Service Manual 8-3General Notes on DisassemblyCautionFollow the steps of all disassembly procedures in the order given to avoiddamaging printer components.1. Before servicing the printer, switch OFF the printer power, wait until the printercompletely shuts down, and disconnect the power cord from the wall outlet.2. Wear an electrostatic discharge wrist strap to help prevent damage to the sensitiveelectronics of the printer circuit boards.3. Upon reassembly of printer components, be sure the components are all in theirhome positions, otherwise damage to the printer will occur. See Chapter 6Adjustments, Home Position page 6-2 for information on the home positions.Special Notes Regarding Screws Used in This Equipment.■ Screws in plastic are torqued to 12 in lbs., metal to 15 in lbs., unless otherwisespecified.■ Do not over torque the screws threaded into plastic parts.■ Always use the correct type and size screw; coarse thread, brass-colored screwsinto plastic and fine thread, silver-colored screws into metal.■ Using the wrong screw can damage tapped holes.■ Do not use excessive force to remove or install either a screw or a printer part.■ If using a power driver to install a screw into plastic, start the screw by hand.■ If you strip out threads in the plastic chassis, a silver-blue-tinted thread repairscrew (included in the hardware kit) can be used to correct the problem.■ If you remove a silver-blue-tinted thread repair screw during disassembly, replacethe screw the same location or additional damage to the printer will occur.WarningUnplug the AC power cord from the wall outlet before removing any printer part.Notations in the Disassembly Text■ The notation “(item X)” points to a numbered callout in the illustrationcorresponding to a part or step being performed.■ The notation “PLX.X.X” indicates that this component is listed in the ServiceParts List.■ Bold arrows in an illustration show direction of movement when removing orreplacing a component.
