New Toner white line middle of page

[11CW56]

Since replacing my toner cartridge there is a white line from the top to the bottom of the page.

Brand new HP 138x  toner

[Max3Aj]

Hi @11CW56, Welcome to HP Support Community. 

Thank you for posting your query, I will be glad to help you. 

A white line running from top to bottom of the page after replacing the toner cartridge in your HP LaserJet Pro MFP 3101fdw printer suggests a possible issue with the toner cartridge, drum unit, or fuser. Here are some troubleshooting steps to resolve it:

Check the Toner Cartridge

Since you recently replaced the toner:

• Remove the toner cartridge (HP 138X).
• Shake it gently side to side to redistribute the toner evenly.
• Inspect the cartridge for damage or leaks. If the drum (green or blue roller) has visible scratches or marks, the cartridge may be defective.
• Reinstall the cartridge and try printing again.

Print a Supplies Status Page

• On the printer’s control panel, go to Setup > Reports > Supplies Status and print the report.
• Check the toner level and if there are any reported issues with the cartridge.

Inspect the Drum Unit (if separate from the toner)

If your printer uses a separate drum unit, check for any debris, toner buildup, or scratches. If it's defective, replacing it might be necessary.

Clean the Printer Internals

• Open the printer and check for toner residue or paper debris.
• Use a dry lint-free cloth to gently wipe the toner roller and laser scanner area.

Perform a Cleaning Cycle

• Go to the Printer’s Control Panel
• Navigate to Setup > Service > Cleaning Page
• This will clean internal components.

Try a Different Toner Cartridge

If the issue persists, the new toner cartridge might be defective.
 

I hope this helps. 

Take care and have a good day. 

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping! 

Max3Aj

HP Support