*&%&%& 3050ci with skewed image.. HELP

[Geo]

Hi Folks...
Hope I can get some help/ ideas for my problem
Have a 3050ci that gives skewed output on all cassettes and bypass , most noticeable on 11 by 17. Lead edge is OK ,trailing edge and sides are off. U034 test pattern confirms skewing. The skewing is consistent. Not 100% sure ,but the image on the transfer belt seems skewed.
I have tried the following without success.
U051
Reg Roller
Holder middle pulley with modification and new springs
k-Laser unit
Entire paper conveying unit
Transfer belt.
entire laser assy.
Tried adjusting(left side of copier) laser assy without any change.
Removed, cleaned and re-seated all dv and drum units.
Adj color reg manually and auto...AND flashed firmware
At this point I have run out of things to try and the customer is PISSED....ANY help,ideas or suggestions would be much appreciated
THANKS.

[blackcat4866]

Re: *&%&%& 3050ci with skewed image.. HELP

I've seen this issue on several occasions. To re-iterate, the leading edge is perfectly square, and the image warps to the front or back. My samples were 10mm off square at the trail edge of ledger.

On Kyocera Falcon II: Enduser slamming the door causes broken interlock cover. The broken pieces fall down into the pre-registration mylar.

On Kyocera VoyagerE: Uneven fixing pressure.

On Kyocera Saturn: Labels fed from tray #1, left throughout the machine, especially on the registration roller.

On KM bizhub C360: Transfer assembly is unlatched at the rear.

On KM bizhub C452: Heavy toner buildup on fuser inlet guides.

On KM bizhub C454e: Labels adhered to the inner registration roller rear.

On e Studio 452: Inadequate loop setting for tray #2 and #3.

On e Studio 352, 2500C, 3540C: Broken rack gear on tray #1 rear paper guide.

On Sharp AR-M160: Paper cuts appear in the paper tray guides.

=^..^=

[Geo]

Re: *&%&%& 3050ci with skewed image.. HELP

Hi Blackcat

Thanks for the tips, good stuff, unfortunately the entire paper path has been checked by multiple people.
The box has 98K Color and 15K Black. Tech support is giving me the skew is within spec excuse. For the customer it's unacceptable and I have looked at other copiers and they are perfectly squared. We have spent 30+ hours banging our heads on this.....VERY frustrating.

[copydocinc]

Re: *&%&%& 3050ci with skewed image.. HELP

Just throwing this out there.
How about the door? Maybe front or rear latch is loose or where the door hinges could be screwy.
This would of course end up effecting the pressure on a number of conveyance rollers.

[Ctl-Alt-Del]

Re: *&%&%& 3050ci with skewed image.. HELP

How much skew do you have at the trail edge of the 11x17?
Is it off by the same amount on both corners at the trail edge
Any blur on the image at the trail edge when compared to the lead edge?

[blackcat4866]

Re: *&%&%& 3050ci with skewed image.. HELP

I looked at a KM-3551 recently that was 1.5mm skewed down the length of ledger. Technically that is just within specs. On the Alphards you'll find a skew adjustment in the paper tray. You loosen 4 screws in the cassette base, then use a cam to rotate the entire guide/rack gear assembly slightly, then tighten the screws. Using this adjustment, I was able to correct it down to 0.5mm. Not as good as I wanted, but satisfactory for the customer. =^..^=

[Geo]

Re: *&%&%& 3050ci with skewed image.. HELP

Just throwing this out there.
How about the door? Maybe front or rear latch is loose or where the door hinges could be screwy.
This would of course end up effecting the pressure on a number of conveyance rollers.

Hi
I actually replaced the entire door assy with a known good one. No change and I even tried different springs for the front and rear idle rollers.

Thanks

[Geo]

Re: *&%&%& 3050ci with skewed image.. HELP

How much skew do you have at the trail edge of the 11x17?
Is it off by the same amount on both corners at the trail edge
Any blur on the image at the trail edge when compared to the lead edge?

The lead edge is spot on, the trail edge if off by 1.5 mm and the entire image shifted to one side by about the same amount. No blurs.

Thanks

[Geo]

Re: *&%&%& 3050ci with skewed image.. HELP

I looked at a KM-3551 recently that was 1.5mm skewed down the length of ledger. Technically that is just within specs. On the Alphards you'll find a skew adjustment in the paper tray. You loosen 4 screws in the cassette base, then use a cam to rotate the entire guide/rack gear assembly slightly, then tighten the screws. Using this adjustment, I was able to correct it down to 0.5mm. Not as good as I wanted, but satisfactory for the customer. =^..^=

Hi
Tried adjusting the paper trays. No change and the image skew is consistent from all the trays and MPF. Yes "technically" the image is within specs.....However ,the customer is printing full color edge to edge posters(20-24lb paper) and the skew is very obvious, furthermore the customer insists that the skew is recent.

Thanks

[GUNit]

Re: *&%&%& 3050ci with skewed image.. HELP

Hi
Tried adjusting the paper trays. No change and the image skew is consistent from all the trays and MPF. Yes "technically" the image is within specs.....However ,the customer is printing full color edge to edge posters(20-24lb paper) and the skew is very obvious, furthermore the customer insists that the skew is recent.

Thanks

if the image is skewed on the transfer belt then you can discount paper feed. if internal prints are skewed then discount optics which leaves engine more than likely laser, maybe not seated correctly or an adjustment on the Lsu itself. if the paper feed is proven then maybe once the paper has the first inch or so of the image which would make the lead edge not skewed then maybe something on the fuser or exit kicking the paper to one side? but it all comes back to why is the image skewed on the transfer belt? good luck please post back with fix.

[Geo]

Re: *&%&%& 3050ci with skewed image.. HELP

if the image is skewed on the transfer belt then you can discount paper feed. if internal prints are skewed then discount optics which leaves engine more than likely laser, maybe not seated correctly or an adjustment on the Lsu itself. if the paper feed is proven then maybe once the paper has the first inch or so of the image which would make the lead edge not skewed then maybe something on the fuser or exit kicking the paper to one side? but it all comes back to why is the image skewed on the transfer belt? good luck please post back with fix.

Hi
I replaced the K laser unit, no change , than swapped the entire laser assembly (frame with lasers), no change. AND tried a new fuser, no change....What you are saying about the skewed image on the transfer belt is bugging me the most and I think is the key to the problem, that's why I tried the K laser than the entire assy.

Thanks

[GUNit]

Re: *&%&%& 3050ci with skewed image.. HELP

Hi
I replaced the K laser unit, no change , than swapped the entire laser assembly (frame with lasers), no change. AND tried a new fuser, no change....What you are saying about the skewed image on the transfer belt is bugging me the most and I think is the key to the problem, that's why I tried the K laser than the entire assy.

Thanks

just wondering what its like if you do single colour cyan or magenta will it be skewed as there are 4 individual lasers just wondering now if someone has maybe been playing with the allen screws on the front of the laser accessible behind drum and dev unit cover as if my memory serves me right adjusts the angles of the laser mirrors. if skewed on transfer it can only be laser unless the belt is wandering off somehow, hope this helps

[Geo]

Re: *&%&%& 3050ci with skewed image.. HELP

just wondering what its like if you do single color cyan or magenta will it be skewed as there are 4 individual lasers just wondering now if someone has maybe been playing with the allen screws on the front of the laser accessible behind drum and dev unit cover as if my memory serves me right adjusts the angles of the laser mirrors. if skewed on transfer it can only be laser unless the belt is wandering off somehow, hope this helps

It's on all colors, that's why I swapped the entire laser assy with a known good on. I was told be tech support that the K laser image is used as a reference point for all the colors and image. That's why at first I replaced the K laser.

Thanks

[NeoMatrix]

Re: *&%&%& 3050ci with skewed image.. HELP

Is the machine sitting on level ground/floor eg. uneven tiles ?

Has the main frame of the machine been twisted updown or skewed sideways during transport?
Has the entire machine been carelessly lifted/dropped on one corner of the machine ?

I'm thinking with a bent main frame the rego-rollers might not be sitting exactly linear, and may be moving the copy paper to the front/rear side during conveyancing.

[Geo]

Re: *&%&%& 3050ci with skewed image.. HELP

Is the machine sitting on level ground/floor eg. uneven tiles ?

Has the main frame of the machine been twisted updown or skewed sideways during transport?
Has the entire machine been carelessly lifted/dropped on one corner of the machine ?

I'm thinking with a bent main frame the rego-rollers might not be sitting exactly linear, and may be moving the copy paper to the front/rear side during conveyancing.

Hi
The floor is level and according to the customer output was normal after installation. Also the copier is sitting on the 3k paper deck.We pulled the copier and gave then the same for a loaner and the loaner is working perfectly. I keep thinking that the image was not completely square to the paper from jump street ,but the customer swears that output was perfect until several months ago..VERY FRUSTRATING...

Thanks