Replacing an ADF Unit Assembly

Posted on 2011-03-03
Last Modified: 2012-05-11
The automatic document feeder unit assembly on my HP OfficeJet Pro L7680 AIO printer  needs to be replaced.  I have located the replacement part (C8189-60005) but I need instructions on how to install it.  HP Technical Support says they don't have those instructions, and refers me to my local Authorized HP Repair Center.  The Repair Center says they only service laserjets because inkjet printers are "consumer serviceable."  I would appreciate a link to documentation on how to replace this part.
Question by:ddantes
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LVL 27

Expert Comment

ID: 35037918
I'm looking for a walkthrough, but from the picture I come up with for the part number you give, it sure looks like it is the complete top assembly.  I think you should be able to just unscrew the hinges on the old, unplug the wiring connector, then hook up the new.

Or, if it is only the ADF frame that was ordered, take a look around page 154 of the manual for this model.  It includes steps on removing the ADF frame (for cleaning), it may help you some:


I can't seem to put my hands on a walkthrough, sorry.  Could you include a pic of the ADF you received, soI can get a handle on how much of the top lid (which in its entirety is really the ADF) needs to be removed and taken apart?


Author Comment

ID: 35038395
Thank you for your comments.  I have located the part, but haven't ordered it.  I'll embed a photo. ADF unit assembly
LVL 27

Accepted Solution

michko earned 125 total points
ID: 35039535
okay, I cannot find a decent part breakdown or service manual anywhere for this model.

So, I'll just do my best and see if it helps.

Up to you whether or not you want to take off the entire folding top piece.  it may make it easier to work on if you do, but then again it is one more thing you have to put back together.

There will be a flip cover that covers the piece you have above.  You MAY need to remove that, should just be some clips, or possibly c-clips around the hinge area for the cover.

there should be a center screw holding the piece you show to the lid, pretty much top center of your pic.  Remove that screw.  I can't tel lif there are other screws, but none are apparent.  there may be some around the sides that I'm not seeing.

At that point you should be able to (gently) pull the sides apart and lever the assembly up and out.  Note - if it seems to be sticking, then check for screws or clips that weren't released.  

Remove it carefully, then un-plug the electrical connectors.  Install in the reverse.

I wish that was more detailed, but is all I can come up with.  

Best of luck.
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Author Comment

ID: 35039683
Thank you for your insruction.  The top center screw which you mentioned (and one on each end of the top of the assembly) has a six-pointed concavity which will not accept a Phillips screwdriver.  Can you recommend a tool for this?
LVL 27

Expert Comment

ID: 35040088
The most likely possibility is a torx head, although a hex is also possible.

This link should let you identify which type of screw head it is, then is is just a matter of picking up a set - you should be able to do this at any hardware store (and many auto stores).


Author Comment

ID: 35040148
Great.  Thanks for all your help.
LVL 27

Expert Comment

ID: 35040494
You're welcome. Really wish i had a full blown walkthrough for you.  If you run into problems, just post here, I'll still answer.

thanks for the close and generour grade :)

Best of luck.

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