T680E Troubleshooting Guide 2011-04-20
Display Compartment Components
LCD
module
Fan
board
Control board
HTR board
Motor Compartment Components
Filter
AC
motor
Incline
motor
Drive board
1. Error Messages and their Troubleshooting
ERROR_1_1_：Servo motor encoder abnormality – Turn off power, wait briefly, then turn on power.
A. Restart unit.
B. Inspect encoder cable connections.
C. Replace the servo motor.
D. Replace the drive board.
ERROR_1_2_：Servo motor excessive heat warning; unit operates at half speed.
A. Inspect the thermal sensor cable connection at the thermal sensor and the drive board.
B. The servo motor current is excessive.
C. Replace the drive board.
D. The walk belt is worn or too tight.
E. The treadmill has been used too long. Turn it off for 30 minutes.
ERROR_1_3_：Servo motor sped excessively; restart the unit.
A. Restart the unit.
B. Inspect the encoder cable connection at the drive board.
C. Replace the drive board.
D. Replace the servo motor.
ERROR_2_1_：IGBT excessive current; Restart the unit.
A. Restart the unit.
B. Inspect the servo motor cable connection at the drive board.
C. Replace the drive board.
D. Inspect the servo motor coil for an electrical open.
E. Replace the servo motor.
ERROR_2_2_：IGBT excessive heat; Unit operates at half speed.
A. Inspect the servo motor cable on the drive board.
B. Replace the drive board.
C. Inspect the servo motor coil for an electrical open.
D. Replace the servo motor.
ERROR_3_1_：Incline motor calibration abnormality.
A. Inspect the incline calibration cable connection on the drive board.
B. Inspect the incline motor calibration switch.
C. Replace the drive board.
ERROR_4_1_：Power switch is off.
ERROR_4_2_：Power supply is too low; Once power supply is normal, restart the unit.
A. Inspect exterior power supply voltage.
B. Replace the drive board.
ERROR_4_3_：Power supply voltage is too high; Once power supply is normal, restart the unit.
A. Inspect exterior power supply voltage.
B. Replace the drive board.
ERROR_8_1_：Communication abnormality occurred at start up.
A. Inspect the display IC installation.
B. Inspect cable connections.
C. Replace the drive board.
ERROR_8_2_：Communication abnormality occurred after start up.
A. Inspect the display IC installation.
B. Inspect cable connections.
C. Replace the drive board.
2. Troubleshooting - Unit Will Not Start.
Order Part Troubleshooting
1 Power outlet Inspect whether the power cord is in the outlet securely.
2 Filter Inspect the filter wire connections.
3
Fuse and fuse
holder
1. Inspect the fuse holder cable connection.
2. Inspect the fuse holder spring clip connection.
3. Inspect whether the fuse is burnt.
4 Power switch 2. If the LED is not lit, inspect the power cord and filter cable connections.
1. Put the power switch to “1”. Inspect whether the switch LED lights.
3. Replace the power switch.
4
AC1, AC2
power supply
Inspect the CN4, CN5 connections on the EAC drive board.
5 Drive board Inspect the CN4, CN5 connections on the EAC drive board.
6 Drive board Replace the drive board.
3.Troubleshooting - Motor Does Not Operate.
Order Part Troubleshooting
1 Display board
1. Press on the display board IC to secure it.
2. Inspect the cable and its connections from the display to the drive board.
2 Cables 2. Inspect whether cables are pinched.
1. Inspect the cable connections from the display board to the drive board.
3. Replace the cables as a test.
3
Inductor（220V）
Reconnect filter wires.
4 Encoder
1. Reconnect CN 3, CN5 cable connections.
2. Replace the encoder as a test. Is the encoder malfunctioning?
5 Drive board
1. Inspect cable connections on the drive board, including the inductor (220V) cable
connections.
2. Replace the drive board as a test. Is the drive board malfunctioning?
6 Motor
1. Inspect the CN 6 cable connection on the drive board.
2. Replace the motor as a test. Is the motor malfunctioning?
4. Troubleshooting – Incline Will Not Operate Up or Down
Order Part Troubleshooting
1 Incline motor 1. Inspect whether the incline motor has an electrical open.
2 Drive board
2. Inspect whether the 3.15A incline fuse F3 on the drive board is burnt? If so, replace it.
1. Inspect the CN1(INCLINE POWER) cable connection to the drive board.
3. Inspect the power to the incline motor. When LED2_UP or LED3_DN lights, is there
voltage output?
3 Cable
2. Inspect whether the cable is pinched or an electrical open.
1. Inspect cable connections.
3. Replace the cable as a test.
4 Display
Inspect whether, when you press INCL<▲>/<▼> and the incline values on the display
change, LED2_UP or LED3_DN on the drive board lights.
5. Troubleshooting - TFT LCD Screen Does Not Light Up
Order Part Troubleshooting
1
TFT LCD
driver board
1. Inspect the cable connections.
2. Inspect whether the U3 program IC is installed properly, or replace the IC as a test.
3. Replace the TFT LCD driver board as a test.
2 30-pin cable
1. Inspect cables for bad connections or an electrical open.
3 TFT LCD panel
2. Inspect cable connections and look for an electrical open.
3. Replace the TFT panel as a test.
4 TUNER board
1. Inspect the TV terminal and exterior TV signal cable connections.
2. Inspect cables for bad connections or an electrical open.
5 20-pin adapter
Inspect the adapter connections and look for an electrical open.
6 AV board
1. Inspect the AV board and exterior DVD signal cable connections.
2. Replace the AV board as a test.
7 Cable Inspect cables for bad connections or an electrical open.
8 5-pin cable Inspect cables for bad connections or an electrical open.
9 Inverter board
1. Inspect CN1, CN2 cable connections.
2. Replace the inverter board as a test.
10 2-pin cable
Inspect cables for bad connections or an electrical open.
AV board
6. Troubleshooting – Safety Key Does Not Operate
Order Part Troubleshooting
1 Safety key Inspect the safety key magnet.
2 Safety key board Test the safety key board reed switch function.
3 Cable Inspect cable connections.
4 Display board
1. Inspect whether the program is installed properly.
2. Inspect the safety key circuit condition.
7. Troubleshooting – Telemetry (Wireless) Heart Rate Malfunction
Order Part Troubleshooting
1 Telemetry heart
rate transmitter
1. Inspect the transmitter.
2. Replace the transmitter as a test.
2 Telemetry heart
rate receiver
1. Inspect the heart rate receiver board placement.
2. Inspect whether the heart rate receiver LED1 flashes.
3 3-pin heart rate
cable
Inspect cable connections.
4 Display board Inspect the 3-pin heart rate cable connection.
8. Troubleshooting – HTR Heart Rate Malfunction
Order Part Troubleshooting
1 HTR contact pads
1. Clean HTR contact pads.
2. Test HTR cables.
2
HTR
cable
1. Inspect the HTR cable for breaks or screws punctures.
2. Test the HTR cable.
3 HTR board
1. Inspect the HTR board contact indicator LED.
2. If LED2 is not lit, there is an issue with the HTR cable or contact grips.
3. If LED2 is lit but LED3 does not flash, the HTR board has an issue.
4. If LED2 is lit, LED4 flashes, but there is no output, the HTR board has an issue.
5. If no one touches the HTR contact pads but LED4 on the HTR board flashes, the
HTR board has an issue.
4 Heart rate cable Inspect cable connections from the HTR board to the display board.
5 Display board
1. Inspect the cable connections.
2. Inspect IC U4 pin connections on the display board.
9. Troubleshooting – Fan Operation Malfunction
Order Part Troubleshooting
1 Keyboard Inspect the fan operation on the keyboard.
2 Display board
1. Inspect whether the fan setting on the display was normal.
2. Inspect the display.
3 Cable Inspect cable connections.
4 Fan circuit board Measure the fan circuit board output voltage to the fan.
5 Fan Test the fan for an electrical open.
10. Troubleshooting – Treadmill Operates with Abnormal Noise
Order Part Troubleshooting
1 Walk belt 2. Inspect whether the walk belt is worn.
1. Inspect whether the walk belt tends to one side.
3. Inspect whether lubrication is needed between the walk deck and walk belt.
2
Front and rear
roller
Inspect whether the front or rear roller produces an abnormal sound.
3 Walk belt guide
1. Inspect whether the walk belt guide surface is worn.
2. Inspect whether the walk belt guide does not spin easily.
4 Walk deck
1. Inspect whether the walk belt is worn or torn.
2. Inspect whether the walk belt and deck requires lubrication.
Rear roller
Front roller
Walk belt
/