KM C360 Rainbows at the edges of scan/copy

[vertigosystems]

Registered after reading this forum for a long time, looks like there's no shortage of seasoned experts here.
I've bought a KM C360 with ~160K copies, I had to replace the exposure lamp because it was broken somehow in shipping. Glass was fine, but the exposure lamp was busted, possibly from taking a huge bump in transit so I can't confirm if the replacement is the cause or the problem was pre-existing.
Attached are some pictures of what I'm dealing with.
More details:

• Cleaned all mirrors/lenses/etc
• Tried every sort of adjustment in the Scan Area service menu
• Checked alignments of carriage and screws.
• Problem started with the Blue rainbow at the top, then after cleaning everything exhaustively, the orange rainbow appeared on the bottom going in the sub direction
• This problem manifests itself with both scanning and copying (one picture below is a scan)
• These are 11x17 prints and the problem is evident on Letter size as well, just not as much for obvious reasons.

It appears to be some kind of light reflection problem, but I can't figure out what it might be.
On the orange one at the bottom, there's still a slight blue haze on the top edge.
I'd be grateful if someone could shed some light on any possibilities.
I also had compared all the settings against a good working C220 that we have at another satellite office which is virtually the same printer, or at least close enough.
Both admin and service menu settings were matched up.
Thanks!

[Woxner]

looks like a mirror is slightly out of place. 458 had a simmular problem hads one do this on 17 inch on 224e.

[Phil B.]

Registered after reading this forum for a long time, looks like there's no shortage of seasoned experts here.
I've bought a KM C360 with ~160K copies, I had to replace the exposure lamp because it was broken somehow in shipping. Glass was fine, but the exposure lamp was busted, possibly from taking a huge bump in transit so I can't confirm if the replacement is the cause or the problem was pre-existing. Attached are some pictures of what I'm dealing with.
More details:

• Cleaned all mirrors/lenses/etc
• Tried every sort of adjustment in the Scan Area service menu
• Checked alignments of carriage and screws.
• Problem started with the Blue rainbow at the top, then after cleaning everything exhaustively, the orange rainbow appeared on the bottom going in the sub direction
• This problem manifests itself with both scanning and copying (one picture below is a scan)
• These are 11x17 prints and the problem is evident on Letter size as well, just not as much for obvious reasons.

It appears to be some kind of light reflection problem, but I can't figure out what it might be.
On the orange one at the bottom, there's still a slight blue haze on the top edge.
I'd be grateful if someone could shed some light on any possibilities.
I also had compared all the settings against a good working C220 that we have at another satellite office which is virtually the same printer, or at least close enough.
Both admin and service menu settings were matched up.
Thanks!

1) LAMP broke
does scanner move smooth?
frame bent?
didn't notice damage when accepting shipment?

seen it on a Canon w/ same issue female accepted shipment.. didn't notice damage to unit

( fell off skid is my guess)

[qbert69]

Registered after reading this forum for a long time, looks like there's no shortage of seasoned experts here.
I've bought a KM C360 with ~160K copies, I had to replace the exposure lamp because it was broken somehow in shipping. Glass was fine, but the exposure lamp was busted, possibly from taking a huge bump in transit so I can't confirm if the replacement is the cause or the problem was pre-existing.
Attached are some pictures of what I'm dealing with.
More details:

• Cleaned all mirrors/lenses/etc
• Tried every sort of adjustment in the Scan Area service menu
• Checked alignments of carriage and screws.
• Problem started with the Blue rainbow at the top, then after cleaning everything exhaustively, the orange rainbow appeared on the bottom going in the sub direction
• This problem manifests itself with both scanning and copying (one picture below is a scan)
• These are 11x17 prints and the problem is evident on Letter size as well, just not as much for obvious reasons.

It appears to be some kind of light reflection problem, but I can't figure out what it might be.
On the orange one at the bottom, there's still a slight blue haze on the top edge.
I'd be grateful if someone could shed some light on any possibilities.
I also had compared all the settings against a good working C220 that we have at another satellite office which is virtually the same printer, or at least close enough.
Both admin and service menu settings were matched up.
Thanks!

Prismatic Artifacting...looks like a mirror might be out of place!!!

Sent from my SM-N950U1 using Tapatalk

[copier tech]

If the scan lamp was broken then clearly the scanner unit has taken a large hit, so could be anything, most likely a mirror out of position.

Worst case the whole scanner has been deformed.

Were any covers crack or broken?

[Phil B.]

If the scan lamp was broken then clearly the scanner unit has taken a large hit, so could be anything, most likely a mirror out of position.

Worst case the whole scanner has been deformed.

Were any covers crack or broken?

Copier Tech ..Qbert69.. seems we all concur on the issue.. I'd be curious to find out what damage..mirror out due to bent frame..clearly or move to make copy.
Yeah should have been claimed.
New scan bed MIGHT be best resolve ?

Also notice OP said "cleaned Mirrors/Lens" DID he clean the WHITE plate and was it intact? ( seen the "label version peal due to heat) How hard were the mirrors pressed on? Did scanner belt/label slip a tad?

Sent from my SM-G960U using Tapatalk

[Gergő]

Hi,

If the mirrors were wrong the damage of the image would be different when try once flom platen glass once from feeder.
In this series (c220-c360) I've replaced plenty CCD boards.

Gergő

[qbert69]

Copier Tech ..Qbert69.. seems we all concur on the issue.. I'd be curious to find out what damage..mirror out due to bent frame..clearly or move to make copy.
Yeah should have been claimed.
New scan bed MIGHT be best resolve ?

Also notice OP said "cleaned Mirrors/Lens" DID he clean the WHITE plate and was it intact? ( seen the "label version peal due to heat) How hard were the mirrors pressed on? Did scanner belt/label slip a tad?

Sent from my SM-G960U using Tapatalk

One of the images....has some red, orange & yellow on the edge, there seems to be some "jitter" or wavy lines which to me looks like the transport is also not flowing smoothly!!!...so perhaps a mirror damaged or slightly out of position AND the transport mechanism racked out of position & slightly sticking. Just my 2 cents worth!!!

Sent from my SM-N950U1 using Tapatalk

[tsbservice]

Do some copies/scans from DF, as other member suggested.
Also copy with zoom in/out and report/post pictures here.

[blackcat4866]

It's out of focus, fitting with your scenario of a big hit. There a lot of ways that the scanner can be out of focus:
The scanner frame can be bent/askew.
one of the mirror assemblies can be bent.
Adjusting the CCD focus might help.

The fact that the glass is intact only means that somebody was smart enough to replace the glass before selling it to you.

I'll tell you a little story. The company I was working for at the time sold some color Sharps to a library (Pegasus series) with an aftermarket modification kit to scan bound books. It involved drilling out the spot welds for the left frame member, and using two sided tape to secure an additional mirror #2/#3 assembly to the scanner. Well we got the whole thing assembled alright, but the focus was horrible, it wouldn't do a color calibration, and the extra mirror assembly didn't want to stay attached. We spent a good week on it, and finally got it focused reasonably well on LTR images but the last 50mm of LGR was pretty bad, and it still wouldn't complete a calibration.

I guess that what I'm getting at is that focus is a difficult thing to adjust without the factory jigs, and if you haven't done it before I would enlist the assistance of someone who has. Current manuals do not offer focus adjustments, so the manual won't be of much assistance.
=^..^=