Specifications

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5 Replace the controller board.
Use the instructions in chapter 2, “Memory and System
Software,” the “Reinstalling the Controller Board” section, of this
manual.
6 Secure the serial interface to the printer with the two screws
you removed earlier.
7 Reconnect all interface cables and the power cord, and then
turn on the printer.
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Connecting your printer to a PC via the optional serial port involves
assembling the proper interface cabling, making the connection, and
installing the necessary PC printing software.
If you have a new PC and it has not been connected yet, before con-
necting the printer to the PC, you should follow the manufacturer’s
instructions for setting up the PC and installing (if necessary) any
operating system software, such as DOS and/or Windows.
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Interface cables are not included with your printer. If you’re replacing
a printer, you may already have the necessary cables. If not, you’ll
need to purchase the cables from your QMS vendor or a local com-
puter store.
To connect your printer to a single PC, you need a serial cable with
either a 9- or 25-pin connector (depending on your PC’s serial port)
and a 9- or 25-pin null modem assembly to connect to the serial
cable. Depending on the type of null modem assembly you have, you
may also need a 9-to-25-pin adapter. See your cable vendor for more
specific cable assembly information.
»Note: See the “Cable Pinouts” section of appendix B in the Reference 
manual  for cable pinout specifications.