Color registration issue Samsung CLP-775ND

[Guest]

Hello. I recently bought a refurb a Samsung CP-775ND
Color registration is slightly off at the left side (about 30% of the page).
Printer sits on a perfectly level surface, ran auto color registration multiple times, but no changes.
What should I try next, what could be the culprit?

[George J]

Re: Color registration issue Samsung CLP-775ND

I had a couple of faulty transfer units where one of the rollers fell into the unit because the plastic holder broke. Check and / or replace the transfer unit.

[vimann]

Re: Color registration issue Samsung CLP-775ND

Thank you for your reply, replaced the transfer belt but the problem didn't go away.

[Arcadian]

Re: Color registration issue Samsung CLP-775ND

Possibly you have a bad LSU unit, have you tried changing the cartridge?? using third party cartridge is a NO NO for the 775 even though they might work. but Try changing the cartridge with another yellow and see if the problem, persist.

Thank you for your reply, replaced the transfer belt but the problem didn't go away.

[vimann]

Re: Color registration issue Samsung CLP-775ND

Possibly you have a bad LSU unit, have you tried changing the cartridge?? using third party cartridge is a NO NO for the 775 even though they might work. but Try changing the cartridge with another yellow and see if the problem, persist.

Thanks for the reply.
Toners were original, almost new and the defect presented itself on regardless of color in exactly the same way and exactly the same area.
Wasted a day fiddling with manual registration and still there were no improvements.
Bad LSU was my conclusion as well and got rid of the printer.