SportsArt C55U User manual

Brand: SportsArt

Model: C55U

Type: User manual

SportsArt C55U is a piece of exercise equipment that combines a high level of functionality with ease of use. It is a stationary bike with a comfortable seat. The C55U has 14 different resistance levels, which makes it suitable for both beginners and experienced cyclists. The resistance is controlled electronically, which ensures a smooth and consistent ride. It also has a built-in heart rate monitor, which helps you to track your progress and stay within your target heart rate zone.

The C55U is also equipped with a variety of other features that make it a great choice for home use. It has a large, easy-to-read display that shows your workout data, including speed, distance, time, and calories burned. It also has a built-in cooling fan, which helps to keep you cool and comfortable during your workout.

C55U Repair Manual (Electronics)

Table of Contents

1-1-1. Product Picture - C55U

1-2-1. Display Overlay - C55U

1-3-1. Component Placement - C55U

1-3-2. Component Placement - C55U

1-4-1. Block Diagram - C55U

1-5-1. Cable Connections - C55U Display Board

1-5-2. Cable Connections - C55U Drive Board

1-6-1. LED Indicators - C55U Display Board

1-6-2. LED Indicators - C55U Drive Board

1-7-1. Specification Chart - C55U

2-1-1. Electronics Troubleshooting Chart - C55U

3-1-1. Troubleshooting - C55U No Start

3-2-1. Troubleshooting - C55U No RPM Value

3-3-1. Troubleshooting - C55U No Resistance Adjustment

3-4-1. Troubleshooting - C55U Excessive Resistance

3-5-1. Troubleshooting - C55U Telemetry Heart Rate Malfunction

3-6-1. Troubleshooting - C55U HTR Heart Rate Malfunction

3-7-1. Troubleshooting - C55U Key Malfunction

4-1-1. Testing - C55U Transformer Voltage Test

4-2-1. Testing - C55U Motor Voltage Test

4-3-1. Testing - C55U VR Voltage Test

4-4-1. Testing - C55U Reed Switch/Magnet Test

1-1. Product Picture - C55U

1-1-1

1-2. Display Overlay - C55U

1-2-1

1-3. Component Placement -

C55R/C55U

1-3-1

Telemetry heart rate

board

HTR board

1-3. Component Placement - C55U Lower Compartment

1-3-2

Switch and fuse holder

Magnet

Flywheel

Transformer

Drive board

Reed switch

Motor/VR

1-4. Display Block Diagram - C55R/C55U

1-4-1

Display

Board

Drive

Board

Motor

Reed Switch

Telemetry HR

Receiver

oard

Fuse

Power

Cord

HTR Board

Sensor-L

Sensor-R

Transformer

1-5. Cable Connection Picture – C55U/C55R Display Board

1-5-1

To LCD module

To drive board

To telemetry

receiver board

To HTR board

To HTR contact plate

1-5. Cable Connection Picture – C55U Drive Board

1-5-2

To display board

To VR box

To reed switch

To transformer To fuse and power switch

1-6. Indicator LEDs - C55U Display

1-6-1

Telemetry HR board

Lit indicates HR signal

1-6. Indicator LEDs - C55R/C55U Drive Board

1-6-2

LED5 CLK Indicator

During exercise,

LED flashes

LED3 LEVEL UP

Lit indicates increasing

resistance from motor/VR

assembly

LED1 Motor/VR Assembly Power

Lit indicates motor/VR power

supply

LED2 Power Indicator

Lit indicates there is incoming power

LED4 LEVEL DOWN

Lit indicates decreasing

resistance from the

motor/VR assembly

1-7. Specification Chart - C55R/C55U

Function

Detail Note

Main power

Exterior power supply 110V or 220V

Speed detection

Reed switch + magnet

Resistance control

Electronic resistance adjustment via motor/VR assembly control

Resistance type

Permanent magnet

Level range LEVEL 1 – LEVEL 14

Main display

method

LCD

Secondary display

method

WORKOUT LEVEL / TIME

RPM / CALORIES

Program

RANDOM / TRACK / INTERVAL / HILL

Heart rate Telemetry heart rate / contact HTR

User mode USER1 – USER4

Keys Key switches

1-7-1

2-1. Electronics Troubleshooting Chart – C55R/C55U

Malfunction

Circumstance Inspect and Test Components

Notes

No start up Exercise. Display does

not light up.

1. Inspect cable connections.

2. Inspect drive board fuse.

3. Inspect power LED on drive board.

4. Inspect display IC.

1.Fuse

2.Drive board

3.Display

strides/min

Exercise. Display RPM

= 0.

1. Inspect all cable connections.

2. Inspect LED5 on the drive board. A. Magnet or reed

switch malfunction. B. Drive board malfunction.

3.Inspect IC installation.

1.Reed switch

and magnet

resistance

adjustment

Press LEVEL

<▲>/<▼>. Resistance

doesn’t change.

1.Press LEVEL<▲>/<▼>. Display LEVEL does not

change. Key malfunction.

2.Inspect drive board LED3 or LED4.

If LEDs do not light, inspect cables or replace drive

board.

3.Test or replace VR.

1.VR

Excessive

resistance

Exercise. Resistance is

excessive.

1.Flywheel magnet is stuck.

Telemetry

(wireless)

heart rate

malfunction

Telemetry heart rate

malfunction

1.Inspect heart rate transmitter and its batteries. Replace

batteries if necessary.

2.Inspect heart rate receiver cable connections.

3.Test or replace heart rate receiver cable.

4.Inspect for environmental interference, possibly from

lights or speakers.

1. Transmitter

2. Receiver

HTR heart

rate

malfunction

HTR malfunction 1.Inspect the HTR cable connections.

2.Replace the HTR board.

1.HTR board

Key

malfunction

No key operation, or

constant operation.

1.Replace key switches. Key switches

2-1-1

Troubleshooting

Model:

C55U

Malfunction: No start up

Circumstance: Turn on power; display does not light.

Possible cause: 1. Poor cable connections

2. Fuse blew

Troubleshooting: 1. Inspect all cable connections.

2. Inspect main fuse and power switch area.

3. Inspect drive board indicator LED.

4. Test transformer voltage output.

5. Inspect display program IC.

3-1-1

Drive

Board

Display

Board

Transformer

FUSE

Inspect whether PWR

LED on the drive board

lights

Inspect transformer output voltage

Program IC

Troubleshooting

Model:

C55U

Malfunction: No RPM value

Circumstance: 1. No RPM value

2.Exercise on the bike.

The display shows no reaction.

Possible cause: 1. Reed switch malfunction

2. Poor cable connection

Troubleshooting: 1. Inspect all cable connections.

2. Inspect reed switch and magnet.

3. Inspect CLK indicator on drive board.

4. Inspect the display IC installation.

3-2-1

Display

board

Drive board

Reed switch

Inspect reed switch and magnet

LED5 reed switch indicator

on drive board

Main program IC

Troubleshooting

Model: C55U

Malfunction: Resistance cannot be adjusted.

Circumstance: Press the level key. Resistance does not change.

Possible cause: 1. Key malfunction

2.VR malfunction

Troubleshooting: 1. Press LEVEL<▲>/<▼>. If LEVEL values on

the display do not change, the keys are bad.

2. Inspect LED4 or LED5. If LEDs do not light,

inspect the cable or replace drive board.

3.Test or replace the VR.

3-3-1

Drive

Board

Display Board

VR Set

VR Motor

Inspect UP/DOWN LEDs

Troubleshooting

Model:

C55U

Malfunction: Excessive resistance

Circumstance: Exercise on the bike; resistance is excessive.

Possible cause: 1.The flywheel magnet is stuck.

Troubleshooting: 1. Inspect the flywheel magnet.

3-4-1

Troubleshooting

Model:

C55R/C55U

Malfunction: Telemetry (wireless) heart rate malfunction

Circumstance: Telemetry heart rate malfunction

Possible causes: 1.Telemetry strap battery

2. Telemetry HR receiver malfunction

3. Environmental interference,

possibly from lights or speakers

Troubleshooting: 1.Replace heart rate transmitter

or its batteries

2.Inspect the transmitter receiver board cable

connections.

3.Inspect the heart rate board LEDs.

4.Replace the heart rate board as a test.

5.Inspect sources of interference, such as

lights and speakers.

3-5-1

Display

board

HR receiver

HR transmitter

Telemetry heart rate receiver

board

Heart rate transmitter

(battery location)

Troubleshooting

Model:

C55R/C55U

Malfunction: HTR (contact) heart rate malfunction

Circumstance: HTR malfunction

Possible cause: 1.HTR board malfunction

Troubleshooting: 1.Inspect HTR board

cable connections

2. Replace the HTR board as a test.

3-6-1

Display

Board

HTR Board

Sensor-L

Sensor-R

Troubleshooting

Model:

C55R/C55U

Malfunction: Key malfunction

Circumstance: Press keys; there is no reaction

or keys are constantly activated.

Possible causes: 1. Key cushion is out of place

2. Key switch malfunction

Troubleshooting: 1.Inspect key switches and

cushion placement.

3-7-1

Display Board

Key Switches

Key

Cushions

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SportsArt C55U User manual

SportsArt C55U User manual

SportsArt C55U User manual

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