Blue line scan from document feed to computer. No problem from scanner glass

[FXA]

My HP 9020 starts to show blue vertical line when scanning to computer and printing. There is no issue when scanning from the Scanner glass to computer or printing.

I have Lenovo Laptop X1 win 10, 64 bits.

[sandytechy20]

@FXA

Welcome to the HP support community.

Clean the plastic and glass strips inside the document feeder with a soft, lint-free cloth sprayed with glass cleaner.

1. Turn the printer off, disconnect the power cord, and remove the battery if your printer has one.

2. Depending on your printer model, open any top cover, document feeder tray, and scan document feeder cover.

3. Remove any debris such as bits of paper or paper clips from inside the document feeder.

4. Spray a soft, lint-free cloth with glass cleaner, then wipe the scanner glass and the white strip on the underside of the document feeder until clean, dry, and streak-free.

      CAUTION: 

   To protect the interior printer parts, do not spray the cleaner directly on or into the printer.

5. Completely close any covers and trays that you opened.

6. Reconnect the power cord, reinstall the battery if necessary, then turn on the printer.

7. Load the original document or photo. Make sure the original document or photo is in good condition and free of tears, creases, folds, staples, or tape.

8. To avoid skewing, adjust the guides on the document feeder to remove any gaps next to the edges of the paper and the guide. The paper stack should slide easily into tray and not bind against the guides.

You can refer this HP document for more assistance:- Click here

I hope that helps.

To thank me for my efforts to help you, please mark my post as an accepted solution so that it benefits several others.

Cheers.