Facing printing problem there is a black line

[1111khan]

 I am facing printing problem in my HP LaserJet Printer 2606sdw

[Pallipurath]

Hi @1111khan 

Welcome to the HP Support Community.

Thank you for posting your query.

I understand that you are experiencing printing issues with your HP LaserJet Tank MFP 2606sdw, as black lines appear on the printed pages.

Clean the Printer Interior

• Turn off the printer and unplug it.
• Open the toner access door.
• Carefully remove the toner cartridge.
• Use a lint-free cloth slightly dampened with distilled water to wipe away any visible toner dust or debris inside the printer.
• Avoid touching the imaging drum directly with your fingers.

Printhead Alignment 

• Place plain white paper in the tray.
• On the printer’s control panel, go to Settings > Printer Maintenance > Align Printhead.
• Printer prints an alignment page; follow on‑screen instructions.
• In HP App, go to Printer Sttings > Print Quality Tools > Align Printhead.
• Verify – Print a test page. If misaligned, repeat or run a cleaning cycle first.

Update Firmware & Drivers

• Visit the HP Support website.  https://support.hp.com/au-en/products 
• Enter your printer model.
• Download and install the latest firmware update and drivers.
• Restart both the printer and your computer after installation.Update Firmware & Drivers

Hope this helps, Please revert if the issue persists.

Take care and have an amazing day!