Mitsubishi Elevator MRL Mainboard KCD-1001B

Mitsubishi Elevator MRL Mainboard KCD-1001B is used in Mitsubishi machine-room-less elevator control system applications.

This board is usually requested by the printed PCB model number on the original board. In the elevator spare parts market, it may also be searched as:

• Mitsubishi Elevator MRL Mainboard
• Mitsubishi Elevator Main PCB
• Mitsubishi Elevator Control Board
• Mitsubishi Elevator Main Control Board
• Mitsubishi Elevator PCB Board
• Mitsubishi MRL Control Cabinet PCB

The main model reference for this page is:

• KCD-1001B

Related KCD series references may include:

• KCD-1001C
• KCD-1001D
• KCD-1001E
• KCD-1001-1

These references are useful for search coverage and quotation confirmation. However, different suffixes should not be treated as automatically interchangeable without checking the old board label, connector layout, control cabinet wiring, and Mitsubishi MRL system configuration.

Position in the MRL Control System

KCD-1001B should be treated as a control cabinet PCB for Mitsubishi machine-room-less elevator applications.

MRL elevators have a compact control layout, so board matching usually depends on the exact cabinet structure and system version. A board with a similar appearance may still have different connector definitions, signal functions, or program requirements.

This type of board may be connected with several elevator control areas, such as:

• control cabinet signal circuit
• car and landing signal communication
• display or call signal interface
• controller input and output wiring
• door system signal connection
• inspection or maintenance signal circuit
• elevator operation control logic

The actual function should be confirmed from the old board and its cabinet position before ordering.

KCD Series Markings to Check

Before quotation, technicians should check the full board marking carefully.

The old board may show:

• KCD-1001B
• KCD-1001C
• KCD-1001D
• KCD-1001E
• KCD-1001
• KCD-1001-1

A small suffix difference may indicate a different board version or application configuration. For this reason, KCD-1001B should not be selected only by appearance or by a partial model number.

Do Not Confuse KCD with KCA

One important point is to distinguish KCD-1001B from KCA-1001B.

KCA-1001B and KCA-1001C are often described in the market as Mitsubishi MAXIEZ MRL W1 interface boards. They are not the same written model as KCD-1001B.

When checking the old board, please confirm whether the label starts with:

• KCD
• KCA

This single letter difference is important. A KCD board and a KCA board may belong to different PCB categories or different control cabinet positions, even if the number looks very similar.

Photos That Help Confirm the Correct Board

For accurate supply, please provide:

• full front photo of the PCB
• full back photo of the PCB
• close-up photo of the KCD-1001B marking
• connector area photo
• control cabinet installation photo
• nearby board numbers if visible
• elevator fault description from the maintenance technician

If the old label is not clear, a complete cabinet photo can help confirm whether the required item is KCD-1001B, another KCD-1001 version, or a different Mitsubishi PCB board.

Before Installing a Replacement

Do not replace KCD-1001B only by appearance.

Before installation, technicians should compare the old and new board carefully and check the surrounding cabinet condition, including:

• control power supply
• wiring terminals
• connector oxidation
• communication cables
• related interface boards
• signs of moisture, overheating, or short circuit
• previous repair marks on the PCB

If the original board was damaged by unstable power, wiring short circuit, water damage, or another cabinet fault, replacing only the mainboard may not fully solve the problem.

For overseas buyers, matching the exact PCB number first and confirming the cabinet position second is the safest way to reduce wrong supply before shipment.