Troubleshooting
Model:
C520R/C531R
Malfunction: No RPM value
Circumstance: 1. No RPM value appears.
2. Pedal the bike; the display shows no reaction.
Possible causes: 1. Reed switch and magnet
2. Wire connections
Troubleshooting: 1. Inspect the reed switch and magnet.
2. Inspect all cable connections.
3. Inspect the drive board CLK signal
indicator LED.
3-3-1
Bridge
board
Display
board
Drive board
Reed switch
Reed switch and magnet
Inspect the CLK
indicator on the drive
board
When the reed
switch and magnet
come into contact, the
LED lights.
