Troubleshooting
Model: C520R/C531R
Malfunction: No resistance
Circumstance: Pedal on the bike; there is no resistance.
Possible causes: 1. Cables are not connected.
2. Drive board is defective.
Troubleshooting: 1. Inspect all cable connections.
2. Inspect whether an RPM value appears when you pedal the bike. If not, inspect the reed switch
and magnet.
3. Inspect whether unit starts via the alternator.
4. Inspect the drive board fuse. Measure voltage from the drive board to the magnet.
5. Inspect the electro-magnet wires
and whether the electro-magnet has
attracts metal.
3-4-1
Drive board
Display board
Alternator
Reed switch
Electro-
magnet
Reed switch
F1 fuse
Inspect drive board
CON2 voltage:
LEV 5
6.3V
LEV 15
10V