The A20B-8200-0849 is a Fanuc 0i-D Main PCB A5 used in CNC control systems where dependable board communication and stable machine performance are essential. As a core control board inside the CNC unit, it supports the machine’s operating logic, internal signal handling, and the overall consistency needed for daily production.

When a main PCB begins to fail, the effect is usually immediate. Machines may become difficult to start, respond unpredictably, or show system-related faults that interrupt normal work. In those situations, the A20B 8200 0849 is an important replacement part for customers who need to restore control stability and keep the machine in operation.

At REACO CNC, we supply reliable Fanuc parts for customers who need replacement boards, maintenance stock, or Fanuc repair support for installed CNC equipment.

Product Overview

The A20B-8200-0849 Fanuc main board is designed for 0i-D systems and identified as the A5 version of the main PCB. Boards in this position are closely tied to the overall control structure of the machine and help keep the CNC system operating as intended.

For many maintenance teams, the most important thing is not just finding a board, but finding the correct board. Using the proper A20B-8200-0849 helps reduce compatibility concerns and makes the repair process more direct, especially when the goal is to get an existing machine running again without unnecessary delays.

Key Features

• Main PCB for Fanuc 0i-D control systems
• Identified as 0i-D Main PCB A5
• Supports central control and internal board communication
• Suitable for replacement, repair, or spare stock
• Practical option for maintaining installed Fanuc CNC equipment

Typical Applications

The A20B-8200-0849 is commonly used in:

• Fanuc CNC machine tools
• 0i-D control units
• Industrial production equipment
• Maintenance and rebuild projects
• Service work requiring original-compatible Fanuc control PCBs

It may also be sourced together with related Fanuc controller boards, servo amplifier modules, spindle drive units, display boards, power supply modules, and other CNC electronic assemblies.

Condition Options

Depending on stock availability, this board may be supplied in:

• New condition
• Refurbished condition
• Used condition

For many customers, refurbished stock is a practical choice because it offers dependable replacement support while helping manage cost and lead time.

Why Customers Search for This Model

Customers usually look for the A20B-8200-0849 when they need:

• A direct replacement for a failed 0i-D main board
• Spare Fanuc stock for critical machines
• Reliable Fanuc parts for ongoing maintenance
• A practical way to reduce downtime
• Support in deciding between replacement and Fanuc repair

In real production environments, having the correct main PCB available can make a major difference when time matters.

Repair and Replacement Support

REACO CNC supports both direct replacement supply and Fanuc repair inquiries. If your original A20B-8200-0849 is damaged, we can help review whether repair is practical or whether replacement is the more efficient choice based on stock, condition, and urgency.

We also support sourcing for related Fanuc parts, including main boards, display boards, interface boards, servo amplifier modules, spindle drive units, and other electronic assemblies used in industrial CNC systems.

Additional Notes

For many factories, machine uptime matters more than anything else. A correct A20B 8200 0849 main PCB can help keep an existing 0i-D system productive without requiring larger changes to the control setup. That makes it a practical option for customers who want to preserve the original system and avoid unnecessary disruption.

Whether you are replacing a failed board, preparing maintenance stock, or comparing replacement against Fanuc repair, REACO CNC can support your needs with dependable Fanuc parts supply and worldwide shipping.

FAQ

What is A20B-8200-0849?
It is a Fanuc 0i-D Main PCB A5 used in CNC control systems.

What does this board do?
It serves as a main PCB that supports internal communication and normal CNC control operation.

Can A20B-8200-0849 be repaired?
Yes. Repair may be possible depending on the board condition and fault type.

Is this board used in Fanuc CNC machines?
Yes. It is used in Fanuc-controlled CNC equipment.

Do you provide worldwide shipping?
Yes. We supply Fanuc parts to customers around the world.

Need pricing or availability for A20B-8200-0849?
Contact REACO CNC for stock status, repair support, and worldwide shipping options.