Installing The Serial Lnterface + Usb Lnterface Card - Olivetti PR2 E Service Manual

Proceed as follows to install this optional card:
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Power off the printer
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Using a screwdriver, break off the slot cover of the optional serial interface on the rear of the printer.
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Insert the interface card in the slot and slide it along the guideways until it plugs into the related
connector on the main board. Push firmly to ensure proper connection.
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Tighten the card's two side screws to secure it in place.
Fig. 3-8 Installing the Serial lnterface + USB lnterface Card
Once the optional serial interface + USB interface card is installed, only the two serial interfaces are
operational simultaneously. In this configuration, with an empty buffer and in an out of paper condition,
the printer polls the two ports to see which one will be assigned. When a signal is received by any one
of the two interfaces, the printer switches to the receiving interface and maintains this condition until the
end of the print job. The assignement of the interfaces is mutually exclusive.
In addition to the active emulation, the two interfaces have the same parameter settings. The active
emulation can be changed by an on-line command.