Remove the small glass pane of the left side of the scanner bed. You onlt need to remove one screw. Push the driver belt which will move the scanner to the left. It can be a little tricky to move the scanner the last little bit so you may need needle nose pliers or someone with a hook (I used a fork) to pull the scanner last little bit. Once the scanner is in the open spot where you removed the glass panel, simple take a q-tip and clean the mirror.
Extend to a Solurion #1 If youo can't move it to to the end, just turn on machine, and when it moves to a good position, turn it off again (you can do this several times, until you have a proper position.
Yes there is a fix.
Firmware and Clean optics.
There are a couple internet posts for the problem.
To reset the scanner turn on until the scanner move, then unplug do this 3-4 times about 35sec ea then let the machine do a complete restart(takes a little while) If the problem comes back clean optics and do firmware update
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Here is a link to a file from the HP web site. This explains how to open your scanner assembly and clean the scanner mirrors. These instructions are provided as-is. I have used them to repair many of these units with your problem, but because of the technical difficulties in opening your printer and performing the repair we accept no responsibility. You can download the instructions here, www.ccl-la.com/hplj3330.htm
no you cannot print on both sides automatically.you have to give the prints 2 times.at first the paper will print on 1 side then insert the same paper in the printer and give the remaining printout and it will print on the back side of the same paper.as you can do it manually but the automatic printing on both side facility is not in HP Laserjet 3330 printers.
This problem has to do with the scanner mirror. You may hear a grinding sound, also. The reason it does this is because the scanner bulb cannot find 'home', so it keeps trying to find it. Well, it uses the mirrors to reflect on another object inside the scanner to tell it when to stop. The mirror on top of the right next to the scanner bulb may need to be cleaned. This works every time for me, except the same problem always comes back sooner or later. how to clean- 1.unplug your scanner 2.notice the glass covering on the left side, it can be removed with a Phillips screwdriver. Unscrew the plastic surrounding the glass and then remove the glass covering. 3.Plug the scanner back in and wait for the scanner to move left and then unplug it before it starts moving to the right. Repeat this until scanner bulb is all the way on the left of the machine. -an alternative method- with the glass covering removed, use a pair of pliers to move the small belt that moves the scanner bulb. keep moving it until the scanner bulb is all the way on the left of the machine. 4.With the scanner bulb assembly in reach, grab a Q-tip and gently clean the mirror that is just to the right of the bulb. You might want a flashlight to see the dirt and dust. 5. Put the glass covering back on. 6. Plug in the scanner. At first to me it seemed like it wouldn't work, but it does. Hope it helps. Reply back if it does.