The FANUC A17B-8100-0112 is a main PCB used in compatible FANUC CNC control units.

FANUC hardware documentation lists this part among the LCD-mounted main boards associated with selected Series 30i, 31i, 32i, and 35i-Model B control systems, as well as certain 31i-Model B5 and Power Motion i-Model A configurations. Exact compatibility depends on the complete CNC specification and installed hardware.

As the central circuit board within the control unit, the A17B-8100-0112 supports system-level control and connections with associated CPU, servo, memory, display, and interface components.

It is suitable for replacing an original main board with confirmed circuit damage, startup problems, unstable controller operation, internal communication faults, or failure to recognize connected modules.

Because several FANUC main boards in the same family can have similar layouts, customers should verify the complete part number, PCB revision, control model, and installed card configuration before ordering.

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

Product Details

• Brand: FANUC
• Part Number: A17B-8100-0112
• Alternative Format: A17B81000112
• Type: Main PCB / CNC Main Board
• Product Series: A17B-8100
• Installation Type: LCD-Mounted CNC Control Unit
• Referenced Control Families: Selected FANUC 30i / 31i / 32i / 35i-Model B
• Additional Referenced Systems: 31i-Model B5 / Power Motion i-Model A
• Application: FANUC CNC and Motion Control Systems
• Function: Main system control and internal hardware connectivity
• Category: FANUC CNC Motherboard / Main Control PCB

The control-family references above come from FANUC hardware component listings; they do not mean the board is interchangeable across every model in those families.

Compatibility Note

Before purchasing the A17B-8100-0112, please confirm:

• Complete FANUC CNC model and control specification
• Full PCB number and revision marking
• Original connector and component layout
• Installed CPU, servo, and memory cards
• LCD-mounted control-unit configuration
• Required system software and parameter backup

A nearby A17B-8100 part number or visually similar board may represent a different hardware configuration and should not be treated as a direct substitute without verification.

Common Use Cases

• FANUC CNC main-board replacement
• Diagnosis of controller startup failures
• Repair of unstable or intermittent CNC operation
• Troubleshooting internal module communication faults
• Replacement of a physically damaged main PCB
• Restoration of compatible FANUC 30i/31i/32i control equipment
• Preparation of a tested spare board for maintenance

Sales & Support

Each A17B-8100-0112 main board is 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, testing-video support, and technical assistance for FANUC CNC main boards and control-system components.