IBM 6400 series Maintenance Manual page 230

Installation
1. Position the platen open motor assembly with the wires toward the rear
(page 285, Figure 50).
2. Install the two 5/16 inch motor mount screws (and nuts, if present) finger
tight.
3. Install the platen open belt and motor pulley. Bottom out the motor pulley
on the motor shaft and tighten the setscrew to 9
0.23 N m).
4. Connect the platen motor cable connector to connector shell P106.
5. Connect shell connector P106 to J106 on the controller board. Install
tie-wraps to secure the motor cable. (See cable routing diagram on page
306.)
6. 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.
7. Using a force gauge, apply 10 pounds (44.48 N) of tension to the platen
open motor shaft by pushing away from the large platen pulley, reduce
tension to 5 pounds (22.24 N) and torque the motor mount screws to
11
8. Snap the platen open belt cover into the slots in the side plate.
9. Cabinet Model: Install the card cage fan (page 216).
10. Cabinet Model: Install the paper guide assembly (page 235).
Pedestal Model: Install the top cover assembly (page 210).
11. Return the printer to normal operation (page 159).
230
2 inch-pounds (1.24 0.23 N m).
Replacement Procedures and Illustrated Parts List
2 inch-pounds (1.24
ATTENTION