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5.6
LINE FEED SOLENOID ADJUSTMENT
(cont'd)
E.
Insert the thin end
(0.136 inch) of the
solenoid adjustment
gauge between the solenoid housing and the rubber O-ring.
F.
Move
the
solenoid housing towards
the rear of the
printer mechanism,
then move the housing forward until the pawl just engages the
ratchet (without rotating the paper drive roller)
G.
Hold the solenoid housing
in this
position, tighten the two
solenoid mounting bolts, and then remove the solenoid adjustment
gauge
5.7
PRINT DENSITY
(SPEED)
ADJUSTMENT
A.
Remove printer covers.
(Refer
to paragraph 4.4.1.)
B.
Set up printer for testing with Mini-Exerciser.
1.
Connect Mini-Exerciser using ribbon interface cable.
2.
Place right-hand
(outer)
switch on Mini-Exerciser
in
down
position
(print spaces)
3.
Place POWER ON/OFF switch
in
OFF position.
4.
Place ONLINE/OFFLINE switch
in
OFFLINE position.
5.
Connect power cord to
a
3-wire grounded
120 Vac, 60 Hz
outlet.
C.
Place POWER ON/OFF switch
in
ON position and observe that power
on
LED illuminates.
D.
Place ONLINE/OFFLINE switch
in
ONLINE position.
The print head
will move
to the
left margin, then move from the left margin to
the
right margin and back.
Each time
the
print head reaches
the
right margin and reverses direction
a
line feed
is
executed.
This action will continue until the printer
is
turned off
or the
ONLINE/OFFLINE switch
is
placed
in
the
OFFLINE position.
E.
Determine the number of times
the
print head moves from left to
right
in
one minute (lines per minute) by observing print head
movement and using
a
watch or clock.
The proper rate
is
from
29
to 32 lines per minute.
F.
Adjust resistor R25 until the proper rate
(29
to 32 lines per
minute)
is
achieved.
5-4
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