IBM 6400 Series, Maintenance Manual

Page: 160 / 428

160
Adjustment Procedures
Belt, Paper Feed Timing, Adjustment (Figure 21)
1. Prepare the printer for maintenance (page 158).
2. Cabinet Model: Remove the paper guide assembly (page 235).
Pedestal Model: Remove the top cover assembly (page 210).
3. Cabinet Model: Loosen four screws and remove the barrier shield. (See
page 269, Figure 43, items 3 and 4.)
Pedestal Model: Remove the four screws securing the paper guide and
barrier shield. Remove the paper guide and barrier shield. (See page
271, Figure 44, items 3, 4, and 5.)
4. Remove the timing belt cover (1) by squeezing the front and back to
release the plastic tabs from the slots in the side plate.
5. Loosen (do not remove) the motor mount bolts (2).
6. Using the straight end of a force gauge, apply 15 pounds (66.7 N) of
pressure to the paper feed drive motor (3) near the mounting base of the
motor. Use the splined shaft (4) to steady the gauge.
7. Reduce tension to 12 pounds (53.4 N) and torque the paper feed motor
mount bolts (2) to 18
±
2 inch-pounds (2.03
±
0.23 N m).
8. Snap the timing belt cover (1) into the slots in the side plate.
9. Cabinet Model: Install the barrier shield and tighten the four screws. (See
page 269, Figure 43, items 3 and 4.)
Pedestal Model: Install the paper guide and barrier shield and tighten the
four screws. (See page 271, Figure 44, items 3, 4, and 5.)
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).