XEROX COAX/TWINAX OPTIONBefore you beginIf you do not wish to install the Coax/Twinax board yourself, callyour service representative, and for a nominal charge, arepresentative will be sent to perform the installation for you.If you choose to install this option yourself, refer to the followinginstructions.Perform the following steps before beginning the Coax/Twinaxboard installation procedures. Refer to figure A3-3.1. Power off the printer.2. Remove any font cartridge from the printer.Figure A3-3. Front and back views of the 4213 laser printer1. Cartridge slots2. Thumbscrews3. Power switchXEROX 4213 LASER PRINTER USER GUIDE A3-7