8 Maintenance RJ-901C/RJ-900C Maintenance Manual8-28.1 IntroductionThis chapter provides information about the periodical services, part life, lubrication/bonding, and transport.WARNINGBefore starting any maintenance work, always perform the following operations.• Turn the plotter power OFF.• Remove the power cable from the power outlet.Not doing so may cause electric shock or damage to the electric circuit.• Unplug the cables connected to the plotter.Failure to do so could result in damage to the plotter.CAUTION• Make sure there is sufficient space around the plotter when performing maintenancework.• When servicing the machinery inside with some covers removed, pay special attentionnot to be injured by the driving mechanisms.• Maintenance must be done by more than two person for the following work.• When disassembling or reassembling the plotter and the optional stand• When packing the plotter for transportation