Specifications

Main Drive Belt — Removal, Replacement, and Adjustment
1. Turn the printer OFF and remove the AC Power Cord.
2. Refer to Figure 5.19 and rotate the Ribbon Take-Up Pulley until the three
holes in the pulley are aligned with the three mounting screws which hold
the Ribbon Take-Up Spindle Assembly to the Printer Frame.
3. Use a 9/64” Allen wrench to reach through the holes in the Ribbon Take-Up
Pulley and loosen, but do not remove, the three Spindle Assembly mounting
screws.
4. Slide the Ribbon Take-Up Spindle Assembly to the right to relieve the
tension on the Main Drive Belt.
5. Remove the old Main Drive Belt and install the new one.
6. Hook a 2200 gram Spring Scale to the belt as shown in Figure 5.19, and
carefully slide the Ribbon Take-Up Spindle Assembly to the left to increase
belt tension.
7.
When a scale reading of 2000 grams ± 250 grams (4.5 lbs ± 0.5 lbs) creates a
deflection of 1/4″, tighten the three mounting screws to a torque of 20
inch-pounds.
SPRING
SCALE
2200
2000
1800
1600
1400
INCHES
1
2
3
ACCESS TO
MOUNTING
SCREWS
Figure 5.19 Main Drive Belt Replacement
S -Series Maintenance Manual: Volume 1 Corrective Maintenance
38452L Rev. 3 Page 5-31