HP all-in-one Laserjet 3330 scanner error

This post is here purely to help those who are Googling for a solution to this problem. Everyone else please ignore!

aio.pngIf you have an HP all-in-one 3300-series printer/copier/scanner, and it starts saying “Scanner error power off->power on”, but powering off and on doesn’t help, then you really need this page. Many thanks to all who posted there!

Basically, you power off the printer and unscrew the screw which allows you to remove the small piece of glass to the left of the main scanning glass.

Using some needle-nosed pliers through the opening, grasp the drive belt and use it to move the scanning head across from the right hand side of the scanning area to the left, until it’s right under the opening. At the bottom of the wide slot, there’s a mirror, and it gets fogged up with something.

Shine a good light in there and use dry Q-tips to give the mirror a good clean. Then reassemble everything and turn the printer back on. After a little warm-up, you should get the ‘Ready’ prompt again, and your heart will be filled with joy.

The whole process should only take about 5 mins. There may be other things which cause a ‘scanner error’, but this fixed it for me and, it would appear, for many others.

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105 Comments

Only 11 years after my first post on this forum. And now it’s time again to clean the mirror. (It was 12 years the first time.) Some things are simply timeless and I am super pleased to state “Thanks to the original person who posted this repair” a second time.

This 100% helped! The power unplug didn’t do the trick, but removing the screw and cleaning the glass with a microfiber cloth helped. Completely accurate on the short amount of time it took to complete this process as well. Thank you to the original poster!

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