SportsArt TR20F User manual

TR20F Repair Manual (Electronics)

Table of Contents

1-1-1. Product Picture - TR20F

1-2-1. Overlay - TR20F

1-3-1. Component Placement - TR20F Display Board

1-3-2. Component Placement - TR20F Lower Compartment

1-4-1. Display Block Diagram - TR20F

1-5-1. Cable Connections - TR20F Display Board

1-5-2. Cable Connections - TR20F Drive Board

1-6-1. LED Indicators - TR20F Display Board

1-6-2. Indicator LEDs - TR20F Drive Board

1-7-1. Electronic Specifications - TR20F

2-1-1. Electronic Malfunction Troubleshooting Table - TR20F

3-1-1. Troubleshooting – Safety Key Malfunction - TR20F

3-2-1. Troubleshooting – No Start Up - TR20F

3-2-2. Troubleshooting – No Start Up - TR20F

3-3-1. Troubleshooting –Key Malfunction – Soft Keys - TR20F

3-4-1. Troubleshooting –Key Malfunction – Soft Keys – TR20F

3-5-1. Troubleshooting – No Incline Operation - TR20F

3-6-1. Troubleshooting – Incline Position Malfunction - TR20F

3-7-1. Troubleshooting – HTR Malfunction - TR20F

3-8-1. Troubleshooting – Fuse Broke at Start -TR20F

3-8-2. Troubleshooting – Fuse Broke after Motor Moves -TR20F

3-8-3. Troubleshooting – Fuse Broke after Use - TR20F

3-9-1. Troubleshooting – ERR-1 Appears before Motor Moves - TR20F

3-9-2. Troubleshooting – ERR-1 Appears after Motor Moves - TR20F

3-10-1. Troubleshooting – ERR-3 - TR20F

3-11-2. Troubleshooting – ERR-7 - TR20F

3-12-1. Troubleshooting – ERR-10 - TR20F

3-13-1. Troubleshooting – ERR-14 - Motor Overheats - TR20F

3-13-2 Troubleshooting – ERR-14 - Fold Up Switch - TR20F

3-14-1. Other Topics – Basic Parameter Settings - TR20F

3-15-1. Other Topics – Error Code Chart - TR20F

Table of Contents

4-1-1. Inspection and Measurement – Optic Sensor - TR20F

4-2-1. Inspection and Measurement – Transformer - TR20F

4-3-1. Inspection and Measurement – Motor Brushes - TR20F

4-4-1. Inspection and Measurement – Motor Voltage Measurement - TR20F

4-5-1. Inspection and Measurement – Incline Voltage Measurement – TR20F

4-6-1. Inspection and Measurement – VR Voltage Measurement – TR20F

4-7-1. Inspection and Measurement – Incline Motor and VR Calibration - TR20F

4-8-1. Inspection and Measurement – Fold Up Switch Inspection - TR20F

1-1. Product Picture – TR20F

1-1-1

1-2. Overlay - TR20F

1-2-1

1-3. Component Placement -

TR20F Display Board

1-3-1

Display board

Telemetry heart rate receiver board

HTR board

Bridge board

Safety key board

1-3. Component Placement - TR20F Lower Compartment

1-3-2

Drive board

Motor

Transformer

DC incline motor

Incline VR set

Optic sensor

Fold up switch

1-4. Display Block Diagram - TR20F

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

Sensor L

Sensor R

Fold up switch

1-5. Cable Connections - TR20F Display Board

1-5-1

To telemetry heart rate receiver board

To HTR receiver board

To safety key board

To drive board

To keys on upper part of

display board

To keys on lower part of display board

1-5. Cable Connections - TR20F Drive Board

1-5-2

To transformer

To power supply AC1, AC2

To incline motor

To optic sensor

To VR set

To display board

To motor thermal sensor

and fold up switch

Fold up switch

1-6. LED Indicators - TR20F Display Board

1-6-1

LED1 power indicator

Lit indicates 5 VDC power

supply.

1-6. Indicator LEDs - TR20F Drive Board

1-6-2

LED 4 M-Temp

Lit indicates motor

temperature is 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

operating downward.

LED6 INC-UP

Lit indicates incline is

operating upward.

Transformer fuse

1-7. Electronic Specifications - TR20F

Specification

Details Notes

Exterior power supply

110V / 220V

Motor

DC motor (with internal thermal switch)

With brushes

With heat protection

Optic sensor Infrared optic sensor

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 LCD display

Windows

TIME / DISTANCE / CALORIE / PULSE

Workout programs

PROGRAM 1 – PROGRAM 5

INTV1 / INTV2

Heart rate control

program

HRC 65% / HRC 85%

Heart rate

HTR / telemetry

1-7-1

2-1. Electronic Malfunction Troubleshooting Table - TR20F

Malfunction Circumstance Inspection and test points Components to

replace

Notes

Safety key

malfunction

Put safety key in place.

Display has no reaction.

“Safety key” appears on the

display.

1. Inspect the cable connections on the lower part of the display

and safety key.

2. Inspect the safety key magnet.

3. Inspect the safety key board.

Safety key board

No start up Power on indicator does not

light.

1. Inspect the power cord connection.

2. Inspect all cable connections.

3. Inspect the fuse, the fuse holder, and the power switch.

4. Drive board components have an electrical short. Replace the

drive board.

1. Fuse, fuse

holder

2. Drive board

No start up Power on indicator lights but

the display does not light.

1. Inspect all cable connections, including connector 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 cable from the display to

the drive board.

b. If LED1 does light, inspect the display program IC. Re-install

the display IC.

1. Transformer

2. Drive board

3. Display board

program IC

Telemetry

heart rate

malfunction

Telemetry heart rate

malfunction

1. Inspect the heart rate transmitter strap and its batteries.

Replace batteries if they have not been replaced recently.

2. Inspect the receiver board cables.

3. Test or replace the receiver board.

4. Inspect for environmental interference, for example, from

speakers and lights.

1. Heart rate

transmitter

2. Heart rate

receiver board

Contact

heart rate

malfunction

Contact heart rate

malfunction

1. Inspect the HTR wire connections on the bridge board.

2. Inspect the HTR indicator light.

3. Replace the HTR board.

1. HTR board

(Heart touch rate

= contact heart

rate)

2-1-1

2-1. Electronic Malfunction Troubleshooting Table - TR20F

Incline

position is

not correct.

Incline position on display

differs from actual position.

1. Inspect all cable connections.

2. Inspect drive board incline VR voltage across red and green

wires. Normal: 0% = 1.20 VDC, 15% = 3.57 VDC. If not,

recalibrate the incline VR.

3. If VR voltage fluctuates greatly, the VR is bad. Replace the VR.

If the VR voltage is correct but the height is incorrect, replace

the display board.

1. VR

2. Display board

Key

malfunction

Key does not operate or

operates continually.

1. Inspect the soft key connection.

2. If the <program> or <change> key is bad, replace the upper

soft keys on the display.

3. If other keys malfunction, replace the lower soft keys on the

display.

1. Soft keys

(upper)

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 there is no voltage, replace the drive board. If there is voltage,

inspect the following:

a. transformer voltage.

b. whether the EMG indicator lights.

c. whether IGBTs have an electrical short. Replace the drive

board.

4. Inspect motor brushes or the commutator.

1. Drive board

2. Motor brushes,

motor

ERR 1 Motor operates, ERR 1

appears.

1. The program did not detect the optic sensor signal.

2. Inspect the CLK indicator on the drive board.

a. If the CLK indicator is not lit, clean or replace the optic sensor.

b. If the CLK indicator lights normally, inspect the data cable from

the display to the drive board. Re-install the display IC.

1. Optic sensor

2-1-2

2-1. Electronic Malfunction Troubleshooting Table - TR20F

ERR 3 Display speed differs from

actual speed.

1. Inspect KPH/MPH setting.

2. Inspect the optic wheel teeth.

3. Replace the optic sensor.

4. Replace the drive board.

1. Optic sensor 2.

Drive board

ERR 7 ERR7 appears at startup. 1. Inspect the incline VR cable connection.

2. Usually ERR7 indicates the display is stuck at either the highest

or lowest position.

3. Inspect whether LED5 and LED6 light on the drive board. If lit,

the display or cable malfunction may be causing a malfunction.

4. Inspect whether the drive board emits voltage to the incline

motor. If not, replace the drive board.

5. Recalibrate the incline set or replace the incline set as a test.

1.VR

2. Drive board

ERR14 Display shows ERR14. The

motor overheat protective

function operates.

1. Inspect the motor thermal switch wire and the fold up wire

connection.

2. Inspect the motor thermal switch wire. Feel the motor. Is it hot?

3. If the motor is hot and the unit has been in use, turn off the unit.

Let the unit rest one half hour or more. Then turn off the unit.

4. If ERR14 appears repetitively and the motor is hot, lubricate or

replace the walk belt.

5. If steps above do not solve the problem, replace the motor.

1. Drive board

ERR14 Display shows ERR14, the

fold up mechanism

malfunctions.

1. Inspect the thermal switch and fold up switch cables.

2. Inspect whether the fold up switch has operated

inappropriately. During normal operation, the fold up switch

cannot touch the unit frame.

2-1-3

2-1. Electronic Malfunction Troubleshooting Table - TR20F

Main fuse is

broken.

Turn on unit. The fuse

blows.

1. Inspect whether the power cord has an electrical short.

2. Drive board components have an electrical short. Replace the

drive board.

1. Drive board

Main fuse is

broken.

Press the speed up key. The

motor start up fuse blows.

1. Inspect the motor for abnormalities.

2. Replace the drive board.

3. Replace the motor.

1. Motor

2. Drive board

Main fuse is

broken.

In use, the main fuse blows.

1. Inspect whether the main power voltage is too low. Normal is

110V or 220V +- 10%.

2. Inspect whether the walk belt is too tight.

3. Inspect the walk belt for wear. Lubricate or replace it.

4. Inspect the condition of the fuse holder and fuse.

5. Replace the drive board.

6. Inspect motor brushes.

1. Walk belt

2. Drive belt

3. Drive board

Show total

distance

Do not put the safety key in place. Press and hold the

<CHANGE> key for three seconds. The program IC version,

metric/imperial unit selection, total distance, and total time

appear.

Telemetry

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 transmitter strap is fastened

securely.

3. Replace transmitter strap batteries or the transmitter strap

itself.

1. Heart rate

transmitter

2-1-4

Troubleshooting

Model: TR20F

Malfunction: Safety key malfunction

Circumstance: Put the safety key in place. The display shows no reaction.

“Safety key” appears.

Possible cause: Safety key board malfunction

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

Bridge board

Safety key board

Safety key

cable

Safety key reed switch test

Put safety

key magnet in

place

Reed switch: electrical

continuity

ON

Do not put the

safety key

magnet in

place

Reed switch: electrical

open

OFF

Troubleshooting

Model: TR20F

Malfunction: No start up. Unit does not operate.

Circumstance: Turn unit power on. The power indicator does not light.

Possible cause: Incoming power supply or component 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 components for signs of burning.

Or replace the drive board as a test.

3-2-1

Drive

board

Display

board

Filte

r

SW

FUSE

AC1

AC2

Drive board

Inspect the main fuse, fuse holder, and power switch.

Troubleshooting

Model: TR20F

Malfunction: No start up. Unit does not operate.

Circumstance: Turn unit power on. The power indicator does not light.

Possible cause: 1. AC power supply enters the drive board, goes through

the fuse, into the transformer, then into the drive board.

2.Cables are not connected properly, or the drive board

is malfunctioning.

Troubleshooting: 1. Inspect all cable connections.

2. Inspect whether LED2 on the drive board lights.

A. 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 connections from

the display to the drive board.

B. If it does light, inspect the display IC. Re-install the

display IC.

3-2-2

Drive

board

Display

board

Transformer

FUSE

AC1

AC2

LED2

LED1

濾波器

主程式 IC

LED1 power indicator

Lit indicates incoming 5V

power supply.

Transformer voltage

Transformer VAC

(red-red)

(blue-blue)

110V (red)

220V(blue)

black-black 12.5V

white-white 12.5V

orange-orange

29V

yellow-yellow 11.5V

Inspect the transformer fuse

LED2 VCC power

Program IC

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SportsArt TR20F User manual

SportsArt TR20F User manual

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