HP Visualize J5000 hp Visualize J5000, J7000 workstations service handbook (a4 - Page 93

Field Replaceable Units (FRUs) FRU Removal and Replacement Prerequisite Steps for All Removal and Replacement Procedures You must complete the following steps before performing any of the FRU removal and replacement procedures in this chapter: 1. Power off the workstation (either by executing shutdown -h as root, or by simply pressing the power switch on the front panel of the workstation, which accomplishes the same thing), as well as the monitor and any attached peripheral devices. CAUTION Do not use the power supply interlock thumbscrew on the rear panel to power down the workstation. This power down method may hang the operating system in an unrecoverable state. 2. Unplug the workstation power cord and all peripheral devices from AC power outlets. 3. Attach the static-grounding wrist strap by following the instructions on the package. Attach the sticky end of the wrist strap to bare metal on the rear panel of the workstation. NOTE To make access to the internal FRUs easier, you may want to place the workstation on a table or workbench instead of leaving it on the floor. CAUTION The lifting ledge at the bottom, front of the workstation is strong enough to use as a handhold when lifting the workstation. However, note that this workstation is designated for two-person lifting; it weighs approximately 74 to 96 pounds (34 to 44 Kg), depending on the configuration. Do not attempt to lift it by yourself, or injury may result. Chapter 4 89