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Rev. E
RIBBON FEED - AL
(2) Loosen four screws (AL-6) holding rack guide
place (AL-2) to printer.
(3) Raise rack guide plate (AL-2) upwards away from
pinion (AF-22).
b.
Rack and Pinion Adjustment
(1)
Move ribbon feed bar (AL-101) by hand so that
rack (AL-1) can be adjusted in next step (2).
(2) Maintain 7 mm (0.27-inch) between ribbon feed
rack (AL-1) and guide rack (AL-2).
(See Fig. 5-13)
--1
r-
7 MM
AL-1
AL-2
AL-101
Figure 5-13.
LOCATING DIMENSION FOR RIBBON FEED RACK
(3) When performing next step (4), adjust guide plate
so that rack is in a horizontal plane and meshes
evenly with pinion gear when head is run out to
extreme right by hand.
(4) Maintain allowable standard backlash of 0.1 mm
(0.004-in.) between rack and pinion teeth.
(Move
rack guide plate up or down into spline of shaft
(AF-22) to establish backlash adjustment, (See Fig.
5-14) .
(5) When those steps in paras. 2.b.1. through 2.b.3
have been performed correctly, tighten four rack
guide screws (AL-6).
3. Torgue Limiting Device (Brake) (AF-23)
a.
Perform steps found at para. 5.2.6.3.A.2 through A.4.
b.
Replace ribbon holder plate (AL-8).
5-38
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