A-1Appendix A Option UnitsThis appendix explains how to install each option unit. Also refer to the manuals of the respective option units.Also this appendix explains how to remove the main circuit board and then how to install a DIMM (Dual In-line Memory Module) on themain circuit board. Expanded printer memory enables you to print more complex pages, download more fonts, and define more macros.The printer has the following options available. For instructions on installing individual options, refer to the documentationincluded with the option.Figure A-11. Available OptionsDocument FinisherDF-71Document Fin-isher DF-75Paper Feeder PF-70Paper Feeder PF-75Memory Card (CF)Network InterfaceCard (IB-20/21E/22)Hard Disk UnitExpansion Memory(DIMM 32/64/128/256 MB)Punch UnitPH-2A/2B/2CReverse Unit RA-1**: For facedown high-speed printing.Document FinisherDF-73Serial Interface BoardKlt (IB-11)Mail Box M-2107(For DF-71)
