Description
📌 FANUC A20B‑8001‑0920 — LCD Backlight Inverter Board / Inverter PCB
Part Number: A20B‑8001‑0920
Type: Printed Circuit Board (PCB) – LCD inverter / backlight power board
Application: 10.4″ LCD monitor / display backlight inverter for FANUC CNC controls.
🛠️ Function & Role
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This board is an LCD backlight inverter that provides the power and control for the backlight of a 10.4‑inch LCD display used in FANUC CNC systems.
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It is part of the HMI/MMI/OIT (Human Machine Interface / Operator Interface Terminal) display electronics — specifically designed to power and regulate the LCD panel’s backlight for proper brightness and operation.
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Commonly used with FANUC Series 16i, 18i, and 21i control displays that feature a 10.4″ LCD screen.
⚙️ Typical Usage
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Installed inside the machine’s display unit (LCD monitor/MDI panel).
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Works alongside the main display logic board and panel interface boards to ensure the screen is correctly powered and visible during machine operation.