Troubleshooting
Model: C520R/C531R
Malfunction: No start up (alternator)
Circumstance: Pedal on the bike; the display does not light.
Possible causes: 1. Cables are not connected.
2. Drive board malfunction
Troubleshooting: 1. Inspect all cable and bridge board connections.
2. Inspect alternator wire connections.
3. Inspect cable connections, fuse F1, and PWR
LED at the drive board.
4. Replace the drive board.
5. Inspect the display IC pin connections.
3-1-1
Drive
Board
Display
board
Alternator
Bridge board
EAC 驅動器組
F1 fuse
Power indicator
Inspect bridge
board wire
connections
Inspect alternator
wires
Inspect the
program IC
Speed sensor
