Given this, I assume the scanner box is what has failed. Restore factory default settings: Now unclip the front edge of the top surface, with the two large clips down where the buttons were these are hard to unclip – use a small screwdriver to “lift” each clip while lifting the surface a bit. Avoid getting water on the electronics boards, carriage, and motors not all that hard. Front Panel – Front panel assembly – includes lcd and actuator buttons.

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However I have finally managed to solve it again after one last ditch attempt before totally junking it. Until recently, the scan function was working fine.

If you have ever had the glass off of the scanner and looked at it from the bottom you will see ‘Home’. The G85 would make a copy, then the light would go out on the scanner head’s return trip and the “scanner failure” message would be displayed. I would like to take it apart in a manner described above, but a different printer may mean a different method of tear down.

Flag ADF – Photo-sensor assembly – includes the sensor and mounting bracket – paper pickup roller home position sensor – activated by the sensor flag on the pickup roller assembly – mounths on the front frame of the ADF paper pickup assembly.

Pry them apart with a slot y85 screwdriver.

There are two push latches on the underside that release the rear cover and allow it to hinge upward and then scannet removed. It’s maybe a nF one, just putted here to help the 8L12A to have a cleaned power supply during high drain current. Wiper – Wiper assembly – Metal base with plastic wipers. The Virtual Agent is currently unavailable. Our G85 would “grind” when scanning but not when copying.


Read posts today, removed top cover, removed blue belt, scanner, and glass top, cleaned all, replaced scanner bar to see white line, and printer is like new again!

HP Officejet g85 All-in-One Printer User Guides

Thanks very much for you help. I used the oil on the scanner rod and tested again, but alas I still get the scanner failure. I took the G85 completely apart again and cleaned out the “service station” ecanner tank assy. When it does so it likes to print a single line at a time then wait maybe 20 or 30 seconds before it moves on to print the next.

Just recently my usual cleaning of the glass failed to clear up the problem.

HP Officejet G85 (and others) “Scanner faliure” repair guide | Electronics Forums

Cindy Wells Level 3 Expert Answers. If you don’t, then there’s a problem with the motor or it’s jammed – see below. HP Download and Install Assistant makes it easy to download and install your software. Those are the 2 that are commonly used on OfficeJets.

The scanner optics have to see the white strip.

Officejet g85 scanner failure on screen and cannot fax more than 1 page at the time.

I took the scanner apart second time and cleaned the disk attached to the motor and it works like new. If you respect this, you won’t do anything wrong enough to damage further your AIO.


Well anyways I got it all opened up opened the top of the scanner assembly and found the real problem. PC Board – Ink cartridge carriage assembly pc board – includes carriage pc board only.

Remove any original documents or photos from the scanner glass.

Turn power off then on again. I did the right thing.

HP Officejet g85 All-in-One Printer – Driver Downloads | HP® Customer Support

This is not a service manual for technical repair. One or more of the values entered is not permitted.

The screws are “torx” and are available in the tools of most retailers including department and scannr parts many taillights use torx – unknown. Carriage Latch Cover – The carriage latch is used to keep the cartridge s in place. You’ll need a normal cross head maybe philips to do that. Door – Pen access door assembly – Lift up access door for changing print cartridges – Includes door and latch.