HP LH4r HP Netserver LXr 8000 Installation Guide - Page 117

12 Troubleshooting Precautions WARNING Before removing the top cover, always disconnect the power cord and unplug telephone cables. Disconnect telephone cables to avoid exposure to shock hazard from telephone ringing voltages. Disconnect the power cord to avoid exposure to high energy levels that may cause burns when parts are short-circuited by metal objects such as tools or jewelry. Note that the power switch does NOT turn off the standby power. Disconnect the power cord from the HP NetServer before handling components. CAUTION Replace the top cover before operating the HP NetServer, even for a short time. Otherwise, overheating can damage chips, boards, and mass storage devices. However, you can safely remove the PCI Hot Plug access panel while the system is running to remove and replace PCI Hot Plug boards. For any other service activity that requires access to the processor baseboard or I/O baseboard, power down the system and observe all precautions listed above. Troubleshooting Tools If you are having problems installing your HP NetServer, there are a number of different tools available for troubleshooting: • HP NetServer Information Assistant (see Chapter 11) contains the following tools: ◊ Troubleshooting Information ◊ Part Information 109