This error occurred on a long print run after 100-200 pages. The printer stopped mid print with the Attention light, Ready light, and Go lights all on indicating a service error.
The most common cause of a 10.92 cartridges not engaged error on a Hewlett Packard Color LaserJet 3000 / 3600 / 3800 is broken cartridge locks on the right hand side of the printer. Another possibilty is the slide lever that operates the cartridge locks is broken.
This is just a follow on from my previous post about updating the DC Controller firmware on the Hewlett Packard Color LaserJet 2600 to fix the ghosting fault. Once you’ve fixed your ghosting fault, you can update the main program firmware on the formatter board if you want to.
Image ghosting (image repeating itself down the page) on a Hewlett Packard Color LaserJet 2600 when first switched on or after it has been idle for several hours can be cured by a simple firmware update.
If you get a grinding and knocking noise from a HP LaserJet 4250 or 4350, the problem is the swing plate assembly and / or fuser. The swing plate assembly is a metal bracket with two plastic gears on it and drives the fuser.