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9.2.4 Platen Release Eccentrics
Adjustment
This procedure adjusts both the left and right
eccentrics. However, when adjusting the left
eccentric, ensure that the platen release lever does
not touch the print head forms guide when the
carrier moves to the extreme left.
1.
Turn power off at the operator control
panel.
2.
3.
Remove the printer cover (9.2.1).
Loosen the screw
rill
that locks the eccen-
tric nut
D
until the screw is finger tight.
Note:
When adjusting the right side, remove
the platen knob and forms tractor drive
gear. When replacing, adjust clearance to
bushing
m.
4.
Press the platen bushing
rJ
down and turn
the eccentric nut so that when released, the
lever holds the bushing firmly against the
frame.
5.
Hold the eccentric nut in this position and
tighten the locking screw.
6.
Check the platen gear backlash adjustment
(9.2.10).
7.
Reinstall the printer cover (9.2.1).
9.2.5 Platen Gears
Removal
1.
Turn power off at the operator control
panel.
2.
Remove the forms tractor unit.
3.
Open the cover platen saddles and remove
the platen.
4.
Remove the knob from the gear end of the
platen (two setscrews
1iJ).
5.
Loosen the clamping hub
I]
on the forms
tractor drive gear.
6.
7.
8.
---------------m------------~
Left Side
---------m---~
Make sure that the
print head forms
guide does not
strike the release
lever here when
the head moves
to the extreme left.
Right Side
...----------m
Platen Gear
For installation, the bushing
CI
must rotate
freely with 0.002 inch to 0.005 inch (0.05
mm to 0.13 mm) clearance to the gear hub.
Remove the gear
Ii
and bushing
m.
Remove the screws that hold the platen
gear
m.
r-------I)
Clamping Hub
u=:
Forms Tractor
Drive Gear
. , . .r
Setscrews
~:],
(e~~,~
. .
,~,:
,,' I
<'I
~,
(j
~--
...... I:'
Bushing
~~
0.002 inch to 0.005 inch
(0.05 mm to 0.13 mm)
9.
Remove the gear.
10.
To reinstall the gears, reverse this procedure.
Serial Printer
9-17
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