FANUC A20B-0008-0430 CRT/Puncher PCB Board Series 6 CNC Control RS232

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SELLING "AS IS - WHERE IS" AS DESCRIBED

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The FANUC A20B-0008-0430 is a CRT/Puncher PCB (graphics and communications board) used in older FANUC Series 6 CNC control systems. It is commonly referred to as a:

• CRT Interface Board
• Graphics PCB
• Puncher PCB
• RS232 Communication Board

This board was designed for the classic FANUC System 6 controls, especially:

• FANUC 6A
• FANUC 6M
• FANUC 6T

It handles both the display output for the monochrome CRT monitor and communication functions between the CNC and external devices.

What this board does

The A20B-0008-0430 serves several key functions inside the CNC control:

• Drives the 9" monochrome CRT display
• Handles graphics/video output
• Provides puncher/tape reader interface functions
• Supports RS232 serial communication to PCs or DNC systems
• Assists with program transfer and data exchange

In older CNC environments, this was a critical board for loading and transmitting machining programs before Ethernet networking became common.

Common machine compatibility

Typically found in:

• Older FANUC Series 6 CNC controls
• Legacy machining centers
• CNC lathes
• Industrial mills from the late 1970s through 1980s

Often installed in:

• Mori Seiki
• Mazak
• Okuma
• Hitachi Seiki
• Other FANUC-controlled machines

Specifications

• Manufacturer: FANUC
• Part Number: A20B-0008-0430
• Type: CRT/Puncher PCB
• System Compatibility: FANUC Series 6
• Display Support: 9" monochrome CRT
• Communication: RS232 / tape reader interface
• Country of Manufacture: Japan

Note to buyer:

1. Review all photos carefully as they are part of the description per eBay policy.
2. Items that are untested, for parts or repair, or unknown condition are sold as is and are non-returnable.
3. Items are sold as pictured. If it is not shown in the pictures it doesn't come with the item (i.e. power cords, attachments, tooling, etc.)
4. Most listings at the end include a GH and then a number for example (GH119) OR (A19) it is an internal stock reference number and not part of the item's description.

Thanks, GearheadSurplus

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