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d.
On
the right side plate, remove
only the inside retaining ring
from the lower carriage shaft.
e.
Carefully slide
the
carriage shaft out of
the
right end plate.
With
the
carriage shaft removed, the molded rack may now be
removed.
CAUTION
The rack is not symmetrical, and must
be
installed so that the teeth are pro-
vided at
the left end for the
RTP
function.
The end with more teeth
is
also identified by
a
molded stud on
the
end.
f.
Insert the replacement
rack,
observing the CAUTION above.
Insert
the
carriage shaft and orient the retaining ring on the right end
so that
it
does not interfere with
the end of the rack.
Insert
all retaining rings
in
this manner.
g.
Insert the rack tension leaf spring so that
it
tightens the
rack.
h.
Install the mechanism assembly and cover assemblies, referring to
steps
b.
and
a.
as
required.
6.6
BASE COVER ASSEMBLY
(See
Figure
6-5)
To replace
the
base cover, remove
the
assemblies as follows:
a.
See the power removal WARNING (paragraph 6.1).
Remove the cover
assemblies per paragraph 4.4.1.
b.
Remove the mechanism assembly per paragraph
6.2.
c.
Remove the logic pcb per paragraph
6.3.
d.
Remove the base cover cap from the old base and insert
it
into
the front
panel hole at the same location on the replacement
base cover assembly.
e.
Reinstall all assemblies on
the
replacement base cover.
Refer
to
steps
c,
b.
and
a.
as required.
6.7
BODY COVER ASSEMBLY
(See
Figure
6-5)
To replace the body cover assembly, proceed as follows:
a.
See the power removal WARNING (paragraph 6.1).
Remove the cover
assemblies per paragraph 4.4.1.
b.
Install the replacement body cover assembly consisting of the
body cover, soundproofing, ribbon drive motor assembly, capstan
and ribbon tensioner.
c.
Install
a
new ribbon.
6-7
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