Removal and replacement strategy This chapter documents the removal and replacement of field replaceable units (FRUs) only. Replacement is generally the reverse of removal. Occasionally, notes and hints are included to provide directions for difficult or critical replacement procedures. WARNING! Unplug the power cord from the power source before servicing the printer. Failure to follow this warning can result in personal injury or damage to the printer. Certain functional checks during troubleshooting require power supplied to the printer. However, power should be disconnected when removing assemblies. Never operate the printer with the laser/scanner assembly exposed.
The reflected beam, although invisible, can damage your eyes. When servicing the printer, replace the top cover before operating the printer. CAUTION The printer contains electrostatic discharge (ESD) sensitive components. Always perform service work at an ESD-protected workstation. If an ESD-protected workstation is not available, discharge body static and ground the printer chassis before servicing the printer. Required tools #2 Phillips screwdriver with magnetic tip Small flat-blade screwdriver Needle-nose pliers penlight (optional) Note Use of a Posidrive screwdriver damages screw-heads on the printer. Use a #2 Phillips screwdriver.
Hint To install a self-tapping screw, first turn it counterclockwise to align it with the existing thread pattern, then carefully turn it clockwise to tighten. Do not overtighten. Before performing service Unplug the power cable and remove all media from the printer. Place the printer on an ESD mat or discharge body static and ground the printer chassis. Remove the toner cartridge and media tray. See “Toner cartridge” on page 15 and “Media tray” on page 16. Q1342-90910 Removal and replacement strategy 13