I have konica c220 : i print a copy there is ligh green .5 inch line in left side and print copy is redness whats reason?

Replace the yellow drum and developer unit

try removing the ink cartrage and clean the heads in the printer with a quetip and rubbing alcohol. same with the cartrages.

Konica Minolta BizHub C252 Repair Questions,... - Fixya

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Konica Minolta BizHub C252 - pale colors on the long side · Konica Minolta. ... I have a Konica C250 machine which cannot print red color at all. I had changed ...

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Aug 22, 2008 - On the right hand side of the drum (the part that has the large green handle) that easily slides out. There is a ..... I have konica minolta bizhub c252 colour printer. ... The K light came on a long time ago and is constant on now.

How to clean the drums/i units on the konica minolta number ...

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How to clean the drums/i units on the konica minolta number plate printer ... Fix or repair color laser printer with fading, lightprint, or lines samsung clp 300 ... Imaging Unit Reset for Konica Minolta Bizhub C203 / C253 / C353

Recommended that you have a tech come out and look at it might have a bad LED assy. for the Magenta Image unit. All other color print OK? Can you print gradation test pattern for each color in service mode? Meter count, details, stop 00 stop 01 Test Output Gradation pattern select magenta. If you open the side cover after printing a document with the color magenta try to catch a print of paper do you see the color magenta on the transfer belt if yes the drum is ok could be the transfer belt magenta 1st transfer roller on the belt replace the belt assy.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

look the transfer belt or drum.remove the transfer belt and clear the sensor

Remove the transfer belt unit,remove the upper cover and used a vacum cleaner,cleaning under transfer belt cleaning belt section.

Some possibilities are:

1) Dirt on the glass, dirt on the glass strip for the doc feeder, or dust on the mirrors. This would be the case if the line only showed when copying and not printing.

2) Toner dropped onto the charge sawtooth.
This may be possible if the line is intermittent and only showed up for 1 or 2 colors.
Open the front door and remove the waste toner box. To the left of each drum there is a green organ-stop type stem. Pull and reinsert each stem. You will hear a zipping noise. These are your charge scrubbers.
This may be not as likely if the line shows up in the same place on all 4 colors

3) Toner or dust on the lens
This may be possible if the line is intermittent and only showed up for 1 or 2 colors.
In the area where the waste toner box goes, look for a grey stick with a white cushion on the end. This is your lens scrubber. Look in the area under the charge scrubber on each drum cartridge for a gap. Insert the scrubber cushion side down into the gap and run it forward and back to clean the lens.
This may be not as likely if the line shows up in the same place on all 4 colors

4) Transfer belt blade not cleaning
This is best handled by a service tech since the mylar belt is very fragile. The squeegee blade that cleans the transfer belt between copies is missing a spot. The blade needs to be taken off the belt, cleaned and repowdered. Recently, Sharp made changes to the composition and thickness of the mylar in the transfer belts. Overpowdering the blade or belt when it was changed may cause improper cleaning of the belt creating lines across the copies. Often the condition clears up after a couple of days as the gap between the blade and belt is sealed.
This is most likely the cause as the line shows up in the same area for more than 1 color.

5) Transfer belt and/or blade is worn out
If the belt is worn the blade must be replaced but not vice versa.

6) Clogged waste augers in the drum cartridges.
Waste toner may cake up in the drum cartridge and knock loose on the drum.

It may be time for full maintenance on the machine.

Sounds like it could be a bit of a label stuck on the transfer belt. Open right side cover and undo the 2 screws located about 2 inches below the fuser, then open left side cover and remove the waste toner bottle and then slide out the transfer belt.
Remove paper and wipe over the belt with a soft damp cloth. If it is a label you will need to use an alcohol cleaner to remove the sticky residue (isopropyl should do the trick)

Good luck

1- power off the printer and make sure the indicator is not red.

2- Remove the drums and waste box
3- Remove the front door by sliding it left after releasing the two stoppers (turning them 90°) and sliding the left hinge to the left (after loosening a screw).

4- Release the green Synchronozing Roller lock levers (2).
Release the black Secondary Image Transfer lock levers (2).
Release the green Secondary Image Transfer lock lever (2).

5- release the sensor assy by turning it 90° and loosen two screws to release the belt.

6- You can now pull the belt out of the printer and replace it with a new one following the reverse procedure.

Open the top cover. Remove the drum (part with long green handle). Below the drum you will see a strip of glass about 4-5 inches long. Take a cloth and wipe across the glass.

This will normally clear up any white lines in your print.