DesignJet T790

Formatter Board Failure

This error indicates a problem with the formatter board, which is the main control unit of the printer. It often suggests a hardware malfunction that prevents the printer from booting or operating correctly.

System Error: Main PCA Malfunction

This error indicates a problem with the printer's main board (PCA - Printed Circuit Assembly). It's a critical hardware failure that prevents the printer from operating.

Carriage Assembly Failure

This error indicates a problem with the carriage assembly, which holds the printheads and moves across the paper. It suggests the carriage motor, encoder strip, or belt might be faulty, preventing proper movement.

System Error: Carriage PCA Malfunction

This error indicates a problem with the carriage assembly's printed circuit board. This board controls the printheads and their communication with the main PCA.

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.

System Error: Hard Disk Drive (HDD) Malfunction

This error indicates a problem with the printer's internal hard disk drive. The HDD is used for job storage, processing, and firmware functions.

System Error: Front Panel Malfunction

This error indicates a problem with the printer's front panel display or its connection. The printer may still function, but user interaction is limited.

Ink System Error: Ink Supply Station Malfunction

This error indicates a problem with the ink supply station, which delivers ink from the cartridges to the printheads. The printer cannot supply ink.

Ink System Error: Ink Level Sensor Malfunction

This error indicates a problem with the ink level sensor for one or more cartridges. The printer cannot accurately determine ink levels.

Ink System Pressure Error

This error indicates an issue with the ink pressure within the printer's ink delivery system. This can lead to poor print quality or prevent printing altogether.

Ink System Priming Failure

This error occurs when the printer fails to successfully prime the ink system, meaning it cannot draw ink from the cartridges to the printheads. This prevents printing.

Ink System Leak Detected

This error indicates that the printer has detected an ink leak within the ink delivery system. This is a critical issue that can damage internal components.

Ink System Air Detection

This error indicates that the printer has detected air within the ink delivery system. Air in the ink lines can prevent proper ink flow and cause print quality issues.

Printhead Overheating

This error indicates that one or more printheads are overheating. This can be caused by a faulty printhead, insufficient ink flow, or a problem with the printer's cooling system.

Printhead Not Detected

This error indicates that the printer cannot detect one or more printheads. This is often due to improper installation, dirty contacts, or a faulty printhead.

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.

Printhead Temperature Sensor Error

This error indicates a problem with the temperature sensor on one or more printheads. The printer cannot accurately monitor the printhead temperature, which is crucial for proper operation.

Ink System Calibration Failure

This error indicates that the printer failed to successfully complete an ink system calibration. This can lead to inaccurate color reproduction or print quality issues.

Ink Cartridge Type Mismatch

This error indicates that an incorrect type of ink cartridge has been installed in the printer. The printer requires specific HP ink cartridges for proper operation.

Ink Cartridge Expired

This error indicates that one or more installed ink cartridges have passed their expiration date. While the printer may allow continued printing, print quality might be affected.

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 Initialization Failure

This error indicates that the printer failed to properly initialize its ink delivery system during startup. This prevents the printer from becoming ready to print.

Ink System De-priming Failure

This error occurs when the printer fails to successfully de-prime the ink system, which is a process to remove ink from the printheads or tubes, often before service or shipping. This can lead to ink leaks.

Ink System Valve Failure

This error indicates a problem with one of the ink system valves, which control the flow of ink. A faulty valve can cause ink flow issues or leaks.

Ink System Sensor Failure

This error indicates a problem with an ink system sensor, which monitors ink levels, pressure, or temperature. A faulty sensor can lead to inaccurate readings and printer malfunctions.

Ink System Motor Failure

This error indicates a problem with a motor within the ink delivery system, such as an ink pump motor. This prevents proper ink flow and system operation.

Ink System General Error

This is a general error indicating an unspecified problem within the ink delivery system. It suggests a component is not functioning as expected, preventing proper ink management.

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.

Ink System Power Supply Error

This error indicates a critical problem with the power supply specifically for the ink delivery system. This prevents the ink system from receiving power and operating.

Connectivity Error: Network Card Malfunction

This error indicates a problem with the printer's network interface card (NIC). The printer cannot connect to the network.

Connectivity Error: USB Port Malfunction

This error indicates a problem with one of the printer's USB ports. Devices connected to this port may not be recognized.

Service Error: Data Bus Error

This error indicates a problem with the internal data communication pathways (bus) between major components. This is a critical system failure.

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.

Service Error: Component Initialization Failure

This error indicates that a specific internal component failed to initialize during startup. The printer cannot function correctly.

Ink System Error: Trailing Cable Malfunction

This error indicates a problem with the trailing cable that connects the carriage assembly to the main PCA. This cable transmits data and power to the printheads.

Ink System Error: Carriage Latch Sensor Malfunction

This error indicates that the printer cannot detect the correct state of the carriage latch, which secures the printheads. This can prevent printing.

Carriage Error: Service Station Malfunction

This error indicates a problem with the service station, which cleans and caps the printheads. The carriage cannot move freely or the service station is stuck.

Carriage Error: Scan-Axis Motor Malfunction

This error indicates a problem with the motor that moves the print carriage back and forth. The carriage cannot move, preventing any printing.

Paper Handling Error: Take-up Reel Motor Malfunction

This error indicates a problem with the take-up reel motor, which winds printed paper onto a roll. The printer cannot collect printed output.

Hardware Error: Vacuum Fan Malfunction

This error indicates a problem with the vacuum fan, which helps hold the media flat during printing. This can lead to print quality issues or paper jams.

Firmware Error: Critical Firmware Error

This is a general critical firmware error indicating an unrecoverable problem with the printer's operating system. The printer cannot function.

Paper Handling Error: Paper Jam

This error indicates that paper is jammed within the printer's paper path. The printer cannot continue printing until the jam is cleared.