Scanner defective

[SOSO93]

The scanner on my printer is defective: every time I make a copy, a large part of the page doesn’t show up. i have a hp deskjet 2820e. I have a message on my app telling me that the scanner is defective 

[Kuroi_Kenshi]

Hi @SOSO93,

Welcome to the HP Support Community!

Thanks for reaching out!

We're thrilled to have the opportunity to assist you and provide a solution.

I understand your HP DeskJet 2820e is showing a “scanner defective” message, and parts of your copies are missing. Let’s go through a few steps to check what could be causing this.

Restart the printer
– Turn off the printer, unplug it for 30–60 seconds, then plug it back in and power on.
– This can reset scanner hardware errors temporarily.

Check the scanner glass and lid
– Ensure the scanner glass is clean, dry, and free of scratches or debris.
– Check the underside of the lid for dust or marks that could block scanning.

Inspect the scanner carriage
– Open the scanner lid and gently move the scanner carriage along its track.
– Make sure it moves smoothly and is not obstructed.

Run a scanner test
– Use the HP Smart app or HP Scan software to scan a simple document.
– This helps determine if the problem is software-related or hardware-related.

Update printer firmware
– Open HP Smart → Printer Settings → Printer Update.
– Updating firmware can fix scanner calibration and detection errors.

Reset the printer to factory defaults
– Go to Setup → Printer Maintenance → Restore Factory Defaults.
– Reconnect Wi-Fi or USB and test scanning again.

Check for hardware failure
– If the error persists and scanning parts of the page continue to be missing, the scanner sensor or carriage may be defective.
– In this case, the scanner assembly may need service or replacement.

I hope this helps.

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