Introduction
This manual provides essential information for the safe and effective use of your SupplySource AC/DC Adapter. This adapter is designed as a replacement power supply for various RockJam electronic keyboards, including models 61-Key 561 (RJ561, RJ-561), 661 (RJ661, RJ-661), 761-SK, and 54-Key 654 (RJ654, RJ-654, RJ6544). Please read these instructions carefully before use and retain them for future reference.
Setup Instructions
Before connecting the adapter, ensure that the DC output voltage and tip size of this adapter match the requirements of your RockJam electronic keyboard. Incorrect voltage or tip size can damage your device.
- Verify Compatibility: Confirm that your keyboard model is listed as compatible with this adapter. Refer to your keyboard's original power supply specifications or user manual.
- Connect to Keyboard: Insert the barrel connector of the AC/DC adapter firmly into the power input jack of your RockJam electronic keyboard.
- Connect to Power Outlet: Plug the AC/DC adapter into a standard 100-240V wall outlet. Ensure the outlet is easily accessible.
- Power On: Once connected, you may power on your electronic keyboard.

Image: The SupplySource AC/DC Adapter showing its barrel connector, ready for connection to a compatible device.
Operating Instructions
The SupplySource AC/DC Adapter provides a stable power supply to your compatible RockJam electronic keyboard. No specific operational steps are required for the adapter itself beyond proper connection.
- Ensure the adapter is securely plugged into both the keyboard and the wall outlet during use.
- Avoid bending or kinking the power cable excessively to prevent internal damage.
- If the keyboard is not in use for an extended period, it is recommended to unplug the adapter from the wall outlet.

Image: The AC/DC Adapter highlighting its built-in safety electronics, including protection against overcharge, over voltage, short-circuit, over current, and over temperature.
Maintenance
Proper maintenance ensures the longevity and safe operation of your AC/DC adapter.
- Cleaning: Disconnect the adapter from the power source and the keyboard before cleaning. Use a dry, soft cloth to wipe the adapter. Do not use liquid cleaners or solvents.
- Ventilation: When the adapter is in use for extended periods, ensure it is placed in a well-ventilated area. Avoid covering it or placing it on soft surfaces that can obstruct airflow.
- Storage: Store the adapter in a cool, dry place with suitable humidity when not in use. Avoid extreme temperatures.
- Handling: Do not place the adapter on skin products or in direct contact with skin for prolonged periods during operation, as it may generate heat.
Troubleshooting
If you encounter issues with your SupplySource AC/DC Adapter, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Keyboard does not power on. |
|
|
| Adapter feels warm during use. | Normal operation, especially under load. | Ensure adequate ventilation around the adapter. If it becomes excessively hot or emits smoke/odor, unplug immediately and discontinue use. |
| Intermittent power to keyboard. |
|
|
Product Specifications
| Brand | SupplySource |
| Input Voltage Range | 100-240V AC |
| Input Frequency | 50-60Hz |
| Output Voltage | 12 Volts |
| Output Current | 2.5 Amps |
| Wattage | 30 watts |
| Cable Length | 4 feet (approximately 1.2 meters) |
| Connector Type | Barrel Connector |
| Compatible Devices | RockJam 61-Key 561 RJ561 RJ-561, 661 RJ661 RJ-661, 761-SK, 54-Key 654 RJ654 RJ-654 RJ6544 Electronic Digital Piano Keyboards |
| Safety Certifications | CE, FCC |
| Material | Metal, Plastic |
| Item Weight | 0.08 Kilograms |

Image: The AC/DC Adapter shown with an indication of its 4-foot cable length.
Warranty Information
This SupplySource AC/DC Adapter is manufactured with high-quality materials and includes multiple smart features for protection against incorrect voltage, short circuits, and internal overheating. Chargers are certified with CE and FCC standards.
- Manufacturer Warranty: The product includes a 24-month warranty from the manufacturer.
- Return Policy: A 30-day return policy for refund or replacement is typically available from the point of purchase. Please refer to your retailer's specific return policy for details.
Customer Support
For technical assistance, warranty claims, or further inquiries regarding your SupplySource AC/DC Adapter, please contact the manufacturer or your point of purchase.
Manufacturer: SupplySource
Please have your product model information and purchase details ready when contacting support.