Troubleshooting
Model: C570R
Malfunction: No resistance.
Circumstance: I pedal on the bike, but there is no resistance.
Possible causes: 1. Display has no RPM value.
2. There is no output voltage from the alternator.
3. Drive board is defective.
Troubleshooting: 1. Inspect whether the display receives the RPM
signal.
2. Inspect whether the alternator can start the unit.
3. Inspect all cable connections.
4. Inspect the F2 fuse on the drive board. Measure
alternator output voltage. Or replace the drive board as
a test.
5. Inspect electro-magnet wire connections.
3-4-1
Drive
board
Display
board
Sensor
Alternator
Electro-magnet
Drive board
To optic sensor
Electro-magnet voltage
Level
Voltage
（
V
）
LEVEL 1
2.1
LEVEL 10
9.1
LEVEL 20
16.0
F2 alternator fuse
