Instruction manual

Belt, Platen Open
147
Belt, Platen Open
Removal
1. Prepare the printer for maintenance (page 106).
2. Cabinet Models: Remove the paper path (page 177).
Pedestal Models: Remove the top cover assembly (page 161).
3. Remove the platen open belt cover by squeezing the top and bottom to
release the plastic tabs from the slots in the side plate (page 228, item
24).
4. Loosen (do not remove) the two 5/16 inch mounting screws of the platen
open motor (page 230, item 15).
5. Push the motor toward the front of the printer to loosen the platen open
belt.
6. Loosen the 1/16 inch setscrew in the platen open motor pulley and
remove the pulley. (See page 230, item 6.)
7. Remove the platen open belt by sliding the belt off the platen open pulley.
Installation
1. Slide the platen open timing belt over the platen open pulley and the
motor pulley. Slide the motor pulley onto the platen open motor shaft and
torque the 1/16 inch setscrew to 11 ± 2 inch-pounds (1.24
± 0.23 N•m).
2. Finger tighten the two 5/16 inch screws securing the platen open motor.
CAUTION 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.
3. Using a force gauge, apply 10 pounds (44.48 N) of tension to the motor
shaft by pushing in the direction away from the large platen pulley.
4. Reduce tension to 5 pounds (22.24 N) and torque the 5/16 inch motor
mount screws to 18 ± 2 inch-pounds (2.03
± 0.23 N•m).
5. Snap the platen open belt cover into the slots in the side plate.
6. Cabinet Models: Install the paper path (page 177).
Pedestal Models: Install the top cover assembly (page 161).
7. Return the printer to normal operation (page 107).