JK-TONE FC 7.820.507

The JK-TONE FC 7.820.507 (often specifically referenced as FC7.820.507 V2.1) is a specialized Printed Circuit Board (PCB) primarily used as a Telephone Exchange Controller or communication interface board.

While “JK-TONE” is a brand often associated with fitness equipment (treadmills), this specific part number is almost exclusively documented in industrial and marine automation surplus markets as a telecommunications component.

Technical Details & Use Cases

• Primary Function: Acts as a controller for telephone exchanger systems. It manages signal routing and switching for internal or external telephone networks.

• Origin: Often manufactured in Japan.

• Common Versions: The most common iteration found is the V2.1.

• Industrial Context: These boards are frequently found in “legacy” or “specialized” electronic systems, such as marine communication consoles or older PBX (Private Branch Exchange) systems used in commercial buildings.

Troubleshooting & Replacement

If you are looking for this board because your equipment has failed, here are a few key points to consider:

• Check the Version: Ensure you match the version number (e.g., V2.1) exactly, as different versions may have different pin configurations or firmware.

• Visual Inspection: Since these are often used in marine or industrial environments, check for corrosion on the traces or leaking electrolytic capacitors, which are common failure points for boards of this age.

• Availability: Because it is a niche industrial part, it is rarely available “new” from retail stores. You will typically find it on industrial surplus sites (like eBay or specialized PLC/Automation vendors).

Important Distinction

Do not confuse this with a JK-TONE Treadmill Motor Controller. If your treadmill is broken and you see “JK-TONE” on the machine, the PCB you need will typically have a different part number and contain large heat sinks for motor control. The FC 7.820.507 is specifically for telecom/switching data.