Dyaco ST300-YT35, Service Manual

Page 1: ...S ST T3 30 00 0 Y YT T4 42 2 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 ...

Page 2: ...WARNING ALWAYS UNPLUG THE TREADMILL FROM THE ELECTRICAL OUTLET BEFORE SERVICING THE UNIT ...

Page 3: ... 1 ST300 YT42 Treadmill components 4 B GENERAL INFORMATION 5 1 Console 5 2 Main controller 5 3 Treadmill motor 5 Operation 7 A WINDOW DISPLAY MODE 7 1 OFF Mode 7 2 READY Mode 7 3 SLEEP Mode 7 4 RUN Mode 7 B FUNCTION 8 1 SPEED 8 2 INCLINE 8 3 TIME 8 4 DISTANCE 9 5 CALORIES 9 6 PULSE 9 7 LAPS 9 8 SCAN 9 C FUNCTION BUTTON IN MAIN MODE 10 1 READY MODE 10 2 RUN MODE 11 D CALIBRATION PROCEDURE 12 1 Cali...

Page 4: ...of f C Co on nt te en nt ts s 2 2 2 Troubleshooting Matrix 14 3 controller debugging form 21 Diagrams and Schematics 22 APPENDIX A 27 1 TREADBELT ADJUSTMENT 27 APPENDIX B 29 1 TREADMILL LUBRICATION 29 APPENDIX C 30 1 RESET SWITCH RESETTING 30 APPENDIX E 31 1 SPEED SENSOR ADJUSTMENT 31 2 SERVICE QUESTIONS 31 ...

Page 5: ...Layout 22 Figure 3 Mechanical Layout 22 Figure 4 Main Controller information voltages 23 Figure 5 Function JK1 connector on Main Controller 23 Figure 6 Wiring Diagram 25 Figure 7 Schematic Diagram 26 Figure 8 If Treadbelt slips 27 Figure 9 If tread belt shifts too far to the Right 27 Figure 10 If tread belt shifts too far to the Left 28 Figure 11 Resetting Reset switch 30 Figure 12 Fuse replacemen...

Page 6: ... not be controlled b Console Interface 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 voltages for motor that control the treadmill functions d Treadmill motor This is a variable speed for DC motor To control the 0 90 voltages on the main controller...

Page 7: ...LER a Include power supply motor driver control circuit and incline control circuit 3 TREADMILL MOTOR a It s a variable speed that be controlled on DC motor b Have three wires red black and green c Has three wires red black and green d If there is DC voltage on the Red wire M the treadmill motor will turn clockwise e If there is DC voltage on the Black wire M the treadmill motor will turn counter ...

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 ...

Page 9: ...lank 2 READY MODE a When the treadmill is ON and SAFETY KEY is inserted in console the message window will show program name b In READY Mode if user doesn t press any button for 30 minutes it will automatically turn off blank out enter SLEEP MODE 3 SLEEP MODE a In SLEEP Mode if any buttons are pressed then the treadmill enters READY Mode 4 RUN MODE a In RUN Mode pressing the STOP button and pull o...

Page 10: ... 0 to 15 b DISPLAY range 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 1 3 TIME a TIME is either COUNT UP or COUNT DOWN System preset is COUNT UP if user sets the time then timer is COUNT DOWN b DISPLAY range is 0 00 to 99 99 c WORK range is 0 00 to 99 59 d COUNT DOWN setup range is 10 00 to 99 00 e When T...

Page 11: ...c WORK range is 0 0 to 99 99 5 CALORIES a In RUN Mode CALORIES preset is COUNT UP b DISPLAY range is 0 to 999 c WORK range is 0 to 999 6 PULSE a In RUN Mode DISPLAY range is 0 to 999 b WORK range is 50 to 220 c If the treadmill doesn t have a signal for 8 seconds then value will become 7 LAPS a Display your current lap 0 25 miles 8 SCAN a Display will automatically shift every 5 seconds ...

Page 12: ... a third time the console will return to the idle mode start up screen If the Stop button is held down for more than 3 seconds the console will reset d ENTER button Press ENTER button to change each function MANUAL can to set using time Preset PROGRAM can to set using time and max speed Heart Rate Control 1 2 can to set time and target heart rate User Program 1 2 can set time speed and incline pro...

Page 13: ...cise data f In SCAN mode display automatically shifts every 5 seconds g FAST button Press the button to increase your speed and each increase is 0 1mph kph 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 1mph kph If button is pressed continuously then speed decreases to MIN SPEED quickly i UP b...

Page 14: ...TANCE window will display 3 01 default The message window will display ADJUST WHEEL SIZE THEN PRESS ENTER use FAST or SLOW key to adjust value f Set Min speed Press ENTER button to set the minimum speed that will display 0 5MPH in the SPEED window Message window will to display ADJUST MIN SPEED THEN PRESS ENTER g Set Max speed Press ENTER button to set the high speed that will display 12 0 MPH in ...

Page 15: ...TING WARNING ALWAYS UNPLUG 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 safely positioned and or secured away from moving parts c If you find a fuse blown on a circuit board replace the circuit board ...

Page 16: ...ug the power cord into 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 breaker 9 Replace A C switch After turning on power treadmill has a popping sound 1 Incorrect input power varistor is blown broken on controller 1 Check the voltage of power is 120V R...

Page 17: ...onnected into right position 2 Controller is broken No power to motor 3 Motor is broken 4 Treadmill controller shut down and LED would be ON 5 Console is broken 1 Please check and plug again 2 Replace controller or MOSFET IRFP 260 and add the Silicone Heat Sink Paste suitably 3 Replace motor or check the wire and connector if it was broken 4 Turn off the AC switch and turn on power again 5 Use ano...

Page 18: ...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...

Page 19: ...h Monitor is not calibrated Calibrate the console INCLINE windows display is not 0 to 15 1 Console is not calibrated 1 Calibrate the console The speed of the belt doesn t match console display 1 Console is not calibrated 1 Calibrate the console The incline position doesn t match console 1 Console is not calibrated 1 Calibrate the console INCLINE window displays E2 1 Position sensor value of inclin...

Page 20: ...tton just can press FAST can t press SLOW Speed button just can press SLOW can t press FAST 1 The connector of SPEED CABLE UPPER and CONSOLE not connected properly 2 The connector of SPEED CABLE UPPER and SPEED ADJUSTMENT SWITCH W CABLE not connected properly 3 The connector of SPEED CABLE UPPER or SPEED ADJUSTMENT SWITCH W CABLE is damaged 4 Button of SPEED ADJUSTMENT SWITCH is broken 5 The conne...

Page 21: ...NE ADJUSTMENT SWITCH is broken 5 The connector of INCLINE CABLE UPPER or INCLINE ADJUSTMENT SWITCH CABLE got damage 6 The connector of INCLINE CABLE UPPER or INCLINE ADJUSTMENT SWITCH CABLE damaged 2 Connect the wires again 3 Replace the cable 4 Replace buttons 5 Replace the cable 6 Replace the cable Hand pulse lost its function No pulse displayed on monitor 1 Hands not on the hand pulse sensors o...

Page 22: ... Tread belt does not run in center Tread belt tension not even across tread belt See treadbelt adjustment see Appendix A Tread belt hesitates while being stepped on Insufficient lubricant on tread belt Tread belt tension insufficient See treadbelt lubrication see Appendix B Tension Belt see Appendix A Black particles collecting under treadmill Drive belt is breaking in Vacuum under treadmill perio...

Page 23: ...Fuse Replace controller LIMIT Limit the current of DC motor When current of motor exceed 30A the LED 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 not locked or jammed Replace controller Replace motor S_D Controller shut down If controller has unusual shut down the...

Page 24: ...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 22 2 DIAGRAMS AND SCHEMATICS Figure 2 Console Layout Front Cover Controller Choke and Filter Figure 3 Mechanical Layout ...

Page 25: ...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 AC1 AC2 110 VAC IN M TO MOTOR RED WIRE M TO MOTOR BLACK WIRE AC OUT_2 AC OUT_1 MOSFET 12C508 Figure 4 Main Controller information voltages Figure 5 Function JK1 connector on Main Controller ...

Page 26: ...S Se er rv vi ic ce e M Ma 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 24 4 ...

Page 27: ... Se er rv vi ic ce e M Ma 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 ...

Page 28: ...Se er rv vi ic ce e M Ma 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 26 6 Figure 7 Schematic Diagram ...

Page 29: ...t slips The treadbelt is 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 Tighten the right adjusting bolt a 1 4 turn clockwise using allen wrench c Wait 15 seconds if no change turn the left adjusting bolt a 1 4 turn counter clockwise using allen wrench...

Page 30: ... 5 6 km b Tighten the left 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 e Repeat steps b and c until belt is centered IMPORTANT DO NOT OVERTIGHTEN TREADBELT If treadbelt is overtightened edges of treadbelt will begin to curl CAUTION DO NOT ALLOW ANYONE TO WALK ON TREADBELT WHILE Y...

Page 31: ...required If the 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 surface of the treadboard 3 Walk on the treadmill at a slow speed for 3 to 5 minutes to evenly distribute lubricant NOTE DO NOT over lubricate treadboard Any excess lubricant that comes out...

Page 32: ... 30 0 APPENDIX C Figure 11 Resetting 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 of reset switch is not tripped that means normal Tripped Normal 115 115 ...

Page 33: ...isplay speed or distance the speed sensor 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 sensor on the frame The spacing must be 1 8 Loosened screw and slide speed sensor in or out of clamp Retighten screw Replace the motor cover 2 SERVICE QUESTIONS ...