T670 Error Message - SportsArt Fitness

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
WORKOUT GOAL
& QUICKSTART Keys
Heart Rate Window
PROGRAM
Keys
Feedback Screen
Setting Screen
and Keys
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
5*8 two-color LED dot matrix 4 sets, Workout Program Illustration
Illustration Screen
14-segment display, 16 sets（0.8”, green）, Shows scrolling character strings and
Feedback Screen
Percentage Screen exercise feedback values
26 x 2-color LED rectangular display shows percentages
1. TIME
2. DISTANCE
Setting Value Screen
3. SPEED
4. CALORIES
0.1-12.0 MPH (American Standard)
Speed
0.2-20.0 KPH (Metric)
0.5% increments
0-15﹪
Incline
TRACK、RANDOM、GLUTE、INTERVAL（1：1，1：2，2：2）、
Workout Programs 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
TIME
： 0：00-99：59
DISTANCE
： 0.01-9999 Km/Mile
CALORIES
： 0.0-9999 K˙CAL (1000 calories)
Feedback
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
Heart Rate
Screen
Goal Setting
Value Screen
and Setting
Keys
Screen
Workout
Program Keys
Keys and Fan
2-01-02
3. Introductions－ Display Board (Heart Rate Indicator)
WORKOUT GOAL and Quick Start Indicator
ÎLit indicates the program is active.
Heart Rate Indicator
Setting Values
Î Lit indicates time, distance, speed
calorie values.
Workout Programs
Î Lit indicates active program: TRACK, RANDOM, GLUTE,
INTERVAL, 5K, 10K, WT LOSS, CARDIO, CUSTOM HR, FIT
TEST.
2-01-03
Display Lock/Unlock Key and
Indicator
Î Lit indicates the active row and
scan/lock mode.
4. Introduction－ Display Board (Keys)
<TIME>
<DISTANCE><CALORIE
S><QUICK START>
Keys
ÎWORKOUT GOAL
selection keys and Quick
Start key
<Display Lock/Unlock>
ÎPress to toggle between
rows. Also press to activate
scan/lock feature.
＜ENTER＞＜▲＞＜▼
＞＜0~9＞＜CLEAR＞
Keys
ÎConfirm, up/down,
numbers, clear keys
< TRACK > < RANDOM >
< GLUTE > < INTERVAL >
< 5K > <10K > <WT LOSS
><CARDIO> <CUSTOM
HR><FIT TEST> Keys
Î Program selection keys
<INCLINE><SPEED>
＜STOP＞＜FAN＞Keys
ÎIncline, 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
CON1:
To soft keys
CON3:
To Cardio Board
J11:
To soft keys
CON1:
To fan board
J6:
To contact HR board
J7:
To telemetry receiver
board
4-01-01
J2:
To drive board
JP2:
To key board
2.Display Cable Connection Block Diagram
Fan
CON1
Telemetry
HR Reciever
J7
Cardio
Board
JP2
Display Board
J1(CON3)
J11
Soft Keys
J10
J6
J2
Key Board
HTR
Board
HTR Contacts
(L/R)
Drive Board
4-01-02
1. Drive Board Cable Connection Block Diagram
CON1
ÎTo motor thermal switch
CON4
ÎTo inductor
CON3
ÎTo power supply
CON5
ÎTo incline motor
CON2
Î To motor
CON6
ÎTo motor encoder
CON7
ÎTo display board
CON8
ÎTo incline calibration switch
4-02-01
CON9
ÎTo display board
2. Drive Board Cable Connection Block Diagram
Power
Cord
FUSE
Display Board
CON9
On/off
switch
EMI
Filter
Inductor
(220V)
CON7
CON3
Drive Board
CON4
CON5
Incline Motor
Set
4-02-02
CON1
Thermal
Fuse
CON2
Motor
CON6
Encoder
CON8
Calibration
Switch
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%
Up Travel
Time
Down Travel
Time
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
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%
Black – Up
Red – Down
White - N
DISPLAY
UP
DOWN
DRV LED
LED 3→ON(UP)
LED 2→ON(DOWN)
Up Travel
Time
Down
Travel Time
Output
Voltage
Incline Operation
Black - White
110v/(220v)
Up
Red - White
110v/(220v)
Down
4-03-02
T670 Fan Operation Block Diagram
DISPLAY
FAN-HIGH
FAN-MID
FAN-LOW
Fan Board
Power Output
DC 12V
DC 9V
DC 6V
4-04-01
Fan
Output
High
Medium
Low
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
1
2
3
4
8
Represents
Servo motor abnormality
IGBT abnormality
Incline motor abnormality
Power supply abnormality
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
Servo Motor
Drive Board
Inductor
(220V only)
5-02-01
Encoder
Order
1
2
3
4
3. Operation
Part
Explanation
1. Turn on unit power. Drive board detects encoder signal.
Drive Board 2. After confirming the signal is OK, the drive board transmits the signal
to the display.
Data Cable The encoder signal is transmitted through the data cable.
1. After detecting the drive board signal, the display maintains
communication with the drive board.
2. If the drive board does not detect the encoder signal, E1-1 appears
Display Board on the display.
Encoder
Encoder detects 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
Servo Motor
Drive Board
Inductor
(220V only)
5-03-01
Thermal
Sensor
Order
1
2
3
4
3. Operation
Part
Explanation
Drive board detects the thermal sensor signal and transmits that signal
Drive Board
to the display.
Data Cable The thermal sensor signal travels via the data cable.
1. The display detects the thermal sensor signal from the drive board.
Display Board 2. If the drive board doesn’t detect a thermal sensor signal, the display
shows E1-2.
2. The thermal sensor detects motor temperature. In normal operation,
the sensor completes the circuit. When the temperature rises, the
Thermal Sensor sensor becomes 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
Servo Motor
Drive Board
Inductor
(220V only)
5-04-01
Encoder
Order
1
2
3
4
3. Operation
Part
Explanation
The drive board detects the encoder signal and transmits it to the
Drive Board
display board.
Data Cable The encoder signal travels via the data cable.
1. The display board detects the encoder signal from the drive board.
2. If the drive board does not receive the over speed error signal, E1-3
Display Board
appears on the display.
Encoder
Encoder detects 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
IGBT
Drive Board
Inductor
(220V only)
5-05-01
Servo Motor
Order
3. Operation
Part
1
Drive Board
2
Explanation
The drive board detects the IGBT over current signal and transmits the
signal to the display board.
1. The display board receives the drive board IGBT over current signal.
Display Board 2. If the drive board detects the IGBT over current signal, the display
shows E 2-1.
The display provides the speed signal to the motor.
3
IGBT
4
Servo Motor
The motor runs 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
IGBT
Drive Board
5-06-01
Servo Motor
Order
1
2
3
4
3. Operation
Part
Explanation
The drive board detects the IGBT over heat signal and transmits that
Drive Board
signal to the display board.
1. The display receives the IGBT over heat signal from the drive board.
Display Board 2. If the drive board detects the IGBT over heat signal, the display
shows E 2-2.
IGBT
The display board provides the speed signal to the motor.
The motor operates fast or slow according to the power supplied by the
Servo Motor
IGBT.
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 is p la y B o a rd
D riv e B o a rd
A C In c lin e M o to r
C a lib ra tio n
S w itc h
5-07-01
Order
3. Operation
Part
1
Drive Board
2
3
4
Explanation
The drive board detects the calibration switch signal and transmits it to
the display board.
1. The display receives the calibration switch signal from the drive
board.
Display Board
2. If the drive board does not detect the calibration signal, E 3-1
appears on the display.
The calibration switch operates when the unit arrives at the 0%
Calibration
position.
Switch
AC Incline Motor
The drive board controls the AC incline motor according to the display
board signal.
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
Power
Cord
FUSE
Display Board
On/Off
Switch
EM I
Filter
Drive Board
Inductor
(220V only)
5-08-01
Order
3. Operation
Part
1
Drive Board
2
Explanation
The drive board detects the power supply voltage and transmits a
signal to the display board.
1.The display receives the error message from the drive board.
Display Board 2. If the drive board detects an error message, E 4-2 or E 4-3 appears
on the display.
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
Pow er
S u p p ly
Fuse
D isp la y B o a rd
CON9
O n /O ff
S w itch
EMI
F ilte r
CON7
CON3
D rive B o a rd
CON4
5-09-01
Order
3. Operation
Part
1
Drive Board
2
Data Cable
3
Explanation
1. Turn on unit power. Drive board detects various circuit functions.
2. After inspecting for normal startup, the drive board sends
confirmation signal to the display board and starts communication.
The drive board signal travels through the data cable to the display.
1. After the display CPU starts up, the display receives drive board
Display Board signals and begins communication
2. If there is 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
Power
Cord
Fuse
Display Board
On/Off
Switch
EMI
Filter
Drive Board
5-10-1
3. Operation
Order Part
1
2
3
Explanation
1. The display CPU sends signals to the drive board according to user settings.
2. During operation, the display CPU detects whether the display and drive board
Display communication is normal.
Board 3. The display shows E-8-2 if communication is abnormal.
Data
Cable
Drive
Board
Display and drive board signals travel the data cable.
After receiving signals from the display, the drive board CPU controls the motor and
incline operation.
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
CON 7
CON 2
Inductor (220V
only)
Servo Motor
Drive Board
CON 4
CON 6
6-01-01
Encoder
3. Operation
Order
1
2
3
4
5
6
Part
Troubleshooting
1. Press the SPEED key. The display shows the speed value.
Display Board 2. The display CPU sends the motor signal to the drive board to control
motor speed.
1. The inductor is only used on 220V products.
Inductor (220V) 2. The inductor stabilized drive board AC voltage to VH voltage and
transmits it to the motor circuit on the drive board.
CON7 Cable The display board signal travels this cable to the drive board.
After processing the motor speed signal, the drive board emits voltage
Drive Board
to the motor, making the motor rotate.
The motor operates according to the voltage it receives. Motor rotation
Servo Motor
makes the walk belt move.
Encoder
The encoder 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
Order
1
2
3
4
5
6
Part
Troubleshooting
1. Press down to insert the display IC.
Display Board
2. Inspect cable connections at the display and drive board.
1. Inspect the data cable connections at the display and drive boards.
Data Cable
2. Inspect whether the data cable is pinched or crimped or cut.
3. Replace the data cable as a test.
Inductor (220V) Re-connect the inductor wire connections.
1. Re-insert CON 6.
Encoder
2. Replace the encoder as a test.
1. Inspect all wire connections on the drive board and inductor (220)
Drive Board 2. Replace the drive board as a test.
Motor
2. Inspect the CON 2 connection on the drive board.
3. Replace the 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
JP6(CON 7)
J7(CON 13)
Keys
Display Board
J25(CON 8)
6-02-01
Key
Board
3. Operation
Order
Part
1
2
3
Operation
1. Normal situation: Do not press any key. Key circuit is an electrical
open. There is no key operation.
Key Switch 2. Normal situation: Press a key. Key circuit is an electrical short. Key
operates.
Cable
1. The key signal is travels the cable.
1. Display CPU reads the key signal.
Display Board
2. The display 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
Order
Part
Troubleshooting
1. Inspect key cable connections.
1
Key Switch
2. Test key operation.
2
Key Cable
1. Inspect key cable connections to the display.
3
Display Board If the key switch 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
Power
Cord
Fuse
Display Board
CON9
On/Off
Switch
EMI
Filter
CON7
CON3
On/Off Switch
Drive Board
Inductor
(220V only)
CON4
6-03-01
3. Operation
Order
Part
1
Power Cord
2
EMI Filter
3
4
5
6
7
Operation
Provides power.
Filters power.
Fuse and Fuse The fuse protects the unit. If current is too high, the fuse blows.
Holder
Power Switch 1. When switched to “0”, the drive board has no power.
2. When switched to “1”, the drive board has power.
Drive Board The drive board processes power and transmits it to the display board.
CON7 & CON9 Power from the drive board travels via these cables to the display
board.
Cables
1. The display board stabilizes VBB, making it VCC voltage.
Display Board 2. When the 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
Order
1
2
3
Part
Power Cord
EMI Filter
Troubleshooting
Inspect whether the power cord is connected well.
Inspect EMI filter wire connections.
1. Inspect the fuse holder wire connections.
Fuse and Fuse 2. Inspect the fuse holder spring.
Holder
3. Inspect whether the fuse is burnt.
3
On/Off Switch
4
5
AC Cable
Drive Board
6
Data Cable
1. Push on/off switch to “1”. Inspect whether the switch lights up. It
should.
2. If it does not light up, inspect the power cord and EMI filter.
3. Replace the on/off switch as a test.
Inspect CON3 cable connections.
Inspect the drive board CON7, CON9 connections.
1. Inspect the data cable between the display board and drive board.
2. Inspect 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
Incline Up/Down
Signal
AC Incline
Motor Voltage
Incline Motor
Drive Board
Calibration
Signal
6-04-01
Calibration
Sensor
3.Incline Operation
15%
14%
13%
12%
11%
10%
9%
8%
7%
6%
5%
4%
3%
2%
1%
0%
DISPLAY
UP
DOWN
DRV LED
LED 3→ON(UP)
LED 2→ON(DOWN)
Output
Voltage
Incline Operation
Black-White
110v/(220v)
Up
Red-White
110v/(220v)
Down
6-04-02
4. Operation
Order
1
2
3
4
Part
Explanation
1. Press INCL<▲> or INCL<▼> key. Incline window values chance
Display Board accordingly.
2. The display CPU sends the incline up/down signal to the drive board.
Data Cable 1. The incline up/down signal travels the drive board.
1. Turn on unit power. The drive board automatically calibrates the
incline. Incline goes to the lowest position and hits the incline
calibration switch.
2.When the drive board IC receives the display incline command
Drive Board signal,
the drive board incline up LED3 lights and the drive board emits power
for incline up operation (across BLACK-WHITE wires); the drive vboard
incline down LED2 lights and the drive board emits power for incline
down operation (across RED-WHITE wires).
1. When the drive board INC_UP indicator lights, the incline motor
operates up.
Incline Motor
2. When the drive board INC_DN indicator lights, the incline motor
operates down.
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
Order
1
Part
Incline Motor
2
Drive Board
3
Data Cable
4
Display Board
Troubleshooting
1. Inspect whether the incline motor has an electrical open.
1. Inspect the drive board wire connections.
2. Inspect the drive board F1 3A incline fuse? Replace it if necessary.
3. When the incline up or down LED lights, does the drive board put out
power to the incline motor.
1. Inspect data cable connections.
2. Inspect whether the data cable is crimped or broken.
3. Replace the cable as a test.
1. Press the INCL<▲>/<▼> key. After the incline window values change,
does the incline 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
Power
Cord
Display Board
Fuse
On/Off
Switch
CON9
L
EMI Filter
CON3
N
Drive Board
6-05-01
3. Operation
Order
1
2
3
4
Part
EMI Filter
Fuse and
Fuse Holder
On/Off Switch
Drive Board
Explanation
Provides power.
When the drive board or other components have malfunction, the fuse
breaks.
When the switch is set at “1”, power enters the treadmill.
When there is no malfunction, the display lights up normally.
When there 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
1
3
Part
EMI Filter
Fuse and Fuse
Holder
On/Off Switch
4
Drive Board
2
Explanation
1. Inspect EMI filter wire connections.
1. Inspect whether the fuse and fuse specifications match.
2. Inspect the fuse wire connections.
1. Inspect the on/off switch wire connections.
1. Inspect wire connections to the drive board.
2. Replace 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
Display Board
Telemetry
Receiver Board
6-06-01
Telemetry
Transmitter
3. Normal Operation
Order
1
Part
Operation
Telemetry Heart 1. The telemetry heart rate transmitter detects the human heart rate and
Rate Transmitter transmits the heart rate signal to the receiver board.
2
Telemetry
Heart Rate
Receiver
3
Display Board
1. The telemetry heart rate receiver board receives the signal and
transmits the signal to the display.
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
Order
1
2
3
4
Part
Procedure
Telemetry
1. Inspect the transmitter: Is it a SportsArt transmitter.
Transmitter
2. Replace the transmitter as a test.
Telemetry Receiver 1. Inspect the telemetry heart rate receiver: Is it fastened securely?
2. Inspect the receiver board: Is the connector soldered securely?
3-pin Cable
1. Inspect the cable connection.
Display
1. Press on 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
HTR Contact
(Left)
HR Signal
Display Board
HTR Board
HTR Contact
(Right)
6-07-01
3. Operation
Order
Part
Explanation
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
5
Display
1. The HTR board signal travels the cable to the display board.
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
Order
1
2
Part
Explanation
HTR
Handlebar Contacts
HTR
Cables
1. Clean HTR contacts.
2. Test HTR wires.
1. Inspect the HTR cable for crimps or breaks.
2. Test the HTR cable.
1. Inspect HTR board HTR contact LED.
2. If LED2 does not light, the HTR cable or contact is malfunctioning.
3. If LED2 lights but LED3 does not light, the HTR board is
malfunctioning.
4. If LED2 lights, LED4 flashes, but there is no output, the HTR board
is malfunctioning.
5. If you do not hold the handlebar but the HTR board LED4 flashes,
the HTR board is malfunctioning.
3
HTR Board
4
Cables
1. Inspect the cables from the HTR board to the display.
5
Display Board
1. Inspect the heart rate cable connections.
2. Inspect 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
Order
3. Operation
Part
1
Safety Key
Operation
1. Put the safety key in place to operate the unit.
2. In use, remove the safety key. The unit stops operating.
2
Safety Key
Board
1. Test the reed switch on the safety key board by probing on both
sides of the reed switch.
2. Normal reading with the safety key in place: short.
3. Normal reading without the safety key: open.
3
Safety Key
Cable
4
Display Board
The safety key circuit condition travels to the display via the cable.
The CPU detects the safety key situation:
1. If the circuit is a short, unit operates.
2. If the circuit 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
Order
1
2
3
3
5. Troubleshooting
Part
Troubleshooting
Safety Key
Inspect whether the Safety Key magnet attracts to metal.
Safety Key
Test whether the safety key board reed switch operates propearly.
Board
Data Cable Inspect whether the cable is connected properly.
1. Make sure the IC chip is seated properly.
Display Board
2. Inspect the 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
Fan Circuit
Board
Display Board
6-09-01
Fan
Order
1
2
3
4
3. Operation
Part
Operation
Fan Key Board Press the fan key to determine fan operation.
1. The display CPU reads the <FAN> key setting and shows the setting
Display Board on the display.
2. The fan operation includes high, medium, low and off settings.
1. The fan circuit board sends voltage to the fan according to the
display setting.
Fan Circuit
2. On the high setting, voltage output is 12 VDC.
Board
On the medium setting, voltage output is 9 VDC.
On the low setting, voltage output is 6 VDC.
On the off setting, voltage output is 0 VDC.
The fan operates according to output from the fan circuit board.
Fan
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
Order
1
2
3
4
5
5. Troubleshooting
Part
Troubleshooting
Fan Key Board Inspect the fan key board operation.
1. Inspect the display fan setting.
Display Board
2. Inspect the display.
Cable
Inspect the cable connections.
Fan Circuit
1. Inspect the fan circuit board for output voltage.
Board
Fan
1. Inspect the 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
A
E
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
A- E
AC1→Cover
Figure 3
AC to Cover
OL – no reaction
C- E
AC2→Cover
7-01-02
Testing － Motor
1. Test Configuration
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
Red -White
Red -Black
White-Black
Normal Result
0.1Ω
0.1Ω
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
Green-Red
Green-Black
Green-White
Green-Motor
Cover
Normal Result
OL
OL
OL
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
2
3
4
Power(Peak)
Torque(Rated)
Torque (Peak)
TYPE
5 HP
6.1N-m
18.2N-m
P.M.S.M
5
6
Insulation
RPM
Volts
AMBient
BRG
F
3600
230V
40°C
6204zz/6205zz
Peak Power, 5 HP
Torque Rating, 6.1 Newton-Meters
Peak Torque, 18.2 Newton-Meters
Motor type: (Permanent Magnet Synchronous
Motor)
Insulation grade: F grade (155℃)
RPM Rating: 3600 RPM
Volt rating: 230 V
Ambient temperature: 40°C
Bearing type: rear 6204, front 6205, sealed on
two sides
8
9
7-02-03
Testing － Inductor
1. Test Configuration
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
1. Test Configuration
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
CON5
110 VAC Areas
220 VAC Areas
Up ▲
White - Black
110V
220/240V
Down ▼
White - Red
110V
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
1. Test Configuration
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
1. Test Configuration
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).
Safety Key Board
Safety Key in Place
Safety Key not in Place
Voltmeter Reading
Normal reading: 0
(continuity)
Normal reading: OL (open)
3. Troubleshooting
1. If not as above, the reed switch is bad. Replace it.
7-06-02
Testing －
Telemetry Reception
1. Test Configuration
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
LED1
2. Indicator Definitions
LED
Color
Name
LED1
Red
Telemetry Indicator
LED2
Orange
LED3
LED4
Green
Red
HTR Contact
Indicator
HTR Input Indicator
Output Indicator
LED2
LED3
Explanation
Flashing indicates incoming telemetry heart rate
signal.
Lit indicates hands are holding HTR contacts.
Flashing indicates incoming HTR signal.
Each flash represents an outgoing pulse signal.
7-08-01
LED4
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 POLAR transmitter, POLAR receiver board,
is not getting to the HR board.
wires
LED2 (HTR) not
lighting
HTR handlebar is not being held or there is no detection of HTR handlebar, wire from HTR board to
a signal at the HR board.
handlebar
LED3 (HTR) not
flashing
Signal is not arriving from HTR handlebars.
LED4
(HTR+POLAR)
not flashing
POLAR receiver or HTR is not emitting a heart rate signal If all other HR board LEDs are normal,
to the display.
replace the HR board.
Display Shows
No HR Value
If HR board LEDs are normal, inspect the 3-pin cable, its 3-pin cable, connections, display board
connections, and the display board
7-08-02
HTR handlebar, cable, HR board
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:
Ground Test
Continuity Test
Test Point
A-a
A-b
Normal
Result
Continuity
OPEN
Test Point
A-GND
Frame to GND
Normal
Result
OPEN
OPEN
Fig. 2. Place the black probe on the HTR contact.
Fig. 1. Place red probe on the following:
a
GND
A
b
HTR Board 3-pin Connector
HTR Handlebar Contact
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
HTR handlebar contacts, wires
2 LED2 does not light HTR contacts not touched
handlebar to HTR board
HTR handlebar contacts, wires
3 LED3 does not light No incoming HTR signal
handlebar to HTR board
4 LED4 does not light No outgoing HTR signal
HTR board
No HR reception or processing
5 No HR on display
3-pin cable, display
at display
7-09-02
from
from
Testing － Motor Thermal Sensor
1. Test Configuration
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
Motor is not too hot;
thermal sensor is not
activated.
Motor is too hot;
thermal switch has
activated.
Normal Reading
Notes
0, continuity
Normal condition is 0,
continuity.
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
1. Test Configuration
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 the
brown 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
VDC Reading
STOP
0V
LOW
6V
MID
9V
HIGH
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
1. Test Configuration
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:
Test Wires
BLACK – WHITE
WHITE – GREEN
BLACK – GREEN
Normal Test Results
110 (or 220V)
OL, no reaction
OL, no reaction
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
7-12-02
Testing－ Display Board Power Supply
1. Test Configuration
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
VBB
VCC
Normal Reading
+16V
+5V
3. Troubleshooting
3-1. Turn on unit power. There is no power reading.
Inspect A. Inspect cable connections.
B. Inspect drive board.
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.
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.
A
B
8-1-1
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.
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
Counterclockwise
loosens belt
Clockwise
tightens belt
8-1-2
B
T670/T680 Treadmill Walk Belt Tightness Adjustment
Step 4. If too loose, turn adjustment screws on both
Step 3: Test belt tightness by lightly
sides equally one half to one turn. If too tight,
bearing against it.
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 2.
Attach front roller set
block.
Step 1. If the gap size
differs from top to bottom,
adjust the top screw.
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.
8-2-3
2. Job complete: a straight walk belt.
T670 AC Motor Incline Software Calibration Procedure
1. Test Configuration
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 2. Detach CON8 incline calibration wire
Step 1. Set the unit onto a block.
from 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.
8-4-1
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.
8-4-2
Step 9. Remove the AC incline motor set.
Step 10. Set the distance between holes to 264
mm.
264 mm
Step 12. Press the INC UP key to 2% and stop.
Let unit operate.Press the INC DN key to 0% to
complete calibration.
Step 11. After calibrating the incline,
reinstall the incline. Connect wires.
8-4-3
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.
8-4-4