HP LaserJet 3200 Service Manual - Page 89

Removal and replacement strategy WARNING! This chapter documents removal and replacement of field replaceable units (FRUs) only. Replacement is generally the reverse of removal. Occasionally, notes are included to provide directions for difficult or critical replacement procedures. Unplug the power cord from the power outlet before attempting to service the product. If this warning is not followed, severe injury can result. Certain functional checks during troubleshooting must be performed with power supplied to the product. However, the power supply should be disconnected during removal. Never operate or service the product with the protective cover removed from the laser/scanner assembly. The reflected beam, although invisible, can damage your eyes. Sheet metal edges can be sharp. Use caution when working on the product. CAUTION The product contains parts that are electrostatic discharge (ESD) sensitive. Always perform service work at an ESD-protected workstation. Note To install a self-tapping screw, first turn it counterclockwise to align it with the existing thread pattern, then carefully turn clockwise to tighten. Do not overtighten. If a self-tapping screw-hole becomes stripped, repair the screw-hole or replace the affected assembly. Always remove the toner cartridge before removing or replacing parts. CAUTION Required tools l #2 Phillips screwdriver with magnetic tip l Small flatblade screwdriver l Needle nose pliers l ESD mat A Posidriv screwdriver will damage screw heads. Use Phillips screwdriver only. EN Removal and replacement strategy 87