Healthstream T790 Service Manual
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Healthstream T790 Service Manual

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T790 Treadmill
1dmill
Customer Support Services
SERVICE MANUAL

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February 22, 2025

Having error: check safety key

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Summary of Contents for Healthstream T790

  • Page 1 T790 Treadmill 1dmill Customer Support Services SERVICE MANUAL...
  • Page 2 INTRODUCTION HOW TO USE SERVICE MANUAL AND CONTACT CUSTOMER SUPPORT SERVICES This service manual is applicable to Treadmill T790. Note: Information represents typical configuration and may differ slightly from actual equipment. The Service Manual provides recommendations of safe and efficient approaches problem situations.

  • Page 3: Table Of Contents

    T790 Treadmill TABLE OF CONTENTS SECTION I TROUBLESHOOTING GUIDE PAGE ELECTRONIC PROBLEMS……..……….…………..………………………………………………………… 2 ELECTRICAL PROBLEMS……………..………………………………………………………..…………….. 3 MECHANICAL PROBLEMS……………………………………………………….……………….…………... 4 OTHER PROBLEMS…….……………………………………………………………………………………… 5 SECTION II OPERATING CONSOLE OPERATING ……………………………………………………………...……………………...……………… 2 OPERATING T790 CONSOLE……………..……………………………..……. …………………………….. 2 SETUP MODE……………………………. …………………………. ………………. ……………………… NOTES…………………………………………………………………………………………………………… 8 SECTION III HOW TO…REPLACE...
  • Page 4 T790 Treadmill TROUBLESHOOTING GUIDE SECTION VI MISCELLANEOUS INFORMATION PREVENTIVE MAINTENANCE………………………………………………………………………………... 2 UNPACKAGING INSTRUCTIONS…………………………………………………………………………….. 3 INSTALLATION INSTRUCTIONS……………………………………………………………………………… 4 LIFE FAX……….…………..…………………………………………………………………………………….. 9 NOTES……….…………………………………………………………………………………………………… 11...

  • Page 5: Troubleshooting Guide

    T790 Treadmill SECTION I TROUBLESHOOTING GUIDE Section 1...

  • Page 6: Electronic Problems

    T790 Treadmill TROUBLESHOOTING GUIDE ELECTRONIC PROBLEMS Code Possible Cause Recommended Action Err3 Safety tether key not inserted Insert safety tether key into monitor Safety tether key error Human factor – e.g. Remove the thing that is inserted Something may be put inside III.

  • Page 7: Electrical Problems

    T790 Treadmill TROUBLESHOOTING GUIDE ELECTRICAL PROBLEMS Problem Possible Cause Recommended Action No display on the Power not on Turn the switch to the ON position console Line cord damaged Replace the line cord Line cord improperly seated in Inspect power connection at wall outlet and at machine for...

  • Page 8: Mechanical Problems

    T790 Treadmill TROUBLESHOOTING GUIDE MECHANICAL PROBLEMS Problem Possible Cause Recommended Action Running belt slips Running belt not tight enough Adjust running belt tension Drive belt not tight enough Adjust drive belt tension Running belt Insufficient lubrication Apply silicone lubricant hesitates when...

  • Page 9: Section Ii Operating Console

    T790 Treadmill SECTION II OPERATING CONSOLE Section 2...

  • Page 10: Operating T790 Console

    T790 Treadmill OPERATING T790 CONSOLE DISPLAY VALUES Display Resolution Range Increment Display window PULSE 40-240 Left top LED window ELEVATION (%) XX.X 0.0-15.0 Left bottom LED window DISTANCE (Miles) XX.X 00.1 – 99.0 Right top LED window DISTANCE (Km) XX.X 00.1 –...
  • Page 11 T790 Treadmill OPERATING T790 CONSOLE TWO WORKOUT OPTIONS: Manual mode (Quick start): Turn power on Use START button to activate treadmill in manual mode. Starts treadmill at 1.0 Km/H and 0% grade During workout manually adjust speed and or elevation Stop treadmill any time.
  • Page 12 T790 Treadmill OPERATING T790 CONSOLE 14. After the total values are displayed twice slowly, the display will go to the beginning and ready treadmill for the next workout. If during the display of totals, STOP is pressed, display will go directly to the beginning and ready treadmill for the next workout.
  • Page 13 T790 Treadmill OPERATING T790 CONSOLE irect Speed Control logic (safety considerations) : During workout, when direct speed key is pressed….to make sure that user knows that button he has pushed…no surprises or buttons pressed by mistake…. The dot matrix will display “speed” and “value” value for the new speed in big size and speed in mid size.
  • Page 14 T790 Treadmill OPERATING T790 CONSOLE DURING WORKOUT: Speed or elevation adjustments - For elevation adjustments use UP or DOWN. For speed adjustments use FAST and SLOW or direct speed control buttons. or stop the treadmill - If stop is pressed during workout, the program is suspended. Program is paused and the time counts down from three minutes in the center display window.

  • Page 15: Setup Mode

    T790 Treadmill OPERATING T790 CONSOLE Setup Mode Remark: FAST=SPEED+ SLOW=SPEED- Initial state SLOW +STOP SETUP MODE (Press STOP to Initial state) (KM/ML) KM/ML toggle START AUTO FAST SLOW Version number FAST SLOW Total time Clear lubrication message START FAST SLOW...

  • Page 16: Notes

    T790 Treadmill NOTES Section 2...
  • Page 17 T790 Treadmill SECTION III HOW TO … SERVICE AND REPAIR GUIDE Section 2...

  • Page 18: Front Roller

    T790 Treadmill How To… Replace The Running Belt and Deck Tools Required: Allen key set, Phillips screwdriver, tape measure, rubber hammer, and open end wrench set. (All fasteners are metric. Make sure that you have metric tools.) REMOVAL AND INSTALLATION...

  • Page 19: Motor Drive Belt

    T790 Treadmill How To… Replace The Running Belt and Deck - Continued Tools Required: Allen key set, Phillips screwdriver, tape measure, rubber hammer, and open end wrench set. (All fasteners are metric. Make sure that you have metric tools.) REMOVAL AND INSTALLATION –...
  • Page 20 T790 Treadmill How To… Adjust Running Belt Tracking Tools Required: Allen key set. (All fasteners are metric. Make sure that you have metric tools.) After the treadmill has been installed and leveled, the belt must be checked for confirm proper tracking. First, plug the power cord into an appropriate outlet and turn the treadmill ON.
  • Page 21 T790 Treadmill How To…How To Adjust Running Belt Tension Tools Required: Allen key set. (All fasteners are metric. Make sure that you have metric tools.) Locate the two BELT TENSIONING BOLTS on each side of the REAR ROLLER MOUNTING BRACKETS. The TENSIONING BOLTS are accessible from the holes provided in the REAR ROLLER GUARDS.
  • Page 22 T790 Treadmill How To… Replace The Motor Drive Belt Tools Required: Allen key set, Phillips screwdriver, and open end wrench set. (All fasteners are metric. Make sure that you have metric tools.) REMOVAL AND INSTALLATION At the power switch, turn OFF the unit, then...

  • Page 23: Drive Motor

    T790 Treadmill How To…Replace The Drive Motor Tools Required: Allen key set, Phillips screwdriver, and open end wrench set. (All fasteners are metric. Make sure that you have metric tools.) REMOVAL AND INSTALLATION Remove the front motor cover screws (8)
  • Page 24 T790 Treadmill How To… Replace The Front Roller Tools Required: Allen key set, Phillips screwdriver, and open end wrench set. (All fasteners are metric. Make sure that you have metric tools.) REMOVAL AND INSTALLATION At the power switch, turn OFF the unit,...
  • Page 25 T790 Treadmill How To…Replace The Rear Roller Tools Required: Allen key set, Phillips screwdriver, rubber hammer, and open end wrench set. (All fasteners are metric. Make sure that you have metric tools.) REMOVAL AND INSTALLATION At the power switch, turn OFF the unit, and then...

  • Page 26: Deck Cushion

    T790 Treadmill How To… Replace The Deck Cushion Tools Required: Allen key set, Phillips screwdriver, tape measure, rubber hammer, and open end wrench set. (All fasteners are metric. Make sure that you have metric tools.) REMOVAL AND INSTALLATION At the power switch, turn OFF the unit,...

  • Page 27: Incline Motor

    T790 Treadmill How To…Replace The Incline Motor Tools Required: Phillips screwdriver, Sharp nose pliers, and open end wrench set. (All fasteners are metric. Make sure that you have metric tools.) REMOVAL AND INSTALLATION Turn power on. Check to see if treadmill is at or 8% incline.
  • Page 28 T790 Treadmill How To…Replace The Incline Motor - Continued Tools Required: Phillips Screwdriver (All fasteners are metric. Make sure that you have metric tools.) When incline motor needs calibration: When controller is changed. When incline motor is changed. When both controller and incline motor are changed.

  • Page 29: Motor Controller

    T790 Treadmill How To…Replace The Motor Controller Tools Required: Phillips Screwdriver (All fasteners are metric. Make sure that you have metric tools.) REMOVAL AND INSTALLATION At the power switch, turn OFF the unit, then unplug the power cord at the wall outlet.

  • Page 30: Aluminum Side Landing

    T790 Treadmill How To…Replace The Aluminum Side Landing Tools Required: Phillips screwdriver, Sharp nose pliers, and open end wrench set. (All fasteners are metric. Make sure that you have metric tools.) REMOVAL AND INSTALLATION At the power switch, turn OFF the unit, then unplug the power cord at the wall outlet.

  • Page 31: Incline Structure

    T790 Treadmill How To…Replace The Incline Structure Tools Required: Phillips screwdriver, Sharp nose pliers, and open end wrench set. (All fasteners are metric. Make sure that you have metric tools.) REMOVAL AND INSTALLATION At the power switch, turn OFF the unit, then unplug the power cord at the wall outlet.

  • Page 32: Notes

    T790 Treadmill NOTES: Section 3...

  • Page 33: Wiring Block Diagram

    T790 Treadmill SECTION IV ELECTRONIC OVERVIEW WIRING BLOCK DIAGRAM Section 4...

  • Page 34: T790 Console

    Function Description The T790 console is designed to act as an intelligent display and keypad interface. It is intended to work in conjunction with the Motor Control module to form the nucleus of the I/O and control system. The console board periodically reads the keypad input port to check for user’s inputs, updates, refreshing the status of LEDs, data display and...
  • Page 35 T790 Treadmill ELECTRONIC OVERVIEW – T790 CONSOLE - Continued Section 4...
  • Page 36 T790 Treadmill ELECTRONIC OVERVIEW – MOTOR CONTROLLER PCB Function Description The Motor Controller PCBs are designed to act as an interface between the Drive motor, Display Console and the Incline Motor. The desired belt speed and elevation is sent down to the motor controller and incline motor via the users selected input into the console.
  • Page 37 T790 Treadmill ELECTRONIC OVERVIEW – MOTOR CONTROLLER PCB - Continued Section 4...
  • Page 38 T790 Treadmill ELECTRONIC OVERVIEW Section 3...
  • Page 39 T790 Treadmill ELECTRONIC OVERVIEW Section 4...

  • Page 40: Wiring Diagram (Ce Version)

    T790 Treadmill ELECTRONIC OVERVIEW – WIRING DIAGRAM(CE VERSION) Section 3...

  • Page 41: Part List (Ce Version)

    T790 Treadmill ELECTRONIC OVERVIEW – PART LIST(CE VERSION) T790 CE Layout-D-040903 Item. PART NO. Color Length Remark WI221100 BLACK 100mm WI222170 WHITE 170mm WI221270 BLACK 270mm WI222270 WHITE 270mm WI233100 YELLOW/GREEEN 100mm D300030 BLACK 1000mm BLACK 590mm D300032 BLACK 300mm...

  • Page 42: Notes

    T790 Treadmill NOTES: Section 3...

  • Page 43: Section V Parts Identification

    T790 Treadmill SECTION V PARTS IDENTIFICATION Section 5...

  • Page 44: Exploded Drawing

    T790 Treadmill EXPLODED DRAWING T790 (Rev.C) Update: 2005.04.05 Explode drawing & part list 050405 Section 5...
  • Page 45 T790 Treadmill EXPLODED DRAWING T790 (Rev.C) Update: 2005.04.05 Explode drawing & part list 050405 Section 5...
  • Page 46 T790 Treadmill EXPLODED DRAWING T790 (Rev. C) Update: 2005.04.05 Explode drawing & part list 050405 Section 5...
  • Page 47 T790 Treadmill EXPLODED DRAWING PART LIST ITEM No. PART LIST SEPARATE + EXPLODED DRAWING QTY. Anti-slip rubber(R) Connection tube bushing 3(3a~3d) Incline moving wheel assy Screw, dome head, M8x60mm. Washer, flat, M8X1.6mm Incline moving wheel Nut, crown, M8x6.5mm Washer, flat, M8X1.6mm...
  • Page 48 T790 Treadmill EXPLODED DRAWING ITEM No. PART LIST SEPARATE + EXPLODED DRAWING QTY. Deck cushion Support foot assy Upright post assy Console base assy Special screw hex head 18(18a~18e) Side landing assy Single-back sponge rubber Side landing Washer, star R pin Incline motor pin Washer, flat, M6x1.5mm.
  • Page 49 T790 Treadmill EXPLODED DRAWING ITEM No. PART LIST SEPARATE + EXPLODED DRAWING QTY. Screw, dome head, M6x15mm. Screw, socket head, M8x40mm. Washer, curve, M8x1.5mm Front roller assy Drive belt Washer, flat M6x1.6mm Running belt Rear roller assy Deck guard Deck...
  • Page 50 T790 Treadmill EXPLODED DRAWING ITEM No. PART LIST SEPARATE + EXPLODED DRAWING QTY. Upright post (Aluminium) Upright post sub welded Upright post welded Screw, dome head, M6x10mm. Screw, dome head, M5x10mm Handle bar cover(R) Handle bar cover (L) Bottom sensor assy Console connector bracket Screw, dome head, M4x8mm.
  • Page 51 T790 Treadmill SECTION VI MISCELLANEOUS INFORMATION Section 6...

  • Page 52: Preventive Maintenance

    T790 Treadmill PREVENTIVE MAITENANCE TIPS Preventive Maintenance Schedule ITEM WEEKLY MONTHLY QUARTERLY BI-ANNUAL ANNUAL CONSOLE ASSY Hardware Inspect Overlay Clean Inspect CONSOLE BASE ASSY Hardware Inspect Handlebar Inspect Side Hand Rails Inspect Emergency Clean Inspect Switch/Key MAIN FRAME ASSY Hardware...

  • Page 53: Unpackaging Instructions

    T790 Treadmill UNPACKAGING INSTRUCTIONS CAUTION: For your own safety, remove the treadmill from the carton. Remove all banding from the corrugated shipping container. Carefully lift the shipping container (A) up and off of the base tray (I). Remove the handle bar box(C).
  • Page 54 T790 Treadmill PREVENTIVE MAITENANCE TIPS MPORTANT AFETY NSTRUCTIONS! DO NOT position the rear of the treadmill within 6 feet (2 meter) of the nearest obstruction. The sides of the ⇒ treadmill should maintain a minimum clearance of 8 inches (20 cm) from the nearest treadmill or other obstruction.
  • Page 55 OOLS EQUIRED FOR SSEMBLEY… 6mm Hex wrench, 6mm T wrench, 13mm combo wrench and Phillips screwdriver (provided) ARTS ESCRIPTION CONSOLE Qty: 1 CONSOLE BASE Qty: 1 UPRIGHT POST Qty: 1 WASHER, CURVE Qty: 4 M8*1.5mm SCREW, DOME HEAD Qty: 4 M8*60mm WASHER, FLAT Qty: 12...
  • Page 56 T790 Treadmill PREVENTIVE MAITENANCE TIPS Section6...
  • Page 57 IMPORTANT! DO NOT DISCARD THE TOOLS AND HARDWARE KIT. ALL COMPONENTS ARE NEEDED TO COMPLETE THE INSTALLATION ASSEMBLE THE UPRIGHT POST Use 6mm hex wrench to perform this assembly procedure. Connect the cables (A, B) before you assemble the upright post (3) to the base frame(C);...
  • Page 58 T790 Treadmill PREVENTIVE MAITENANCE TIPS so that they lay inside plastics. Then gently set the console (1) on the console base (2) by aligning the three pins. Be careful not to pinch or damage the cables. Once you have the console in place, secure the console with three nuts (11) and washers (4).
  • Page 59 T790 Treadmill COMMUNICATING BY FAX If you would like to submit a part order, or if you need help troubleshooting a problem, we have included, for your convenience, a FAX form on the following page. Simply make a copy (or copies) of the FAX sheet and fill in the necessary information.
  • Page 60 DETAILED DESCRIPTION OF PROBLEM: PRODUCT NAME: SERIAL NO. DETAILED DESCRIPTION OF PROBLEM: TIME RECEIVED: TIME COMPLETED: TECHNICIAN NAME: Healthstream Taiwan Inc. CUSTOMER SUPPORT SERVICES Address: 16-3, Zichiang 1st Road Jhongli, Taoyuan 32063 Taiwan R.O.C. Telephone: 886.3.433.6269 FAX : 886.3.733.6259 Section6...
  • Page 61 T790 Treadmill NOTES: Section 6...

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