1. Introduction
This manual provides essential instructions for the proper setup, operation, and maintenance of your LMYYDES Electronic Cash Register. This all-in-one POS system is designed for retail and restaurant environments, featuring a 15.6-inch dual touch screen, a powerful I3 processor, 8GB RAM, and a 128GB SSD, running on Windows 10. Please read this manual thoroughly before using the device to ensure optimal performance and longevity.
2. Safety Information
Observe the following safety precautions to prevent damage to the device or injury to yourself:
- Ensure the power supply voltage matches the requirements specified on the device label.
- Do not expose the device to water, moisture, or extreme temperatures.
- Place the cash register on a stable, flat surface to prevent it from falling.
- Avoid blocking ventilation openings to prevent overheating.
- Do not attempt to open or repair the device yourself. Refer all servicing to qualified personnel.
- Keep the device away from strong magnetic fields.
3. Package Contents
Please check the package contents upon unpacking. If any items are missing or damaged, contact your vendor immediately.
- LMYYDES Electronic Cash Register Unit (with dual 15.6-inch touch screens)
- Power Adapter and Cable
- User Manual (this document)
- Thermal Paper Roll (for built-in printer)
4. Setup
4.1 Unpacking and Placement
- Carefully remove the cash register from its packaging.
- Place the unit on a stable, level counter or desk. Ensure there is adequate space around the unit for ventilation.
- Adjust the main display to your preferred viewing angle. The screen supports multi-angle adjustment for comfortable use.
4.2 Connecting Power and Peripherals
Connect the power adapter to the DC-IN port on the back of the unit, then plug it into a suitable power outlet.
The cash register features multiple ports for connecting peripherals:
- USB Ports (x6): For connecting external devices such as barcode scanners, keyboards, mice, or external storage.
- LAN Port (x1): For wired network connection.
- CGA Port (x1): For external display connection.
- COM Port (x1): For serial device connection.
- Audio Ports (x1): For audio input/output.

Image: Rear view of the cash register highlighting the various connectivity ports for peripherals.
4.3 Initial Power On
Press the power button, usually located on the side or front of the main unit. The system will boot up, displaying the Windows operating system.
5. Operating Instructions
5.1 Touch Screen Operation
The cash register features a multi-point capacitive touch screen. Interact with the interface by tapping, swiping, and pinching as you would with any standard touch-enabled Windows device.

Image: The LMYYDES Electronic Cash Register in operation within a retail setting, demonstrating its primary function.
5.2 Dual Screen Functionality
The unit is equipped with two 15.6-inch screens. The main screen is for operator use, while the secondary screen can be used to display transaction details, advertisements, or customer information to the customer.

Image: A view of the cash register showcasing its dual 15.6-inch touch screens, one facing the operator and one facing the customer.
5.3 Using the Built-in 58mm Thermal Printer
The cash register includes a built-in 58mm thermal printer for fast and clear receipt printing.
- Loading Paper: Open the printer cover, insert a 58mm thermal paper roll with the leading edge facing out, and close the cover securely.
- Printing: Once your POS software is configured, receipts will automatically print after completing a transaction.
5.4 Software and System
The system comes with Windows 10 pre-installed and supports various POS software applications. Ensure your chosen POS software is compatible with Windows 10 and the system's hardware specifications.
6. Maintenance
6.1 Cleaning the Device
- Screens: Use a soft, lint-free cloth slightly dampened with a non-abrasive screen cleaner. Do not spray cleaner directly onto the screen.
- Exterior: Wipe the exterior surfaces with a soft, dry cloth. Avoid harsh chemicals or abrasive materials.
- Ventilation: Periodically check and clean any dust accumulation from the ventilation openings using a soft brush or compressed air.
6.2 Printer Maintenance
Regularly clean the thermal print head to ensure clear print quality. Use a specialized thermal printer cleaning pen or isopropyl alcohol on a cotton swab. Ensure the printer is turned off and cooled down before cleaning.
6.3 Software Updates
Regularly update your Windows operating system and POS software to ensure security and optimal performance. Follow the instructions provided by Microsoft and your software vendor for updates.
7. Troubleshooting
If you encounter issues with your cash register, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Power cable loose; Power outlet faulty; Power adapter failure. | Check power cable connections; Try a different power outlet; Contact support if adapter is suspected faulty. |
| Touch screen unresponsive. | Software glitch; Screen calibration issue; Physical damage. | Restart the device; Check Windows touch screen settings; Contact support. |
| Printer not printing. | No paper; Paper loaded incorrectly; Printer driver issue; Printer head dirty. | Load new paper; Re-insert paper correctly; Reinstall printer drivers; Clean printer head. |
| System is slow or freezing. | Too many applications running; Insufficient memory; Malware. | Close unnecessary applications; Run system diagnostics; Scan for viruses/malware. |
If the problem persists after attempting these solutions, please contact customer support.
8. Specifications
Detailed technical specifications for the LMYYDES Electronic Cash Register:
- Model: asdfwe-916134
- Screen: Dual 15.6-inch Touch Screens
- Resolution: 1366*768
- Processor: Intel Core I3 Dual-Core
- Operating System: Windows 10 (Supports Windows/Android)
- Memory (RAM): 8GB DDR3
- Storage (SSD): 128GB
- Printer: Built-in 58mm Thermal Printer
- Connectivity: Built-in WiFi, 6x USB ports, 1x DC-IN, 1x LAN, 1x CGA, 1x COM, 1x Audio
- Voltage: 12V
- Languages: Supports English, French, German, Italian, Spanish, etc. (30+ languages)
- Dimensions: Approximately 38.5 cm (W) x 30 cm (D) x 42 cm (H)
- Weight: Approximately 7.5 KG

Image: Dimensional drawing of the cash register, indicating width, depth, and height.
9. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official LMYYDES website. Keep your purchase receipt as proof of purchase for warranty claims.





