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4.2.44 50, 100, and 155 Ipm
Lower Paper Clamp (Continued)
4.2.44.2 Single Coil Clamp With One
Engaging Lever
fJ
Service Check
1.
Install single-part forms that are wide
enough to cover the print line. Close the
print unit.
2.
Load program 10 PRT1; this program allows
you to open or close the paper clamps each
time you press the ENTER key.
3.
Close the paper clamps.
4.
Grip the forms and try to pull them upward.
The forms must be held tightly on both ends.
If forms are not held tightly, do the
adjustment.
Adjustment
1.
Power down.
2.
3.
4.
5.
Remove the printer covers (4.2.1) and forms.
Remove the print unit (4.2.10.2).
Manually latch the paper clamp mechanism
by lifting leverEtup.
Note:
Hold the lever up with folded paper
between the lever and print base.
Check mechanical action by engaging the
armature. Be sure parts move easily and
the clamp bar returns to the bumpers
131
when the armature is released.
6.
Check between the two outer tension
fingers (both ends) for 0.068 to 0.084 inch
(1.73 to 2.13 mm) gap
iii .
The maximum
difference between both gaps
11
should not
exceed 0.010 inch (0.25 mm). If correct, go
to step 7.
7.
8.
9.
To adjust:
a. Remove the seal from screws
II,
if needed.
Loosen two screws in each stop plate.
b. Loosen four holding screws
m
in the
clamp assembly.
c. Move the clamp assembly to obtain gap
m '
then tighten the screws
m .
Check
the gap again.
d. Hold stop plates against the clamp assembly,
and then tighten screws
B .
Load program 10 PRT1; this program allows
you to open or close the paper clamps each
time you press the ENTER key.
Close the paper clamps. Be sure the
armature is seated on the end blocks
II
a. Check for 0.006 to 0.008 inch (0.15 to
0.20 mm) gap
II
(both ends). Adjust,
if needed, by turning screw(s) with a
small six-fluted wrench
m .
Note:
Turning clockwise increases the
gap.
b. Check for 0.004 to 0.006 inch (0.13 to
0.03 mm) gap
m
(both ends). Adjust,
if needed, by turning screw(s)
D .
Note:
Turning clockwise increases the
gap.
Check both gaps
m
again after adjusting.
Open the paper clamp, then do the lower
paper clamp service check (4.2.44.2).
10.
Do forms tension service check (4.2.45)
steps 4 through 7.
11.
Power down and remove the support
material under lever
rJ .
12.
Install the print unit (4.2.10.2).
13.
Install the printer covers.
4-60
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