Description
📌 FANUC A20B‑3300‑0303 — 7.2″ Monochrome LCD Video Control Module
Description:
The A20B‑3300‑0303 is a video/display control module within the FANUC A20B‑3300 series of CNC control PCBs. This board is specifically designed to drive and manage the 7.2‑inch monochrome LCD display used as the operator interface in compatible FANUC CNC controllers.
Key Features:
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🖥️ Display Type: Designed for 7.2″ monochrome LCD screens (black‑and‑white display).
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🔌 Function: Acts as the video/graphics control board — responsible for generating the display signals and interfacing the CNC controller’s internal graphics data to the LCD panel.
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📊 Application: Used in FANUC i‑Series modular CNC controllers (e.g., older 16i‑B, 18i‑B, 21i‑B and similar models) where a separate display control PCB is employed.
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🧩 Module Series: Part of the A20B‑3300 family of modular control boards that include CPU, display, axis control, and other system modules.
Typical Use Case:
This board is installed into the control electronics rack/backplane of the CNC controller and works with the main CPU and other interface boards to output the operator interface visuals — such as machine status, program data, alarms, and menu screens — on the attached 7.2″ monochrome LCD display.