9-22
Phaser 440 Color Printer
9
Checks and Adjustments
Drum belt tension adjustment
This adjustment should be made whenever the drum or drum belt has been
removed or replaced or if horizontal banding is detected that is due to drum belt
tension.
1.
Power down the printer.
2.
Remove the left-side cabinet panel. Refer to the Chapter 8 topic
“Printer cabinet panels” on page 8-4.
3.
Loosen the upper and lower drum belt tensioner set screws one half
turn each. The tensioner spring will automatically adjust the belt to
the correct tension.
4.
Rotate the drum pulley in the clockwise direction so that it rotates at
least one full revolution. This evens out the tension in the two drum
belts.
5.
Hold the belt tensioner in its position and tighten its screws to secure
it in place. Tighten the lower drum belt tension set screw, then tighten
the upper screw.
6.
Reinstall the cabinet panels.
Tools required
■
#1 POSIDRIV® screwdriver
Figure 9-5 Tensioning the drum belt
9015-26
4
Drum belt
tensioner
3