t670 treadmill electronics repair manual - sportsart

T670 Treadmill Repair Manual

SPORTS ART INDUSTRIAL CO., LTD.

【Table of Contents】

1. Main Component Placement

1-01. T680 Treadmill Complete 1-02. Display Area 1-03. Hood Area 1-04. Display Area Keys 1-05. Display Inside 1-06. Drive Board 1-07. AC Servo Motor 1-08. Other (1): LCD, Keys, Fan Board, Telemetry Board 1-09. Other (2): HTR Board, Key Board, AV Board, EMI Filter

2. Introduction 2-01. Specifications 2-02. Display Features 2-03. TFT Screen 2-04. Display Indicators 2-05. Display Area Keys 2-06. Display Circuit Boards

3. Operation 3-01-01.Operation

4. Cable Connections 4-01-01. Display Board Cable Connections 4-01-02. Display Area Board Cable Connections 4-02-01. Drive Board Cable Connections 4-02-02. Drive Board Cable Connection Block Diagram 4-03-01. AC Incline Operation - Time 4-03-02 AC Incline Operation - Voltage

4-04-01. Fan Operation

5. Error Messages 5-01. Error Code Overview 5-02. E-1-1 – Encoder Error 5-03. E-1-2 – Motor Overheat Error 5-04. E-1-3 – Motor Speed Error 5-05. E-2-1 – IGBT Excessive Current Error 5-06. E-2-2 – IGBT Excessive Heat Error 5-07. E-3-1 – Incline Calibration Error 5-08. E-4-2 , E-4-3 Low/High Voltage Errors 5-09. E-8-1 – No Display-Drive Board Communication at Start 5-10. E-8-2 – No Display-Drive Board Communication During

Operation

6. Troubleshooting 6-01. Motor Does Not Operate 6-02. Display Key Malfunction 6-03. Unit Will Not Start Up 6-04. Incline Motor Does Not Operate 6-05. The Fuse Blew 6-06. Telemetry Heart Rate 6-07. HTR Heart Rate Malfunction 6-08. Safety Key Does Not Operate 6-09. Fan Malfunction

7. Testing

7-01. EMI Filter 7-02. Motor 7-03. Inductor 7-04. Incline Motor Voltage 7-05. Incline Calibration Switch 7-06. Safety Key Switch 7-07. Telemetry Reception 7-08. Heart Touch Rate (HTR) Board 7-09. HTR Handlebar

7-10. Motor Thermal Sensor 7-11. Fan Board Voltage 7-12. Power Supply at the Drive Board 7-13. Display Board Voltage

【Table of Contents】

8. Mechanical Adjustments and Part Replacement 8-1. T680T670 Treadmill Walk Belt Tightness Adjustment 8-2. T680T670 Treadmill Walk Belt Alignment 8-3.T670 AC Motor Incline Calibration Procedure - Software 8-4.T670/T680 AC Motor Incline Calibration Procedure - Hardware

1. Product Picture

1-01-01

2. Component Placement－Display Area

Display

Keys

Fan

1-01-02

3. Components－Motor Area

Incline Set EMI Filter

Incline 0% Switch Inductor

AC SERVO Motor Drive Board

1-01-03

4. Components－Display Area

Feedback Screen

WORKOUT GOAL & QUICKSTART Keys

Setting Screen and Keys

PROGRAM Keys

Heart Rate Window

1-01-04

5. Components – Display Area – Display Back

1-01-05

5. Components – Display Area－Display Board

1-01-06

6. Components – Drive Board

1-01-07

7. Components – AC Servo Motor

Encoder

1-01-08

8. Components － Other（1）

Part HTR Board Part Key Pad

Part Encoder Part Telemetry Receiver Board

1-01-09

1.Product Specifications

Specification Explanation Notes

Illustration Screen Feedback Screen

Percentage Screen

5*8 two-color LED dot matrix 4 sets, Workout Program Illustration 14-segment display, 16 sets（0.8”, green）, Shows scrolling character strings and exercise feedback values 26 x 2-color LED rectangular display shows percentages

Setting Value Screen

1. TIME 2. DISTANCE 3. SPEED 4. CALORIES

Speed 0.1-12.0 MPH (American Standard) 0.2-20.0 KPH (Metric)

Incline 0-15﹪ 0.5% increments

Workout Programs TRACK、RANDOM、GLUTE、INTERVAL（1：1，1：2，2：2）、 5K（FLAT，HILL）、10K（FLAT，HILL）、WT LOSS、CARDIO、CUSTOM HR、

FIT TEST（BRUCE，GERKIN）

Safety Function SAFETY KEY Heart Rate Telemetry Heart Rate, HTR Heart Rate Fan Control Low-, medium-, high-speed, stop

Feedback

TIME ： 0：00-99：59 DISTANCE ： 0.01-9999 Km/Mile CALORIES ： 0.0-9999 K˙CAL (1000 calories) CAL/Hr ： 0.0-999.9 K˙CAL (1000 calories) MET ： 0.0-99.0 HEART RATE ： 40-250

2-01-01

2. Unit Specifications－Display

Screen

Workout Program Keys

Value Screen and Setting Keys

Goal Setting

Keys and Fan

Heart Rate Screen

2-01-02

3. Introductions－ Display Board (Heart Rate Indicator)

Workout Programs

Lit indicates active program: TRACK, RANDOM, GLUTE, INTERVAL, 5K, 10K, WT LOSS, CARDIO, CUSTOM HR, FIT

TEST.

Setting Values Lit indicates time, distance, speed

calorie values.

WORKOUT GOAL and Quick Start Indicator Lit indicates the program is active.

Display Lock/Unlock Key and Indicator

Lit indicates the active row and scan/lock mode.

Heart Rate Indicator

2-01-03

4. Introduction－ Display Board (Keys)

<Display Lock/Unlock> Press to toggle between

rows. Also press to activate scan/lock feature.

<TIME> <DISTANCE><CALORIES><QUICK START> Keys

WORKOUT GOAL selection keys and Quick Start key

＜ENTER＞＜＞＜

＞＜0~9＞＜CLEAR＞

Keys Confirm, up/down, numbers, clear keys

< TRACK > < RANDOM > < GLUTE > < INTERVAL > < 5K > <10K > <WT LOSS ><CARDIO> <CUSTOM HR><FIT TEST> Keys

Program selection keys

<INCLINE><SPEED> ＜STOP＞＜FAN＞Keys

Incline, speed, stop, fan control keys.

2-01-04

5. Introduction－ Display Board (Back)

2-01-05

T670 Operation

1. Start Functions: Functions: Press the Quick Start to start operation. Operation: (1) “SPORTSART – T670” appears on the start up screen.

After two seconds, “SELECT PROGRAM OR QUICKSTART” scrolls across the screen. Press the QUICK START key or press the PROGRAM key to enter user information.

(2) PROGRAM indicator flashes. Press a program key. The related indicator lights. And the program name appears in the message window for two seconds. For instance, if you press the <RANDOM> key, RANDOM LED lights, and “RANDOM” appears.

(3)WORKOUT GOAL indicator flashes. Separately press TIME, DISTANCE or CALORIES keys to set workout goals and range. “ ENTER TIME“、”ENTER DIST”、”ENTER CALORIES” appears respectively. Press the <>/<> or numerical keys to set exercise goals. Then press the <ENTER> key to confirm your choice.

(4) Set user age and weight. When “ENTER AGE” appears, enter the age value, then press the <ENTER> key to confirm your choice. When “ENTER WEIGHT-KG””LB“ appears, enter the weight value, then press the <ENTER> key to confirm your weight.

(5) After establishing your settings, you can begin your workout.

3-01-01

2.SPEED Key：

Function: Set speed function Operation: (1) Press the SPEED <> key. Values in the speed window increase. Speed increases.

(2) Press the SPEED <> key. Values in the speed window decrease. Speed decreases (3) SPEED range: 0.2~24 KPH (0.1~15 MPH).

3.INCLINE Key Function

Function: Set treadmill incline position. Operation: (1) Press the INCLINE<> key. Values in the incline window increase.Incline operates up.

(2) Press the INCLINE<> key. Values in the incline window decrease. Incline operates down. (3) INCLINE range: 0~15％; increments of 0﹒5％.

4.FAN Key Function

Function: Operate the fan Operation: (1) Press the <FAN> key. Fan operation toggles as follows: Low -> middle -> high -> off.

(2) Display shows “FAN LOW,” “FAN MID,” “FAN HIGH,” “FAN STOP.” (3) When no one is exercising on the unit, press the <FAN> key for three seconds to turn off the

display.

5.STOP Key Function Function: Leave an exercise program. Operation: (1) In QUICKSTART mode, press the＜STOP＞ key to leave the exercise program.

(2) If in the START mode, having entered user information, press the＜STOP＞ key to stop exercising. Feedback pauses as is.

(3) In any mode, hold the＜STOP＞ key three seconds to leave the present mode and return to start up screen.

3-01-02

6.Display Lock/Unlock Key：

Function: Toggle between two rows of exercise feedback information Operation: (1) Press the <Display Lock/Unlock> key during exercise to toggle between exercise feedback views.

Corresponding indicators light. Top row: CALORIES、SPEED、TIME、DISTANCE. Bottom row: CAL/HR、METS、PACE、INCLINE.

(2) In scan mode (the SCAN indicator lights); the display view toggles between the two rows of feedback every six seconds. In scan mode, press the <Display Lock/Unlock> key again to cancel scan mode (the SCAN indicator extinguishes) and keep viewing the present row of feedback. Press the <Display Lock/Unlock> key again to return to scan mode.

7.CLEAR Key

Function: Clear entered values to 0. Operation: Press to clear entered values to 0.

8.PROGRAM Key：

Function: Select exercise programs. Operation: (1) Press any PROGRAM key. Its corresponding LED lights.

(2) Programs include TRACK、RANDOM、GLUTE、INTERVAL、5K、10K、WT LOSS 、CARDIO、CUSTOM HR、FIT TEST

3-01-03

9. Basic Settings

Function: (1) Determine KPH/MPH mode, see total distance, total time, display and drive board program versions.

Operation: (1) Press the <ENTER> key for three seconds to enter basic setting mode. Present distance unit mode appears as either “UNIT - MPH” or “UNIT - KPH”. Press＜/＞ keys to toggle between the two settings. Press the＜ENTER＞key to confirm your choice and proceed to the next setting, or press the <STOP> key to exit basic setting mode. (2) After pressing the <ENTER> key, total distance appears as either “DIST – XXX MILE”or “DIST – XXXX KM”. Press the＜/＞ keys to toggle between the two settings. Then press the ＜ENTER＞ key to confirm your setting or press the <STOP> key to exit basic setting mode.

(3) After pressing the <ENTER> key, total time of operation appears as “TIME – XXXXXX HOUR”. Press the ＜ENTER＞ key to proceed to see the next setting. (4) After the <ENTER> key is pressed, the display program IC version appears as “CTL – BT670-1A”. (5) After the <ENTER> key is pressed, the drive board program IC appears as “DRV – SERVO-1A”. (6) Press the <ENTER> key to return to the startup scrfeen or press the <STOP> key to exit basic settings.

3-01-04

1. Cable Connections－Display Board Connections

CON3: To Cardio Board

J2: To drive board

CON1: To soft keys

J11: To soft keys

JP2: To key board

J6: To contact HR board

J7: To telemetry receiver board

CON1: To fan board

4-01-01

2.Display Cable Connection Block Diagram

Display Board

HTRBoard

Telemetry HR Reciever

HTR Contacts (L/R)

Drive Board

Soft Keys

Fan CON1

J2

J7

J6J1(CON3)

J11

J10

Key Board

Cardio Board

JP2

4-01-02

1. Drive Board Cable Connection Block Diagram

CON8 To incline calibration switch

CON7 To display board

CON2 To motor

CON3 To power supply

CON6 To motor encoder

CON1 To motor thermal switch

CON5 To incline motor

CON4 To inductor

CON9 To display board

4-02-01

2. Drive Board Cable Connection Block Diagram

Display Board

Drive Board

Calibration Switch

Incline Motor Set

Motor

Encoder

Inductor (220V)

FUSE

EMI Filter

On/off switch

Thermal Fuse

Power Cord

CON3

CON5

CON7

CON4

CON8CON6

CON2

CON1

CON9

4-02-02

T670 Cable Connections－AC Incline Operation - Time

1. Turn on the unit. Incline recalibrates to 0﹪. 15%

14% 13% 12% 11% 10% 9% 8%

7%6%5%4%

3% 2% 1% 0%

Model Every 0.5% Incline Time (0%-15%) Decline Time (15%-0%)

T680 t＝1s 30s 30s

T670 t＝1s 30s 30s T650 t＝0.9s 27s 27s

Up Travel Time

Down Travel Time

4-03-01

T670 Cable Connections － AC Incline Operation － Voltage

15% 14% 13% 12% 11% 10%

9%8%7%6%5%4%

3% 2% 1% 0%

DISPLAY DRV LED Output Voltage Incline Operation

UP LED 3→ON(UP) Black - White 110v/(220v) Up

DOWN LED 2→ON(DOWN) Red - White 110v/(220v) Down

Black – Up

Red – Down

White - N

Down Travel Time

Up Travel Time

4-03-02

T670 Fan Operation Block Diagram

DISPLAY Fan Board Power Output

Fan Output

FAN-HIGH DC 12V High FAN-MID DC 9V Medium FAN-LOW DC 6V Low

4-04-01

T670 Error Messages－Error Code Overview

1. Display Format: ERROR_X_Y_

X and Y above are placeholders. In their place are digits. The X placeholder represents the following category of abnormalities.

Digit Represents 1 Servo motor abnormality 2 IGBT abnormality 3 Incline motor abnormality 4 Power supply abnormality 8 Signal abnormality

2. Complete codes follow: ERROR_1_1_：Servo motor encoder malfunction. Re-start machine. ERROR_1_2_：Servo motor has overheated. Unit operates at half speed. ERROR_1_3_：Servo motor sped up without command. Re-start machine. ERROR_2_1_：IGBT excessive current. Re-start machine. ERROR_2_2_：IGBT excessive heat. Unit operates at half speed. ERROR_3_1_：Incline motor recalibration error. ERROR_4_1_：Power switch is off. ERROR_4_2_：Power supply voltage is too low. Re-start unit after power supply is stabilized. ERROR_4_3_：Power supply voltage is too high. Re-start unit after power supply is stabilized. ERROR_8_1_：Signal error upon start up. ERROR_8_2_：Signal error after start up.

5-01-01

T670 Error Message － E-1-1 － Motor Encoder Error

1. Circumstance of Malfunction: Display shows E-1-1; unit does not operate. 2. Block diagram

Display Board

Drive Board

Inductor (220V only)

Servo Motor

Encoder

5-02-01

3. Operation Order Part Explanation

1 Drive Boardn on u

nfla

2. After coto the disp

1. Tur nit power. Drive board detects encoder signal. mir ing the signal is OK, the drive board transmits the signal

y. 2 Dat able dea C The enco r signal is transmitted through the data cable.

3 Displ Boa

tecommunica2. If the driv

lay rd on the disp

1. After de cting the drive board signal, the display maintains tion with the drive board. e board does not detect the encoder signal, E1-1 appears ay.

4 deEncoder Encoder tects motor speed and direction.

4. Analysis The reason E1-1 would appear is that the drive board does not detect the encoder signal.

5. Troubleshooting

A. Turn unit off and on. B. Inspect whether the encoder wire is connected to the drive board. C. Replace the servo motor.

D. Replace the drive board.

5-02-02

T670 Error Message－E-1-2－Motor Excessive Heat Error

1. Circumstance of Malfunction: Display shows E-1-2, the overheated motor error message. Unit operates at half speed.

2. Block Diagram

Display Board

Drive Board


Servo Motor

Thermal Sensor

5-03-01

3. Operation t Order ExplanationPar

1 Drive Board boardl to the disp

Drive detects the thermal sensor signal and transmits that signal ay.

2 Dat Cable aa The therm l sensor signal travels via the data cable.

3 Disp Boplv2

lay ard 2. If the drishows E1-

1. The dis ay detects the thermal sensor signal from the drive board. e board doesn’t detect a thermal sensor signal, the display .

4 Therm Se

2. The therthe sensor

al nsor sensor bec

mal sensor detects motor temperature. In normal operation, completes the circuit. When the temperature rises, the omes an electrical open.

4. Analysis

The most common cause of E1-2 is that the drive board does not receive the thermal switch signal. E1-2 appears and the motor operates at half speed.

5. Troubleshooting A. is the thermal sensor wire connected properly?

B. Is the servo motor amp draw too high? C. Replace the drive board as a test. D. Is the walk belt worn or too tight? E. Has the machine been used for a long, long time without rest? If so, shut off the unit 30 minutes to cool.

5-03-02

T670 Error Message － E-1-3 －Motor Speed Error

1. Circumstance of Malfunction: Display shows E-1-3, the motor speed error message. 2. Block Diagram

Display Board

Drive Board

Inductor(220V only)

Servo Motor

Encoder

5-04-01


1 Drive Board T ive ba display bo

he dr oard detects the encoder signal and transmits it to the rd.

2 Dat able dea C The enco r signal travels via the data cable.

3 Displ Boa

pl2. If the driv

ay rd appears on

1. The dis ay board detects the encoder signal from the drive board. e board does not receive the over speed error signal, E1-3 the display.

4 deEncoder Encoder tects motor speed and direction.

4. Analysis The most common reason for E1-3 is that the drive board does not receive the encoder signal.

5. Troubleshooting

A. Re-start the unit. B. Inspect whether the encoder wire is attached properly. C. Replace the drive board as a test. D. Replace the servo motor.

5-04-02

T670 Error Message－E-2-1 －IGBT Excessive Current Error

1. Circumstance of Malfunction: Display shows E-2-1, the IGBT excessive current error message. 2. Block Diagram

Display Board

Drive Board

Inductor(220V only)

Servo MotorIGBT

5-05-01


1 Drive BoardT ive b

he signal to the dr oard detects the IGBT over current signal and transmits the

display board.

2 Displ Boa1. The displ

vay rd 2. If the drishows E 2-

ay board receives the drive board IGBT over current signal.e board detects the IGBT over current signal, the display

1.

3 I T

The display

GB

provides the speed signal to the motor.

4 Serv Moto ro r The motor uns according to the power supplied by the IGBT.

4. Analysis The primary reason for E2-1 is that the drive board detects IGBT over current signal.

5. Troubleshooting

A. Re-start the unit. B. Inspect whether the servo motor wires are connected properly to the motor. C. Replace the drive board.

D. Inspect the servo motor windings for a break. E. Replace the servo motor.

5-05-02

T670 Error Message － E-2-2－IGBT Excessive Heat Error

1. Circumstance of Malfunction: Display shows E-2-2, the IGBT error code. The unit operates at half speed.

2. Block Diagram

Display Board

Drive Board

Servo MotorIGBT

5-06-01

3. Operation Order ExplanationPart

1 Drive Board rive bh signal to t

The d oard detects the IGBT over heat signal and transmits that e display board.

2 Displ Bo1. The displ

vay ard 2. If the drishows E 2-

ay receives the IGBT over heat signal from the drive board.e board detects the IGBT over heat signal, the display

2. 3 splayIGBT The di board provides the speed signal to the motor.

4 Ser Moto otor vo r IGBT. The m operates fast or slow according to the power supplied by the

4. Analysis

The primary cause for E2-2 is that the drive board detects the IGBT over heat signal. The motor then runs at half speed.

5. Troubleshooting A. Inspect whether the drive board servo motor wires are connected properly. B. Replace the drive board.

C. Inspect the servo motor windings for a break. D. Replace the servo motor.

5-06-02

T670 Error Message － E-3-1 －Incline Calibration Error

1. Circumstance of Malfunction: Display shows E-3-1, the incline calibration error. 2. Block Diagram

D isp la y B o a rd

D rive B o a rd

C a lib ra tio n S w itchA C In c lin e M o to r

5-07-01


1 Drive oardT ive b

B the displayhe dr oard detects the calibration switch signal and transmits it to

board.

2 Displ Boa

1. The displboard.

appears on

ay rd 2. If the driv

ay receives the calibration switch signal from the drive

e board does not detect the calibration signal, E 3-1 the display.

3 Calibration The calibrat

Switch

ion switch operates when the unit arrives at the 0% position.

4 AC Inc e M The drive blin otor board signaloard controls the AC incline motor according to the display .

4. Analysis

The primary reason that E3-1 appears is that the drive board does not detect the calibration signal.

5. Circumstance of Malfunction A. Inspect whether the calibration switch wire is connected properly to the drive board.

B. Inspect whether the calibration switch operates normally. C. Replace the drive board as a test.

5-07-02

T670 Error Message － E-4-2/ E-4-3 － Low/High Voltage Errors

1. Circumstance of Malfunction:(1) Display shows E-4-2, the low voltage error message. Re-start the unit after voltage stabilizes.

(2)Display shows E-4-3, the high voltage error message. Re-start the unit after voltage stabilizes.

2. Block Diagram

Display Board

Drive Board


FUS

E

EMI Filter

On/Off Switch

Power Cord

5-08-01

3. Operation Order ExplanationPart

1 Drive Boardrive b

h signal to tThe d oard detects the power supply voltage and transmits a

e display board.

2 Displ Bo1.The displ

vl

ay ard 2. If the drion the disp

ay receives the error message from the drive board. e board detects an error message, E 4-2 or E 4-3 appears ay.

4. Analysis

The primary reason for the appearance of E 4-2 or E 4-3 is abnormal power supply. Please re-start unit after power stabilizes.

5. Troubleshooting

A. Inspect exterior power supply. B. Replace the drive board as a test.

5-08-02

T670 Error Message － E-8-1 －Communication Error at Start

1. Circumstance of Malfunction: Turn on unit power. Display shows E-8-1. Unit does not operate. 2. Block Diagram

Display Board

Drive Board

Fuse

EM I F ilter

O n/O ff Sw itch

Power Supply

CO N3

CON7

CO N4

CO N9

5-09-01


1 Drive Board

n on 2. After insp

o confirmati

1. Tur unit power. Drive board detects various circuit functions. ecting for normal startup, the drive board sends

n signal to the display board and starts communication.

2 Dat Cable ba The drive oard signal travels through the data cable to the display.

3 Disp Boe ds

lay ard signals an2. If there i

1. After th display CPU starts up, the display receives drive board begins communication no communication, E8-1 appears.

4. Analysis

The reason for the appearance of E8-1 is no communication between the display and drive boards.

5. Troubleshooting A. Inspect whether the display IC is inserted properly. B. Inspect whether the data cables are connected properly.

C. Replace the drive board as a test.

5-09-02

T670 Error Message－E-8-2 －Communication Error During Operation

1. Circumstance of Malfunction: During operation, E-8-2 appears. Unit stops operating. 2. Block Diagram

Display Board

Drive Board

Fuse

EMI Filter

On/Off Switch

Power Cord

5-10-1


1 Display 2. During operation, the display CPU detects whether the display and drivcommunication is normal.

Board 3. The display shows E-8-2 if communication is ab

1. The display CPU sends signals to the drive board according to user settings. e board

normal.

2 Data Cable

Display and drive board signals travel the data cable.

3 Drive Board

After receiving signals from the display, the drive board CPU controls the moincline operation.

tor and

4. Analysis

E 8-2 appears during operation if communication between the display and drive board.

5. Troubleshooting A. Inspect whether the display IC is inserted properly. B. Inspect data cable connections.

C. Replace the drive board as a test.

5-10-2

T670 Troubleshooting:Motor Does Not Operate

1. Definition: Motor does not operate. Drive board does not read encoder signal.

2. Block Diagram

Display Board

Drive Board

Servo Motor

Inductor (220V only) Encoder

CON 7

CON 2

CON 6CON 4

6-01-01

3. Operation

Order Part Troubleshooting

1 Display Boa1 s the

ad

rd 2. The displmotor spee

. Pres SPEED key. The display shows the speed value. y CPU sends the motor signal to the drive board to control .

2 Inductor (221. The induc

0V) 2. The indutransmits it t

tor is only used on 220V products. ctor stabilized drive board AC voltage to VH voltage and o the motor circuit on the drive board.

3 CON able 7 C The display board signal travels this cable to the drive board.

4 Drive oard sr,B After proce sing the motor speed signal, the drive board emits voltage

making the motor rotate. to the moto

5 Servo otor The motor owM makes the perates according to the voltage it receives. Motor rotation alk belt move.

6 deEncoder The enco r translates motor direction and speed into signals.

4. Circumstance of Malfunction

Press the SPEED<>or<>key. The walk belt does not rotate.

5. Circumstance of Malfunction （1）The drive board does not emit voltage to the motor, so the motor does not operate. （2） Motor malfunction prevents its operation. （3） The encoder cable is not inserted properly or is defective.

( 4） When motor operates in reverse for up to 0.3 seconds, and speed exceeds 0.4 KPH.

6-01-02

6. Troubleshooting


1 Displ Boa 1 s doay rd 2. Inspect c. Pres wn to insert the display IC.

able connections at the display and drive board.

2 Data abl1. Inspect th

we t

C e 2. Inspect 3. Replac

e data cable connections at the display and drive boards.hether the data cable is pinched or crimped or cut. he data cable as a test.

3 Induct (22 or 0V) Re-connect the inductor wire connections.

4 En der ce tco 1. Re-insert CON 6.

2. Repla he encoder as a test.

5 Drive oard1. Inspect al

tB 2. Replacel wire connections on the drive board and inductor (220) he drive board as a test.

6 Motor

t the t

2. Inspec3. Replac

e CON 2 connection on the drive board. he motor as a test.

6-01-03

T670 Troubleshooting: Display Key Malfunction

1. Circumstance of Malfunction: （1） Turn on unit. Keys activate without being pressed.

（2） Press a key. There is no reaction.

2. Block Diagram

Display BoardKey

BoardKeys

J25(CON 8)

J7(CON 13)JP6(CON 7)

6-02-01

3. Operation Order Part Operation

1 Key witch

mal sopen. There

l soperates.

S

1. Nor ituation: Do not press any key. Key circuit is an electrical is no key operation.

2. Norma ituation: Press a key. Key circuit is an electrical short. Key

2 key Cable 1. The signal is travels the cable.

3 Displ Boa lay Clay rd 2. The disp

1. Disp PU reads the key signal. ay operates according to the signal.

4. Analysis

（1） Key malfunction: key shorts out, operating as if it had been pressed. （2） key malfunction: press the key. There is no reaction. （3） Display key circuit malfunction. The key does not operate.

5.Troubleshooting


1 Key witch 1 ect ky S . Insp ey cable connections.

2. Test ke operation. 2 t kKey Cable 1. Inspec ey cable connections to the display. 3 Display Boa wrd If the key s itch is normal, replace the display.

6-02-02

T670 Key Types

6-02-03

T670 Troubleshooting: Unit Will Not Start Up

1. Circumstance of Malfunction: Turn on unit. Display does not beep or light up. 2. Block Diagram

Display Board

Drive Board


Fuse

EMI Filter

On/Off Switch

Power Cord

CON3

CON7

CON4

CON9

On/Off Switch

6-03-01

3. Operation

Order Operation Part 1 P ord oow Cer Provides p wer. 2 eEMI Filter Filters pow r.

3 Fuse and F pruse Holder

The fuse otects the unit. If current is too high, the fuse blows.

4 Power Switch 1. When sw2. hen sw

itched to “0”, the drive board has no power. W itched to “1”, the drive board has power.

5 Driv Board be The drive oard processes power and transmits it to the display board.

6 CON CO7 & N9 Power fromCables

the drive board travels via these cables to the display board.

7 Displ Boaispl

eay rd 2. When th1. The d ay board stabilizes VBB, making it VCC voltage.

display has VCC voltage, it lights up.

4. Analysis （1）There is no power to the drive board, so the unit does not start up. （2）A component on the drive board had an electrical short. The fuse has blown and the unit will not start up. （3）The display has not received VBB voltage, so it cannot start up. （4）The display IC is bad, so the unit will not start up.

6-03-02

5. Troubleshooting

erOrd t TroubleshoPar oting

1 P Cor ho r we d Inspect w ether the power cord is connected well. 2 EMI Filter MInspect E I filter wire connections.

3 Fuse and FHolder

ct t

ect use 2. Inspect t

3. Insp

1. Inspe he fuse holder wire connections. he fuse holder spring. whether the fuse is burnt.

3 On/ Sw

1. Push oshould.

s3. Replace

Off itch 2. If it doe

n/off switch to “1”. Inspect whether the switch lights up. It

not light up, inspect the power cord and EMI filter. the on/off switch as a test.

4 AC Cable O Inspect C N3 cable connections. 5 Dri Boar eve d Inspect th drive board CON7, CON9 connections.

6 Da Cable t tt ta 2. Inspec

1. Inspec he data cable between the display board and drive board. whether the cable has been pinched, crimped, or broken.

6-03-03

T670 Troubleshooting:Incline Motor Does Not Operate

1. Circumstance of Malfunction: Press the incline key. Values change in the incline window. But incline does not operate.

2. Block Diagram

Display Board

Drive Board

Incline Up/Down Signal

Incline Motor

Calibration Sensor

AC Incline Motor Voltage

Calibration Signal

6-04-01

3.Incline Operation

15% 14% 13% 12% 11% 10%

9%8%7%6%5%4%

3% 2% 1% 0%

DISPLAY DRV LED Output Voltage Incline Operation

UP LED 3→ON(UP) Black-White 110v/(220v) Up

DOWN LED 2→ON(DOWN) Red-White 110v/(220v) Down

6-04-02

4. Operation

Order Part Explanation

1 Displ Boa1 ss IN

.l

ay rd accordingly2. The disp

. Pre CL<> or INCL<> key. Incline window values chance ay CPU sends the incline up/down signal to the drive board.

2 Dat able lina C 1. The inc e up/down signal travels the drive board.

3 Drive Board

incline. Inccalibration s2.When the

ofor incline uincline dowdown opera

signal, the drive b

1. Turn on unit power. The drive board automatically calibrates the line goes to the lowest position and hits the incline witch. drive board IC receives the display incline command

ard incline up LED3 lights and the drive board emits power p operation (across BLACK-WHITE wires); the drive vboard n LED2 lights and the drive board emits power for incline tion (across RED-WHITE wires).

4 Incli Moto

1. When thoperates up

hoperates do

ne r 2. When t

e drive board INC_UP indicator lights, the incline motor . e drive board INC_DN indicator lights, the incline motor wn.

5. Analysis

（1）Display does not emit the incline up or down signal to the drive board. （2）The incline wire has an electrical open or short. （3）Drive board components are broken. The drive board is unable to emit power to the incline. （4）Incline motor has an electrical open. Incline cannot operate.

6-04-03

6. Troubleshooting

erOrd rt TroubleshPa ooting

1 I Mo tnc e lin tor 1. Inspec whether the incline motor has an electrical open.

2 D Boa

t2. Inspect

power t

rive rd 3. When

1. Inspec the drive board wire connections. the drive board F1 3A incline fuse? Replace it if necessary.

the incline up or down LED lights, does the drive board put out o the incline motor.

3 D C1. Inspect

ctc

ata able 2. Inspe3. Repla

data cable connections. whether the data cable is crimped or broken. e the cable as a test.

4 Dis y B 1. Press tipla oard does the he INCL<>/<> key. After the incline window values change, ncline up or down indicator on the drive board light?

6-04-04

T670 Troubleshooting:The Fuse Burnt

1. Circumstance of Malfunction: （1）Main fuse blows. Turn on unit power, display does not light up. （2）Replace the unit fuse. Turn on power. Fuse blows.

2. Block Diagram

Display Board

Drive Board

On/Off Switch EMI Filter

Fuse

L

N

Power Cord

CON3

CON9

6-05-01

3. Operation

r Orde ExplanationPart

1 il poE FMI ter Provides wer.

2 Fuse and Fuse de

dHol r

When thebreaks.

rive board or other components have malfunction, the fuse

3 On/O Swff itch When the switch is set at “1”, power enters the treadmill.

4 Drive Board ere When the

When ther is no malfunction, the display lights up normally. is a malfunction, the drive board has an electrical short.

4. Analysis

（1）Motor current is too high. Fuse blows. （2）Wire connections are not attached properly, causing excessive current, making the drive board have an electrical open. （3）The drive board component malfunctions, causing the fuse to blow.

6-05-02

5. Troubleshooting

Order art ExplanatiP on

1 Filter ecE I M 1. Insp t EMI filter wire connections.

2 Fus andold

e Fuse er

1. Inspec2. InspecH

t whether the fuse and fuse specifications match. t the fuse wire connections.

3 f SOn/Of witch 1. Inspect the on/off switch wire connections.

4 D e Boa criv rd 2. Repla1. Inspect wire connections to the drive board.

e the drive board as a test.

6-05-03

T670 Troubleshooting:Telemetry Heart Rate

1. Circumstance of Malfunction: （1）There is no telemetry heart rate signal. （2） The telemetry heart rate signal is incorrect.

2. Block Diagram

Telemetry

Transmitter

Telemetry

Receiver Board

Display Board

6-06-01

3. Normal Operation

Order Part Operation

1 Telemetry Heart Rate Transmitter

1. The telemetry heart rate transmitter detects the human heart rate and transmits the heart rate signal to the receiver board.

2 Telemetry Heart Rate Receiver

1. The telemetry heart rate receiver board receives the signal and transmits the signal to the display.

3 Display Board 1. The main CPU receives the heart rate signal. 2. The display shows the heart rate.

4. Analysis

（1）The telemetry strap is defective or its batteries have low voltage. （2）The telemetry heart rate receiver is defective; it does not detect heart rate. （3）The telemetry heart rate receiver fails to receive a signal. （4）The telemetry heart rate receiver three-pin cable is not connected. （5）The display is defective. The CPU does not receive the heart rate signal.

6-06-02

5. Troubleshooting

r Orde art ProcedureP

1 T nsmitte

pect lace

Tera

lemetry r

1. Ins2. Rep

the transmitter: Is it a SportsArt transmitter. the transmitter as a test.

2 Tele try

me Receiver 1. Inspect2. Inspect

the telemetry heart rate receiver: Is it fastened securely? the receiver board: Is the connector soldered securely?

3 3 n Cabl ect -pi e 1. Insp the cable connection. 4 isplay ss oD 1. Pre n the CPU to ensure proper connections.

6-06-03

T670 Troubleshooting:HTR Heart Rate Malfunction

1. Circumstance of Malfunction：（1） Hold onto the HTR handlebar contacts. The display has no reaction. （2） Do not hold onto the HTR handlebar contacts. The display shows a

heart rate value.

2. Block Diagram

Display Board HTR Board

HTR Contact (Left)HR Signal

HTR Contact (Right)

6-07-01

3. Operation


1 HTR Handlebar

1. Hold onto the HTR contacts with both hands. 2. The contacts detect heart rate.

2 HTR Cable

1. The heart rate signal travels the left and right HTR cables to the HTR board.

3 HTR Board

1. HTR board signal indicator responds. 2. The heart rate board processes the signal.

4 3-pin Cable 1. The HTR board signal travels the cable to the display board.

5 Display 1. The display CPU detects the heart rate signal. 2. The heart rate value appears on the display.

4. Analysis （1）HTR contacts or wires are defective. HTR board does not detect a heart rate signal. （2）HTR board does not read the handlebar signal. （3）The display CPU does not detect the HTR signal.

6-07-02

5. Troubleshooting


1 HTR Han ba

Clean Hdle r Contacts 2. Test HT

1. TR contacts. R wires.

2 Cables

Test theHTR . Inspect1 the HTR cable for crimps or breaks.

2. HTR cable.

3 R Boar

nspect 2. If LED23. If LEDmalfunctio

ED2is malfunc5. If you dthe HTR b

HT d 4. If L

1. I HTR board HTR contact LED. does not light, the HTR cable or contact is malfunctioning.2 lights but LED3 does not light, the HTR board is ning. lights, LED4 flashes, but there is no output, the HTR board tioning. o not hold the handlebar but the HTR board LED4 flashes, oard is malfunctioning.

4 Cables nspect 1. I the cables from the HTR board to the display.

5 D play B 1. Inspect ect is oard 2. Insp

the heart rate cable connections. whether the display U4 IC is seated properly.

6-07-03

T670 Troubleshooting:Safety Key Does Not Operate

1. Circumstance of Malfunction: (1)Put safety key in place. There is not reaction whatsoever. (2) Do not put safety key in place. Unit operates as if the safety key

was in place.

2. Block Diagram

Display Board

Safety Key Board

Safety Key

6-08-01

3. Operation t Order Operation Par

1 Saf y Key ut the s

2. In use, ret1. P afety key in place to operate the unit.

emove the safety key. The unit stops operating.

2 Safety Key

1. Test the sides of

al ral rBoard

reed switch on the safety key board by probing on both the reed switch.

2. Norm3. Norm

eading with the safety key in place: short. eading without the safety key: open.

3 Safety Key y Cable

The safet key circuit condition travels to the display via the cable.

4 Display Bo U dc

2. If the circ

ard 1. If the cir

The CP etects the safety key situation: uit is a short, unit operates. uit is an open, the unit will not operate.

4. Analysis

4-1. The safety key magnet has lost all attraction. 4-2. The safety key board reed switch is broken. 4-3. Wires are not connected.

4-4. The display safety key circuit is malfunctioning.

6-08-02

5. Troubleshooting t Order TroubleshoPar oting

1 hSafety Key Inspect w ether the Safety Key magnet attracts to metal.

2 Safety Key Board

thTest whe er the safety key board reed switch operates propearly.

3 Dat Cable ha Inspect w ether the cable is connected properly.

3 Disp Bo ulay ard 2. Inspect t1. Make s re the IC chip is seated properly.

he safety key circuit.

6-08-03

T670 Troubleshooting:Fan Malfunction

1. Circumstance of Malfunction: Press the <Fan> key. The fan does not operate.

2. Block Diagram

Fan Key Board Display Board Fan Circuit

Board Fan

6-09-01

3. Operation Order Operation Part

1 Fa Bon K y e ard Press the fan key to determine fan operation.

2 Displ Bollo

ay ard on the disp2. The fan

1. The disp ay CPU reads the <FAN> key setting and shows the setting ay. peration includes high, medium, low and off settings.

3 Fan Circuit

1. The fan display sett

hm

he lo On the of

Board

circuit board sends voltage to the fan according to the ing.

2. On the On the On t

igh setting, voltage output is 12 VDC. edium setting, voltage output is 9 VDC. w setting, voltage output is 6 VDC. f setting, voltage output is 0 VDC.

4 n The fan opFa erates according to output from the fan circuit board.

4. Analysis

4-1. If you press the fan key but the display does not show a fan setting, possible reasons include the following: A. Cables are not connected properly. B. The key board fan key is malfunctioning. C. The display is not functioning. 4-2. If you press the fan key and the display shows the fan setting but the fan does not operate, possible reasons include the following: A. The display does not operate. B. The fan circuit board is malfunctioning, not sending voltage to the fan.

C. The fan is malfunctioning. D. Cables are not connected properly.

6-09-02

5. Troubleshooting Order TroubleshoPart oting

1 Fa Bo n K y e ard Inspect the fan key board operation.

2 Displ Boay ard 2. Inspect t1. Inspect the display fan setting.

he display. 3 t the Cable Inspec cable connections.

4 tFan Circuit Board

1. Inspect he fan circuit board for output voltage.

5 n ect tFa 1 p. Ins he fan for an electrical open.

6-09-03

Testing－ EMI Filter

1. Test Configuration

(1) Fig. 1. Point A to pointＢtest (2) Fig. 2. Point C to point D test

C A

D B

7-01-01

(3) Fig. 3: Point A to point E test

2. Test Procedure 1. Disconnect the EMI filter wires. 2. Put voltmeter to the 200 Ohm setting. Place probes separately as shown in Figure 1-3. 3. Normal test results are shown below.

Figure Test Item Test Points Normal Result Notes Figure 1 Short Test A-B 0 (short) AC1 Figure 2 Short Test C-D 0 (short) AC2

Figure 3 AC to Cover A- E C- E OL – no reaction AC1→Cover

AC2→Cover

A

E

7-01-02

Testing － Motor


7-02-01

2. Test Procedure

2-1. Motor Winding Short Test 2-1-1. Put voltmeter to the 200Ω setting. Disconnect motor wires from the drive board. Normal readings:

Probe Placement

Normal Result

Red -White 0.1Ω Red -Black 0.1Ω White-Black 0.1Ω

2-1-2. Voltmeter should show continuity. 2-1-3. If there is an electrical open, the motor windings have broken. Replace the servo motor.

2-2. Ground Wire Test 2-2-1. Put voltmeter to the 200Ω setting. Disconnect motor wires from the drive board. Normal readings:

Probe Placement

Normal Result

Green-Red OL Green-Black OL Green-White OL Green-Motor Cover

0.1Ω

2-2-2.If there is an electrical short, the motor windings have broken and made contact, replace the servo motor.

7-02-02

3. Motor Label Information

Item Symbol Value Explanation

1 Power 5 HP Peak Power, 5 HP (Peak)2 Torque 6.1N-m Torque Rating, 6.1 Newton-Meters (Rated)3 Torque 18.2N-m Peak Torque, 18.2 Newton-Meters (Peak)4 TYPE P.M.S.M Motor type: (Permanent Magnet Synchronous

Motor) 5 Insulation F Insulation grade: F grade (155) 6 RPM 3600 RPM Rating: 3600 RPM Volts 230V Volt rating: 230 V

8 AMBient 40°C Ambient temperature: 40°C 9 BRG 6204zz/6205zz Bearing type: rear 6204, front 6205, sealed on

two sides

7-02-03

Testing － Inductor


2. Test Procedure 1. Disconnect inductor wires. 2. Put voltmeter to the Ohm setting. Place probes separately as shown on the inductor wire terminals. 3. Normal reading: 2 Ohm or less.

7-03-01

Testing － Incline Motor Voltage


7-04-01

2. Incline Indicator Positions

LED3 INC_DN

LED2 INC_UP

7-04-02

3. Test Procedure 3-1. Put voltmeter to the 600 VAC setting. Place probes separately as shown.

When operating up, place probes on CON5 white and black wires. When operating down, place probes on CON5 white and red wires.

3-2. Turn on unit power. Press the QUICK START key or the START key to operate the treadmill. 3-3. Press the INCL<> key to make the unit operate up. Voltage: 110 VAC (USA); 220 VAC (Europe). Press the INCL<> key to make the unit operate down. Voltage: 110 VAC (USA); 220 VAC (Europe). 3-4. Normal voltage readings follow:

AC Incline Motor Up Down CON5 White - Black White - Red

110 VAC Areas 110V 110V 220 VAC Areas 220/240V 220/240V

4. Troubleshooting

4-1. Press INCL<>/ INCL<>. CON5 outputs AC voltage. If not, inspect the following: A. Inspect whether F13A fuse is not connected properly or is burnt.

B. Inspect the drive board.

7-04-03

Testing － Incline Calibration Switch


7-05-01

2. Test Procedure

1. Put voltmeter to the 20K Ω setting. Place probes separately on the incline calibration sensor terminals. 2. Touch the incline sensor to activate it. 3. Normal reading: 0Ω.

3. Troubleshooting 1. If not as above, replace the incline calibration sensor.

7-05-02

Testing － Safety Key Switch


7-06-01

2. Test Procedure

2-1. Put voltmeter to the 200 Ohm setting. Place probes separately on both ends of the SW2 reed switch.

2-2. Do not put the Safety Key in place. Place probes on both ends of the reed switch. Normal reading: OL (electrical open). 2-3. Put the Safety Key in place. Place probes on both ends of the reed switch (above left). Normal reading: 0Ω (continuity).

3. Troubleshooting 1. If not as above, the reed switch is bad. Replace it.

Safety Key Board Voltmeter Reading Safety Key in Place Normal reading: 0

(continuity) Safety Key not in Place Normal reading: OL (open)

7-06-02

Testing － Telemetry Reception


Heart Rate Reading

Telemetry Heart Rate Transmitter

7-07-01

2. Test Procedure 2-1. Static Test

(1) Put telemetry strap in place. (2) Do not turn on the motor. Stand on unit walk belt, about 100 mm from the display. (3) The display shows the heart rate reading.

2-2. Active Test (1) Put telemetry strap in place. (2) Press the SPEED<> or <> key. Set the SPEED setting. (3) After the treadmill belt starts moving, run on the walk belt, within 100 mm from the display. (4) The display shows the heart rate reading.

2-3. Other Test (1) Do the same tests above on another product with telemetry reception.

3. Troubleshooting

3-1. If no heart rate reading appeared during the static test, this unit is not reading telemetry heart rate signals under the best conditions. See below. 3-2. If a heart rate reading appeared during the static test but none during the active test, the unit is experiencing interference from itself, most likely the motor. Replace the motor as a test. 3-3. If a heart rate reading appeared on the other product with telemetry heart rate reception but not on this product, inspect the telemetry heart rate receiver board, the HTR board, and the display IC. See HTR board LED definitions for troubleshooting assistance. If the heart rate reading did not appear on any product, replace the telemetry strap.

7-07-02

Testing － Heart Touch Rate (HTR) Board

1. HTR Board Indicator LED Placement and Definitions

2. Indicator Definitions LED Color Name Explanation

LED1 Red Telemetry Indicator Flashing indicates incoming telemetry heart rate signal.

LED2 Orange HTR Contact Indicator

Lit indicates hands are holding HTR contacts.

LED3 Green HTR Input Indicator Flashing indicates incoming HTR signal. LED4 Red Output Indicator Each flash represents an outgoing pulse signal.

LED1 LED2 LED3 LED4

7-08-01

2. Test Procedure

The following indicates normal heart rate operation. 1. Do not hold onto the HTR handlebar. HTR board indicators do not light. 2. Hold onto the HTR handlebar with both hands. The HTR board LED2 indicator lights. 3. LED3 indicator flashes, indicating an incoming HTR handlebar signal. 4. LED4 indicator flashes, indicating the HTR board is emitting the HTR signal to the display board. 5. Within ten minutes, a heart rate appears in the heart rate window.

3. Troubleshooting

If not as above, follow the procedure below:

Malfunction Cause Part in Question

LED1 (POLAR) not flashing

POLAR receiver is not detecting a heart rate or the signal is not getting to the HR board.

POLAR transmitter, POLAR receiver board, wires

LED2 (HTR) not lighting

HTR handlebar is not being held or there is no detection of a signal at the HR board.

HTR handlebar, wire from HTR board to handlebar

LED3 (HTR) not flashing

Signal is not arriving from HTR handlebars. HTR handlebar, cable, HR board

LED4 (HTR+POLAR) not flashing

POLAR receiver or HTR is not emitting a heart rate signal to the display.

If all other HR board LEDs are normal, replace the HR board.

Display Shows No HR Value

If HR board LEDs are normal, inspect the 3-pin cable, its connections, and the display board

3-pin cable, connections, display board

7-08-02

Testing － HTR Handlebar Continuity

1. Test Procedure 1. Do not turn on unit power. Remove the HTR board three-pin connector. 2. Put voltmeter to the 200 Ohm setting. Place probes separately as shown. 3. Normal test results:

Continuity Test Ground Test

Test Point Normal

Result A-a Continuity A-b OPEN

Fig. 1. Place red probe on the following: Fig. 2. Place the black probe on the HTR contact.

Test Point Normal Result

A-GND OPEN Frame to GND OPEN

HTR Board 3-pin Connector HTR Handlebar Contact

a

GND A

b

7-09-01

2. Test Procedure The following indicates normal heart rate operation.

1. Do not hold onto the HTR handlebar. HTR board indicators do not light. 2. Hold onto the HTR handlebar with both hands. The HTR board LED2 indicator lights. 3. LED3 indicator flashes, indicating an incoming HTR handlebar signal. 4. LED4 indicator flashes, indicating the HTR board is emitting the HTR signal to the display board. 5. Within ten minutes, a heart rate appears in the heart rate window.

3. Troubleshooting If not as above, follow the procedure below:

Order Malfunction Troubleshooting Possible Malfunction

1 LED1 does not light No incoming telemetry HR signal POLAR transmitter, transmitter wires

2 LED2 does not light HTR contacts not touched HTR handlebar contacts, wires from handlebar to HTR board

3 LED3 does not light No incoming HTR signal HTR handlebar contacts, wires from handlebar to HTR board

4 LED4 does not light No outgoing HTR signal HTR board

5 No HR on display No HR reception or processing at display 3-pin cable, display

7-09-02

Testing － Motor Thermal Sensor


7-10-01

2. Test Procedure 2-1. Disconnect CON1, the thermal sensor switch wire, from the drive board. 2-2. Place probes separately to the 200Ω setting. Place probes separately as shown. 2-3. If the motor is not too hot, the voltmeter shows 0, continuity.

Motor Thermal Sensor Condition

Normal Reading Notes

Motor is not too hot; thermal sensor is not

activated.

0, continuity Normal condition is 0, continuity.

Motor is too hot; thermal switch has

activated.

No reaction (OL), electrical open

Feel the motor cover to confirm.

3. Troubleshooting 3-1. If the thermal sensor circuit is an electrical open but the motor is not too hot, the thermal sensor is malfunctioning.

7-10-02

Testing－ Fan Board Voltage


7-11-01

2. Test Procedure 2-1. Put voltmeter to the VDC setting. Place probes as on CON1 terminal pins as follows: red probe on thebrown terminal, black probe on the black terminal. 2-2. Press the <FAN> key. Turn on the unit fan. Display shows FAN Low (Mid/High). 2-3. Normal readings follow:

Display Shows STOP LOW MID HIGH VDC Reading 0V 6V 9V 12V

3. Troubleshooting 3-1. Press the <FAN> key. Fan operates. The fan setting toggles as follows: STOP→LOW→MID→HIGH→STOP.

3-2. If when you press the＜FAN> key, the display does not show the fan setting, inspect the fan key, fan cables, and display board. 3-3. If when you press the <FAN> key, the display shows a fan setting but the fan does not operate, inspect the fan board, fan cables, fan, display board.

7-11-02

Testing － Power Supply at the Drive Board


7-12-01

2. Test Procedure

2-1. Put voltmeter to the 400 VAC setting. Place probes on the white and black wires as shown.

2-2. Turn on unit power. The power switch illuminates. Normal reading: 110 (USA) or 220 (Europe). Normal test results follow:

3. Troubleshooting 3-1. Turn on unit power. If there is no voltage across the black and white wires, inspect the following: A. Power cable connections B. Power switch and its connections C. EMI filter wire connections

Test Wires Normal Test Results BLACK – WHITE 110 (or 220V) WHITE – GREEN OL, no reaction BLACK – GREEN OL, no reaction

7-12-02

Testing－ Display Board Power Supply


VBB Test Configuration

VCC Test Configuration

7-13-01

2. Test Procedure

2-1. Put voltmeter to the DC setting. Place probes as shown.

2-2. Turn on unit power. Power switch LED lights. Normal reading: +5V (VCC) and +16V (VBB). Normal Test Results Test Configuration

3. Troubleshooting 3-1. Turn on unit power. There is no power reading. Inspect A. Inspect cable connections. B. Inspect drive board.

Normal Reading VBB +16V VCC +5V

7-13-02

T670/T680 Treadmill Walk Belt Adjustment Walk belt adjustment is needed when the belt tracks too much to one side or when the belt is too loose or tight.

Step 1. Set speed to 4 KPH/ 2.5 MPH.

Step 2. The walk belt should rotate in the center of the deck with equal space on both sides. To adjust a walk belt that tracks improperly to one side, turn one adjustment screw. Example: If the walk belt tracks to the right side, turn the right adjustment screw clockwise. This adjusts the right side of the rear roller toward the back, pushing the walk belt to the left side. Likewise, turning the left adjustment screw clockwise would make the walk belt move toward the right side.

A B

Step3. To increase or decrease walk belt tightness, turn adjustment screws on both sides. Turning adjustment screws clockwise pulls the belt tighter. Turning counterclockwise makes the belt looser. Tip: To maintain tracking when tightening or loosening a walk belt, simultaneously turn adjustment screws on both sides an equal amount.

8-1-1

T670/T680 Treadmill Walk Belt Tightness Adjustment

Step 1: Set speed to 4 KPH/2.5 MPH. (T680 below left; T670 below right)

Step 2: If belt tends to one side, adjust one side only until the margin (A&B) on both sides is

the same.

A B

Clockwise tightens belt

Counter- clockwise loosens belt

8-1-2

T670/T680 Treadmill Walk Belt Tightness Adjustment Step 3: Test belt tightness by lightly bearing against it.

Step 4. If too loose, turn adjustment screws on both sides equally one half to one turn. If too tight,turn adjustment screws on both sides counterclockwise one half to one turn.

Notes:

When you test belt tightness, if the motor operates normally, 1. But the walk belt can be stopped for more than ½ second, the walk belt is too loose.

Simultaneously rotate both adjustment screws clockwise 1/2 to one turn. Test again. Adjust until the walk belt slips briefly but quickly regains traction and begins to rotate.

2. And the walk belt cannot be stopped or slowed whatsoever, the belt may be too tight. Simultaneously rotate adjustment screws counterclockwise 1/2 to one turn. Test again.

8-1-3

T670/T680 Treadmill Walk Belt Alignment

Adjustment circumstances: The walk belt is crooked or too far to one side.

Step 1. If the gap size differs from top to bottom, adjust the top screw.

Step 2. Attach front roller set block.

A

B

Step 3. Adjust the rear roller screws.

8-2-1

Step 1. Adjust left/right rear roller screws.

2. Adjust the walk belt left/right adjustment screws.

Step 2:1.Use a tool to pry the front roller tight.

2. Install the front roller adjustment block, adjusting its position with the screw.

8-2-2

Step 3:1. Adjust rear roller adjustment screws. 2. Job complete: a straight walk belt.

8-2-3

T670 AC Motor Incline Software Calibration Procedure


8-3-1

2. Software Calibration and Testing (1) Calibration through Operation

a. Continuously press the INCL<> key until the incline window shows 15%. As the incline motor operates, LED3 on the drive board lights. When the incline motor stops moving, LED3 on the drive board extinguishes.

b. Continuously press the INCL<> key until the incline window shows 0%. As the incline motor operates, LED2 on the drive board lights. When the incline motor stops moving, LED2 on the drive board extinguishes.

c. The AC incline motor operates until it hits the calibration switch. When it hits the calibration switch, the AC incline motor stops operating. This indicates the incline motor is calibrated.

(2) Calibration when not in Operation

a. In QUICK START mode, press the STOP key. b. In PROGRAM mode, continuously press the STOP key three seconds. c. When the unit stops, turn on the unit again.

The feedback window shows the model number. Incline operates down until it hits the calibration switch and stops. When you press the INCLINE key again, the value in the INCLINE window shows 0%, indicating the incline is calibrated properly.

8-3-2

T670/T680 AC Incline Motor Calibration – Hardware Calibration Procedure

Step 1. Set the unit onto a block.

Step 2. Detach CON8 incline calibration wirefrom the drive board.

Step 3. Remove the incline motor cover.

Step 4. Press INC DN key until the incline declines fully. Then turn off unit power.

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Step 5. Set off the AC incline motor down limiter.

Step 6. Remove CON5 and the ground connector.

Step 7. Remove the R-clip and lower incline pin.

Step 8. Remove the hitch pin and upper incline pin.

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Step 9. Remove the AC incline motor set.

Step 10. Set the distance between holes to 264 mm.

Step 11. After calibrating the incline,

reinstall the incline. Connect wires.

Step 12. Press the INC UP key to 2% and stop. Let unit operate.Press the INC DN key to 0% to complete calibration.

264 mm

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Step 13. Test Procedure (1)Continuously press the INCL<> key until the INC window shows 15%. Incline

operates upward. Drive board LED3 lights. When the incline stops operating, LED3 extinguishes.

(2) Continuously press the INCL<> key until the INC window shows 0%. Incline operates downward. Drive board LED2 lights.

(3) AC incline motor operates downward until it hits the calibration switch and stops, indicating successful calibration. When the incline motor stops operating, LED2 extinguishes.

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t670 treadmill electronics repair manual - sportsart

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