IBM 3 User Manual page 26

3. Remove the black protective cap (connector tab cap) from the electrical
4. Stand facing the front of the printer. Hold the forms tractor with the tractor
5. With both hands supporting the round tractor shaft, gently push the forms
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4247 Model 003 User's Guide
connector located on the forms tractor.
doors toward you and the electrical connector tab on the right.
tractor upward until
a. The forms tractor clicks on both sides
b. Both forms tractor release levers are in the locked (up) position
c. The electrical connector tab is fully seated in the connector
d. The bottom of the forms tractor is level with (same amount of space from)
the base of the printer