FANUC A20B-8100-0820 LCD Graphics Control PCB

Overview

The A20B-8100-0820 is a graphics and LCD control PCB used in standalone FANUC FA-LCD display assemblies.

Listings describe it as an LCD display driver and as an LCD control PCB for i-B series standalone units, with application references to Series 15i, 16i, and 18i systems and to 10.4-inch FA-LCD units for Model B systems.

This board sits on the display-control side of the CNC hardware.

In practical service work, that means it is selected by the exact display-board role already installed in the machine, because the operator interface depends on the original graphics-driving and display-interface structure.

Matching the same model helps preserve the existing LCD unit architecture and the same display-board family used in the control.

Technical Data

Applications

This board is suitable for installed FANUC CNC systems where the operator display already uses a standalone FA-LCD unit with the A20B-8100-0820 graphics-control position.

It is especially relevant in display-board replacement, LCD-unit repair, and refurbishment where the original operator interface needs to remain aligned with the same board family.

Replacement Guidance

Before ordering, confirm the installed board code, verify that the display assembly uses the same standalone FA-LCD structure, and check that the original graphics-control position is A20B-8100-0820.

On display-control boards, exact model continuity matters because the board is tied directly to the LCD interface and graphics-driving layout already used in the machine.

FAQ

Q1: What kind of board is A20B-8100-0820?
It is an LCD graphics control PCB used in FANUC display assemblies. The board is described as an LCD display driver and as an LCD control PCB for standalone i-B series display units, which places it in the display-control section rather than in the CPU, I/O, or servo section.

Q2: Why is the LCD display driver description important?
Because that description defines the board’s installed function. A board identified as a display driver is tied to the screen interface and image-handling side of the operator unit, so replacement should preserve that same hardware role.

In practice, that is one of the most important checks when restoring an existing LCD assembly.

Q3: Which controls is this board commonly associated with?
Listings connect it with Series 15i, 16i, and 18i systems, and one listing links it directly to a 10.4-inch FA-LCD unit for Model B systems.

That gives the board a clear installed-base context in FANUC i-series display hardware.

Q4: Is this a complete LCD unit or only the board?
It is the board that supports the LCD unit rather than the full display assembly itself. Listings describe it as the graphics driver or LCD control PCB, which means it belongs inside the display hardware and should be matched to the correct existing LCD unit already installed on the machine.

Q5: What should be checked before buying?
Check the installed part number, confirm the display hardware uses a standalone FA-LCD unit, and verify that the original graphics-control board is A20B-8100-0820.

It is also useful to confirm the related control family and display size already installed in the machine.