1. Introduction
This manual provides essential instructions for the safe and effective use of your FocalTop AC Charger Cord. This power adapter is specifically designed to provide reliable power to compatible Yamaha keyboards, including models PSR-E303, PSR-E253, and PSR-E263. Please read this manual thoroughly before using the product.

Image 1.1: FocalTop AC Charger Cord. This image shows the main unit of the charger, featuring a standard two-prong AC plug and a DC barrel connector at the end of its cable.
2. Safety Information
To ensure safe operation and prevent damage, always adhere to the following safety guidelines:
- Read all instructions carefully before using the charger.
- Do not expose the charger to water, rain, or excessive moisture.
- Do not disassemble, modify, or attempt to repair the charger. Refer all servicing to qualified personnel.
- Use the charger only with the specified Yamaha keyboard models (PSR-E303, PSR-E253, PSR-E263) or other devices with compatible power requirements.
- Ensure the power outlet voltage matches the charger's input voltage (AC 100-240V).
- Avoid placing the charger in areas with poor ventilation or near heat sources.
- Keep out of reach of children.
- Unplug the charger from the wall outlet when not in use for extended periods or during electrical storms.
3. Package Contents
Verify that your package contains the following item:
- 1x FocalTop AC Charger Cord
4. Setup
Follow these steps to connect your AC Charger Cord to your Yamaha keyboard:
- Power Off Keyboard: Ensure your Yamaha keyboard (PSR-E303, PSR-E253, or PSR-E263) is powered off before connecting the charger.
- Connect to Keyboard: Locate the DC power input jack on your Yamaha keyboard. Insert the DC barrel connector of the FocalTop AC Charger Cord firmly into this jack.
- Connect to Power Outlet: Plug the two-prong AC input prongs of the charger into a standard AC 100-240V wall outlet.
- Verify Connection: A small LED indicator on the charger unit should illuminate, confirming that the charger is receiving power.

Image 4.1: FocalTop AC Charger Cord. This image displays the charger unit with its cable neatly coiled, showing both the AC plug and the DC connector.
5. Operating Instructions
Once the charger is properly connected:
- You can now power on your Yamaha keyboard. The charger will provide continuous power for operation.
- The charger is designed for continuous use during keyboard operation.
- To disconnect, first power off your keyboard, then unplug the charger from the wall outlet, and finally disconnect the DC connector from the keyboard.
6. Maintenance
Proper maintenance ensures the longevity and performance of your charger:
- Cleaning: Use a soft, dry cloth to clean the charger. Do not use liquid cleaners or solvents.
- Storage: Store the charger in a cool, dry place away from direct sunlight and extreme temperatures when not in use. Avoid tightly coiling the cable to prevent damage.
- Inspection: Periodically inspect the charger cord and connectors for any signs of damage, such as fraying, cuts, or bent pins. If damage is observed, discontinue use immediately.
7. Troubleshooting
If you encounter issues with your FocalTop AC Charger Cord, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger LED indicator is off / Keyboard not powering on. | No power from outlet; Loose connection; Faulty charger. | Check if the wall outlet is functional by plugging in another device. Ensure all connections (charger to wall, charger to keyboard) are secure. If issues persist, the charger may be faulty. |
| Keyboard powers on but shuts off intermittently. | Unstable power supply; Overload protection triggered. | Ensure the charger is not overloaded by other devices on the same circuit. Verify the charger is not overheating. Disconnect and reconnect. |
| Charger feels excessively hot. | Poor ventilation; Overload. | Ensure the charger is in a well-ventilated area. Disconnect if it becomes too hot to touch and allow it to cool. If overheating persists, discontinue use. |
If troubleshooting steps do not resolve the issue, discontinue use and contact FocalTop customer support.
8. Specifications
Key technical specifications for the FocalTop AC Charger Cord:
- Input Voltage: AC 100-240V, 50-60Hz (Worldwide Use)
- Output Voltage: DC 12 Volts
- Compatibility: Yamaha PSR-E303, PSR-E253, PSR-E263 Keyboards
- Connector Type: Proprietary DC Barrel Connector
- Special Features: LED Charging Indicator, Short Circuit Protection, Overload Protection
- Certifications: FCC, CE, ROHS
- Color: Black

Image 8.1: FocalTop AC Charger Cord with label. This image provides a closer view of the charger unit, where the product label with input/output specifications and certifications is visible.
9. Warranty and Support
FocalTop products are manufactured to high-quality standards. For warranty information or technical support, please contact FocalTop directly through their official website or the retailer from whom the product was purchased. Please have your product model and purchase date available when contacting support.