Half the page fades to white

mine is doing the same it gets twisted cutting off the air supply. I unwind it and lubed it but it continues to happen. there seems to be some sort of spring on the inside at the based. i'm thinking of cutting the tie straps and seeing whats inside...

this is a typical problem.. this printer uses a carasol meaning that the toners are riding on a carasol there are 2 white gears that drive the carasol 1 on the right and one on the left. Half page fade is almost always a misaligned carousel! A Tech is needed or a service manual here is a link for the manual http://www.partshere.com/Models/Q3948A/CLJ_2820_Removal_replacement.pdf
look at figure 5-78 Removing the print-cartridge carousel you will see the white gears im talking about

I’m happy to help further over the phone at https://www.6ya.com/expert/ron_9356d26241d4cbf7

Im having the same problem
did u find a cure

From the service manual:

If the light printing is on the left side of the page, the carousel might be dislocated.

Solution: Verify that the print-cartridge carousel drive teeth are aligned correctly. If the teeth are aligned correctly, replace the print-cartridge carousel.

I have the same prolem...Do you just reselve?

www.neonlightceilingfanstyles.co.cc/hampton-bay-ceiling-fan-instruction-manuals/ - 18 hours ago

printing only the right half of the drum

you need to replace the coolant in the cRts. You can get the coolant replacement kit at the following link under the repair kit category. Its called phillips CRT coolant replacement kit. It contains all the coolant you need and the step by step proceedur on cd with pictures so you can do the job yourself. Heres the link.
http://servicemanuals.vstore.ca/

try to recalibrate the cartridge carousel. the central axel is twisted. there are more than 2 problems like this arownd...

hmmm...did you get new printer drivers when you re serviced machine..

www.hp.com

sort of like changing the fluids after an engine job

check your computer warranty here 4 FREE