ProForm XT90-NT23 Service Manual Download Page 18

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After removing safe key, 
treadmill can’t stop.  

1. Reed switch of console is broken.  

1. Replace with new reed switch or 

console. 

LCDs not bright, 
incomplete or imperfect.   

1. LCD light is broken. 
2. Power to console too low.  

1. Replace with new LCD or console. 
2. Check AC power is 110-120V. 
3. Check power to console.  
4.Replace lower controller.  

LCD displays not bright, 
incomplete or imperfect.   

1. LCD displays are broken.  

1. Replace with new console and calibrate 

it.  

When press “START” 
button to start treadmill, 
running belt isn’t running 
and window displays “LS” 
error message after 8 
seconds.  
 

1. Controller experienced unusual shut down; the S_D light will 

be always bright. (

Controller debugging form

2. Motor wires (red, black) aren’t plugged into controller.  
3. Computer cables not connected properly. 
4. Computer cables are broken or damaged.  
5. Motor belt is broken.  
6. Controller is broken.  
7. Motor is broken.  
8. Console is broken.  

1. Turn off power and reset the treadmill.  
2. Plug wires again. 
 
3. Plug the wire again on controller, 

connector and console. 

4. Replace with new wires.  
5. Replace with new motor belt. 
6. Replace with new controller.  
7. Replace with new motor.   
8. Replace with new console.  

When press “START” 
button to start treadmill, 
running belt is running but 

1. Misalignment between speed sensor and magnet. 
2. The 12C508A was broken on the controller. 

3. Magnet missing. 

1. Adjust the distance to 5mm between 

speed sensor and magnet.   

2. Replace “12C508A” or controller. 

All manuals and user guides at all-guides.com

Summary of Contents for XT90-NT23

Page 1: ...X XT T9 90 0 N NT T2 23 3 T Tr re ea ad dm mi il ll l S Se er rv vi ic ce e M Ma an nu ua al l All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 2: ...WARNING ALWAYS UNPLUG THE TREADMILL FROM THE ELECTRICAL OUTLET BEFORE SERVICING THE UNIT All manuals and user guides at all guides com...

Page 3: ...nsole 5 2 Main controller 5 3 Treadmill motor 5 4 Incline motor 5 Operation 7 A WINDOW DISPLAY MODE 7 1 DISPLAY Mode 7 2 READY Mode 7 3 RUN Mode 7 B FUNCTION 8 1 SPEED 8 2 Incline 8 3 TIME 8 4 LAPS 9...

Page 4: ...nt te en nt ts s 2 2 Diagrams and Schematics 23 APPENDIX A 26 1 TREADBELT ADJUSTMENT 26 APPENDIX B 28 1 TREADMILL LUBRICATION 28 APPENDIX C 29 1 RESET SWITCH RESETTING 29 APPENDIX D 30 1 FUSE REPLACE...

Page 5: ...anical Layout 23 Figure 4 Main Controller information voltages 24 Figure 5 Function JK1 connector on Main Controller 24 Figure 6 Wiring Diagram 25 Figure 7 Schematic Diagram Figure 8 If Treadbelt slip...

Page 6: ...e that controls all functions of the treadmill c Main controller The circuit board consist of the DC power supply for console incline driver and DC motor driver link the console to output appropriate...

Page 7: ...the Red wire M the treadmill motor will turn clockwise d If there is DC voltage on the Black wire M the treadmill motor will turn counter clockwise e The higher the voltage the faster the motor turns...

Page 8: ...S Se er rv vi ic ce e M Ma an nu ua al l D De es sc cr ri ip pt ti io on n D De es sc cr ri ip pt ti io on n 6 6 Figure 1 Operational Flowchart All manuals and user guides at all guides com...

Page 9: ...l enters the DISPLAY Mode 2 READY MODE a When the treadmill is ON and SAFETY KEY is inserted in console the message window will show PRESS START FOR QUICK START OR ENTER FOR SETUP b Press START button...

Page 10: ...is 0 to 999 c WORK range is 0 to 15 d INCLINE preset value is 0 to 15 e Press UP or DOWN to adjust incline each increment and decrement is 0 5 3 TIME a TIME is either COUNT UP or COUNT DOWN System pr...

Page 11: ...c WORK range is 0 00 to 99 99 6 CALORIES a Displays the cumulative calories burned at any given time during your workout b DISPLAY range is 0 0 to 999 0 c WORK range is 0 0 to 999 7 PULSE a Displays...

Page 12: ...g time and speed Heart Rate Control 1 2 can set time age and the value of heart rate User Program 1 2 can set time speed and incline e PROGRAM button Press PROGRAM button to select manual preset progr...

Page 13: ...ncrease your speed and each increase is 0 1mph If button is pressed continuously then speed increases to MAX SPEED quickly h SLOW button Press the button to decrease your speed and each decrease is 0...

Page 14: ...ove setting and enter next section of setting mode g Set Min speed Press FAST or SLOW button to adjust SPEED window to 0 5 h Press ENTER button to memorize above setting and enter next section of sett...

Page 15: ...UG THE TREADMILL FROM THE ELECTRICAL OUTLET BEFORE SERVICING THE UNIT 1 GENERAL a Do a visual check of all wiring and connections looking for chafed wires or lose connections b Make sure any wiring is...

Page 16: ...unit 3 Check the voltage of outlet 4 Replace power cord 5 Replace power cord 6 Check if wire is disconnected connect it again 7 Press the small red button to return to original status 8 Replace break...

Page 17: ...tic component beside safe key When press START treadmill doesn t start 1 Motor M or M wire isn t connected into right position 2 Controller is broken No power to motor 3 Motor is broken 4 Treadmill co...

Page 18: ...onds 1 Controller experienced unusual shut down the S_D light will be always bright Controller debugging form 2 Motor wires red black aren t plugged into controller 3 Computer cables not connected pro...

Page 19: ...rple wires got damage replace the wires 8 Replace console SPEED windows display is not 1 0 to 18 0 km Monitor is not calibrated Calibrate the console INCLINE windows display is not 0 to 15 1 Console i...

Page 20: ...t belt in use around treadmill 2 Other magnetic field disturbance 3 Receiver is broken 1 Check for other chest belt use around treadmill 2 Change the position or direction of treadmill 3 Replace with...

Page 21: ...6 Replace with new cable UP DOWN button of INCLINE ADJUSTMENT SWITCH can t be used Incline button just can press UP can t press DOWN Incline button just can press DOWN can t press UP 1 The connector o...

Page 22: ...le 4 Hand pulse board is broken 1 Two hands hold the hand pulse 2 Connect the cable again 3 Replace with new cable 4 Replace console or Hand pulse board Wireless lost its function No pulse displayed o...

Page 23: ...A Black particles collecting under treadmill Drive belt is breaking in Vacuum under treadmill periodically Noise under motor cover 1 Worn brushes or bearings on motor 2 Front roller bearings are defe...

Page 24: ...xceed 15A the LCD will turn on If LIMIT light is bright for 3 to 5 seconds the S_D light will turn on Loading is too high on belt Operation is not correct motor lock Check mechanical drive system is n...

Page 25: ...g gr ra am ms s a an nd d S Sc ch he em ma at ti ic cs s D Di ia ag gr ra am ms s a an nd d S Sc ch he em ma at ti ic cs s 2 23 3 DIAGRAMS AND SCHEMATICS Figure 2 Console Layout Figure 3 Mechanical La...

Page 26: ...ma at ti ic cs s 2 24 4 Figure 4 Main Controller information voltages Figure 5 Function JK1 connector on Main Controller M TO MOTOR RED WIRE M TO MOTOR BLACK WIRE SPEED SENSOR INCLINE UP RED WIRE INCL...

Page 27: ...a an nu ua al l D Di ia ag gr ra am ms s a an nd d S Sc ch he em ma at ti ic cs s D Di ia ag gr ra am ms s a an nd d S Sc ch he em ma at ti ic cs s 2 25 5 Figure 6 Wiring Diagram All manuals and user...

Page 28: ...too loose Tighten both rear roller adjusting bolts 1 4 turn clockwise using allen wrench 1 4 TURN Figure 9 If tread belt shifts too far to the Right a Set the treadmill speed to 3 5 mph 5 6 km b Tigh...

Page 29: ...ft adjusting bolt a 1 4 turn clockwise using allen wrench c Wait 15 seconds if no change turn the right adjusting bolt a 1 4 turn counter clockwise using allen wrench d Repeat steps b and c until belt...

Page 30: ...he surface is dry to the touch apply one packet of lubricant HOW TO APPLY LUBRICANT 1 Lift one side of treadbelt 2 Pour one half of the lubricant bottle under the center of the treadbelt on the top su...

Page 31: ...ting Reset switch 1 RESET SWITCH RESETTING a If the red button of reset switch is tripped it will protrude out from the face of the switch b Press in the red button of the switch c If the red button o...

Page 32: ...PLACEMENT If your treadmill loses power or will not start check the fuse located on the motor controller DANGER Turn the power switch off and unplug the treadmill to reduce the risk of an electric sho...

Page 33: ...sor and magnet may be misaligned Follow these steps to check and realign Remove the motor cover Check the spacing and alignment between the magnet on the right side of the front roller and the speed s...

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