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2.2.5
I mpression Control Switch
The impression control switch (Figure 2-6) is located
under the access cover, toward the right. I t provides three
different levels of print hammer energy to accommodate
different printwhee-\ fonts and variations in forms thick-
ness. Set the switch as follows:
H
High intensity; for multiple part forms only.
M
=
Medium intensity; for most normal printing.
L
=
Low intensity; for I ighter printing, to extend the
life of the more delicate type fonts (as opposed to
"Medium" or "Bold" types).
2.2.6
Cover-Open Switch
The cover-open switch is located under the printer access
cover. (See Figure 2-6: the switch may be mounted
differently than the one shown in the photograph, but
operation is the same.) The switch is automatically actuated
each time the access cover is opened or closed. If printing is
attempted while the cover is open, the ERROR indicator
COVER-OPEN
SWITCH
on the control panel lights up and the audible alarm sounds,
and no printing occurs. The printing will then occur when
the cover is closed again, providing the buffer did not
overrun (see Table 2-3).
Occasionally it may become necessary to operate the
printer with the access cover open or removed, e.g., when
replacing platens or ribbons. This is permissible when done
with care. This can be accomplished by pulling the switch
out to its "override" position. The switch will stay in the
override position until it is pushed back in, either by hand
or by replacing the cover.
WARNING
Whenever the access cover is removed
(e.g., when changing ribbons or print-
wheels), use care to not accidentally
touch the cover-open switch - this could
allow a sudden carriage movement which
might cause injury. Always keep hair,
jewelry, etc., out of the area of the
carriage and printwheel.
IMPRESSION
CONTROL SWITCH
Figure 2-6. Cover-Open and Impression Control Switches
2-8
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