A16B-2202-0420 Fanuc Power Supply Control A20B21000420 A2OB-21OO-O42O

A16B-2202-0420 | FANUC A16B-2202 Series PCB — 042x Control Board / CNC and Drive Automation Spare

A16B-2202 — A Broad FANUC CNC and Drive Control Series

The A16B-2202 series is one of FANUC's widest-ranging PCB families — confirmed throughout this session across main CPU boards, servo drive PCBs, power supply boards, and wiring boards for multiple CNC and drive generations. The A16B-2202-0420 at the 042x position occupies the lower range of this series:

The 042x range within the A16B-2202 series positions A16B-2202-0420 in the zone preceding the confirmed SVM1-130 and SVM3 servo wiring boards — consistent with a control or PSM-adjacent PCB function within the FANUC CNC and drive architecture.

Key Product Information

Application Scenarios

CNC or drive control board fault: A FANUC CNC or drive system develops a fault traceable to the A16B-2202-0420. The board is identified from its part number label. Replacement restores the specific control function.

Planned maintenance spare: A production facility maintaining FANUC CNC or drive equipment stocks A16B-2202-0420 as a spare for the specific system in which it is installed.

FAQ

Q1: How do I confirm A16B-2202-0420 is the correct board for my FANUC system?

Read the part number from the installed board's label. If it reads A16B-2202-0420, this is the confirmed replacement. Cross-reference with the applicable FANUC CNC or drive maintenance manual's board layout and spare parts list to confirm the slot position and function.

Q2: What FANUC CNC or drive platforms use A16B-2202 series boards in the 042x range?

The A16B-2202 series is confirmed across multiple FANUC CNC generations and Alpha-series servo drives. The 042x range sits adjacent to the confirmed SVM1 servo wiring board range (045x), suggesting the 042x zone serves a related control or power supply interface function. Confirm the specific platform from the host system's documentation.

Q3: Does replacing A16B-2202-0420 require CNC data backup?

This depends on the board's specific role. For servo drive wiring or control boards, servo parameters remain in the CNC main memory and are not affected by board replacement. For control-level boards, confirm from the applicable maintenance documentation whether data backup is required.

Q4: What ESD precautions apply to A16B-2202-0420?

Handle with a grounded anti-static wrist strap on an ESD-safe surface. Store in anti-static packaging. Power down the system completely before accessing internal boards. For servo drive applications, verify the DC bus is discharged before accessing internal components.