Cleaning The Underside of an HP's Scanner Glass

This is instructions on how to disassemble the top portion (scanner and Document Feed) of an HP Laserjet 3030.

The problem: Photo scans were having streaks in the image.
Cause: Wires connected to the scanner element dragging across the glass - these wires appear to be coated with some sort of light lubricant
Solution: Disassemble -- clean glass

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Tools
T-10 Torx Bit <--- if you're buying a torx set, I recommend that you buy a tamper evident set just in case you need that feature later ;)

Awl or something with a pointy edge
Glass Cleaner and chamois
Rubbing Alcohol

Step 1 Remove Screws and Keypad Cover

Turn off and unplug your machine ;)

There are 5 T-10 torx screws that need to be removed -- see photo notes below. Remove them and store in a safe place.

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The keypad cover is held in by friction and several tabs located at the top of the pad. Pry from the bottom of the cover and lift straight up. When the pad releases - pull up and away (towards your body) and guide the keypad off.

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You'll notice that my machine is still on at this time. I was hoping I would not need to remove anything wire harnesses and keep the machine running while I did the fix (my parent's business needs this machine up to receive faxes).

Comments

[niitesh]

http://factoidz.com/how-to-clean-a-scanner-glass/

A step to step guide on how to clean the scanner glass

[Harch]

Awesome... thanks so much for this. Worked like a charm.

[lanimoomoo]

 Great instructions!  Managed to clean out an ant colony living in the scanbed.

[TBC47]

That is exactly the info I was looking for. Couldn't get it from HP. Thanks for the help.

[TBC47]

After reading the instructions again, and checking out my printer, I realized that the HP 3010 in the instructions, and my printer, an HP 3310, don't disassemble in the same manner. I took the lid off (unconnecting the light cord), and found 5 T-10 torx screws, 3 on the top back, and 2 on the top front. But, since the key pad is a "swing out" type, nothing else worked. I found that I could lift the scanning bed, but couldn't find a way to disconnect it. I did find that there was just enough room to get my hand in there and clean the bottom of the glass. So, with the loss of a little blood from all the sharp edges, I was able to accomplish the cleaning. Thanks for giving me the confidence to try this. I appreciate it.

[kadnk68]

I was given a hp all in one printer that didn't work. All I had to do was clean the underside of the glass and it started working again.

[Captain Pedantic]

Wow, timing! I just got around to cleaning my scanner last night. I was turning the thing over and over trying to figure how it came apart before I noticed two screws in the slots where the lid hinges attach. That was all that held it together.

[LasVegas]

Very good instructable. This is something that needs to be done periodically on any scanner. I've known a number of people that go out and buy a new scanner when this is all they needed.