NOTE 1: Replacing the ink cartridge is the best way to verify cartridge/printer performance. If the cartridge is clogged then a warm water flush may be necessary to recover all colors. If any streaks or missing colors appear on prints, thoroughly clean the cartridge’s electrical contacts and printer’s flex driver cable surface. To view advanced diagnostics tests for your printer, click here: If this doesn’t work the 1st time you may need to repeat 2 or 3 times to ensure relock data clears.

Attempt to send emergency print job thru to printer.

Exit by pressing the Cancel (X) Button.

Using the navigation arrow keys, go to CHECKSUM FOR RELOCK DATA INPUT.

press 4 + # + OK simultaneously, this should display the Information Menu.

The test will print refer to video below to analyze the printed diagnostic pattern.Īlternative Cartridge Error Bypass Procedure (Emergency Printing Only).

Use the arrow keys to enter code = 41 (or just enter 41 on keypad).

Use the arrow keys to navigate to the ‘print-mech tap test’.

Use the arrow keys to navigate to the System Menu.

Enter 124 at keypad (‘Underware’ menu should be displayed).

If any lights are blinking, first press Cancel to attempt to clear.

Load Letter/A4-size paper into paper feed tray.

Support Documentation: HP 901 Problem Resolution (pdf) In this event, printer error bypass and HP diagnostic test procedures have been provided to help you correct and/or diagnose the cause of failure. However, in some cases a marginally performing cartridge might be considered faulty by the printer. Many of the HP 901, 901XL ink cartridge alert and error messages you may encounter using refilled ink cartridges can typically be overcome using the steps provided below. If you observe poor print quality, run the extended self test to evaluate and help resolve degraded ink nozzle performance.

NOTE: “ Empty” and “ Low Ink” alerts are COMPLETELY NORMAL for HP 901 and 901XL ink cartridges which have been refilled! While at first this may be an unusual workflow, it does allow print operations to proceed.

Hp 4500 officejet ink