P RINTER O PTIONS F.1PrecautionsNever remove the printer control board while the printer isplugged in.To avoid the possibility of electrical shock, always disconnect thepower cord when installing or removing ANY internal or externalprinter option.The control board and internal printer options(SIMM, Network interface) are sensitive to static electricity.Before installing or removing an internal option,discharge static electricity from your body by touchingsomething metal, such as the metal back plate on any deviceplugged into a grounded power source.If you walk round before finishing the installation, discharge anystatic electricity again.Discharge Static ElectricityDisconnect The Power Cord