Sears 30750 Service Manual
  1. Manuals
  2. Brands
  3. Sears Manuals
  4. Treadmill
  5. 30750
  6. Service manual
Sears 30750 Service Manual

Sears 30750 Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

S
Manual
Sears Canada
ervice
Treadmills
Models
30750, 30727

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 30750 and is the answer not in the manual?

Questions and answers

Related Manuals for Sears 30750

Summary of Contents for Sears 30750

  • Page 1 Manual Sears Canada ervice Treadmills Models 30750, 30727...
  • Page 2 Resetting the Incline Motor >> 30750 Voltage Checks >> 30727 Engineering Mode Section Three Maintenance >> Preventative Troubleshooting Exploded Drawings >> Lubrication >> 30750 >> Tensioning & Alignment Proper Heart Rate Usage >> 30727 | 008 Sears CA Treadmill Service Manual [rev 1.0]...

  • Page 3: Safety Instructions

    • Keep all loose items away from the treadmill running surface. A treadmill running belt will not stop immediately if an object becomes caught in the belt or rollers. 008 Sears CA Treadmill Service Manual [rev 1.0] |...
  • Page 4 • Unplug treadmill before moving it. • Do not remove the treadmill motor cover or roller covers. • Treadmill should be plugged into a dedicated 20 amp circuit for optimal performance. | 008 Sears CA Treadmill Service Manual [rev 1.0]...
  • Page 5 Motor commutator stone • Needle nose pliers • Damp cloth • Rubber mallet • Hammer • Drop cloth • Ruler • Snap ring pliers • Wire cutters Available through Horizon Fitness at Cost. 008 Sears CA Treadmill Service Manual [rev 1.0] |...
  • Page 6 Running Belt | Running Deck RUNNING BELT/RUNNING DECK Power Cord POWER CORD Side Rail SIDE RAIL Transport Wheel TRANSPORT WHEEL Roller End Cap ROLLER END CAP Rear Roller REAR ROLLER Adjustment Bolts ADJUSTMENT BOLTS | 008 Sears CA Treadmill Service Manual [rev 1.0]...
  • Page 7 RUNNING BELT / RUNNING DECK Side Rail SIDE RAIL Orthoflex Gel Cushion ORTHOFLEX GEL CUSHION Roller End Cap ROLLER END CAP Rear Roller REAR ROLLER ADJUSTMENT BOLTS Adjustment Bolts Transport Wheel TRANSPORT WHEEL 008 Sears CA Treadmill Service Manual [rev 1.0] |...
  • Page 8 • Vacuum and wipe down the belt with a damp cloth. Vacuum any black/white particles that may accumulate around the unit. These particles may accumulate from normal treadmill use. Note: Maintenance is NOT covered under manufacturer’s warranty. | 008 Sears CA Treadmill Service Manual [rev 1.0]...
  • Page 9 • Lubricate the air shocks with Teflon based spray. • Once lubrication is complete, reset the console by pressing and holding ‘STOP’ and Speed buttons for 5 seconds. LUBRICATION Running Belt Running Deck 008 Sears CA Treadmill Service Manual [rev 1.0] |...
  • Page 10 • If the running belt tracks to the right, turn the right roller bolt clockwise 1/4 of a turn, keeping the belt tension in mind. Over-tightening the running belt may cause damage to the running belt and roller bearings. | 008 Sears CA Treadmill Service Manual [rev 1.0]...

  • Page 11: Proper Heart Rate Usage

    • When your hands are dry or cold. Try to moisten your palms by rubbing them together to warm them. • Anyone with heavy arrhythmia. • Anyone with arteriosclerosis or peripheral circulation disorder. • Anyone whose skin on the measuring palm is especially thick. 008 Sears CA Treadmill Service Manual [rev 1.0] |...
  • Page 12 >> Motor | AC Wire >> Console Cable >> Speaker Amp Board >> 9 Wire Console Cable (30750) >> 12 Wire Console Cable (30727) >> Incline Wire >> Engineering Mode (30727) | 008 Sears CA Treadmill Service Manual [rev 1.0]...
  • Page 13 • Verify that there aren’t any pinches or cuts in any of the wires, especially the console cable connecting from the motor control board to the upper board. Replace any wires that are pinched or cut. 008 Sears CA Treadmill Service Manual [rev 1.0] |...
  • Page 14 • Auto-calibrate the machine from engineering mode if the belt speed is erratic or the belt speed does not correspond to what is displayed on the console. Step  | Voltage Checkpoints • Verify that proper voltage is being transferred through the console cable. | 008 Sears CA Treadmill Service Manual [rev 1.0]...
  • Page 15 (Upper Control Board) safekey 076820 076819 078691 Speaker(L) 070674 Speaker(R) 078690 002671-A AUDIO OUT AUDIO IN 073303 073705 077117 067517-00 078687 078687 Incline + Incline - Speed + Speed - START STOP 008 Sears CA Treadmill Service Manual [rev 1.0] |...
  • Page 16 30750 Section Two | Wiring Diagrams and Schematics >> Wiring Diagram (30750) Console Cable Console Cable Finger Pulse Receiver Finger Pulse Receiver Switch Key Switch Key Safe Key Safe Key | 008 Sears CA Treadmill Service Manual [rev 1.0]...
  • Page 17 Wire Length will determine connection point. D – On/Off switch to motor control board. E – On/Off switch to motor control board. F – On/Off switch to breaker. Note: Wires A & C are interchangeable. 008 Sears CA Treadmill Service Manual [rev 1.0] |...
  • Page 18  | Spin shaft manually until it is almost flush with the incline motor casing and only about 1 thread is visible (F). 7 | Reinsert bolt and power up the machine. 8 | Test the incline function and calibrate the unit. | 008 Sears CA Treadmill Service Manual [rev 1.0]...
  • Page 19 Voltage With Sensor Voltage With Sensor Not Obstructed Obstructed Yellow Digital Speed Sensor 5.0 +/- 0.4 vdc 0.3 vdc Red Digital Speed Sensor 5.0 +/- 0.4 vdc 5.0 +/- 0.4 vdc 008 Sears CA Treadmill Service Manual [rev 1.0] |...
  • Page 20 Unplug the motor from the lower board. Using an ohm meter (if non-auto ranging set for the 200 ohm range), attach ohm meter leads directly into the motor leads. Desired Results: The motor should read approximately 1.0-1.5 ohms. | 008 Sears CA Treadmill Service Manual [rev 1.0]...
  • Page 21 Section Two | Voltage Checks >> Motor Voltage Check | Spin motor flywheel to produce voltage 1.20 V DC >> AC Wire Voltage Check 008 Sears CA Treadmill Service Manual [rev 1.0] |...
  • Page 22 Note | 2: It may be necessary to remove the glue from the console cable to access the pins. >> Speaker Amp Board Voltage | 30727 Only Voltage In Voltage Out 120v | 008 Sears CA Treadmill Service Manual [rev 1.0]...
  • Page 23 Section Two | Voltage Checks >> 9 Wire Console Cable Voltage Chart (DC Volts) Model 30750 Polarity tab will face User P1: Incline Up P1: Incline Up P2: Incline Down P2: Incline Down P3: GND P3: GND P4: Power Voltage (to UCB)
  • Page 24 0% or at console functions until value at 0, no up incline. Similar height” phenomenon to cut Pink wire if incline stopped not at 0%. Note: Wire colors are subject to change. | 008 Sears CA Treadmill Service Manual [rev 1.0]...
  • Page 25 Neither up nor down func- Neither up nor down function. Value w/black does not change. tion. ground Parameter: Use functioning incline motor and remove one wire at a time to observe malfunction 008 Sears CA Treadmill Service Manual [rev 1.0] |...

  • Page 26: Engineering Mode

    Section Two | Engineering Mode Engineering Mode >> Model 30727 Only | Model 30750 has no engineering mode. Note: At Any time, Press and hold the STOP button to exit the engineering menu. 1 | Turn the treadmill power to ON.
  • Page 27 Table of Contents >> Section Three Troubleshooting Exploded Drawings 008 Sears CA Treadmill Service Manual [rev 1.0] |...

  • Page 28: Table Of Contents

    Membrane | Keypad | Overlay Safety Key | Reed Switch Heart Rate Erratic Speed | 30727 Erratic Speed | 30750 Elevation | 30727 Elevation | 30750 No Motor Movement Circuit Breaker Noise | 008 Sears CA Treadmill Service Manual [rev 1.0]...

  • Page 29: Failed Auto Calibration

    - Put machine into Eng1 (Reference p26) and check for slight fluctuation of speed in speed window of display. (Speed should not fluctuate more than a few hundredths.) Failed motor control Replace MCB. board (MCB). 008 Sears CA Treadmill Service Manual [rev 1.0] |...

  • Page 30: Console | Upper Board

    Reference p22. Failed motor control -Check voltage and Replace motor control board (MCB). continuity of console board. cable. Reference p22. -Verify the power LED is lit on the MCB. | 008 Sears CA Treadmill Service Manual [rev 1.0]...
  • Page 31 Inadequate lubrication -Place hand underneath Apply silicone. on deck and running running belt and feel for belt. adequate silicone application. Membrane keys. Reference Membrane Troubleshooting p32. 008 Sears CA Treadmill Service Manual [rev 1.0] |...

  • Page 32: Membrane | Keypad | Overlay

    -Remove overlay and use. press keypad for proper function. -Put in Eng0 to chech button function. Reference p26. | 008 Sears CA Treadmill Service Manual [rev 1.0]...

  • Page 33: Safety Key | Reed Switch

    Safety key will only Improperly aligned Remove glue from Test for proper function register if moved reedswitch. reedswitch and and glue into place. outside of the proper reposition. position. 008 Sears CA Treadmill Service Manual [rev 1.0] |...

  • Page 34: Heart Rate

    Reference Proper Heart Rate Usage p23. Electromagnetic Check immediate area Remove interference interference. for causes of from vicinity of the unit. interference: florescent lighting, electric dog fences, large electric motors, etc.. | 008 Sears CA Treadmill Service Manual [rev 1.0]...

  • Page 35: Erratic Speed | 30727

    -Drive belt is too loose or customer is using the too tight. machine. Reference Belt Tensioning p10. -The drive belt should have approximately 3/8 of inch deflection. 008 Sears CA Treadmill Service Manual [rev 1.0] |...
  • Page 36 -Start in P1 and see if change on display and reoccurs. beeps. Stuck button. Reference membrane keypad and overlay troubleshooting p32. Failed upper board. Replace UCB | 008 Sears CA Treadmill Service Manual [rev 1.0]...

  • Page 37: Erratic Speed | 30750

    Section Three | Troubleshooting Treadmill Troubleshooting >> Erratic Speed | Running Belt | Model 30750 Only Symptom Possible Cause Test Procedure Repair Belt overshoots desired Failed speed sensor or -Check to see if the Send speed sensor and speed on console and console cable.

  • Page 38: Elevation | 30727

    The incline will go up, but Failed lower board. -The incline will act normally Replace lower board. not down. (very rare) when going up, bet when the down incline is pressed there is no movement. | 008 Sears CA Treadmill Service Manual [rev 1.0]...

  • Page 39: Elevation | 30750

    The incline will only go up. Buttons are stuck. Test the Incline Buttons It is stuck either at the top Verify they are or the middle. functioning. CC is defective. Verify The CC conections. -Replace CC 008 Sears CA Treadmill Service Manual [rev 1.0] |...

  • Page 40: No Motor Movement

    Failed drive motor. -Measure voltage output Replace drive motor. from motor. Reference motor, AC Wire Voltage Check p21. Failed optic sensor. -Verify voltage of digital Replace optic sensor. sensor. Reference p19. | 008 Sears CA Treadmill Service Manual [rev 1.0]...

  • Page 41: Circuit Breaker

    Failed drive motor. -Perform AMP draw test Replace drive motor. on motor. Reference AMP Draw, p14. Failed motor control Replace MCB. board (MCB). Machine breaker will Failed circuit breaker. Replace circuit breaker. trip. 008 Sears CA Treadmill Service Manual [rev 1.0] |...

  • Page 42: Noise

    Banging or clunking -Unit not level. -Check levelers and the -Adjust levelers. sound. -Bent frame. floor. -Move unit to a level -Inspect frame for surface. damage. -Place on rubber mat. | 008 Sears CA Treadmill Service Manual [rev 1.0]...

  • Page 43: Exploded Drawing

    Section Three | Exploded Drawings Exploded Drawing >> 30727 | Note Drawings are updated periodicaly: Contact Customer Tech Support for updated Drawing. 008 Sears CA Treadmill Service Manual [rev 1.0] |...
  • Page 44 Section Three | Exploded Drawings Exploded Drawing >> 30750 | Note Drawings are updated periodicaly: Contact Customer Tech Support for updated Drawing. | 008 Sears CA Treadmill Service Manual [rev 1.0]...
  • Page 45 Horizon Fitness | 10 Landmark Drive, Cottage Grove WI 7 Phone 800--1 | Fax 08.8.180 | Version 1.0 JHP December 2007...

This manual is also suitable for:

30727

Table of Contents