Swecoin TTP 5000, Service Manual

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TTP 5000 Series Kiosk Printer Sub-system — Service Manual Edition B, May 97 10
2.4 Cutting
The cutter module moves the cutting knife first down (cutting) and then up again by
means of a DC-motor and a crank mechanism. A sensor detects when the knife reaches
its upper (home) position.
A vertical leaf spring (not shown in the above figure) aids in keeping the free end of the
movable knife blade pressed against the fixed cutting edge.
WARNING!
DANGER OF INJURY! Depending on the position of the crank mechanism, the cutting
knife may start moving when the printer is switched ON. KEEP HANDS AWAY WHEN
SWITCHING ON THE PRINTER.
2.5 Printhead-up detection
Lowering the paper release lever separates the printhead from the platen and actuates
the printhead-up micro-switch sensor. This sets a status bit in the status message.
Printing is interrupted as long as the printhead is lifted.
Lowering the paper release lever is also part of the procedure for setting the printer in a
HEX dump mode for logging the data transfer between the host and the printer. See
page 15.
CAUTION! — if the printer is not going to be used for a week or more, disengage the
printhead from the platen by lowering the paper release lever. Both the printhead and the
platen can otherwise be deformed.