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

[blackcat4866]

My apologies for not posting my fix.

Looking at the PDF that "20gaugeo/u" posted , the springs that apply pressure to the 4 white pressure rollers in the paper feed units are completely useless , old or new. If you look at the rollers on older assemblies you will actually see a gap between them and the upper rubber roller. I believe that roller is supposed to correct any skew from the cassettes. So , I replaced the springs ( 4 ) with springs and caps from the top of 6501/8000 conveying section. Part numbers are " 302K929780 spring " and " 2FM04150 Cap " . The springs are the same diameter but substantially stronger.

This solved my skewing problem, don't bother with new units ( they still skew ) unless they are using stronger springs. I haven't ordered any in a while so I don't know if they are.

Cheers,,,

I used this fix today on an Alphard Gaia (KM-5500i) with 100% success. The center roller has quite beefy springs, but the outer (4) idler rollers are completely limp. The standard springs are 5.5mm diameter coils x 9mm tall uncompressed. I located in my "Miscellany O'Springs" (8) identical 5.5mm dia x 17mm tall. The 3mm paper skew is now 0.00mm paper skew!

Gaia Paper Skew.JPG

It worked on a new ECOSYS P3045DN also. I was getting a 1mm paper skew from all paper sources. This machine has only one spring 7mm dia coil x 15.5mm tall uncompressed (10mm tall fully compressed). I subbed in a 7mm diameter x 18.5mm tall spring (10mm fully compressed). My paper skew is reduced to 0.25mm across the leading edge from all sources. The heavier spring (20mm tall uncompressed) launched the idler roller shaft, making it impossible to install the rollers with that spring.

Kyo P3045DN Paper Skew2.JPGKyo P3045DN Paper Skew3.JPG

Thanks for the great tips! =^..^=

[rey]

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.

try adjusting paper buckle in sim mode. dont remember what sim#

[20gaugeO/U]

We use Springs 302F708310 which is what is holding that center roller in place and the Cap Spring 2FM04150.

4 Springs and 4 Caps per feed port at 50 cents each, fix the skew for $4 a port that you have to do. The bending in unreliable and frustrating.

Good Luck

[tmaged]

Off the top of my head, the 3050ci feed unit doesn't have the grey feed rollers ? They use the sep roller with the built in spring (302F909171) & the frame is all plastic. I have to go back to a 3050ci that is still skewing. Blackcat's holder is the one in the bypass unit. I did repair it the last time I was there, but put the weaker springs in the rear side. I have the updated holders & shafts. Why are there different springs in the front & rear ?

[blackcat4866]

Off the top of my head, the 3050ci feed unit doesn't have the grey feed rollers ? They use the sep roller with the built in spring (302F909171) & the frame is all plastic. I have to go back to a 3050ci that is still skewing. Blackcat's holder is the one in the bypass unit. I did repair it the last time I was there, but put the weaker springs in the rear side. I have the updated holders & shafts. Why are there different springs in the front & rear ?

Not the bypass, the pickup assy. They're called assist pulleys. See attachment from the SM, item #8 in the diagram. Have (8) springs on-hand and you'll be all set.

Why are there different springs in the front & rear ?

I don't understand the question.
Why did the manufacturer install weaker springs at the ends? I have no idea.
Why did I install longer springs? To reduce the paper skew.
=^..^=

[tmaged]

Not the bypass, the pickup assy. They're called assist pulleys. See attachment from the SM, item #8 in the diagram. Have (8) springs on-hand and you'll be all set.
=^..^=

I guess I didn't look at your picture close enough.
I am still almost 100% positive the 3050ci, 3550ci & 3500i don't have the assist rollers in the feed units. They are only in the high speed models. The lower speed models used the plastic framed feed unit that doesn't have the extra rollers.

[blackcat4866]

The photos you see came from a Gaia 5500i. You may be right. =^..^=

[tmaged]

I found Bulletins B213 & D237.

[blackcat4866]

AFAIK every machine from Alphard up uses these assist pulleys. I think it's the exact same drawing.

KM-406ci and KM-5052 do not use these assist pulleys.
=^..^=

[darry1322]

AFAIK every machine from Alphard up uses these assist pulleys. I think it's the exact same drawing.

KM-406ci and KM-5052 do not use these assist pulleys.
=^..^=

Assist rollers and pulleys in the first PDF are only on the 45 and 55 ppm machines. Numbers 7 and 8 in the drawing have asterisks to note.