The FANUC A20B-8101-0710 is an LCD main PCB used in compatible FANUC Series 16i-B CNC control systems.

Also described as a main board, main control PCB, or CNC motherboard, this board forms an important part of the controller hardware and supports coordinated operation between the CNC system and its associated display, memory, interface, and control components.

The A20B-8101-0710 is suitable for replacing an original board that has developed startup problems, unstable system operation, communication errors, display-related faults, or other confirmed board-level failures.

Because the installed modules and board population may differ between CNC configurations, customers should compare the complete part number, connector arrangement, installed cards, and original control configuration before ordering.

• Main-board functions tested before shipment
  
• In stock and available for prompt dispatch
  
• Worldwide DHL, UPS, and FedEx shipping

Product Details

• Brand: FANUC
• Part Number: A20B-8101-0710
• Alternative Format: A20B81010710
• Type: LCD Main PCB / Main Control Board
• Control Series: FANUC Series 16i-B
• Product Series: A20B-8101
• Application: FANUC CNC Control Systems
• Function: Main system control and communication between associated CNC components
• Category: FANUC CNC Main Board / LCD Control PCB

Configuration Note

The A20B-8101-0710 may be offered as an individual PCB or as a populated assembly with additional modules installed.

Before ordering, please verify:

• Complete FANUC part number and board revision
• Original PCB layout and connector positions
• FANUC CNC control model
• Installed memory, CPU, or option modules
• Whether a bare PCB or populated assembly is required
• Existing system parameters and software configuration

A board with a similar appearance or nearby part number may not have the same hardware configuration.

Common Use Cases

• FANUC Series 16i-B main PCB replacement
• CNC controller startup fault troubleshooting
• Repair of unstable control or communication behavior
• Replacement of a damaged LCD main control board
• Restoration of an existing FANUC CNC control system
• Preparation of a tested spare board for machine maintenance

Sales & Support

Each LCD main PCB is carefully inspected and tested under applicable conditions before delivery.

Worldwide shipping is available through DHL, UPS, FedEx, and other express carriers. REACO CNC provides PCB repair service, warranty coverage, and technical assistance for FANUC CNC main boards and control-system components.