Mitsubishi J3-C70A is a servo-drive control printed circuit board with processing ICs, signal connectors and a fitted daughterboard. It is supplied for board-level replacement enquiries, with the original drive model and complete PCB identification checked before ordering.

The photographed board carries the additional PCB number BC386A801G51 and Mitsubishi Electric Corporation identification. Retain the A suffix in J3-C70A when comparing parts. This listing concerns the control board assembly, rather than a complete servo amplifier.

J3-C70A Product Information

Control-Side Components and Connector Layout

The supplied photographs show the processing components, metal-shielded connectors, black connector housings and the brown board-to-board connector. Visible PCB labels include CN1A, CN1B, CN2, CN2L, CN3 and CON1. Compare the connector positions, keying and mounting points with the original; these labels alone do not establish pin assignments or interchangeability.

J3-C70A and BC386A801G51 Identification

Use J3-C70A as the primary enquiry reference and include BC386A801G51 from the actual board. Supply photographs of all revision labels and the drive nameplate. Do not assume that J3-C70, J3-C70A or another board sharing the PCB number is interchangeable without checking the complete configuration.

Replacement Scope and Configuration Checks

Confirm whether the required supply includes the fitted daughterboard and all connectors shown. Before removal, have a qualified technician record the existing configuration and confirm any parameter backup or restoration requirements for the exact drive. Isolate the equipment, follow its discharge procedure and use anti-static protection when handling the PCB.

Testing, Warranty and Dispatch

REACO CNC provides actual product photographs and a testing video before shipment. The supplied condition and applicable test scope are confirmed for the quoted board. Confirmed stock normally ships within 1–2 business days after payment. Warranty is 1 year for new/refurbished items and 3 months for used items.

Related resources: Mitsubishi PCB boards and Mitsubishi servo drives.