Afta Power Off Checks - InfoPrint 4247 Z03 Maintenance Information

v Print needles have worn down from usage and the print head gap setting produces too small a gap
for proper forms feeding and carriage motion.

AFTA Power Off Checks

Perform this check if the AFTA indicator wheel, motor, gears, carriage shaft, or platen have been removed at any
time for service. This section will verify that these hardware pieces are correctly located and moving smoothly
without binding.
This check verifies the position of the gap indicator wheel (wheel), and the manual operation of the mechanism for
smooth and complete rotation. Use the wheel as an indicator as you adjust the distance between the print needles
and the platen. Each numeral change on the wheel represents 0.1 mm (0.004 in.) change of AFTA gap. The
numbers '0' through '6' are printed on the wheel, but the numbers can be considered to go beyond the '6' to an
implied number of '13'. When all adjustments are correct, the AFTA Indicator Wheel will adjust to point to '1' when
single part 20 lb. (80 gram/m
1. Verify the smooth rotation of the indicator wheel.
v Power off and remove the ribbon.
v Hand-cycle the wheel to a higher value, until the mechanical stop is against the frame. This is the full-open
gap position. The travel of this rotation should equal about 10 to 11 numbers on the wheel. The travel
through the entire range must be smooth and free of any binding as you rotate the wheel between the
full-open and full-closed positions.
If you feel any binding check the intermediate gear (gray) and the wheel gear (white) for damaged teeth.
Replace parts, as needed.
Ensure that the motor is not pushed upwards too much against the intermediate gear. Loosen and retighten
the motor screws; this allows the motor to fall away from the intermediate gear.
2. Check the ends of the (large) carriage shaft for correct adjustment.
v If the carriage shaft is too tight, you will notice binding at the frame.
v If the carriage shaft is too loose, you will notice clicking at the frame when you grasp the carriage shaft and
attempt to move it up and down.
How to correct the location: To achieve the correct adjustment, loosen the 2 screws of the carriage shaft
retainer to relieve the bind. Bias the carriage shaft retainer toward the lower carriage shaft retainer screw
2
) paper is loaded into the printer.
Chapter 5. Removals, service checks and adjustments
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