OKI Board M5B, OP10ex

When your OKI C5600, C5700, C5800, or C5900 series colour LED printer stops responding to button presses or the display goes blank, the operation panel control board is often the culprit. This genuine OKI M5B board restores full user interface functionality, allowing you to navigate menus, confirm settings, and manage print jobs directly from the printer's front panel.

Key specifications

• Product type: Control board
• Compatible panel: OKI OP10ex operation panel
• Board revision: M5B
• Compatible printer series: OKI C5600, C5700, C5800, C5900
• Function: User interface control, display management, printer communication
• Interface: Ribbon cable connector, button matrix connector
• Display support: Integrated LCD/LED
• Input support: Tactile buttons, membrane switches
• Connectivity: Internal proprietary bus to main printer board
• Power input: DC supplied by printer main board
• Material: FR-4 printed circuit board
• Mounting: Screw-hole compatible with OP10ex panel chassis
• Firmware: Pre-loaded
• Condition: New replacement part

Why choose it

As an original OKI component, this board guarantees exact fit and reliable communication with your printer's main controller. It eliminates guesswork and potential compatibility issues that can arise with third-party replacements, ensuring your printer operates as intended from day one.

Ideal use cases

• Restoring a non-responsive operation panel on OKI C-series printers
• Replacing a damaged control board after liquid spills or physical impact
• Refurbishing used printers to full working condition
• Maintaining a fleet of OKI printers in an office environment

Good to know

Installation is straightforward for trained technicians: remove the operation panel cover, disconnect the ribbon cables, swap the board, and reassemble. The board comes pre-loaded with firmware, so no additional programming is required. Always power off and unplug the printer before servicing.