SportsArt Fitness C570R Operating instructions

C570R Repair Manual (Electronics)

Table of Contents
1-1-1. Product Picture - C570R
1-2-1. Display Picture - C570R/C570U
1-3-1. Component Placement - C570R Display
1-3-2. Component Placement - C570U Lower Body
1-3-3. Component Placement - Contact (HTR) heart rate components
1-4-1. Block Diagram - C570R Electronics
1-5-1. Connections - C570R/U Display
1-5-2. Connections - C570R Drive Board
1-6-1. Drive Board Indicator LEDs - C570R/C570U
1-7-1. Electronic Specifications - C570R/C570U
2-1-1. Electronic Malfunction Troubleshooting Table - C570R/C570U
2-1-2. Electronic Malfunction Troubleshooting Table - C570R/C570U, Continued
3-1-1. Troubleshooting: Unit Will Not Start (Alternator)
3-2-1. Troubleshooting: Unit Will Not Start (Battery)
3-3-1. Troubleshooting: No RPM Value Appears
3-4-1. Troubleshooting: No Resistance
3-5-1. Resistance Is Excessive
3-6-1. Fan Does Not Operate
3-7-1. No Telemetry Heart Rate Reception
3-8-1. Soft Key Malfunction
3-9-1. Display Key Switch Malfunction
3-10-1. Contact Heart Rate Malfunction
3-11-1. Basic Parameter Mode
4-1-1. Mechanical Maintenance Schedule – C570R
4-2-1. Mechanical Troubleshooting Points – C570R

1-1-1. Product Picture - C570R
1-1-1

1-2-1. Display Picture - C570R/C570U
1-2-1

1-3-1. Component Placement - C570R Display
1-3-1
CARDIO board
Display board
Telemetry heart
rate receiver
board
Earphone jack
board
Fan motor

1-3-2. Component Placement - C570U Lower Body
1-3-2
Drive board
Battery
(on other side)
Alternator
Electro-magnet
CSAFE board
Optic sensor
Cable connectors

1-3-3. Component Placement - Contact (HTR) Heart Rate Components
1-3-3
HTR board
HTR cable
Connects HTR
contacts to HTR hub
board
HTR bridge (or hub)
board
HTR sensor plate

1-4-1. Block Diagram - C570R Electronics
1-4-1
Display
board
Drive
board
Keypad
Bridge
board
Fan motor
HR receiver
Sensor – L
Sensor – R
CARDIO board
Electro-
magnet
Optic sensor
Battery
Alternator
CSAFE
Battery charger
connector
HTR
Board

1-5-1. Connections - C570R/U Display
1-5-1
To cardio board
To drive board
To fan
To telemetry heart rate
receiver
To soft keys
To cardio board
To soft keys

1-5-2. Connections - C570R Drive Board
1-5-2
To alternator
To HTR board (only
use on
C570R)
To electro-magnet
To optic sensor
To display board
To battery
To display board

1-6-1. Drive Board Indicator LEDs - C570R/C570U
1-6-1
LED2
Lit = battery is being
recharged.
LED3
Lit = VDD power indicator
LED1
Lit = VCC power indicator
F1 battery fuse
F2 alternator fuse

1-7-1. Electronic Specifications - C570R/C570U
Specification Explanation Notes
Power supply AC alternator power
Information window 1.HRC window: 65%, 80%, Heart rate
2.Calories, Distance, Time, RPM
3.Cal/HR, Mets, Watts, Speed
Illustration window 5X8 two-color LED dot matrix (square)
Setting window Four-character 7-segment displays
Resistance range Level 1 – level 20
Heart rate detection HTR (contact) heart rate detection Telemetry heart rate detection (transmitter
strap)
KPH/MPH setting Set via the program
Fan Stop, low, medium, high settings
Operating mode Manual, Random, Plateau, Interval, Fat Burn
Fit Test, WT Loss, Cardio, Custom HR
1-7-1

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

Contact heart rate
malfunction I hold onto heart rate contacts with both hands, but there is
no heart rate reading.
1. Inspect the HTR wire connection at
the bridge board.
2. Inspect the HTR signal LED.
3. Replace the HTR board.
1.HTR board
Key malfunction
(display) I press the key but the key doesn’t operate; or I don’t
press the key, the key
operates constantly.
1. Replace the key switches on the
display. 1. key switches on the display
Key malfunction
(soft keys) I press the key but the key doesn’t operate; or I don’t
press the key, the key
operates constantly.
1. Inspect the soft key wire
connection.
2. Replace soft keys.
Soft keys
Fan doesn’t
operate I press fan keys but the fan
doesn’t operate. 1. Inspect wires inside the display. 2. Measure voltage output from the
display to the fan.
3. Replace the fan motor.
Display, fan
board
2-1-2

Troubleshooting
Model: C570R
Malfunction: Unit will not start (alternator).
Circumstance: Start pedaling; the display shows no reaction.
Possible reasons: 1. Wires are not connected.
2. The drive board fuse has blown.
Troubleshooting: 1. Inspect wire and data cable connections.
2. Inspect the alternator. Do LED1 and LED3
on the drive board light when you pedal?
3. Inspect whether F2 fuse on the drive board
is burnt.
4. Replace the drive board as a test.
5. Inspect the display power LED and main
program IC.
3-1-1
Drive
Board
Display
board
Alternator
Fuse
Display
LED2 POWER indicator
Lit = power is supplied
Cable connectors
Drive Board
F2 alternator fuse
Alternator
LED1, VCC power indicator
LED3, VDD power
indicator

Troubleshooting
Model: C570R
Malfunction: Unit will not start (battery).
Circumstance: When I stop pedaling, the display turns off.
Possible causes: 1. The battery fuse on the drive board is burnt.
2. The battery power is too low because the bike has been out of use.
3. The battery charge function on drive board has failed.
Troubleshooting: 1. Inspect wire and data cable connections.
2. Measure the battery voltage. Normal: 5.2V or more.
3. Inspect F1 fuse on the drive board. Or replace the drive board
as a test.
4. Pedal at 50 RPM or higher to recharge the battery.
3-2-1
Drive
board
Display
board
Battery
F1 fuse
Display LED2 POWER indicator
Lit= display receives power.
Cable connectors
Drive board
F1 battery fuse
Measure battery voltage

Troubleshooting
Model: C570R
Malfunction: No RPM value appears.
Circumstance: I pedal on the bike but no RPM value appears.
Possible causes: 1. Wires are not connected.
2. Optic sensor is malfunctioning.
Troubleshooting: 1. Make sure the distance between the optic sensor and the
reflective sticker is 3-8mm.
3. Make sure the sensor on the optic sensor board is clean.
2. Inspect the drive board.
3. Inspect all cable connections.
3-3-1
Drive
Board
Display
board
Sensor &
reflective
sticker
Drive board
To optic sensor
Display
Cable connectors

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

Troubleshooting
Model: C570R
Malfunction: Resistance is excessive.
Circumstance: Press fan keys; the fan does not operate; but resistance is excessive.
Possible causes: 1. Drive board components have an electrical short.
Troubleshooting: 1. Inspect all cable connections;
Make sure that screws don’t create an electrical short in the wires.
2. Test Q7 on the drive board.
3. Replace U5 IC on the drive board.
3-5-1
Inspect Q7 for an electrical short
Q7 Test
Set multi-meter to the diode
setting. Test the three pins of Q7
for a short.
Replace U5

Troubleshooting
Model: C570R
Malfunction: Fan does not operate.
Malfunction: Press the fan key; the fan does not operate.
Possible causes: 1. Pedal rotation speed is below 50 RPM.
2. Fan motor is defective.
Troubleshooting: 1. Inspect whether speed exceeds 50 RPM.
2. Inspect wire connections from the display to the fan board.
3. Test whether the display sends voltage to the fan board.
If the display board does not send voltage to the fan board,
replace the display.
If the display board sends voltage to the fan board, but the
fan board doesn’t operate, replace the fan board.
3-6-1
Fan motor
Display
board
Fan key
Display
Fan
Fan voltage
Setting Voltage
HIGH 10 VDC
MID 8.5 VDC
LOW 6.5 VDC