HP Color LaserJet 9500 Service Manual - Page 91

Introduction WARNING! Note CAUTION Removal and replacement strategy This chapter documents the removal and replacement of field replaceable units (FRUs) only for the output devices. Replace parts in the reverse order of their removal. Directions for difficult or critical replacement procedures are included. The sheet-metal edges of the output device can be sharp. Use caution when working on the output device. Note the length, diameter, color, type, and location of each screw. Be sure to return each screw to its original location during reassembly. Incorrectly routed or loose wire harnesses can interfere with other internal components and can become damaged or broken. Frayed or pinched harness wires can be difficult to locate. When replacing wire harnesses, always use the provided wire loops, lance points, or wire-harness guides. Electrostatic discharge The output devices contain parts that are sensitive to electrostatic discharge (ESD). Always service the output device at an ESD-protected workstation, or use an ESD mat. Watch for the ESD symbol (shown at left) to identify the parts that are sensitive to ESD. Protect these parts by using an ESD wrist strap and protective ESD pouches. CAUTION A pozidriv screwdriver will damage screw heads on the output device. Use a #2 Phillips screwdriver. If you use a multispeed screwdriver, use a torque limiter. Required tools The following tools are needed to service these output devices: ● #2 Phillips screwdriver with a magnetic tip ● Small flatblade screwdriver ● Torx #20 screwdriver ● Torx #15 screwdriver ● Torx #10 screwdriver ● Small needle-nose pliers ● ESD mat ● Penlight ENWW Chapter 6 Removal and replacement 89