Mirror Cleaning on HP LJ4200?

We have is two HP LaserJet 4200 printers doing the same thing, they leave a faded pattern of stripes down the page, top to bottom, we have tried different toner cartridges, swapped the fusers from one to the other, and the pattern of the stripes didn’t follow the fusers or the toner carts, we think the mirror in the laser assembly may be dirty, is there a reliable way to clean the mirror?
SCCHISAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

nobusCommented:
wyliecoyoteukIT directorCommented:
Cleaning a laser unit is not a simple job.
Often they are sealed, but the output slit glass may become dirty, and cleaning that may be all you need to do.
Use a lint free cloth and wipe the slit glass (glass covered aperture full width of the printer, above the drum unit).
Stripping and cleaning a laser unit is not a job for ana amateur, and some are impossible to dismantle.
Another cause can be the charge roller being fouled.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Printers and Scanners

From novice to tech pro — start learning today.