Mitsubishi J3-C70 PCB-07034 Servo Amplifier Control PCB

The Mitsubishi J3-C70 is an OEM control PCB used inside MDS-D-SVJ3-NA CNC servo amplifiers. Mitsubishi identifies it as service part PCB-07034 and describes it as the J3-C70 control PCB for the MDS-SVJ3-NA family. It handles control-side processing and interface functions while working with the unit's power-stage PCB. This listing is for the circuit board only, not a complete servo amplifier.

Servo Amplifier Control and Replacement Use

J3-C70 is intended for board-level maintenance of Mitsubishi CNC servo drives. It supports internal drive control, communication and feedback-signal processing. Replacement is appropriate when qualified diagnosis identifies the control PCB as the fault source. J3-C70 is not a standalone controller and should not be confused with the Mitsubishi C70 CNC system.

Verified Compatibility and Exact-Match Guidance

• Drive family: Mitsubishi MDS-D-SVJ3-NA servo amplifiers
• Verified units: MDS-D-SVJ3-03NA, -04NA, -07NA, -10NA, -20NA and -35NA
• Official service reference: PCB-07034
• Reference PCB marking: BC386A801G51; confirm against the actual board because revisions may vary

Before replacement, compare J3-C70, PCB-07034, the complete PCB/revision marking, connector layout and host amplifier model. If a board carries a suffix marking such as J3-C70A, confirm its revision and host amplifier before installation instead of assuming interchangeability from appearance alone.

Product Specifications

REACO Testing, Support and Packing

Every supplied J3-C70 is 100% tested before dispatch. REACO CNC provides free model matching, technical support and warranty coverage. The board is packed with ESD and impact protection for international transport. Related parts are organized under Mitsubishi CNC PCBs, with complete assemblies under Mitsubishi servo drives.