[Misc] TA-250ci Color shift problem

[Magicone]

Hello folks,
This machine has a color reg. problem, it appears. The problem only show up if the "media type" is set to anything heaver than "normal 3" (card stock, label). It has the problem from all paper sources. It has the problem if it is printed, or copied, or from a file on a thumb drive.
So, far I have:
Updated firmware to V10
Turned color reg off then on in u467
Ran 464, ac cal,color calibration, color registration.
NO change.

Replaced Eng PCB,
Flashed again, setup color again.
Same result.

Since the color reg is good when the media type or weight is set to Normal 1,2,3 I would think the color setup is correct.

Anybody have any thoughts.

My thoughts Belt? Laser? or ?

Thanks for reading.

[Frits]

try this en test agian

run u119
run u412
run u464
switch machine off/on
run drum refresch
run developer refresch
run color calibration
run color registration
run gray scale

[Magicone]

Thanks

Will try next week. Access to machine is limited.

Just wondering what your reasoning for this is, since the color prints and copies are perfect in the "normal 1 2 3 " setting?

[Frits]

it solved my problem with color shifting
also check what settings U487 are on is it in mode 2 or auto

[Magicone]

u486

u 486 is set to mode 2

Will try ur fix and let you know.

Thanks

[blackcat4866]

How heavy is heavy media? This machine is rated for 60 - 220g/m2 from the MPT, or 60 - 163 g/m2 from the cassettes.

I've dealt with this issue on Okidata color printers before. The thing I discovered is that media that exceeds the maximum recommendations starts to experience color registration issues that get worse the longer the paper is. For example, 11" x 8 1/2" shows registration issues becoming noticeable ~6" from the leading edge. By the end of 11" x 17" registration can vary over 1/2 ".

If the media exceeds manufacturer recommendations there's nothing to fix. =^..^=

[Magicone]

Blackcat re media. It does not matter what paper you put in the machine. May be my fault in explaining.
The problem shows up if you put 20 lb paper in the bypass and tell the machine it is a label or card stock. When you have a media type set in the machine that is more that Normal 3, the blurr appears. The work around we did was to create a custom media type of Normal 3, and print on card stock, with the print driver set to custom 1.

[Magicone]

update

Ok we did Engine PCB ,re flashed , NG
replace Lazer, NG
replace Belt, NG
replace Main PCB, NG

Whats left?

[blackcat4866]

As long as you don't exceed 28 lb stock, your workaround should be fine. Heavier media with not fuse properly, and the toner will come off in chips.

If this works for you great, but there will be limitations to how heavy a media you'll be able to pass without fixing issues. =^..^=

[Magicone]

Yes the work around is sort of ok, but they can not run heavier card stock because it will not fuse properly.
We have the higher powers at work, now they are saying, "maybe a bad cable" somewhere(lol). I am in Canada,so there are more bumps in the road for support. Time will tell. Customer may through machine back at us before that happens.