1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your YL91F-V LCD Display Bicycle Computer. This intelligent display is designed to enhance your riding experience on Lankeleisi electric bicycles by providing essential information at a glance.
2. Important Compatibility Note
Please read this section carefully before proceeding with installation or use.
The LCD display for electric bicycles is not universal. It is crucial that your original meter is YL91F or YL91F-V. If your current display does not match these models, this product is not compatible with your e-bike. Furthermore, the wire interface of this display must be exactly the same as your existing connection for proper functionality.
If you require a different type of LCD meter for Lankeleisi or Dukawey e-bikes, please contact the manufacturer or seller for assistance.
3. Product Overview
The YL91F-V LCD Display Bicycle Computer consists of the main display unit and a separate control unit, connected by a cable. It provides real-time data such as speed, distance, battery level, and error codes.
Figure 3.1: Front view of the YL91F-V LCD Display Bicycle Computer, showing the screen interface with battery, speed, error, and odometer readings. The display is mounted on a handlebar bracket.
Figure 3.2: The YL91F-V LCD Display unit and its separate control unit, connected by a cable. The control unit features buttons for power, mode, and navigation.
Figure 3.3: Rear view of the YL91F-V LCD Display, showing the mounting bracket and cable connection point. The control unit is also visible, highlighting its ergonomic design.
4. Setup and Installation
Before installation, ensure your e-bike is powered off and the battery is disconnected for safety.
- Mount the Display: Securely attach the YL91F-V LCD display unit to your e-bike's handlebar using the integrated mounting bracket. Ensure it is positioned for optimal visibility and does not obstruct steering or other controls.
- Mount the Control Unit: Attach the separate control unit to a convenient location on your handlebar, typically near your thumb for easy access to buttons.
- Connect Cables: Carefully connect the display unit's cable to the corresponding port on your e-bike's wiring harness. Ensure the connection is firm and secure. Verify that the wire interface matches exactly as per the compatibility note.
- Secure Wiring: Route and secure all cables to prevent them from snagging or interfering with moving parts. Use cable ties if necessary.
- Power On: Reconnect your e-bike's battery and power on the system. The display should illuminate and show initial readings.
Figure 4.1: Top-down view illustrating the mounting points on the YL91F-V LCD Display and the control unit, showing how they attach to the handlebar.
5. Operating Instructions
The YL91F-V display provides various functions and data. Familiarize yourself with the control unit buttons:
- Power Button: Press and hold to turn the display on/off.
- Mode Button: Short press to cycle through different display modes (e.g., ODO, TRIP, MAX, AVG).
- Up (+) Button: Increase assistance level or navigate menu options.
- Down (-) Button: Decrease assistance level or navigate menu options.
- Light Button: Turn the e-bike's lights on/off (if connected and supported).
Display Information:
- Battery Level: Indicates the remaining battery charge.
- Current Speed: Shows your real-time riding speed (KM/H or MPH).
- Assistance Level (PAS): Displays the current pedal assistance level.
- Odometer (ODO): Total distance traveled by the e-bike.
- Trip Distance (TRIP): Distance traveled during the current ride.
- Max Speed (MAX): Highest speed reached during the current ride.
- Average Speed (AVG): Average speed during the current ride.
- Error Codes: Displays specific codes if a system error occurs. Refer to the troubleshooting section for common codes.
6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your YL91F-V display.
- Cleaning: Wipe the display screen and body with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Water Exposure: While the display is designed to be splash-resistant, avoid submerging it in water or exposing it to heavy rain for prolonged periods.
- Cable Inspection: Periodically check all cables and connections for signs of wear, damage, or looseness. Ensure connections remain secure.
- Storage: When not in use for extended periods, store the e-bike and display in a dry, temperate environment.
7. Troubleshooting
This section addresses common issues you might encounter with your YL91F-V display.
| Problem | Possible Cause | Solution |
|---|---|---|
| Display does not power on. |
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| No speed reading. |
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| Error code displayed. |
| Error codes indicate specific issues. Consult your e-bike's main manual for a list of error codes and their meanings. If the code is not listed or you cannot resolve it, contact customer support. |
8. Specifications
| Model Number | YL91F-V (For dual motor bike) |
| Display Type | LCD |
| Screen Size | 4.5 inch (105x55mm) |
| Color | Black |
| Material | Plastic |
| Included Components | LCD Display Unit |
| Sensor Type | Speed Sensor (integrated/compatible) |
| Manufacturer | Yolin |
9. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your e-bike or contact the seller/manufacturer directly. Ensure you have your purchase details and the product's model number (YL91F-V) ready when seeking support.
If you need to return the product, please ensure it is packaged in a strong box to prevent damage during transit.
