This problem occurs when the paper guide has been improperly adjusted, and the paper thickness lever is in its full forward position. It can also occur if the paper deflector (076-0008) is defective.
In order to correct this problem try reinstalling the paper guide according to the procedures in the ImageWriter II Technical Procedures. If the problem still occurs then it may be necessary to replace the paper deflector. After performing the adjustment verify that the paper deflector no longer moves when sliding the carriage back and forth.