Automatic Forms Thickness Adjustment (Afta) - IBM 4247 Maintenance Information

Apply
Force
Here
Figure 53. Paper Feed Belt Tension Lever. (Viewed From Right Side)
Adjustment
1. Loosen the 2 screws that mount the tension lever.
2. Use the push-pull scale to push on the lever to tension the belt to 0.55 to 0.75 kg (1.2 - 1.6 lb).
3. Tighten the front screw first, then the rear screw.

Automatic Forms Thickness Adjustment (AFTA)

The Automatic Forms Thickness Adjustment (AFTA) allows the printer to maintain a consistent distance between
the printhead and the face of the forms. Maintaining this distance (or gap) allows the printer to produce correct
print darkness, properly feed forms, and sustain printhead-drive operation. There are two service check and
adjustment procedures one may use with AFTA. There is a procedure that is relatively short and simple to
perform: the Quick AFTA Service Check and Adjustment, and then there is the "Standard AFTA Service Check and
Adjustment" on page 285. It is recommended that one perform the "Quick" procedure first; if the results are not
favorable, proceed then to the "Standard" procedure.
Attention: Do not attempt any adjustments, loosen any screws, or perform any steps until instructed to do so.
Front
Screw
Rear
Screw
Chapter 5. Removals and Adjustments
282