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True Fitness Service
Manual
Treadmills
Models 350-750
True fitness technology, Inc. makes no representations or warranties regarding the
contents of this manual. We reserve the right to revise this document at any time or
to make changes to the product described within it without notice or obligation to
notify any person of such revisions or changes.
© 2004, True Fitness, Inc. All rights reserved. Printed in the United States of
America.
865 Hoff Road. O’
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Treadmill Preventative Maintenance Checklist Run calibration or run a manual program and watch and listen for anything out of the ordinary. Perform a push off test (page T-7) to check for proper lubrication. If excessive friction is found and lubrication doesn’t correct the problem perform the amp draw test (page T1-2) Inspect the belt surfaces, topside should still have texture for grip, bottom should be porous fabric- not glazed, smooth or hard. Inspect deck surface, should
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True Fitness Treadmill Service Manual START Symptom guide Calibration Procedures Diagnostic Procedures Test Procedures Wiring Diagrams Part Manuals Page 1
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SYMPTOM GUIDE Error Code Definitions . . . . . . . . . . . . . . . . . . . . . . . . Page 3, 4 No Belt Movement . . . . . . . . . . . . . . . . . . . . . . . . Page 5, 6 Tread Belt Stops During Workout . . . . . . . . . . . . . . . . Page 7 Heart Rate Not Working / Erratic Readings . . . . . . . . Page 8 Elevation Not Functional . . . . . . . . . . . . . . . . . . . . .. . Page 9 Speed Fluctuation: E2 Cal . . . . . . . . . . . . . . . . . . . . . . Page 10
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Symptom Probable Cause Corrective Action Recommended Tools Liquid silicone single ERROR MESS AGES: use pack Liquid Silicone S1 L LUBE Indicates that the Applicator. • Lube deck with True Fitness liquid accumulated distance Vacuum silicone lubricant. Inspect wax bar is such that the deck Shop towel assembly on commercial models, if needs to be lubed worn to less that ¼ inch in thickness- replace wax bar. S2 C CLEAN In
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Symptom Probable Cause Corrective Action Recommended Tools ERROR MESSAGES : Multi-meter (cont’d) Phillips head screwdriver Belt speed ramping E2 O Perform Amp Draw Test – Page 20. OVERSPEED too fast. Perform Belt / Deck Wear Test – Page 24. E2 C Micro-controller Calibrate Treadmill – Page 16. CALIBRATE cannot adjust belt See appropriate Symptom Guide – pages 10-11. spee
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Symptom Probable Cause Corrective Action Recommended Tools Treadmill in need of • Run calibration. (page 16) Multi-meter NO BELT calibration. MOVEMENT PWM / Motor test -------- cables Missing command to • Is PWM light blinking/ illuminated PWM. when fast button is pushed? NO- Check continuity on wire harness, if Note: harness has continuity breaks replace the All trouble harness. If harness has continuity- repla
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Symptom Probable Cause Corrective Action Recommended Tools NO BELT Motor turns but belt • Check belt tension. MOVEMENT does not. • Set belt tension to 1/8-inch deflection or (cont’d) correct tension can be verified by Note: twisting the belt almost to a 90-degree All trouble position. shooting should be performed in calibration mode. Page 16 ------
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Symptom Probable Cause Corrective Action Recommended Tools • Check safety key to ensure that it is Loose safety key TREADBELT Liquid silicone seating properly. connection STOPS single use pack • Check connection sensitivity. Liquid silicone DURING -------- Applicator WORKOUT Multi-meter Error Code Belt movement issue • If treadmill will not reset with cycling Socket set displays: the power go to NO BELT Go to page 3 & MOVEMENT (pages 5 &
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Symptom Probable Cause Corrective Action Recommended Tools Multi-meter Incorrect power • Verify that the treadmill is connected to source a dedicated line, 15-amp circuit, and not HEART RATE Double sided tape on an extension cord. NOT • Move to proper outlet. WORKING / Heart rate simulator • Test 110 VAC outlet for proper ground ERRATIC READINGS -------- Improper treadmill • Proper grounding is vitally important. grounding •
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Symptom Probable Cause Corrective Action Recommended Tools Multi-meter Improper grounding • Test 110VAC outlet for proper ELEVATION / Calibration grounding NOT Alligator clip (May cause unit to • If unit has not been calibrated – FUNCTIONAL drift up & down calibrate ( E1 ERROR) without command) • Ensure that incline cables are secure on PWM -------- Unit is stuck at full • Verify the lower limit switch is properly Note
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Symptom Probable Cause Corrective Action Recommended Tools SPEED FLUCTUATION • Perform Push Off Test (page 24) Multi-meter Speed Fluctuation • Perform Amp Draw Test (page 20) E2: CAL (Due to high friction) Socket Set Silicone Lubrication -------- Packet Silicone Lubrication Applicator • Check Line voltage for fluctuations. Speed Fluctuation • Have customer take corrective action. (Due to Voltage flu
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Symptom Probable Cause Corrective Action Recommended Tools Multi-meter SPEED FLUCT UATION • Go to page 5, 6. No Belt Movement Socket Set S4: Sensor -------- Silicone Lubrication E5: Speed Sensor E2: Overspeed Packet E3: EPROM Error Silicone Lubrication • Enter Calibration mode (page 16) No/Intermittent Applicator Tach Feedback • Verify speed feedback in speed display through out the speed range. [Speed display should never s
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Symptom Probable Cause Corrective Action Recommended Tools No power at the 110 • Check home circuit breaker. Reset as NO DISPLAY VAC outlet. necessary. Allen Key set. • Test for 110 VAC at outlet. • Identify if outlet is a GFI. Phillips head screwdriver. Note: Some brands of GFI Multi-meter. outlets are too sensitive for treadmill use. Call the help line if encountering GFI issues. -------- No power to
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Symptom Probable Cause Corrective Action Recommended Tools Possible short in • Power off the treadmill and inspect all Allen Key set CIRCUIT treadmill wiring. wiring for shorts or burned areas. BREAKER • Secure all connectors. Needle nose pliers TRIPS Socket set -------- Multi-meter Motor issues. • Disconnect motor leads from the PWM. Power on treadmill, press start. If the breaker does not trip check the motor
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Symptom Probable Cause Corrective Action Control Panel Issues • Enter calibration mode Soft Select • Is there a count value displayed in the distance window? If No Malfunctions replace control panel. If yes- continue to next step. -------- Mechanical Issues • Press and hold the softer button, release. Press and hold the firmer button to detect carriage movement in both directions. If the carriage cannot go full range from –220 and consisten
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Symptom Probable Cause Corrective Action Soft Select AC Power Issues • Is AC power LED D3 lit? Malfunctions • No- check F1 fuse. If F1 is good check for AC voltage between TP1 (continued) and TP5. If fuse and voltage are good- replace the board. -------- Wire Harness • Yes- While in calibration mode Press the Softer button- LED D1 should light, press the Firmer button- LED D2 should light. If the lights resp
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Calibration Procedures SS 100 PWM (5-xxxxx to 6-79999 serial numbers) Entering Engineering Mode: With safety key in, power up unit while holding Grade Up and Grade Down keys. Incline will reset to zero. Mode 1: Max Speed Press Select/Enter- 01 (C1 for 450) appears in Distance. Adjust speed using Fast and Slow buttons until 10 or 12 mph Verify speed by counting belt revolutions: 10mph= 102 Belt revs/per min. 12mph= 121 Belt revs/per min. Press Start/Reset t
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DIAGNOSTICS (Available only in SS90 Machines) To enter diagnostic mode, press and hold the FAST and SLOW buttons while pushing in the safety key. The control panel will show “Diagnostics”. Press the UP button: Total Hours (in whole hours) Press the UP button: Distance (in miles, two digits past decimal point) Press the UP button: Average Speed (in mph) Error List (This is an error log, but just a list of errors possible on the unit.)
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