Troubleshooting
Model: T621
Malfunction: ERR1
Circumstance: Press the speed up key. Motor rotates. ERR1 appears.
Possible cause: 1. Motor rotates
optic sensor malfunctions
Troubleshooting: 1. Inspect all cable connections.
2. Inspect whether the LED6 indicator on drive board flashes.
If not, the optic sensor is malfunctioning. Either clean the
optic sensor sensor head or replace the optic sensor.
3. If the LED6 indicator lights, inspect the cable connections and
main IC connections.
3-7-2
Drive board
Display board
Sensor
Motor
motor
LED6 MC indicator
Optic sensor
Summary of Contents for T621
Page 1: ...T621 Repair Manual Electronics ...
Page 4: ...1 1 Product Picture T621 1 1 1 ...
Page 5: ...1 2 Display T621 1 2 1 ...
Page 6: ...1 3 Component Placement T621 Display 1 3 1 Telemetry heart rate receiver board Display board ...
Page 7: ...1 3 Component Placement T621 Display 1 3 2 HTR board Bridge board Soft keys Safety key board ...
Page 11: ...1 5 Connections T621 Bridge Board 1 5 2 To safety key board To HTR board To display ...