DC Pump Assy DH-40001 | Original Mutoh Printer Part

The Mutoh DH-40001 DC Pump Assembly is an original Mutoh replacement part that keeps the ink system on the XPJ UF series running efficiently. It is central to printhead maintenance and waste ink management.

Key Details

• SKU: DH-40001
• Condition: Brand New
• Brand: Mutoh® (Original Product)
• Part Type: Ink Pump Assembly
• Compatible Models: XPJ-461UF, XPJ-661UF
• Function: A vital component of the printer's maintenance system. During printhead cleaning cycles such as head cleans or purges, this pump is activated to pull waste ink through the printheads and transfer it into the waste ink tank.

Maintenance Note

A weak or failing DC pump shows up as incomplete cleaning cycles, nozzle drop-out that does not recover after a purge, or ink backing up in the waste line. If cleaning cycles have stopped restoring the nozzle check, the pump is worth inspecting before replacing the printhead.

Related Symptoms

The DC pump is listed in the Mutoh service manual as a possible cause when cleaning cycles fail to clear clogged nozzles or ink discharge is skewed, when a specific colour is missing, when images print unevenly, and when unwanted dots (satellites) appear on the print.