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4.6.35 Ribbon Tracking (285 Ipm)
Note: A new ribbon must be installed before you
check or adjust ribbon tracking. Do not perform
this check or adjustment unless tracking problems
are obvious.
Service Check
1.
With the power off and the print unit closed,
manually turn the right type belt pulley
counterclockwise and check that the top of
the ribbon just touches the bottom of the
step at the left end of the ribbon shield
m .
2.
While turning the right type belt pulley,
check that the top of the ribbon is
0.050
to
0.060
inch
(1.30
to
1.50
mm) above the
right end of the platen
Ill1 .
Lower Ribbon Shield
_L
Top of ribbon
just touches
point
Ii
(left end of platen)
Adjustment
1.
Open the cover and the print unit.
2.
3.
4.
Remove the type belt
(4.6.13).
Lower the ribbon guides.
Turn the pulley counterclockwise and verify
that the ribbon tracks between the metal
and plastic guides in the lower ribbon shield.
Close the upper ribbon shield. Turn the
pulley again and ensure that the ribbon
tracks under the upper ribbon shield.
5.
6.
The ribbon should track so that the top of it
just touches the bottom of the step at the left
end of the ribbon shield
m ,
and the top of
the ribbon is
0.050
to
0.060
inch
(1.30
to
1.50
mm) above the right end of the platen
mJ.
If not correct, adjust the stopscrew
under each ribbon guide as needed.
Replace the type belt. Close the print unit
and the cover.
Upper Ribbon Shield
Lower Ribbon Shield
Top of ribbon
0.050
to
0.060
inch
(1.30
to
1.50
mm)
above right
end of platen
m
RIBBON GUIDE, LEFT
RIBBON GUIDE, RIGHT
Belt Printer
2851pm
4-131
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