Platen Open Belt Adjustment - Printronix

P9212 Maintenance Manual

Platen Open Belt Adjustment

1. Open the printer cover and the rear door.
2. Remove the RPF belt cover (1) by squeezing the top and bottom to
release the plastic tabs from the slots in the side plate.
3. Loosen the platen open motor mount screws (2).
4. Place a reusable tie–wrap (3) around the platen open motor (4), leaving
enough slack for inserting the force gauge.
5. Close the forms thickness lever all the way.
Too much tension on the platen open belt can cause the platen gap to
change, which can lead to premature wear of the platen, damaged
hammer tips, and poor print quality.
6. Hook the right–angle end of the force gauge (5) through the tie–wrap
and apply 5–6 pounds of tension to the platen open motor by pulling the
gauge in the direction opposite the forms thickness lever.
7. Hold 5–6 pounds tension on the force gauge and torque the motor mount
screws to 20 inch–pounds.
8. Remove the reusable tie–wrap from the platen open motor.
9. Snap the RPF belt cover into the slots in the side plate.
10. Close the printer cover and the rear door.
5–24
(Figure 5–10)
CAUTION
Adjustments