2-1. Electronic Malfunction Troubleshooting Table – T611
Malfunction
Circumstance
Inspection and test points
Components to
replace
Notes
Incline
position is
not correct.
Incline position on display
differs from actual position.
1. Inspect all cable connections.
2. Inspect drive board incline VR voltage across red and green
wires. Normal: 0% = 1.20 VDC, 15% = 3.57 VDC. If not,
recalibrate the incline VR.
3. If VR voltage fluctuates greatly, the VR is bad. Replace the VR.
If the VR voltage is correct but the height is incorrect, replace
the display board.
1. VR
2. Display board
Key
malfunction
Key does not operate or
operates continually.
1. Inspect the soft key connection.
2. If the <program> or <change> key is bad, replace the upper
soft keys on the display.
3. If other keys malfunction, replace the lower soft keys on the
display.
1. Soft keys
(upper)
2. Soft keys
(lower)
ERR 1
Motor does not rotate, ERR
1 appears.
1. There is no power to the motor; the motor cannot operate.
2. Inspect the motor brushes.
3. Measure voltage from the drive board to the motor.
If there is no voltage, replace the drive board. If there is voltage,
inspect the following:
a. transformer voltage.
b. whether the EMG indicator lights.
c. whether IGBTs have an electrical short. Replace the drive
board.
4. Inspect motor brushes or the commutator.
1. Drive board
2. Motor brushes,
motor
ERR 1
Motor operates, ERR 1
appears.
1. The program did not detect the optic sensor signal.
2. Inspect the CLK indicator on the drive board.
a. If the CLK indicator is not lit, clean or replace the optic sensor.
b. If the CLK indicator lights normally, inspect the data cable from
the display to the drive board. Re-install the display IC.
1. Optic sensor
ERR 3
Display speed differs from
actual speed.
1. Inspect KPH/MPH setting.
2. Inspect the optic wheel teeth.
3. Replace the optic sensor.
4. Replace the drive board.
1. Optic sensor 2.
Drive board
2-1-2
Summary of Contents for T611
Page 1: ...T611 Repair Manual Electronics...
Page 4: ...1 1 Product Picture T611 1 1 1...
Page 5: ...1 2 Overlay T611 1 2 1...
Page 7: ...1 3 Connections T611 Bridge Board 1 3 2 To Safety key board HTR board Soft key Bridge board...
Page 11: ...1 5 Connections T611 Bridge Board 1 5 2 To Safetykey board To HTR board To Display...
