Xerox Phaser 3150

Troubleshooting
7-14
7.3.10 Printed Vertical Lines Become Curved
Description: When printing the vertical lines are not straight.
Possible Cause Sequence of Repair Actions
1. The +24 V supply to the laser unit is faulty. a. Use the DCU test 05 to test the laser motor.
b. If the voltage is stable, replace the laser
unit.
c. If the voltage is not 24 volts, replace the
SMPS.
d. Replace the main board.