I need some HP Officejet repair assistance that HP apparently can not provide: I have e-mailed several times this week without receiving a response, and used the 24/7 on-line help to fuel my growing frustration.

I have located the on-line partsurfer catalog for the OfficeJet K80 (C6750A). Unfortunately it does not provide instruction or a finer detail of the assembly to understand how to install and tension the cam with the spring in the printer paper tray assembly floor.

I need to re-install the cam and spring in the paper tray assembly of an Officejet - k80 (C6750A)

Spring # c6426- 40012
Cam # c6426- 40064

http://partsurfer.hp.com/cgi-bin/spi/main?targfrm=&sel_flg=partpic&pic_flg=part&partnum=C6426-40064&psval=&wupart_flg=&model=C6750A%2F51A&HP_model=C6750A&modname=OfficeJet+K80%2FK80xi+%28C6750A%29&dealer_id=&rightnav=search&cpric=us&mod_flg=&stype=&hotspot=&whichpic=X&popup_flg=&picture=&template=main&uniqparts=&callingsite=

This appears to be a simple procedure, but the correct placement of the spring to provide the cam tention eludes my common sense intuition.

I used HP’s on-line assistance believing they would be able to provide me with a web link to the detail I could use to repair the printer. The script relayed to me after I explained the problem, "because it is a hardware problem you must visit your local service center, what is your zipcode?".

I left the office and discovered the local service center was a Radio Shack storefront. The polite staff were ready to take a deposit and ship the printer at my expense to a national center. Unfortunately this address given to me by the 24/7 I now believe was to brush me off with the implied suggestion of purchasing a new printer, instead of dealing with the hassling in shipping an older printer for repairs.

Instead I am looking for a fine detail drawing, or written instructions on how to install the cam and spring, it looks like a simple procedure that any person with a bit of patience and a steady hand should be reasonably expected to perform.

However I could be wrong, maybe this installation might require removing the entire paper tray assembly but I would not believe a competent engineer would be allowed to design a consumer product with these trappings.

Viewing the drawing it looks like:

1. The spring has a coil, and one arm has a hook to catch [so as to pull back when deflected (so it applies a force trying to return it to its non-tensioned position)] the "spring loaded lever" = "Drawer Cam", and the other arm no doubt pushes against the larger surrounding casing or component to achieve this force.
Is there a spindle about which this lever rotates?
I'd expect to see the coil around that spindle [if it exists] [with the larger hooked arm on the lever].
Otherwise how is the spring to be positively located in position so it cannot move out of position?

Any chance you can take digital photo's, put them up at www.photobucket.com and post the addresses of those photo's here so we can see them?

Sorry, I have been away. I will take a photo or three for you, but that is not going to solve the situation. I still cannot locate a method to take the case off the printer to expose any clearance below the floor of print tray floor where the spring can be loaded on the cam.

I can print several pages; before the printing vibration will back the paper tray out so a paper jam or failure to load paper error will occur. Scotch tape will prolong that event far less costly than shipping it to HP, via a Radio Shack storefront service center....

I can replace the printer for less than shipping it to HP, but this printer is one of the last ones to have any ink storage, so I am not replacing the ink cartridges every other day.