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9.2.16 A-Frame
Alignment
A-frame alignment to the platen is set at the fac-
tory and mounting screws are secured with Loc-
tite
l
.
Further alignment should not be required
in normal printer use. However, if alignment is re-
quired, use the following procedure.
1.
Turn power off at the operator control
panel.
2.
Remove the printer cover (9.2.1).
3.
Set the copy control dial to O.
4.
Measure the clearance between the platen
and the print head at both ends of the
platen. Clearance should be 0.012 inch to
0.014 inch (0.30 mm to 0.36 mm). If the
left end dimension is wrong, go to the next
step; if the right end dimension is wrong, go
to step 9.
5.
If the left end qimension is wrong, slightly
loosen the A-frame mounting screws in the
left side frame
II.
6.
With a brass drift punch and a hammer, tap
on the A-frame left side plate to obtain the
specified clearance.
7.
Securely tighten the A-frame mounting
screws (Loctite is unnecessary), check the
clearance, and readjust if necessary.
8.
Check the clearance at the right end of the
platen. If the clearance is not correct, con-
tinue on to the next step. If the clearance is
correct, install the printer cover (9.2.1), turn
power on, and set the copy control dial for
proper printing.
1
Trademark of Loctite Corp.
9.
10.
11. .
12.
13.
14.
If the right end dimension is wrong, slightly
loosen the A-frame mounting screws in the
right side frame
IJ.
With a brass drift punch and a hammer, tap
on the A-frame right side plate to obtain
the specified clearance.
Securely tighten the A-frame mounting
screws (Loctite is unnecessary), check the
clearance, and readjust if necessary.
Check the clearance at the left end of the
platen. If the clearance is not correct, re-
turn to step 5. If the clearance is correct,
install the printer cover (9.2.1), turn on
power, and set the copy control dial for
proper printing.
Check platen gear backlash (9.2.10) and
II
Right End
adjust, if necessary.
Check end-of-forms switch adjustment and
correct if necessary (9.2.17).
Serial Printer
9-25
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