2-1-1. Electronic Malfunction Troubleshooting Table - C570R/C570U
Malfunction
Circumstance
Inspection Items
Replace
Components
Notes
Cannot
turn on unit
When the display
is not lit, I pedal,
but the display
doesn’t light.
1. Inspect all cable connections.
2. Inspect alternator output voltage.
3. Inspect drive board fuse and power indicator LEDs.
4. Inspect battery voltage and connections.
5. Inspect display cable connections.
1. Drive
board fuse;
drive board
2. Alternator
Cannot
turn on unit
Display lights
while I pedal, but
not when I don’t
pedal.
1. Inspect or measure battery voltage.
2. Inspect the drive board fuse.
3. Inspect cable connections.
1. Battery
No RPM
value
When I pedal,
there is no RPM
value.
1. Inspect cable connections
2. Inspect whether the distance between the optic sensor
and sticker is 3-8mm.
3. Inspect the optic sensor LED on the drive board.
4. Replace the optic sensor or drive board.
1. Optic
sensor
2. Drive
board
No
resistance
1. When I pedal,
there is no
resistance.
1. Can the alternator start the unit?
2. Inspect the alternator fuse on the drive board.
3. Inspect whether the RPM value appears when you pedal.
If not, inspect the optic sensor signal.
4. Measure output to the electro-magnet from the drive
board.
5. Inspect electro-magnet wire connections.
1. Optic
sensor
2. Drive
board
Resistance
is
excessive
I press keys to
adjust resistance,
but resistance
remains very
heavy.
1. Inspect wire connections.
2. Replace the drive board.
1. Drive board
2-1-1