attached.

Dear Sir:
Please run the software calibration for easy diagnose and troubleshooting and fixing. Clean very well the speed sensor, and tight the connector.

sincerely. God bless you

Good day.
You need to Calibrate the treadmill.
Open the Motor Cover , you will see the instruction for to calibrate the machine, with Wiring diagram.
Follow the steps.
Blessing
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Basic Treadmill Calibration

I have a NordicTrack C2155. Incline not working. There is a schematic inside. There are red, white, & black wires from the circuit board to the incline motor. Unplug the treadmill and have a licensed electrician construct a flying lead cord with a male spade on neutral and female spade plug on hot. Connect neutral to white and hot to where either red or black were connected. Plug in to see if the motor runs. Careful to remove power when the incline reaches its limit and reverse direction. If the motor runs in both directions, the motor is good. Follow the black two conductor wire to the circuit board and unplug from board. Check continuity across this switch. Run motor and this should toggle off and on. If all this checks out then the problem must be with the circuit board. On my treadmill, the schematic says that +5v should supply the sensor, but I only get +3.3v, which is TTL level. The drive motor sensor supply is +5v. The incline motor doesn't even show a sign of trying to run. Either the output transistor is burnt out or the low voltage caused an error so that it does not try to run the motor. Either way, I'm quite certain that a new controller board will remedy the problem.