To adjust the margins for the printer:
Turn off the printer (switch is on right side, near the rear)
Press both the 3 and 6 button at the same time and turn the printer on. Keep pressing until the Diagnostic menu is up
Go to REGISTRATION , press select and it will display the Top (T), Bottom (B), Right (R) and Left (L) margins. To change the margins, change the number. Decreasing the number will cause the margin to increase (i.e. lowering the top margin will push the printing down.