Print horizontal lines

While printing 4 black lines are formed horizontally in same length. please help me. I removed and reassembled the toner & refilled the powder too. still I have the same problem in Xerox phaser 3117.

Does the line repeat, if so tell me what the distance it between repititions. I need the EXACT measurment in millimeters preferably but inches will do.

Try this link:!view-content/ViewContent/View/contentId/x_3125_en-O1114

I called Xerox and it seems that it's because the imaging unit is defective. They are seeding me one free of charge. Hope you can do the same...

Restart the printer and the computer.
This might be a problem because your data cable is not fully inserted into the computer/ and or the printer.
Make sure that it is connected fully.