minolta cf 2002

[cristian]

I have a big problem with a colour minolta cf 2002.
It seems that on the copy are two images ;one with black and blue , and one with red and yellow ,5 mm distance one from the other , perpendicular on the exit paper direction.
More precise , the stripe colour test for black and cyan is 5 mm under the stripe test for yellow and magenta.The yellow and magenta image is well placed on page in a simetric position.
The colours are good.No particular sounds on the machine.The single problem that i have noticed is that the sensors 4,5,8 are NG and not OK.
The problem was begin after the operator has played with the machine controls,"to see what s happened if"...I have tried to reconstruct his moves , but it seems that he has run also the stabilisation mode.
All the colours settings are at 0 point.The machine runs only in copier mode.With the colour shift i can not move the colours 5 mm to their original places.In the service manual i have not find any indications how to move the colours on an A4-R up with 5 mm.
I have designed how it looks the test page (A4-R)in the attachment.

[mrwho]

I'm not exactly sure of what's happening from your description - can you scan a couple of test prints and post them here?

Either way, if it's caused by your operator playing around with settings, you could try - after slapping him, of course - calling the default adjustments in tech rep mode to see if it will place everything back where it belongs.

[8050]

Try a factory reset of machine that should put everything to default

[cristian]

1.Seems to be 2 images one over the other.One image with red and yellow colours , the second image with black and blue, but the image with back and blue at a distance of 5 mm from the one with red and yellow.If we superpose the images we obtain a good , clear coloured image(as we look with cross eyes).I have talk with some technicians , sems that nobody have not seen yet this problem at a copier machine.
2. I have try also to reset the factory settings, but the problem remain.
3. The single thing that i see wrong at the machine is that the sensors 1,4,5,8 are marked NG and not OK as the others.I have cleaned the sensors , but they are remain NG.The mechanic of the machine seems to be oK, and if i could solve the problem with those two images , the copy wil be satisfactory.
4. I send in the attachments 2 copies of the test.I will try tomorrow to make some better ones and i will send you.
Thank you.

[cristian]

P.S.
1. I have checked in the tech rep mode all the settings.All of them are in the 0 point (in the middle).Any way the guy after he did what he did , he has push th stabiliser button...
2. I have try to push the black-blue image up but from the settings the maximum that i could do is to move the image half mm. to the corect position.Is any setting who could move the black and blue image up and perpendicular on the paper exit direction with 5 mm?
The red and yellow images are in the correct position on the paper (A4-R), 5 mm simetric from the up and down edges.The blue and the black positions are: from 1 cm from the upper side and 0 mm from the down side.
Some ideeas?

[Blenk]

its still hard to tell what the fault looks like from these images, but it looks to me like its the yellow and magenta images that are out, you must be getting (P codes) because it can not set up correctly, this will point you in a number of directions that could be misleading, i would check that the yellow and magenta units are sitting at the correct level over the LEDs, this it set by small pins at the front and rear of the LEDs, you can see the ones at the front real easy, i have had these bent or missing, seems strange that it is 2 colours its usually just one, but this would give this exact effect, and when the machine goes through its warm up it cant set up, so gives you all of these (P codes) the P codes are listed when you press the little oil can like thing on the screen.

[Si@danwood]

Also try adjusting the fuser speed down to minus 2 had a similiar and fixed it stone dead..Si

[cristian]

1) SY@DANWOOD/ Even if it is not logic(cause the image was formed allready wrong before the fuser) i have try to move the fuser sped to minus 2.Nothing heapenned.
2)BLENK .Indeed i have 2 codes : P21 all the time , and sometimes appear also P27 .What can i do with those informations?
I have checked the pins, there are OK.I have cheked once more the LED bars , seems to be OK.
I have received a phone call from one of my friends, who told me that it could be possible that the developper from the units (black and blue) isn't good anymore.But, this will affect the quality of the copy , i do not believe that it could influence the position of the colours on page. Unfortunatelly i have not in the area another M 2002 to check the units...
Also he told me that the M 2002 is not a laser base machine.So , he told me that could be a problem of optics..., but the gy who has make this mess, told me that he has not touch the optical part.Remains 4 choises:
1. Black and blue units gone..(but instantlly and both of them?)
2. Sensors malfunction...
3. Adjustments wrong done...
4. The P codes...??
But the problem has appear immediately after an wrong adjustment , so it can be undone by repeating some machine adjustment in the oposite way...

[pepper38_cnd]

This is from the SSD, I don't know if it applies to you but have a look.

[8050]

Hm, do a 8 color test pattern and take a note on what color is shifting. From your samples it looks like magenta, could be magenta IU is bad and not cleaning properly, it can cause a double imaging problem that may look like color shift issue.