DesignJet 755cm

System Error: Power Supply Unit (PSU) Malfunction

This error indicates a problem with the printer's power supply unit. The printer is not receiving stable or correct power, preventing it from functioning.

Front Panel Failure

This error indicates a problem with the front panel assembly, which includes the display and control buttons. It might be a communication issue or a hardware failure.

Printhead Voltage Error

This error indicates an issue with the voltage supplied to the printheads. Incorrect voltage can damage printheads or prevent them from firing properly.

Ink Cartridge Low/Empty

This error indicates that one or more ink cartridges are low on ink or empty. The printer will prompt you to replace them to continue printing.

Ink System Fan Failure

This error indicates a problem with a fan responsible for cooling components within the ink delivery system. Insufficient cooling can lead to overheating and damage.

Internal Heater Failure

This error indicates a problem with an internal heater element, such as a pre-heater or post-heater. These heaters are crucial for preparing media and drying ink.

Ink Cartridge Authentication Failure

This error indicates that an ink cartridge cannot be authenticated by the printer. This can be due to a non-HP cartridge, a faulty cartridge chip, or an authentication system issue.

Service Error: Non-Volatile Memory (NVM) Failure

This error indicates a problem with the printer's non-volatile memory, which stores critical settings and calibration data. The printer may lose settings or fail to boot.