SportsArt Fitness T611 Repair Manual Download Page 44

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Inspection and Measurement

          Inspection point: Measuring VR voltage on the drive board
          Inspection method: 1. Select the VDC setting on the multi-meter. Place probes on the VR set red-green wires.

2. If the VR voltage fluctuates widely, the VR is bad. Replace it.

4-6-1

Incline key

Drive board VR voltage

Incline position

Red-green 1.20V

At red line (calibration point)

15%

Red-green 3.57V

Longest position

Incline VR connector at the drive board

Incline red calibration line

Summary of Contents for T611

Page 1: ...T611 Repair Manual Electronics...

Page 2: ...T611 3 3 1 Troubleshooting Key Malfunction Soft Keys T611 3 4 1 Troubleshooting Key Malfunction Soft Keys T611 3 5 1 Troubleshooting No Incline Operation T611 3 6 1 Troubleshooting Incline Position M...

Page 3: ...Inspection and Measurement Motor Brushes T611 4 4 1 Inspection and Measurement Motor Voltage Measurement T611 4 5 1 Inspection and Measurement Incline Voltage Measurement T611 4 6 1 Inspection and Mea...

Page 4: ...1 1 Product Picture T611 1 1 1...

Page 5: ...1 2 Overlay T611 1 2 1...

Page 6: ...1 3 Component Placement T611 Display Board 1 3 1 Display board Telemetry heart rate receiver board...

Page 7: ...1 3 Connections T611 Bridge Board 1 3 2 To Safety key board HTR board Soft key Bridge board...

Page 8: ...1 3 Component Placement T611 Lower Compartment 1 3 3 Drive board Motor Transformer DC incline motor Incline VR set Optic sensor Filter...

Page 9: ...11 1 4 1 Display board Drive board Motor Optic sensor Thermal sensor Incline motor Incline VR Transformer Filter HTR board Safety key Telemetry receiver board Key pad SW FUSE AC1 AC2 Bridge board Sens...

Page 10: ...1 5 Cable Connections T611 Display Board 1 5 1 To telemetry heart rate receiver board To bridge board HTR To bridge safety key board To drive board To bridge board soft key...

Page 11: ...1 5 Connections T611 Bridge Board 1 5 2 To Safetykey board To HTR board To Display...

Page 12: ...1 5 Cable Connections T611 Drive Board 1 5 3 To transformer To optic sensor To display board To motor thermal sensor To display board To power supply AC1 AC2 M M To motor To incline motor To VR set...

Page 13: ...1 6 LED Indicators T611 Display Board 1 6 1 LED1 power indicator Lit indicates 5 VDC power supply...

Page 14: ...s too hot LED 2 Lit indicates VCC power supply LED 7 MC indicator Flashing indicates an incoming optic sensor signal LED 3 EMG Lit indicates motor circuit error LED5 INC DN Lit indicates incline is op...

Page 15: ...ensor Speed range KPH 0 8 16 0 KPH MPH 0 5 10 0 MPH Incline Power DC motor 40V Incline range 0 15 VR calibration 0 1 20V 15 3 57V Display LED Dot matrix led Windows WT LOSS 65 HEART RATE CARDIO 80 Cal...

Page 16: ...nector cables 2 Inspect whether drive board LED2 lights a If LED2 lights inspect and test the transformer fuse 3 Inspect whether LED1 on the display lights a If LED1 does not light inspect the data ca...

Page 17: ...2 Soft keys lower ERR 1 Motor does not rotate ERR 1 appears 1 There is no power to the motor the motor cannot operate 2 Inspect the motor brushes 3 Measure voltage from the drive board to the motor If...

Page 18: ...belt and deck need to lubrication 4 Inspect the running belt and deck 5 if necessary replace the running belt 6 If steps above do not solve the problem replace the motor 1 Running belt Main fuse is br...

Page 19: ...elemetry heart rate malfunction No heart rate reading please check transmitter 1 This error statement appears when the display IC does not receive the HRC signal 2 Inspect whether the heart rate trans...

Page 20: ...lfunction Troubleshooting 1 Inspect the safety key magnet 2 Inspect bridge board connections 3 Test or replace the safety key board 3 1 1 Display Board Bridge board Safety key board Safety key board S...

Page 21: ...nent malfunction Troubleshooting 1 Inspect the power cable connection 2 Inspect cable connections under the motor cover 3 Inspect the main fuse fuse holder and power switch 4 Inspect the drive board c...

Page 22: ...If LED2 does not light inspect the transformer fuse and measure transformer input and output voltages 3 Inspect whether LED1 on the display board lights A If it does not light inspect cable connectio...

Page 23: ...2 Telemetry receiver board malfunction 3 Environmental interference possibly from lights or speakers Troubleshooting 1 Replace the transmitter strap or its batteries 2 Inspect the receiver board wire...

Page 24: ...s Display shows no reaction or keys operate continually Possible cause 1 Bridge board soft key connections are not connected properly 2 Soft keys are bad Troubleshooting 1 Inspect bridge board soft ke...

Page 25: ...DN indicators light when incline keys are pressed If LEDs do not light inspect cable connections and the display If LEDs light inspect whether the drive board emits voltage to the incline If yes the i...

Page 26: ...le connections 2 Measure VR wires to the drive board red green 0 1 20 VDC 15 3 57 VDC If not re calibrate the incline set 3 If the VR voltage fluctuates greatly the VR set is broken Replace the VR set...

Page 27: ...able connection malfunction Troubleshooting 1 Inspect the display cable connections 2 Inspect bridge board HTR cable connections 3 Inspect contact heart rate cable connections 4 Inspect HTR board LEDs...

Page 28: ...normal electrical short 2 Drive board component malfunction Troubleshooting 1 Inspect the power cord Is the cord insulation broken and creating an electrical short 2 Replace the drive board as a test...

Page 29: ...rotates Fuse blows Possible cause 1 Motor has an abnormal internal electrical short 2 Drive board malfunction Troubleshooting 1 Replace the drive board as a test 2 Replace the motor as a test 3 Replac...

Page 30: ...malfunction 2 Deck or belt wear 3 Drive board malfunction Troubleshooting 1 Inspect the fuse and fuse holder installation 2 Inspect the mechanics A Walk belt wear lubrication B Inspect walk belt tight...

Page 31: ...ons 2 Inspect the display board IC connection 3 Measure motor voltage from the drive board Is there voltage across M M If not replace the drive board If so A inspect transformer output voltage B inspe...

Page 32: ...ct whether CLK indicator on drive board flashes If not optic sensor is malfunctioning Suggestion A clean the optic sensor sensor head B replace the optic sensor 3 If the CLK indicator lights inspect A...

Page 33: ...ed differ Possible cause 1 Optic wheel teeth or optic sensor malfunction 2 Drive board malfunction Troubleshooting 1 Inspect whether optic wheel teeth are missing 2 Replace the optic sensor as a test...

Page 34: ...her the display or cable connections are at fault B If not lit inspect whether the drive board emits voltage to the incline motor If LEDs do not light replace the drive board If LEDs light recalibrate...

Page 35: ...ible cause 1 Drive board IGBT has an electrical short The protective circuit fails 2 The protective circuit fails prompting the error code This cause is unlikely Malfunction 1 Replace the drive board...

Page 36: ...tch cable connections These two cables are connected 2 Inspect the motor cover Is it hot 3 If it is hot and the unit has been in use for a long period of time the motor overheat protective function is...

Page 37: ...our choice 3 USER ID ON OFF setting Display shows USER ID ON or USER ID OFF Press the INCLINE or key to setting USER ID ON OFF Press the ENTER key to confirm your choice 3 Distance Display shows total...

Page 38: ...program has not received the optic sensor signal E 3 Display setting and actual speed differ E 7 The display detected that the incline VR voltage is too high or too low indicating that the incline is...

Page 39: ...belt to allow the optic wheel to move Inspect whether LED7 on the drive board flashes When a tooth of the optic wheel is in the center of the optic sensor LED7 on the drive board does not light When a...

Page 40: ...ansformer voltage 3 Set the multi meter to the AC setting Place probes as follows 4 2 1 Transformer fuse Transformer connector Transformer cables Voltage red red or blue blue input voltage 110V red 22...

Page 41: ...e smooth If there are grooves the commutator might be faulty C Inspect whether brush copper wires have changed color If so replace the brushes 4 3 1 Brush ends shown here have scratches a sign of irre...

Page 42: ...ethod 1 Select the VDC setting on the multi meter Place probes on M M connectors on the drive board 2 Press the SPEED key The motor should operate allowing you to measure motor voltage Speed Drive boa...

Page 43: ...ne motor The incline motor does not operate 2 Select the VDC setting on the multi meter and test as follows 4 5 1 Incline key Indicator on drive board Drive board incline voltage Incline operation INC...

Page 44: ...he multi meter Place probes on the VR set red green wires 2 If the VR voltage fluctuates widely the VR is bad Replace it 4 6 1 Incline key Drive board VR voltage Incline position 0 Red green 1 20V At...

Page 45: ...tube return to the red calibration line Step 2 Adjust the VR voltage across red and green wires to 1 20V A Rotate the VR to set voltage across red and green wires to 1 20V B Use screws to secure the...

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