If you are getting banding (left to right) the width of the printer or feed direction.
1. Make sure your basic test print is not missing lines. A few are ok and will still print fine but if you get a couple together you will notice. See drop out. If you do the (fill) test print, in service menu, you will notice where the missing lines are in the solid fill test print. Because when you print most things you use all the colors to make color, those missing spots tend not to be see. If you set your color to 100% C,M,Y or K you may see that line in those areas.
2. Make sure you have done your Bi directional adjustment in the menu. I like to use service menu, head adjust and do Head Adjust>Test Print. This does the bias and directional test prints. Make sure your bias is lined up within that 1/2 line or better if you can.
1. Make sure your basic test print is not missing lines. A few are ok and will still print fine but if you get a couple together you will notice. See drop out. If you do the (fill) test print, in service menu, you will notice where the missing lines are in the solid fill test print. Because when you print most things you use all the colors to make color, those missing spots tend not to be see. If you set your color to 100% C,M,Y or K you may see that line in those areas.
2. Make sure you have done your Bi directional adjustment in the menu. I like to use service menu, head adjust and do Head Adjust>Test Print. This does the bias and directional test prints. Make sure your bias is lined up within that 1/2 line or better if you can.