Fanuc CPU PCB for 16i/ 18i/ 21i A20B-3300-0330

A20B-3300-0330 is a display control PCB (CE Card 1) used in CNC systems from FANUC.

📌 Description

• Part Number: A20B-3300-0330

• Board Type: CE Card 1 (Control/Extension card)

• Function: Display control board for a 10.4-inch color LCD used in the CNC operator display system.

⚙️ Main Function

This PCB is installed inside the CNC display unit and is responsible for:

• Controlling the 10.4-inch color LCD screen

• Processing display graphics and signals from the CNC control

• Communicating between the CNC main CPU and the display panel.

🧩 Typical CNC Systems

The A20B-3300 series boards are commonly used in FANUC CNC systems such as:

• FANUC 16i

• FANUC 18i

• FANUC 21i controls.

🧠 Simple Summary

A20B-3300-0330 = CE Card 1 display control PCB for a 10.4″ color LCD used in FANUC CNC operator display units.

✅ If you want, I can also explain the related boards used with it, such as:

• A20B-3300-0320 (CE Card 2)

• A20B-8001-0920 (LCD inverter board)

These three boards normally work together inside the FANUC display unit.