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4.6.45
285 Ipm Forms Tension
Assembly (Continued)
4.6.45.2 Print Units with One Paper
Clamp Engaging Lever
II
Note:
The lever and guide plate for the lower
paper clamp affect the forms tension. See 4.6.44,
Adjustment,
step 4.
Service Check
1.
Power down.
2.
Remove the printer covers (4.6.1) and
forms.
3.
4.
5.
6.
7.
Remove the print unit assembly (4.6.10).
Load about 35 inches (900 mm) of single-
part forms that are wide enough to contact
all six tension springs.
Operate the tension springs against the forms
by lifting the lever
II
until the assembly
locks.
Note:
Hold lever up by inserting folded
paper or other supporting material between
the lever and the printer base.
Check for 100 to 125 grams tension
m
while pulling the forms upward.
Note:
With the print unit installed, the
maximum tension is 250 grams.
If the tension is not OK, do the adjustment.
Adjustment
1.
2.
3.
Operate the tension springs against the forms
by lifting the lever
(I
until the assembly
locks. Check that all tension springs touch
the lower forms guide at the same time.
Form each spring
II
as needed.
Unhook the clevisll! and turn it on the
link to adjust the tension. Hook the clevis.
Repeat the service check, steps 5, 6, and 7.
4.
Install the print unit assembly (4.6.10).
5.
Install the rear forms guide and covers.
Removal
1 .
Power down.
2.
Remove the printer covers (4.6.1) and forms.
3.
Remove the print unit (4.6.10).
4.
5.
6.
Remove the-lower paper clamp assembly
(4.6.44.3).
Loosen screw
0 ,
then remove retainer
plate
m.
Rotate the forms tension shaft
D
forward
and slide the shaft to the left until the right
end is clear of the right pivot. Remove the
bushing
m
from the left end.
7.
Lift the right end of the shaft up and to
the right until clear of the left pivot.
4-148
Replacement
1.
2.
3.
4.
Install the shaft by inserting the left end,
then the right end. Push the shaft to the
right. You should feel the tension from
the spring
13.
Replace the bushingmon the shaft. Install
plate
m
on the left pivot pin. Hold the
plate down and tighten screw
0 .
Replace the lower paper clamp assembly
(4.6.44.3).
Do the lower paper clamp service check
and adjust if needed (4.6.44.2).
5.
Do forms tension service check (4.6.45)
and adjust, if needed.
6.
Remove the support material from under
the engaging lever. Install the print unit
(4.6.10) and the covers (4.6.1).
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