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4.2.45
Forms Tension Assembly
(50, 100, and 155 Ipm)
4.2.45.1 Print Units with Pivot Screws
and Two Paper Clamp Engaging
Levers
Note:
The levers and guideplates for the lower
paper clamp affect the forms tension. See 4.2.44.1
Adjustment,
step
5.
Service Check
1.
2.
Power down.
Remove the printer covers (4.2.1 steps 1
through
3)
forms, and rear forms guide.
Remove the two printer mounting screws
under the frame.
3.
Place the printer in the service position.
4.
5.
6.
7.
Remove the print unit assembly (4.2.10.1).
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 levers
II
until the assembly
locks.
Note:
Hold levers up by inserting folded
paper or other supporting material between
the levers and the printer base.
Check for 100 to 125 grams tensi on
m
while pulling the forms upward.
Note:
With the print unit installed, the
maximum tension is 250 grams.
8.
If the tension is not OK, do the adjustment.
Adjustment
1.
Operate the tension springs against the forms
by lifting the levers
II
until the assembly
locks. Check that all tension springs touch
the lower forms guide at the same time.
Form each spring
m
as needed.
2.
3.
4.
5.
Unhook clevis
II
and turn it on the link
to adjust the tension. Hook the clevis.
Repeat the service check, steps
5, 6
and
7.
I nstall the print unit assembly (4.2.10.1).
Place the printer in the operating position
and install the rear forms guide and covers.
Install the two printer mounting screws under
the frame.
Removal
1.
2.
3.
4.
5.
Power down.
Remove the printer covers (4.2.1 steps 1
through 3), forms, and rear forms guide.
Remove the two printer mounting screws
under the frame.
Place the printer in the service position.
Remove the print unit assembly (4.2.10.1).
Unhook the two return springs from the
clamp bar.
Note:
Nylon studs might fall out.
6.
7.
8.
9.
4-64
Remove four screws
II
and pivot up the
lower paper clamp.
Remove two screws
m,
and remove the
bracket from the printer base.
Disconnect the clevis
II .
Lift the forms tension assembly out of the
machine.
10.
Remove the tension springs
II
as required.
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