SportsArt Fitness 8300 Repair Manual
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SportsArt Fitness 8300 Repair Manual

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8300 and E8300 Elliptical Trainer
Repair Manual (Electronics)
USA Version 2
09-13-04

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Summary of Contents for SportsArt Fitness 8300

  • Page 1 8300 and E8300 Elliptical Trainer Repair Manual (Electronics) USA Version 2 09-13-04...
  • Page 2 Bob Baumgartner at SportsArt America. Thank you. E-mail: bob@sportsartamerica.com Tel: 866 709 1750 ext. 115 8300 Elliptical Trainer Troubleshooting Manual Version 1: April 2002 Version 2: September 13, 2004 - Minor changes were made to reflect the new E8300.
  • Page 3 SportsArt - 8300 Repair Manual (Electronics) - Contents Table of Contents Introduction INTRO.01 – Electronic Part Locations INTRO.02 – Operating the Unit – Power Supply, Start Up, Turn Off, KG/LB INTRO.03 – Display Functions INTRO.04 – Basic Operation – Features, Feedback INTRO.05 –...
  • Page 4 SportsArt - 8300 Repair Manual (Electronics) - Contents Table of Contents (Cont.) Optic Sensor OS.01 – Optic Sensor Operation Diagram OS.02 – Optic Sensor Signal Illustration OS.03 – Optic Sensor Operation OS.04 – Optic Sensor Test Illustration (Distance, Upper Wires) OS.05 –...
  • Page 5 SportsArt - 8300 Repair Manual (Electronics) - Contents Table of Contents (Cont.) Display – Wiring, Signal, Power (Cont.) DIWSP.06 – Display Board Main CPU Location DIWSP.07 – Display Board LED Locations and Functions DIWSP.08 – Display Board Power LED Location DIWSP.09 –...
  • Page 6 SportsArt - 8300 Repair Manual (Electronics) - Contents Table of Contents (Cont.) Resistance RES.01 – Load Resistance Operation Diagram RES.02 – Resistance Operation RES.03 – Resistance Operation Illustration RES.04 – Symptom of Malfunction, Troubleshooting RES.05 – Drive Board VDD Test RES.06 –...
  • Page 7 SportsArt - 8300 Repair Manual (Electronics) - Contents Table of Contents (Cont.) Stride Operation (Cont.) STRIDE.08 – Stride Motor Protective Function STRIDE.09 – Stride Motor Protective Function – Drive Board Indicators STRIDE.10 – Stride Protective Function LED Operation – When Malfunction Occurs STRIDE.11 –...
  • Page 8 SportsArt - 8300 Repair Manual (Electronics) - Contents Table of Contents (Cont.) Error Message: ERR7 SERS.01 – Error Message: ERR7, Symptoms of Malfunction SERS.02 – VR Signal Operation SERS.03 – ERR7 Operation SERS.04 – ERR7 Operation Flow Chart SERS.05 – ERR7 Simulation, Troubleshooting Stride Test Points STRDTST.01 –...
  • Page 9 SportsArt - 8300 Repair Manual (Electronics) - Contents Table of Contents (Cont.) Stride Set Calibration STRDCAL.01 – Stride Set Calibration, Steps 1-2 STRDCAL.02 – Stride Set Calibration, Steps 3-4 STRDCAL.03 – Stride Set Calibration, Step 5 STRDCAL.04 - Stride Set Calibration, Step 6-7 Reference REF.01 –...
  • Page 10 SportsArt - 8300 Repair Manual (Electronics) - Introduction Introduction INTRO.01 – Electronic Part Locations INTRO.02 – Main Features, Power Supply, Start Up, Turn Off, KG/LB INTRO.03 – Display Features INTRO.04 – Feature Overview INTRO.05 – Programs INTRO.06 – Control Modes INTRO.07 –...
  • Page 11 (VR and Motor Set) Cover Note: The E8300 display differs from the 8300. All other parts are the same. For brevity sake, in this manual, 8300=E8300. In the section on display operation, only the 8300 is shown. For E8300 display information, refer to notes marked E8300.

  • Page 12: Main Features

    Generator-powered unit must be operated at 25 steps per minute or more to get stride function. STEP TO START appears on display if exercise speed is too slow for generator operation. Start Up There are two ways to start the 8300 Elliptical Trainer: (1) Generator Start: Exercise on the unit; (2) Battery Start: Press display ON key. Turn Off There are two ways to turn off the unit: (1) Automatic - Don’t exercise on the unit.

  • Page 13: Display Features

    SportsArt - 8300 Repair Manual (Electronics) - Introduction Display Features HEART RATE Window Shows the POLAR or HTR heart rate value Main Window Shows operation mode or instructions Calorie Window Shows calorie expenditure STEPS/MIN Window Shows speed as steps per...

  • Page 14: Feature Overview

    SportsArt - 8300 Repair Manual (Electronics) - Introduction Feature Overview The 8300 Elliptical Trainer features adjustable stride and resistance levels, provides user feedback including calorie count, step count, heart rate, time in use, and offers three control modes including manual, exercise programs and interval programs.
  • Page 15 SportsArt - 8300 Repair Manual (Electronics) - Introduction Programs PROGRAM 1- 6 PROGRAM 7-12 ENTER MANUAL/SET PROGRAM INTERVAL INTRO.05...

  • Page 16: Control Modes

    SportsArt - 8300 Repair Manual (Electronics) - Introduction Control Modes Press MANUAL/SET key to toggle between MANUAL, SET and HRC prompts. Press ENTER to confirm your choice. Control Operation Modes Manual In MANUAL mode, press display keys or handlebar switches to directly set STRIDE and LEVEL values.
  • Page 17 SportsArt - 8300 Repair Manual (Electronics) - Introduction Component Relationships POLAR HR STRIDE Transmitter Switch STRIDE PULSE Display Board LEVEL HTR Handlebar Switch LEVEL Generator Magnet Voltage Voltage Generator Magnet Battery Drive Board Voltage Battery Optic Sensor Motor Motor Voltage...

  • Page 18: Power Parts

    SportsArt - 8300 Repair Manual (Electronics) - Introduction Power Parts Optic Sensor Generator Battery Magnet+Flywheel Drive Board INTRO.08...

  • Page 19: General Operation

    SportsArt - 8300 Repair Manual (Electronics) - Introduction General Operation 1) Exercise on the unit. The flywheel spins. 2) Flywheel movement makes the generator produce power. 3) Flywheel movement makes the reflective sticker on the flywheel move. 4) The optic sensor detects the movement and sends its signal to the drive board.
  • Page 20 SportsArt - 8300 Repair Manual (Electronics) - Generator Generator GEN.01 – Voltage and Signal Flow – General GEN.02 – Power Part Illustration GEN.03 – Generator Power Supply – Diagram GEN.04 – Generator Power Supply – Illustration GEN.05 – Generator Power Supply and Start Up Process GEN.06 –...
  • Page 21 SportsArt - 8300 Repair Manual (Electronics) – Generator Voltage and Signal Flow – General POLAR HR STRIDE Transmitter Switch STRIDE PULSE Display Board LEVEL HTR Handlebar Switch LEVEL Generator Magnet Voltage Voltage Generator Magnet Battery Drive Board Voltage Battery Optic Sensor...
  • Page 22 SportsArt - 8300 Repair Manual (Electronics) - Generator Power Part Illustration Optic Sensor Generator Battery Magnet+Flywheel Drive Board GEN.02...
  • Page 23 SportsArt - 8300 Repair Manual (Electronics) - Generator Generator Power Supply - Diagram Display Board Vbat Generator 2 pin 2 pin Battery Drive Board Optic Sensor 3 pin GEN.03...
  • Page 24 SportsArt - 8300 Repair Manual (Electronics) - Generator Generator Power Supply - Illustration GEN.04...
  • Page 25 SportsArt - 8300 Repair Manual (Electronics) - Generator Generator Power Supply and Start Up Process Order Part Operation Generator 1. Exercise on the unit. The flywheel rotates, driving the generator to produce power. Wires - GEN to 1. Generator voltage travels wires to the drive board.

  • Page 26: Generator Troubleshooting

    SportsArt - 8300 Repair Manual (Electronics) - Generator Generator Troubleshooting Possible generator malfunctions show the following symptoms. 1. Exercise on the unit. The display doesn’t light up. No electronic functions operate. There is no resistance. 2. Generator F1 2-amp fuse on the drive board is blown.
  • Page 27 SportsArt - 8300 Repair Manual (Electronics) - Generator Generator Voltage Test – Location: Drive Board Connector GEN.07...

  • Page 28: Troubleshooting Tips

    SportsArt - 8300 Repair Manual (Electronics) - Generator Generator Voltage Test Process 1. Make sure all wires are connected. Do not detach any drive board wire connections. 2. Put the multimeter to the DC 200V setting. 3. Place multimeter probes on the drive board CON1 generator black and white wire connector points as shown.

  • Page 29: Optic Sensor

    SportsArt - 8300 Repair Manual (Electronics) – Optic Sensor Optic Sensor OS.01 – Optic Sensor Operation Diagram OS.02 – Optic Sensor Signal Illustration OS.03 – Optic Sensor Operation OS.04 – Optic Sensor Test Illustration OS.05 – Optic Sensor Signal and Voltage Test at Drive Board – Illustration OS.06 –...
  • Page 30 SportsArt - 8300 Repair Manual (Electronics) – Optic Sensor Optic Sensor Operation Diagram Display Board CLOCK Flywheel/ CLOCK Infrared Optic Reflective Drive Board 3 PIN Sensor Sticker CLK Indicator OS.01...
  • Page 31 SportsArt - 8300 Repair Manual (Electronics) - Optic Sensor Optic Sensor Signal Flow Illustration STEP/MIN value appears on the display window. OS.02...
  • Page 32 SportsArt - 8300 Repair Manual (Electronics) - Optic Sensor Optic Sensor Operation Order Part Operation Exercise on the unit. Flywheel rotates. Reflective sticker on the flywheel Flywheel rotates. Generator Flywheel rotation drives the generator, making it produce power. Black and White Power travels the generator wires to the drive board.
  • Page 33 SportsArt - 8300 Repair Manual (Electronics) - Optic Sensor Optic Sensor Test Illustration Possible Symptoms of Malfunction: (1) No steps per minute value on display; (2) CLK LED on drive board doesn’t light. Inspect the following. Fig. 1: Distance from Optic Sensor to Reflective Sticker Fig.
  • Page 34 SportsArt - 8300 Repair Manual (Electronics) - Optic Sensor Optic Sensor Signal and Voltage Test at Drive Board – Illustration Drive Board CN1 Connector Optic Sensor Wires Black Yellow Red Black to Red: 5 VDC Black to Yellow: 1.5 to 3.5 VDC, depending on speed...

  • Page 35: Inspection Points

    SportsArt - 8300 Repair Manual (Electronics) - Optic Sensor Inspection Points 1. Distance: Optic sensor should be about 1/4 inch or 3-7mm from the reflective sticker. 2. Voltage to Optic Sensor: Put meter to the 20 VDC setting. Place probes on the red and black wire connector points.
  • Page 36 SportsArt - 8300 Repair Manual (Electronics) - Battery Battery BAT.01 – Start Up Process – Diagram, Battery Start Up – Explanation BAT.02 – Battery Operation Illustration BAT.03 – Manual Shut Off Operation – Explanation, Automatic Shut Off Operation – Illustration and Explanation BAT.04 –...
  • Page 37 SportsArt - 8300 Repair Manual (Electronics) - Battery Battery Start Up Process - Diagram Display Board Soft Keys ON,OFF Drive Board Battery 2 pin Battery Start Up - Explanation Order Part Operation Battery 1. When the unit is not in use, the battery power supply lies ready.
  • Page 38 SportsArt - 8300 Repair Manual (Electronics) - Battery Battery Operation Illustration BAT.02...
  • Page 39 SportsArt - 8300 Repair Manual (Electronics) - Battery Manual Shut Off Operation - Explanation Order Part Operation Soft Keys 1. Simultaneously press the MODE<▼> and STRIDE<▼> keys. Display Board 1. The display board CPU reads the signal to turn off the unit.
  • Page 40 SportsArt - 8300 Repair Manual (Electronics) - Battery Message: SERVICE BATTERY Battery Signal Diagram If battery voltage falls below 22 volts, the BAT_LOW LED indicator on the drive board Display Board lights, and the display shows the message “SERVICE BATTERY”.

  • Page 41: Troubleshooting

    SportsArt - 8300 Repair Manual (Electronics) - Battery Symptoms of Low Battery Voltage 1. Press the <ON> key. The display does not light up. 2. Press the <ON> key. The display lights up. “SERVICE BATTERY” appears. 3. Press the STRIDE <▲> or <▼> key. “SERVICE BATTERY” appears.

  • Page 42: Battery Test Procedure

    SportsArt - 8300 Repair Manual (Electronics) - Battery Battery Voltage Test at the Drive Board - Illustration Battery Fuse (F2) 2A Battery Test Procedure 1. Don’t detach any wire connections from the drive board. 2. Inspect whether the battery fuse F2 is broken. If so, replace the fuse.
  • Page 43 SportsArt - 8300 Repair Manual (Electronics) – Display Wiring, Signal, Power Display Wiring, Signal, Power DIWSP.01 – Soft Key Signal Flow Diagram and Explanation DIWSP.02 – Display Keypad and Handle Switch Signal Flow DIWSP.03 – Wire Connections for Display Board with HRC + HTR DIWSP.04 –...
  • Page 44 SportsArt - 8300 Repair Manual (Electronics) –Display Wiring, Signal, Power Soft Key Signal Flow Diagram and Explanation LEVEL LEVEL Switch on Handle Key Signal Soft Keys Display Board STRIDE STRIDE Switch on Handle Order Part Operation 1. Press the display keys.
  • Page 45 SportsArt - 8300 Repair Manual (Electronics) – Display Wiring, Signal, Power Display Keypad and Handle Switch Signal Flow DIWSP.02...
  • Page 46 POLAR IN and is on the lower right of the display back. Other connector locations also differ from those of the 8300. On E8300, CON1 is for the main data cable; CON2 is for Level and Stride switch wires.
  • Page 47 SportsArt - 8300 Repair Manual (Electronics) – Display Wiring, Signal, Power Display Board HTR Board Wire Connections Display Board CON6 Note: On E8300, the HTR board wire connector marked HTR IN, not CON6. It HTR Board is on the top left of the display back.
  • Page 48 SportsArt - 8300 Repair Manual (Electronics) – Display Wiring, Signal, Power Display Board Main CPU Location U7 Main CPU Note: On E8300, main CPU is on the lower left of the display back. DIWSP.05...
  • Page 49 SportsArt - 8300 Repair Manual (Electronics) – Display Wiring, Signal, Power Display Board LED Locations and Functions Main window shows prompts or Heart rate window modes shows heart rate value Calorie window Steps/minute shows calorie window expenditure shows speed as...
  • Page 50 SportsArt - 8300 Repair Manual (Electronics) – Display Wiring, Signal, Power Display Board Power LED Location Display LED 1: Power LED If lit, there is power to the display board. Note: On E8300, the power LED is marked LED1 and is on the left side of the display back.
  • Page 51 SportsArt - 8300 Repair Manual (Electronics) – Display Wiring, Signal, Power Display Board VCC Voltage Test - Capacitor U7 Main CPU E8300, probe capacitor just above power LED1 on the left side. Normal voltage: 5.25 VDC. DIWSP.08...
  • Page 52 SportsArt - 8300 Repair Manual (Electronics) – Display Wiring, Signal, Power Display Board Power Troubleshooting Possible symptom of malfunction: Exercise on the unit or press the display “ON” key. Display doesn’t light up. Other points to inspect: Generator, battery, drive board, and wiring.
  • Page 53 SportsArt - 8300 Repair Manual (Electronics) – Drive Board Wiring, LEDs, Power Drive Board Wiring, LEDs, Power DRWLP.01 – Drive Board Wire Connections DRWLP.02 – Drive Board Component Placement DRWLP.03 – Drive Board LED Indicators: Stride and Optic Sensor DRWLP.04 – Drive Board LED Indicators: Stride and Battery DRWLP.05 –...

  • Page 54: Drive Board Wire Connections

    SportsArt - 8300 Repair Manual (Electronics) – Drive Board Wiring, LEDs, Power Drive Board Wire Connections 8300 DRIVE BOARD Optic Incline Incline Display Magnet Generator Battery Set 2 Set 1 Sensor Note: Wire colors may differ. E8300 and 8300 use the same drive board. DRWLP.01...
  • Page 55 SportsArt - 8300 Repair Manual (Electronics) – Drive Board Wiring, LEDs, Power Drive Board Component Placement DRWLP.02...
  • Page 56 SportsArt - 8300 Repair Manual (Electronics) – Drive Board Wiring, LEDs, Power Drive Board LED Indicators: Stride and Optic Sensor LED4 R_DN Indicator Lit=>Right side stride motor is being sent power to go down. LED3 R_UP Indicator Lit=>Right side stride motor is being sent power to go up.
  • Page 57 SportsArt - 8300 Repair Manual (Electronics) – Drive Board Wiring, LEDs, Power Drive Board LED Indicators – Stride and Battery LED13 OVER_R Indicator Not Lit=>Right stride motor amp draw is too high. LED12 OVER_L Indicator Not Lit=>Left stride motor amp draw is too high.
  • Page 58 SportsArt - 8300 Repair Manual (Electronics) – Drive Board Wiring, LEDs, Power Drive Board LED Indicators: Stride, CLK, Power LED10 22V Indicator Lit=>Drive board is sending LED1 CLK Indicator Flashing=>The optic sensor signal is power to the stride motors. entering the drive board.

  • Page 59: Troubleshooting

    SportsArt - 8300 Repair Manual (Electronics) – Drive Board Wiring, LEDs, Power Symptoms of Drive Board Malfunction 1. User exercises on the unit, but the display does not light up. 2. User exercises on the unit, but there is no resistance.
  • Page 60 Drive Board Circuit Definitions The 8300 drive board has test points for voltages that power various functions. Below is a list of these voltage names, along with an explanation of their duty. Measuring voltages at various test points is easy: Put the multimeter black probe on the CN1 ground pin.
  • Page 61 SportsArt - 8300 Repair Manual (Electronics) – Drive Board Wiring, LEDs, Power Drive Board VH Voltage Test DRWLP.08...
  • Page 62 SportsArt - 8300 Repair Manual (Electronics) – Drive Board Wiring, LEDs, Power Drive Board VDD Voltage Test DRWLP.09...
  • Page 63 SportsArt - 8300 Repair Manual (Electronics) – Drive Board Wiring, LEDs, Power Drive Board +5V Voltage Test DRWLP.10...
  • Page 64 SportsArt - 8300 Repair Manual (Electronics) – Drive Board Wiring, LEDs, Power Drive Board VCC Voltage Test DRWLP.11...
  • Page 65 SportsArt - 8300 Repair Manual (Electronics) - Resistance Resistance RES.01 – Resistance Operation Diagram RES.02 – Resistance Operation RES.03 – Resistance Operation Illustration RES.04 – Symptoms of a Malfunction, Troubleshooting RES.05 – Drive Board VDD (Resistance) Circuit Voltage Test RES.06 – Resistance Voltage Test at Wires on Drive Board RES.07 –...
  • Page 66 SportsArt - 8300 Repair Manual (Electronics) - Resistance Resistance Operation Diagram Display Board Vload Generator 2 pin 2 pin Magnet Drive Board Flywheel 3 pin Optic Sensor RES.01...

  • Page 67: Resistance Operation

    SportsArt - 8300 Repair Manual (Electronics) - Resistance Resistance Operation The following tells what happens when the user presses LEVEL<▲> or LEVEL<▼> while exercising. Resistance Minimum: 1. Maximum: 20. Order Part Operation 1. Exercise on the unit. The flywheel rotates. The generator produces power for the drive and Generator display board.
  • Page 68 SportsArt - 8300 Repair Manual (Electronics) - Resistance Resistance Operation Illustration RES.03...
  • Page 69 SportsArt - 8300 Repair Manual (Electronics) - Resistance Symptoms of a Malfunction 1. Exercise on the unit. Press LEVEL Up key. The display LEVEL value increases but there is no resistance. 2. Exercise on the unit. Drive board F1 2A fuse breaks.
  • Page 70 SportsArt - 8300 Repair Manual (Electronics) - Resistance Drive Board VDD (Resistance) Circuit Voltage Test RES.05...
  • Page 71 SportsArt - 8300 Repair Manual (Electronics) - Resistance Resistance Voltage Test at Wires on Drive Board RES.06...

  • Page 72: Magnet Ohm Test

    SportsArt - 8300 Repair Manual (Electronics) - Resistance Magnet OHM Test Note: Disconnect magnet wires from the drive board. Place probes on the two blue wires. Normal Reading: 16-20 Ohms. If not 16-20 Ohms, the magnet has a short or an open (broken) circuit.

  • Page 73: Heart Rate Function

    SportsArt - 8300 Repair Manual (Electronics) – Heart Rate Heart Rate Function HR.01 – Heart Touch Rate (HTR) Operation Diagram, Heart Touch Rate (HTR) Operation HR.02 – POLAR Heart Rate Operation Diagram, POLAR Heart Rate Operation Explanation HR.03 – Heart Touch Rate Board Diagram, Heart Touch Rate Board LED Indicator Definitions HR.04 –...
  • Page 74 SportsArt - 8300 Repair Manual (Electronics) – Heart Rate Heart Touch Rate (HTR) Operation Diagram HTR Handlebar HANDLE BAR PULSE Display Board 心跳小板 3 PIN CABLE HR Board HTR Handlebar HANDLE BAR Heart Touch Rate (HTR) Operation Order Part Operation HTR Handlebar 1.Place both hands on the HTR handlebars.
  • Page 75 SportsArt - 8300 Repair Manual (Electronics) - Resistance POLAR Heart Rate (HR) Operation Diagram POLAR POLAR HTR Board Display Board HR Transmitter Receiver Board 3-pin Cable POLAR Heart Rate (HR) Operation Explanation Order Part Operation 1. POLAR transmitter detects the user’s heart rate.
  • Page 76 SportsArt - 8300 Repair Manual (Electronics) – Heart Rate Heart Touch Rate Board Diagram HTR心跳小板 HTR Board LED1 LED2 LED3 LED4 Heart Touch Rate Board LED Indicator Definitions LED1 LED2 LED3 LED4 Board X - Not lit in HTR Lights when user...
  • Page 77 SportsArt - 8300 Repair Manual (Electronics) - Resistance Error Message: ERR12 Note: ERR12 was eliminated from the programming in products made after Sept. 22, 2001. To troubleshoot ERR12, first check that there is no mechanical reason for ERR12 (below). Then replace the main program IC chip with an updated version.

  • Page 78: Troubleshooting Chart

    SportsArt - 8300 Repair Manual (Electronics) – Heart Rate Possible Problems with HTR and Polar Possible problems include the following: (1) Hold onto the HTR handlebar or strap on a Polar heart rate transmitter. The display PULSE window shows no heart rate value. (2) PULSE window shows the heart rate value inappropriately -- when the unit is first turned on or when no one touches the HTR handlebar or no one wears the Polar strap.
  • Page 79 SportsArt - 8300 Repair Manual (Electronics) - Stride Stride Operation STRIDE.01 – Stride Operation Diagram STRIDE.02 – Stride Operation Illustration STRIDE.03 – Stride Power Operation STRIDE.04 – Stride Indicators on the Drive Board STRIDE.05 – Stride Up/Down Operation STRIDE.06 – Stride Indicator LEDs on the Drive Board STRIDE.07 –...
  • Page 80 SportsArt - 8300 Repair Manual (Electronics) - Stride Stride Operation Diagram Display Board UP,DN AD1,AD2 Generator Voltage Battery Generator Voltage Optic Sensor Drive Board Battery Signal Optic Sensor Motor Motor Voltage Voltage STRIDE STRIDE Incline VR Set Incline VR Set...
  • Page 81 SportsArt - 8300 Repair Manual (Electronics) - Stride Stride Operation Illustration STRIDE.02...
  • Page 82 SportsArt - 8300 Repair Manual (Electronics) - Stride Stride Power Operation Display Board Generator Voltage Battery Generator Voltage Optic Sensor Drive Board Battery Signal Optic Sensor Order Part Operation Generator 1. Exercise on the unit. The generator produces power for the drive board.
  • Page 83 SportsArt - 8300 Repair Manual (Electronics) - Stride Stride Indicators on the Drive Board LED 10 +22V Indicator – Stride motor power LED lights, indicating normal power supply for stride. LED 1 CLK Indicator – Optic sensor LED LED 11 PWR Indicator – Power LED lights, flashes or remains lit, indicating normal optic indicating normal power supply.
  • Page 84 SportsArt - 8300 Repair Manual (Electronics) - Stride Stride Up/Down Operation Order Part Operation Display 1. The CPU detects whether there is an optic Display Board sensor signal. If there is, then the STRIDE function is activated. 2. The CPU reads the STRIDE keypad signal.
  • Page 85 SportsArt - 8300 Repair Manual (Electronics) - Stride Stride Indicator LEDs on the Drive Board LED4 (R_DN) Indicator LED6 (L_DN) Indicator LED3 (R_DN)燈 When simultaneously lit, the left and right stride motors are activated, lowering the stride linkages on the support arms.
  • Page 86 SportsArt - 8300 Repair Manual (Electronics) - Stride Stride VR Feedback Process Order Part Operation Display Board Left, 1. Left and right motor operation drives the VR set. Right 2. As the VR moves, the STRIDE incline VR value VR Set changes.
  • Page 87 SportsArt - 8300 Repair Manual (Electronics) - Stride Stride Motor Protective Function Part Operation 1 Display 1. User presses stride UP or DOWN key. Display Board UP - Display board emits the stride UP signal, making the stride motor lift the stride linkage.
  • Page 88 SportsArt - 8300 Repair Manual (Electronics) - Stride Stride Protective Function - Drive Board Indicators OVER_R, OVER_L OVER_R,OVER_L 1. When the right stride motor is stuck, the drive board 1. 右搖擺臂 STRIDE 升降卡死，OVER_R 燈 OVER_R indicator extinguishes. 2. When the left stride motor is stuck, the drive board OVER_L 不亮...
  • Page 89 SportsArt - 8300 Repair Manual (Electronics) - Stride Stride Protection LEDs Under Stride Malfunction Step Operation Exercise on the unit. Under normal conditions, drive board OVER_R, OVER_L, PWR_ON_R, PWR_ON_L indicators light. Press the STRIDE UP or DOWN key to make the stride motor operate.
  • Page 90 SportsArt - 8300 Repair Manual (Electronics) - Stride Stride VR Protection Function Part Operation 1 VR set 1. Stride motor movement turns the VR gear, making the Display Board VR value change. 2. When the stride motor operates up, the VR voltage increases.
  • Page 91 SportsArt - 8300 Repair Manual (Electronics) - Stride Stride VR Protective Function LEDs VR1_ERR，VR2_ERR LED3 (R_DN)燈 When the stride error indicators light, stride motor operation stops. LED5 (L_DN)燈 STRIDE.12...
  • Page 92 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes Stride Window Flashes SWF.01 – Error Message: Stride Window Flashes, Diagram SWF.02 – Stride Function Illustration SWF-S.01 – Stride Window Flashes – Speed SWF-S.02 – Optic Sensor and Battery Role in Stride Operation SWF-S.03 –...
  • Page 93 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes - Speed Stride Window Flashes – Speed When the speed is under 25 steps per minute, or the drive board battery is low (BAT_Lo indicator is lit), and the stride key is pressed, the stride window flashes.
  • Page 94 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes - Speed Optic Sensor and Battery Role in Stride Operation 燈 SWF-S.02...
  • Page 95 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes - Speed Stride Window Flashes – Speed – Operation Flow Chart Optic Sensor Battery Battery CLK? Voltage? Drive Board BAT_LO Indicator Doesn't Light CLK Indicator Flashes? SWF-S.03...
  • Page 96 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes - Speed Stride Window Flashes – Speed – Operation Flow Chart (Cont.) ¢Ï Display Board STEPS/MIN >25? Vbat_LO Indicator Not Lit? Press STRIDE key. STRIDE window Press STRIDE Key flashes; STRIDE STRIDE Value doesn't operate.
  • Page 97 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes - Speed Speed Issue Troubleshooting Item Part Troubleshooting 1. Exercise on the unit. Inspect whether the drive board CLK indicator lights. Optic 2. Take one step per second. The STEPS/MIN window should show 60.
  • Page 98 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes – No Operation Stride Window Flashes – No Stride Operation Order Part Operation 1. Press the STRIDE<▲> key. The display board sends the STRIDE_UP signal to the drive board. The Display drive board R_UP and L_UP indicators light.
  • Page 99 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes – No Operation No Stride Operation – Stride Window Flashes – Flow Chart Display Board Press the STRIDE Key? STRIDE UP, DOWN? Drive Board +22V Indicator Lights? R_UP or R_DN Indicator Lights? SWF-NSO.02...
  • Page 100 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes – No Operation L_UP L_DN Indicator Lights? STRIDE Incline Motor (Left, Right) Incline Operates Up or Down? STRIDE Incline VR Set VR1,VR2 Voltage Changes? SWF-NSO.03...
  • Page 101 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes – No Operation Drive Board VR1,VR2? Display Board VR1,VR2 Changes? STRIDE Incline STRIDE Window Operates Normally Flashes SWF-NSO.04...
  • Page 102 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes – No Operation No Stride Operation – Stride Window Flashes - Troubleshooting Item Part Troubleshooting 1. Press the STRIDE<▲> key. The drive board R_UP and L_UP indicator lights. Display 2. Press the STRIDE<▼> key. The drive board R_DN and L_DN indicator lights.
  • Page 103 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes – VR Error Stride Window Flashes – VR Error The VR voltage exceeds the range; the stride window flashes. Display Board UP, DN VR1,VR2 OVER_R OVER_L PWR_DN_L Drive Board PWR_DN_R...
  • Page 104 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes – VR Error VR Voltage Exceeds Range - Illustration SWF-VRER.02...
  • Page 105 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes – VR Error Stride Window Flashes – VR Voltage Exceeds Range – Explanation Order Part Operation STRIDE 1. In down operation, the drive board R_UP and L_UP indicators light. Motors Left, 2.
  • Page 106 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes – VR Error Stride Window Flashes – VR Exceeds Range – Flow Chart STRIDE Incline Motor Set (Left, Right) Not Stuck? STRIDE Incline VR Set (Left, Right) VR1,VR2 0.7-4.4V? Drive Board...
  • Page 107 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes – VR Error PWR_DN_L PWR_DN_R Lights? VR1_ERR VR2_ERR Lights? Display Board VR1,VR2 Voltage Change? STRIDE Window Flashes; STRIDE Stride Doesn't Operate Operates Up/Down SWF-VRER.05...
  • Page 108 SportsArt - 8300 Repair Manual (Electronics) – Stride Window Flashes – VR Error Stride Window Flashes – VR Exceeds Range - Troubleshooting Item Part Troubleshooting 1. Press down on the main program IC. Display 2. Inspect the 16-pin cable connection.
  • Page 109 SportsArt - 8300 Repair Manual (Electronics) – ERR7 Error Message: ERR7 ERR7.01 – Error Message: ERR7, Circumstance of Malfunction ERR7.02 – VR Signal Operation Illustration ERR7.03 – ERR7 Operation Explanation ERR7.04 – ERR7 Operation Flow Chart ERR7.05 – ERR7 Simulation, ERR7 Troubleshooting...
  • Page 110 SportsArt - 8300 Repair Manual (Electronics) – ERR7 Error Message: ERR7 The display CPU has not read the stride incline VR1, VR2 voltage value. Or the display stride VR1, VR2 voltage value exceeds the set range. Circumstance of Malfunction 1. Press the “ON” key. After the display lights up, ERR7 appears on the display.
  • Page 111 SportsArt - 8300 Repair Manual (Electronics) – ERR7 VR Signal Operation Illustration ERR7.02...
  • Page 112 SportsArt - 8300 Repair Manual (Electronics) – ERR7 ERR7 Operation Explanation Order Part Operation Stride VR1, VR2 1. When the stride motor operates, VR1, VR2 voltage changes. 10-pin Cable 1. The VR1, VR2 voltage value travels the 10-pin cable to the drive board.
  • Page 113 SportsArt - 8300 Repair Manual (Electronics) – ERR7 ERR7 Operation Flow Chart STRIDE Incline VR (Left, Right) VR1,VR2? Drive Board (Reads VR Voltage) VR1 Lights VR2 Lights Display Board VR1,2>0.8V VR1,2<4.1V Display Lights; Display Normal Operation Shows ERR7 ERR7.04...
  • Page 114 SportsArt - 8300 Repair Manual (Electronics) – ERR7 ERR7 Simulation Order Operation When the unit is off (the display is not lit), remove the 10-pin incline cable. Exercise on the unit. The drive board VR1_ERR,VR1_ERR indicator lights. After the display lights up, the main window immediately shows “ERR7” for five seconds, then “MAN’L”...
  • Page 115 SportsArt - 8300 Repair Manual (Electronics) – Stride Test Points Stride Test Points STRDTST.01 – Drive Board +22V Circuit Test – Illustration STRDTST.02 – Drive Board +22V Circuit Test – Instructions, Symptom of Malfunction STRDTST.03 – Stride Motor Power at Drive Board – Motor 1 STRDTST.04 –...
  • Page 116 SportsArt - 8300 Repair Manual (Electronics) – Stride Test Points Drive Board +22V Circuit Test - Illustration +22V Indicator STRDTST.01...
  • Page 117 SportsArt - 8300 Repair Manual (Electronics) – Stride Test Points Drive Board +22V Circuit Test - Instructions The drive board +22V circuit provides power for stride action. Inspect this circuit by checking the +22V LED. When the unit is in operation, the 22V circuit LED lights. The LED is in the middle of the drive board.
  • Page 118 SportsArt - 8300 Repair Manual (Electronics) – Stride Test Points Stride Motor Power at Drive Board – Motor 1 STRDTST.03...
  • Page 119 SportsArt - 8300 Repair Manual (Electronics) – Stride Test Points Stride Motor Power at Drive Board – Motor 2 STRDTST.04...
  • Page 120 SportsArt - 8300 Repair Manual (Electronics) – Stride Test Points Testing Stride Motor Power at the Drive Board 1. Don’t detach any wires from the drive board. Place probes as shown on STRDTST.03 and STRDTST.04. Note: Wire colors may vary but positions will not vary.
  • Page 121 SportsArt - 8300 Repair Manual (Electronics) – Stride Test Points Stride Motor Voltage Test at the Shoulder - Illustration STRDTST.06...
  • Page 122 SportsArt - 8300 Repair Manual (Electronics) – Stride Test Points Stride Motor Voltage at the Shoulder – Instructions 1. Don’t detach any wires from the drive board or shoulder. 2. Put multimeter to the 200 VDC setting. Back-probe at the brown and blue wire connectors as shown.
  • Page 123 SportsArt - 8300 Repair Manual (Electronics) – Stride Test Points VR Output Test at the Drive Board - VR1 STRDTST.08...
  • Page 124 SportsArt - 8300 Repair Manual (Electronics) – Stride Test Points VR Output Test at the Drive Board – VR2 STRDTST.09...
  • Page 125 SportsArt - 8300 Repair Manual (Electronics) – Stride Test Points VR Output Test at Drive Board - Instructions 1. Don’t detach any wire connections from the drive board. 2. Press the <ON> key to start up the unit. 3. Put the multimeter to the 20 VDC setting. Place probes as shown.
  • Page 126 SportsArt - 8300 Repair Manual (Electronics) – Stride Test Points VR Output Voltage at the Shoulder – Illustration STRDTST.11...
  • Page 127 SportsArt - 8300 Repair Manual (Electronics) – Stride Test Points VR Output Voltage Test at the Shoulder - Instructions 1. Don’t detach any wires from the drive board or connector at the shoulder. 2. Put the multimeter to the 20 VDC setting. Place probes as shown.
  • Page 128 SportsArt - 8300 Repair Manual (Electronics) – Stride Test Points Voltage Test Summary at Shoulder ORANGE (VCC) WHITE (VR) STRIDE BLACK (GND) INCLINE VR TO DRV BROWN (M+) STRIDE BLUE (M-) INCLINE MOTOR Test Procedure Do not detach wire connections. Back-probe on wire connectors as indicated. Exercise on the unit. Operate stride function.
  • Page 129 SportsArt - 8300 Repair Manual (Electronics) – Stride Calibration Stride Set Calibration STRDCAL.01 – Stride Set Calibration, Steps 1-2 STRDCAL.02 – Stride Set Calibration, Steps 3-4 STRDCAL.03 – Stride Set Calibration, Step 5 STRDCAL.04 – Stride Set Calibration, Step 6-7...
  • Page 130 SportsArt - 8300 Repair Manual (Electronics) – Stride Calibration Stride Motor/VR Calibration Step 1. Remove screws as shown (Figures 1-3). (Figure 1) (Figure 2) (Figure 3) Step 2. Detach the stride linkage as shown (Fig. 4). (Figure 4) STRDCAL.01...
  • Page 131 SportsArt - 8300 Repair Manual (Electronics) – Stride Calibration Step 3. Detach the stride motor and VR wire connectors and remove the stride motor set as shown (Fig. 5-6). (Figure 5) (Figure 6) Step 4. If you are installing a new stride motor, remove the protective plate shown in Figure 7.
  • Page 132 SportsArt - 8300 Repair Manual (Electronics) – Stride Calibration Step 5. Calibrate the stride set electronically and mechanically. Ａ Ｂ Ｃ Electronic Calibration Mechanical Calibration 1. Reconnect the stride VR cables. 1. Without changing the electronic 2. Put multimeter to the 20 VDC setting. Place calibration in Step 4, rotate the stride probes on the white and black wires as shown.
  • Page 133 SportsArt - 8300 Repair Manual (Electronics) – Stride Calibration Step 6. Reinstall the stride motor set. Step 7. Test stride operation. (1) Exercise on the unit. Press the stride down key until 450 mm (or 17 inch) shows on the display;...
  • Page 134 SportsArt - 8300 Repair Manual (Electronics) – Reference Reference REF.01 – Voltage Specifications on the Display Board, Voltage Specifications on the Drive Board REF.02 – Drive Board CN1 Voltage Specifications, Magnet Specifications REF.03 – Stride Set Voltages at the Shoulder Joint, Stride Set Voltages at CON2 REF.04 –...
  • Page 135 SportsArt - 8300 Repair Manual (Electronics) – Reference Voltage Specifications on the Display Board Test Test Method Location Test Method Voltage Significance C20 Capacitor Place one probe on C20 capacitor on display Place one probe on 5 VDC Shows whether display board is...

  • Page 136: Magnet Specifications

    SportsArt - 8300 Repair Manual (Electronics) – Reference Drive Board CN1 Voltage Specifications Test Wire Test Method Normal Significance Colors From Black Put black probe on CN1 BLACK wire connector Varies When flywheel turns, generator supplies 100+ Generator and red probe on CN1 WHITE wire connector ~100 VDC to drive board.
  • Page 137 SportsArt - 8300 Repair Manual (Electronics) – Reference Stride Set Voltages at the Shoulder Joint Test Wire Test Method Normal VDC Note Colors Power to BROWN Back probe. Put red probe on blue wire +22 VDC UP If no reading, there’s no power to the...
  • Page 138 SportsArt - 8300 Repair Manual (Electronics) – Reference Voltages provided below are not exact specifications. They are meant for rough comparison only. Actual voltage readings will vary. Generator Voltage Observations Magnet Voltage Observations White and Black Wires Blue Wires Order...
  • Page 139 SportsArt - 8300 Repair Manual (Electronics) – Reference Drive Board LEDs - Illustration REF.05...
  • Page 140 SportsArt - 8300 Repair Manual (Electronics) – Reference LED Quick Reference Chart LED Marking Normal - Indication Abnormal or Not Activated Tip to Resolve Abnormal (Location) (Indication) Condition Flashing or lit – Optic sensor signal Not lit – No optic sensor signal at...
  • Page 141 SportsArt - 8300 Repair Manual (Electronics) – Reference LED Quick Reference Chart (Cont.) LED Marking Normal - Indication Abnormal or Not Activated Tip to Resolve Abnormal (Location) (Indication) Condition VR2-ERR Not lit – Normal stride motor VR Lit – VR2 value and display setting Recalibrate stride set.

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