Bambu Lab Toolhead Board for X2D

The Bambu Lab Toolhead Board for X2D is an original replacement electronic control board designed specifically for the Bambu Lab X2D toolhead.

Also referred to as the TH Board, the DLB064 controls important extrusion-related functions including filament feeding, unloading, retraction, and hotend temperature regulation. It forms a central part of the X2D toolhead electronics and works together with the printer's other toolhead boards, sensors, extruders, and hotend assemblies.

It is suitable for replacing a confirmed faulty or physically damaged original Toolhead Board during X2D repair or maintenance.

Key Features

• Original Bambu Lab replacement Toolhead Board

• Part number DLB064

• Designed specifically for Bambu Lab X2D

• Controls filament feeding and unloading functions

• Supports filament retraction control

• Supports hotend temperature regulation

• Central electronic component within the X2D toolhead

• Includes four BT2×5 mounting screws

Central X2D Toolhead Electronics

The X2D toolhead contains several motors, sensors, heaters, and interface boards that need to operate together during printing.

The DLB064 Toolhead Board coordinates important functions associated with filament extrusion and hotend operation.

Its functions include control related to:

• Filament feeding

• Filament withdrawal / unloading

• Retraction

• Hotend temperature adjustment

• Extrusion-system operation

Reliable operation of this board is therefore important for normal X2D printing and filament-change workflows.

Filament Feeding Control

During printing, the extruder must deliver filament to the hotend at a controlled rate.

The Toolhead Board forms part of the electronic system responsible for managing this extrusion process.

A fault affecting this area may contribute to symptoms such as:

• Filament not feeding correctly

• Extruder not responding

• Loading or unloading failures

• Abnormal retraction behavior

• Toolhead-related error messages

These symptoms can also originate from other components, so proper diagnosis is important before replacing the board.

Filament Loading and Unloading

The X2D performs automatic filament loading and unloading during normal operation and compatible material-management workflows.

DLB064 supports the associated toolhead actions required to move filament into and out of the extrusion system.

This is particularly important during:

• Initial filament loading

• Filament replacement

• Material changes

• Automatic unloading

• Retraction operations

Hotend Temperature Regulation

The Toolhead Board also forms part of the system responsible for hotend temperature control.

Stable temperature regulation is essential for:

• Correct filament melting

• Consistent extrusion

• Reliable layer bonding

• Preventing abnormal temperature conditions

• Maintaining the selected filament profile

If the printer reports heating-related toolhead faults, the heating assemblies, wiring, connectors, temperature sensors, connection boards, and Toolhead Board may all need to be checked before identifying the failed component.

Designed Specifically for X2D

The DLB064 is designed around the electrical architecture of the Bambu Lab X2D.

Its:

• PCB layout

• Connector arrangement

• Mounting points

• Firmware integration

• Toolhead interfaces

are intended specifically for the X2D.

Toolhead boards from other Bambu Lab printer models should not be assumed to be interchangeable.

Separate from the Connection Boards

The X2D toolhead uses several different circuit boards.

Toolhead Board – DLB064

• Main toolhead control board

• Controls extrusion-related functions

• Supports filament feed, unload, retraction, and temperature regulation

Hotend Heating Assembly Connection Board – DLB065

• Provides interfaces for components including the extruder, filament sensor board, eddy-current coils, and front toolhead components

Extruder Connection Board – DLB066

• Separate interface board used within the X2D extrusion system

These components perform different functions and should not be confused when ordering replacement parts.

Useful Replacement Part

Replacement may be appropriate when troubleshooting confirms problems such as:

• Physically damaged Toolhead Board

• Burnt or damaged PCB components

• Broken connector sockets

• Persistent extrusion-control faults

• Filament loading or unloading faults traced to the board

• Hotend-control faults traced to the board

• Electrical damage following toolhead servicing

The Toolhead Board should normally be replaced only after checking the associated wiring and connected components.

Technical Specifications

Applications

• X2D toolhead repair

• Extrusion-system repair

• Filament feeding fault repair

• Filament loading and unloading troubleshooting

• Retraction-control repair

• Hotend temperature-control troubleshooting

• Replacement of damaged PCB

• Printer refurbishment

• Print farm maintenance

• Service-centre spare-part inventory

Compatibility

Compatible with:

• Bambu Lab X2D

This DLB064 version is specifically intended for the X2D toolhead.

Do not assume compatibility with:

• Bambu Lab H2D

• Bambu Lab H2C

• Bambu Lab H2S

• Bambu Lab P2S

• Bambu Lab A2L

• Bambu Lab A1 Series

• Bambu Lab P1 Series

• Other Bambu Lab printer families

Package Includes

• 1 × Bambu Lab Toolhead Board for X2D – DLB064

• 4 × BT2×5 Screws

Installation Note

Switch off the printer and disconnect it from mains power before servicing the toolhead.

During replacement:

• Allow the hotend to cool completely

• Remove the required toolhead covers

• Record or photograph the original connector positions

• Disconnect connectors by holding the connector housing

• Do not pull directly on the wires

• Avoid touching PCB contacts unnecessarily

• Install the replacement board in the correct orientation

• Secure it using the supplied BT2×5 screws

• Reconnect every plug completely

• Check that no wires are trapped or pinched

• Reassemble the toolhead before restoring power

Follow the official Bambu Lab X2D service procedure when replacing the Toolhead Board.

Troubleshooting Note

A toolhead or extrusion error does not automatically mean that DLB064 has failed.

Similar symptoms may also be caused by:

• Loose connectors

• Damaged cables

• Extruder faults

• Hotend heating assembly faults

• Hotend Heating Assembly Connection Board faults

• Extruder Connection Board faults

• Filament sensor problems

• Toolhead wiring damage

• Other toolhead electronic components

Diagnose the complete toolhead circuit before replacing the board.

Usage Note

This product includes the X2D Toolhead Board DLB064 and its mounting screws only.

Hotend heating assemblies, DLB065 connection board, DLB066 extruder connection board, extruders, sensors, fans, cables, hotends, and other toolhead components are not included unless separately specified.