Dyaco ST300-YT42 User manual

S ST T3 30 00 0- -Y YT T4 42 2 T Tr re ea ad dm mi il ll l
S
Se er rv vi ic ce e M Ma an nu ua al l

WARNING:
ALWAYS UNPLUG THE TREADMILL FROM THE ELECTRICAL
OUTLET BEFORE SERVICING THE UNIT.

S
Se er rv vi ic ce e M Ma an nu ua al l
T Ta ab bl le e o of f C Co on nt te en nt ts s
T
Ta ab bl le e o of f C Co on nt te en nt ts s 1 1
TABLE OF CONTENTS
Table of Contents...................................................................... 1
Table of Figures ........................................................................ 3
Description................................................................................ 4
AE LECTRICAL C ONFIGURATION ....................................... 4
1. ST300-YT42 Treadmill components ............................ 4
BG ENERAL I NFORMATION ................................................. 5
1. Console ......................................................................... 5
2. Main controller.............................................................. 5
3. Treadmill motor ............................................................ 5
Operation................................................................................... 7
AW INDOW D ISPLAY M ODE ............................................... 7
1. OFF Mode..................................................................... 7
2. READY Mode .............................................................. 7
3. SLEEP Mode ................................................................ 7
4. RUN Mode.................................................................... 7
BF UNCTION ........................................................................ 8
1. SPEED .......................................................................... 8
2. INCLINE....................................................................... 8
3. TIME............................................................................. 8
4. DISTANCE................................................................... 9
5. CALORIES ................................................................... 9
6. PULSE .......................................................................... 9
7. LAPS............................................................................. 9
8. SCAN............................................................................ 9
CF UNCTION B UTTON I N M AIN M ODE ............................. 10
1. READY MODE .......................................................... 10
2. RUN MODE ............................................................... 11
DC ALIBRATION P ROCEDURE ........................................... 12
1. Calibration................................................................... 12
Troubleshooting ...................................................................... 13
1. General........................................................................ 13

S
Se er rv vi ic ce e M Ma an nu ua al l
T Ta ab bl le e o of f C Co on nt te en nt ts s
T
Ta ab bl le e o of f C Co on nt te en nt ts s 2 2
2. Troubleshooting Matrix .............................................. 14
3. controller debugging form .......................................... 21
Diagrams and Schematics ....................................................... 22
APPENDIX A......................................................................... 27
1. TREADBELT ADJUSTMENT.................................. 27
APPENDIX B ......................................................................... 29
1. TREADMILL LUBRICATION ................................. 29
APPENDIX C ......................................................................... 30
1. RESET SWITCH RESETTING ................................. 30
APPENDIX E ......................................................................... 31
1. SPEED SENSOR ADJUSTMENT............................. 31
2. SERVICE QUESTIONS............................................. 31

S
Se er rv vi ic ce e M Ma an nu ua al l
T Ta ab bl le e o of f F Fi ig gu ur re es s
T
Ta ab bl le e o of f F Fi ig gu ur re es s 3 3
TABLE OF FIGURES
Figure 1 Operational Flowchart ............................................... 6
Figure 2 Console Layout........................................................ 22
Figure 3 Mechanical Layout .................................................. 22
Figure 4 Main Controller information & voltages................. 23
Figure 5 Function JK1 connector on Main Controller........... 23
Figure 6 Wiring Diagram....................................................... 25
Figure 7 Schematic Diagram ................................................. 26
Figure 8 If Treadbelt slips...................................................... 27
Figure 9 If tread belt shifts too far to the Right ..................... 27
Figure 10 If tread belt shifts too far to the Left...................... 28
Figure 11 Resetting Reset switch........................................... 30
Figure 12 Fuse replacement................................................... 31

S
Se er rv vi ic ce e M Ma an nu ua al l
D De es sc cr ri ip pt ti io on n
D
De es sc cr ri ip pt ti io on n 4 4
DESCRIPTION
A E LECTRICAL C ONFIGURATION
Note: Electrical servicing of this treadmill is limited to board
level replacement.
1. ST300-YT42 TREADMILL COMPONENTS
a) SFAETY KEY:
To fits on the Console that activate all functions. If no
safety key, console can not be controlled.
b) Console:
Interface that controls all functions of the treadmill.
c) Main controller:
The circuit board consist of the DC power supply for
consol e、 incline drive r and DC motor driver, link the
console to output appropriate voltages for motor that
control the treadmill functions.
d) Treadmill motor:
This is a variable speed for DC motor. To control the 0 –90
voltages on the main controller, it can to increase or
decrease speed of running belt.
e) Incline motor:
This is an ac motor. User can to control variable
elevation by console within main controller.

S
Se er rv vi ic ce e M Ma an nu ua al l
D De es sc cr ri ip pt ti io on n
D
De es sc cr ri ip pt ti io on n 5 5
B G ENERAL I NFORMATION
1. CONSOLE
a) This is 7.5 inch multi windows LCD. It is include 5 data format,
a track, one dot matrix (8x20) and one message windows (12
characters).
2. MAIN CONTROLLER
a) Include power supply 、 motor driver control circuit and
incline control circuit.
3. TREADMILL MOTOR
a) It’s a variable speed that be controlled on DC motor.
b) Have three wires red, black and green.
c) Has three wires red, black and green.
d) If there is DC voltage on the Red wire (M+) the treadmill
motor will turn clockwise.
e) If there is DC voltage on the Black wire (M-) the treadmill
motor will turn counter-clockwise
f) The higher the voltage the faster the motor turns.
g) The green wire is grounding.

S
Se er rv vi ic ce e M Ma an nu ua al l
D De es sc cr ri ip pt ti io on n
D
De es sc cr ri ip pt ti io on n 6 6
Figure 1 Operational Flowchart

S
Se er rv vi ic ce e M Ma an nu ua al l
O Op pe er ra at ti io on n
O
Op pe er ra at ti io on n 7 7
OPERATION
A W INDOW D ISPLAY M ODE
1. OFF MODE
a) When pull the safety key or users press the STOP Button on the
console, the treadmill enters the OFF Mode and all windows
will appear blank.
2. READY MODE
a) When the treadmill is ON and SAFETY KEY is inserted in
console, the message window will show program name.
b) In READY Mode, if user doesn’t press any button for 30
minutes it will automatically turn off (blank out) enter SLEEP
MODE.
3. SLEEP MODE
a) In SLEEP Mode, if any buttons are pressed then the treadmill
enters READY Mode.
4. RUN MODE
a) In RUN Mode, pressing the “STOP” button and pull out the
safety key that will cause the treadmill stop instantly and enter
OFF Mode.

S
Se er rv vi ic ce e M Ma an nu ua al l
O Op pe er ra at ti io on n
O
Op pe er ra at ti io on n 8 8
B F UNCTION
1. SPEED
a) Display the current speed in mile per hour.
b) DISPLAY range is 0.0 to 99.9 MPH.
c) WORK range is 0.5 to 12.0 MPH.
d) Press “FAST” or ”SLOW” to adjust speed, each increment and
decrement is 0.1 MPH.
2. INCLINE
a) Display the incline position from 0 to 15.
b) DISPLAY range is 0 to 999.
c) WORK range is 0 to 15.
d) INCLINE preset value is 0 to 15.
e) Press “UP” or ”DOWN” to adjust incline, each increment and
decrement is 1.
3. TIME
a) TIME is either COUNT UP or COUNT DOWN. System preset
is COUNT UP; if user sets the time then timer is COUNT
DOWN.
b) DISPLAY range is 0:00 to 99:99.
c) WORK range is 0:00 to 99:59.
d) COUNT DOWN setup range is 10:00 to 99:00.
e) When TIME is set, the count will go to zero.
f) In RUN Mode, press “START” button to save value of time
and enter “RUN” Mode again that value will continue count up
time.

S
Se er rv vi ic ce e M Ma an nu ua al l
O Op pe er ra at ti io on n
O
Op pe er ra at ti io on n 9 9
4. DISTANCE
a) In RUN Mode, DISTANCE preset is COUNT UP.
b) DISPLAY range is 0.00 to 99.99.
c) WORK range is 0.0 to 99.99.
5. CALORIES
a) In RUN Mode, CALORIES preset is COUNT UP.
b) DISPLAY range is 0 to 999.
c) WORK range is 0 to 999.
6. PULSE
a) In RUN Mode, DISPLAY range is 0 to 999.
b) WORK range is 50 to 220.
c) If the treadmill doesn’t have a signal for 8 seconds then value
will become “---”.
7. LAPS
a) Display your current lap 0.25 miles.
8. SCAN
a) Display will automatically shift every 5 seconds.

S
Se er rv vi ic ce e M Ma an nu ua al l
O Op pe er ra at ti io on n
O
Op pe er ra at ti io on n 1 10 0
C F UNCTION B UTTON I N M AIN M ODE
1. READY MODE
a) SAFETY KEY: Fit safety key in right position to power on the
computer. When safety key is pulled away from it’s position,
the computer will be automatically shut down.
b) START button: When press “START” button, there will be 3
warning beep, then machine starts running. In MANUAL,
treadmill starts at MIN SPEED and treadmill starts at default of
speed and incline in PROGRAM.
c) In running a workout, when press the “Stop” button once,
pause is executed. If press “Stop” button a second time, the
program will end and a workout summary will be displayed. If
press “Stop” button a third time, the console will return to the
idle mode (start up) screen. If the Stop button is held down for
more than 3 seconds the console will reset.
d) ENTER button: Press “ENTER” button to change each function.
MANUAL can to set using time, Preset PROGRAM can to set
using time and max speed, Heart Rate Control 1~2 can to set
time and target heart rate. User Program 1~2 can set time,
speed and incline profiles.
e) PROGRAM button: Press PROGRAM button to select manual,
preset program, user program and heart rate control program.
f) FAST button: If user doesn’t enter a setting then this button is
non-functional.
g) SLOW button: If user doesn’t enter a setting then this button is
non-functional.
h) UP button: Press “UP” button to increase your incline and each
increase is 1 level.
i) DOWM button: Press “DOWN” button to decrease your incline
and each decrease is 1 level.
j) FAN button: It can to control power ON/OFF for the fan.

S
Se er rv vi ic ce e M Ma an nu ua al l
O Op pe er ra at ti io on n
O
Op pe er ra at ti io on n 1 11 1
2. RUN MODE
a) SAFETY KEY: When safety key is pulled away from it’s
position, the computer will be automatically shut down.
b) MANUAL, HILL, FATBURN, CARDIO, STRENGTH,
INTERVAL, USER 1, USER 2, HR 1 and HR 2 buttons:
above mentioned buttons are non-functional.
c) STOP button: press “STOP” button to stop treadmill.
d) START button: non-functional.
e) ENTER button: to display exercise data.
f) In “SCAN” mode, display automatically shifts every 5 seconds.
g) FAST button: Press the button to increase your speed and each
increase is 0.1mph/kph. If button is pressed continuously then
speed increases to MAX SPEED quickly.
h) SLOW button: Press the button to decrease your speed and
each decrease is 0.1mph/kph. If button is pressed continuously
then speed decreases to MIN SPEED quickly.
i) UP button: Press the button to raise position and each increase
is 1, the maximum incline position is 15.
j) DOWN button: Press the button to lower position and each
decrease is 1, the minimum incline position is 0.
k) Fan button: It can to control power ON/OFF for the fan.

S
Se er rv vi ic ce e M Ma an nu ua al l
O Op pe er ra at ti io on n
O
Op pe er ra at ti io on n 1 12 2
D CALIBRATION PROCEDURE
1. CALIBRATION
a) Turn on power.
b) First, to put safety key on right position, then Press “START”
and “FAST” button at the same time.
c) The screen will to show” FACTORY SETTING PRESS
ENTER” in MESSAGE window.
d) Km/Mile Mode: Press “ENTER” to decide the unit, the
message window to display” ENGLISH”, or press “FAST” or
“SLOW” button to change to metric. Default is imperial.
e) Set wheel size: Press “ENTER” button to set “WHEEL SIZE”
and in “DISTANCE” window will display 3.01(default). The
message window will display “ADJUST WHEEL SIZE THEN
PRESS ENTER”, use “FAST” or “SLOW” key to adjust value.
f) Set Min. speed: Press “ENTER” button to set the minimum
speed that will display 0.5MPH in the SPEED window.
Message window will to display” ADJUST MIN SPEED
THEN PRESS ENTER”.
g) Set Max. speed: Press “ENTER” button to set the high speed
that will display 12.0 MPH in speed window. Message window
will display ”ADJUST Max SPEED THEN PRESS ENTER”.
h) Set Max. elevation: In incline window displays “MAX
ELEVATION” （ default:15 ） and message window displays
“ADJUST MAX ELEVATION THEN PRESS START TO
CALIBRATE”.
i) Press “FAST/SLOW” buttons to adjust the setting values.
j) After calibrating, computer will reset then enter “READY
MODE”.

S
Se er rv vi ic ce e M Ma an nu ua al l
T Tr ro ou ub bl le es sh ho oo ot ti in ng g
T
Tr ro ou ub bl le es sh ho oo ot ti in ng g 1 13 3
TROUBLESHOOTING
WARNING:
ALWAYS UNPLUG THE TREADMILL FROM THE ELECTRICAL
OUTLET BEFORE SERVICING THE UNIT.
1. GENERAL
a) Do a visual check of all wiring and connections looking for
chafed wires or lose connections.
b) Make sure any wiring is safely positioned and/or secured away
from moving parts.
c) If you find a fuse blown on a circuit board replace the circuit
board.

S
Se er rv vi ic ce e M Ma an nu ua al l
T Tr ro ou ub bl le es sh ho oo ot ti in ng g
T
Tr ro ou ub bl le es sh ho oo ot ti in ng g 1 14 4
2. TROUBLESHOOTING MATRIX
Condition Reason Solve
When turn on power,
ON/OFF switch isn’t lit.
1 Power cord isn’t plugged into outlet.
2 Power cord isn’t plug into unit.
3 The voltage of outlet is too low.
4 Plug or connector of power cord is open.
5 Connector of power cord is broken.
6 Connecting cable disconnected.
7 Breaker tripped.
8 Breaker is broken.
9 ON/OFF switch is broken.
1 Plug the power cord into outlet.
2 Plug the power cord into unit.
3 Check the voltage of outlet.
4 Replace power cord.
5 Replace power cord.
6 Check if wire is disconnected, connect it
again.
7 Press the small red button to return to
original status.
8 Replace breaker.
9 Replace A.C switch.
After turning on power,
treadmill has a popping
sound.
1 Incorrect input power, varistor is blown broken on
controller.
1 Check the voltage of power is 120V. Replace
controller.
When insert safe key, no
display on monitor.
1 Haven’t switch ON/OFF switch.
2 Insert the Safe key on wrong position.
3 12PIN Computer connector not plugged in properly.
4 12PIN computer cable is broken.
1 Switch the A.C switch.
2 Insert the safe key on right position.
3 Please check the wire and connect again.
4 Replace 12PIN computer cable.

S
Se er rv vi ic ce e M Ma an nu ua al l
T Tr ro ou ub bl le es sh ho oo ot ti in ng g
T
Tr ro ou ub bl le es sh ho oo ot ti in ng g 1 15 5
5 Fuse on controller is blown.
6 Varistor on controller is blown.
7 safety switch of console is broken. (open)
8 Other components are faulty.
5 Replace fuse or controller.
6 Replace varistor or controller.
7 Replace safety switch or console.
8 Replace console.
With no safe key but
treadmill could display but
can’t operate
1 safety switch of console is not set. 1 Check safety key on console.
When press “START”,
treadmill doesn’t start.
1 Motor M+ or M- wire isn’t connected into right position.
2 Controller is broken. (No power to motor)
3 Motor is broken.
4 Treadmill controller shut down and LED would be ON.
5. Console is broken.
1 Please check and plug again.
2 Replace controller or MOSFET IRFP 260 and
add the Silicone Heat Sink Paste suitably.
3 Replace motor or check the wire and
connector if it was broken.
4 Turn off the AC switch and turn on power
again.
5. Use another console to check again, replace it.
Treadmill stops or shuts off
by itself.
1 House breaker tripped.
2 Treadmill breaker tripped.
3 Treadmill controller fuse is broken.
4 Treadmill controller shut down and LED would be ON.
1. Reset it.
2. Reset treadmill breaker.
3. Replace with new fuse
4. Turn off the AC switch and turn on power
again.
After removing safe key, 1. Console is broken. 1. Replace console.

S
Se er rv vi ic ce e M Ma an nu ua al l
T Tr ro ou ub bl le es sh ho oo ot ti in ng g
T
Tr ro ou ub bl le es sh ho oo ot ti in ng g 1 16 6
treadmill can’t stop.
LCD not bright, incomplete
or imperfect.
1. LCD light is broken.
2. Power to console too low.
1. Replace with new LCD or console.
2. Check AC power is 120V.
3. Check power to console.
4. Replace lower controller.
LCD displays not bright,
incomplete or imperfect.
1. LCD displays are broken. 1. Replace with new console and calibrate it.
When press “START”
button to start treadmill,
running belt isn’t running
and window displays “LS”
error message after 8
seconds.
1. Controller experienced unusual shut down; the S_D light
will be always bright. (Controller debugging form)
2. Motor wires (red, black) aren’t plugged into controller.
3. Computer cables not connected properly.
4. Computer cables are broken or damaged.
5. Motor belt is broken.
6. Controller is broken.
7. Motor is broken.
8. Console is broken.
1. Turn off power and reset the treadmill.
2. Plug wires again.
3. Plug the wire again on controller, connector
and console.
4. Replace with new wires.
5. Replace with new motor belt.
6. Replace with new controller.
7. Replace with new motor.
8. Replace with new console.
When press “START”
button to start treadmill,
running belt is running but
window displays “LS”
error
message after 8 seconds.
1. Misalignment between speed sensor and magnet.
2. The 12C508A was broken on the controller.
3. Magnet missing.
4. Magnet de-magnetized.
5. Speed sensor cable is broken. (short)
1. Adjust the distance to 5mm between
speed sensor and magnet.
2. Replace “12C508” or controller.
3. Replace a magnet.
4. Use metal material to test the magnet.

S
Se er rv vi ic ce e M Ma an nu ua al l
T Tr ro ou ub bl le es sh ho oo ot ti in ng g
T
Tr ro ou ub bl le es sh ho oo ot ti in ng g 1 17 7
*Speed sensor cable was
broken,(open) console can’t
receive the speed.
6. 12 PIN computer cable connected improperly.
7. 12 PIN computer cable is broken.
8. Console is broken.
5. Replace sensor cable.
6. Plug the cable again on controller,
connector and console.
7. Gray and purple wires got damage,
replace the wires.
8. Replace console.
SPEED windows display is
not 0.5 to 12.0 mph
Monitor is not calibrated. Calibrate the console
INCLINE windows display
is not 0 to 15
1 Console is not calibrated. 1 Calibrate the console.
The speed of the belt
doesn’t match console
display.
1. Console is not calibrated. 1.Calibrate the console
The incline position doesn’t
match console
1 Console is not calibrated.
1 Calibrate the console.
INCLINE window displays
“E2”.
1 Position sensor value of incline motor is wrong. 1 Turn off the AC switch and turn on power
again.
2. Calibrate the console.
3. Replace the incline motor.
INCLINE window displays
“E2” during training.
1 Position sensor value of incline motor is wrong. 1 Turn off power and reset the treadmill.
2. Calibrate the console.
3. Replace the incline motor.

S
Se er rv vi ic ce e M Ma an nu ua al l
T Tr ro ou ub bl le es sh ho oo ot ti in ng g
T
Tr ro ou ub bl le es sh ho oo ot ti in ng g 1 18 8
Erratic pulse display. 1. Another chest belt in use around treadmill.
2. Other magnetic field disturbance.
3. Receiver is broken.
1. Check for other chest belt use around
treadmill.
2. Change the position or direction of treadmill
.
3. Replace with new receiver.
After pressing “START”
button, the treadmill stop
immediately.
Controller was broken. Replace with new controller and calibrate it.
FAST/SLOW button of
SPEED ADJUSTMENT
SWITCH can’t be used.
Speed button just can press
FAST, can’t press SLOW.
Speed button just can press
SLOW, can’t press FAST.
1 The connector of SPEED CABLE (UPPER) and
CONSOLE not connected properly.
2 The connector of SPEED CABLE (UPPER) and SPEED
ADJUSTMENT SWITCH W/CABLE not connected
properly.
3 The connector of SPEED CABLE (UPPER) or
SPEED ADJUSTMENT SWITCH/W/CABLE is
damaged.
4. Button of SPEED ADJUSTMENT SWITCH is broken.
5. The connector of SPEED CABLE (UPPER) or SPEED
ADJUSTMENT SWITCH/W/CABLE is damaged.
6. The connector of SPEED CABLE (UPPER) or SPEED
ADJUSTMENT SWITCH/W/CABLE is damaged.
1. Connect cables again.
2. Connect cables again.
3. Connect cable again.
4. Replace with new buttons.
5. Replace with new cable.
6. Replace with new cable.
UP/DOWN button of 1 The connector of INCLINE CABLE (UPPER) 1 Connect the wires again.