Installing The Interface Board - Epson LQ-2550 User Manual

All Epson interfaces have the EPSON name printed on them. If the
board has an identification code printed on it, it is a four-digit number
beginning with 8, and should correspond to one of the numbers listed in
the table above.

Installing the interface board

The optional interface boards available for your printer are easy to
install. The only tool needed is a cross-head screwdriver.
Before installing an optional interface board, be sure that:
Continuous feed paper is removed.
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The printer and computer are turned off.
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The parallel cable is disconnected from the printer and the computer.
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The paper guide and the paper guide cover are removed.
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The printer cover is removed.
l
Any installed printer option (such as the cut sheet feeder or pull
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tractor) is removed.
The cable cover is removed.
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Any DIP switches or jumpers on the interface board are set
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according to the instructions in your interface board manual.
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Using Printer Options