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Horizontal Adjustment Knob - The Horizontal Adjustment Knob, shown in Figure 2-8,
shifts the paper left or right up to approximately !/3
inch. This control is used to make fine
adjustments to the left margin. Once adjusted, further adjustments are usually not required.
Figure 2-8. Horizontal Adjustment Knob
Tractors - The paper tractors feed the paper through the printer. The position of the left trac
tor, shown in Figure 2-9, establishes the left paper margin. Normally, the left tractor is posi
tioned for the left print margin (first character position) to align with character column 1 on the
paper scale (on top of the ribbon deck cover). Once properly positioned, further adjustments
are not required unless a change is made to the left print margin. Margins can also be estab
lished by control codes from the host computer. Refer to the Programming chapter. The right
tractor position is adjusted to compensate for various paper widths. Both tractors are locked in
position during normal operation and must be unlocked to make any position adjustment. To
unlock the tractor, simply raise or lower the tractor lock to the center position and slide the
tractor as necessary. If the tractor has screw-type locks, simply rotate the knobs to lock/unlock
the tractor. Once in position, be sure to lock the tractor again.
Operation
2-11
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