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4.6.10 Print Unit Assembly (285 Ipm)
I
DANGER
The ribbon clutch solenoid becomes very hot
after use. Be sure it is cool before performing
maintenance.
Service Check
Make sure print unit is to the right to prevent
print cut off.
Removal
1.
2.
3.
4.
5.
Remove the printer covers, keyboard cover,
and divider (4.6.1).
Unplug connectors P1 and P4. Remove
the ground wire, if installed (near spring
ttl.
Unhook spring
EI
from the right end at
the screw. Remove two springs
m
from
under the print unit.
Open the print unit. Raise both ribbon
guides.
CAUTION
When removing the print unit, note that
P5 and P13 are still connected.
While supporting the print unit from both
ends, sl ide the assembly to the left until
the print unit clears the pivot pins
m '
and the guide(s)
II
clear the paper clamp
lever(s)
g.
6.
Unplug connectors P5 andP13.
Replacement
1.
Raise paper clamp lever(s)
II .
2.
Raise both ribbon guides.
3.
4.
5.
6.
Place the print unit on the base so that
the pivot holes are
ali~lned
to the left of
the pivot pins
m .
Be sure the motor
cable (P4) is placed behind the print unit
as shown
m .
Replug connectors P5 and P13. Install
the ground wire under the clamp.
While supporting the print unit, open the
print unit release lever
m .
Move the
assembly to the right until stopped by
the left pivot. Be sure the unit pivots on
both pins
iii
and the paper clamp lever(s)
II
are in the guide(s)
II .
Hook spring
Ii
on the screw.
7.
Replug connectors P1 and P4.
8.
9.
Install print unit support springs
m .
Perform print unit stop screw adjustment
(4.6.10.1 ).
10.
Install the print unit covers.
4-106
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