Good afternoon all,
We just bought a refurb C451 with a folder/stapler, and I've been having some trouble which perhaps you recognise.
BW prints seem to come out fine, but whenever I print colour there's black banding or complete coverage on the page. See image:
- Utskrift 1: First colour print - banding / coverage
- Utskrift 2: BW - looks fine
- Utskrift 1: First colour print - banding / coverage (different from print 1)
All prints are duplex, but the same thing happens when I do single pages. I've replicated this a couple of times, and the only difference between the prints is whether I choose bw or colour. Printed from a mac, colour management on printer. I have gotten OK colour prints sometimes, so this is the most fabulous sort of error: intermittentus annoyus
Here's my thinking:
- If this was a result from toner spill after transport, it should appear on the BW prints as well
- if this is a problem with the document or driver, the faults should be consistent in print 1 & 3
Since the machine is a refurb we only got 3 months machine warranty on it, and I'm chasing the company to fix this – but if I can narrow the problem down perhaps I can get this solved faster. I'll refrain from doing any firmware or hardware tinkering since that might risk invalidating our warranty, but if it's a question of tightening a screw I might give it a go.
I've gone through all C451 posts in the forums but not found anything which I think describes my problem. Please let me know if I've missed a post.
There's nothing on KM:s "common print quality problems" page [link] which seems to match either.
I'm not a service tech but I've poked enough printers and machines to not be completely lost, but I hope you bear with me if I lapse in my knowledge of jargon or somesuch.
Any help greatly appreciated!
Cheers / M