I just purchased the printer yesterday so brand spanking new. Set up went smoothly (I am using with a mac) but all printouts have fine white hairlines across in bands about 10mm apart. I have tried the different nozzle cleaning/print head alignment functions, used different types of photo paper, printed tests from photoshop, illustrator and quark, changed the file type from jpeg to tiff, cmyk and rgb but all outputs have fine white lines no matter what I do. Please help.
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You don't need to do head alignment, because it is for vertical banding in printout. Vertical banding can be minimized by disabling high speed option without doing head alignment.
If your printout have horizontal white lines, do check nozzle and head cleaning, or you can minimize white lines by printing in best quality (photo).
open printing preferences and click on maintenance. Run the print head alignment utility. Sometimes this will remove the horizontal banding. I had this same problem and had to uninstall the printer and reinstall just like it was new, running the alignment feature before it was corrected. Worked ok for a few days then started again. I assumed that the printhead is bad. To costly to repair and bought a new printer.
Most likely cause is that a roller has degraded during storeage. Measure the distance from the centre of the first band to the second and from the center of the second band to the third. If this dimesion is fairly constant you can work out exactly which roller is causing the problem.
The most likely culprit will be the Photo Conductor Unit. This will give a large dimension - (approx the 29cm??)
A service manual should give you the dimensions (circumferences) of the rollers within the machine. If you have a spare pcu around, put it in and see if it makes ANY difference.