HP LH4r HP Netserver LH 3 Power Supply Upgrade Manual - Page 8

Chapter 1 NOTE Introduction All components of the accessory kit must be installed in order for the power supply module to function properly. Removing the Covers CAUTION Never operate this NetServer without first installing all covers. Operating the system without all covers in place reduces critical cooling airflow over some components, such as hard disk drives and processor modules. Operating the system without all covers in place may result in failure of these components. WARNING Before removing the covers, always disconnect the power cord and unplug telephone cables. 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. Disconnect telephone cables to avoid exposure to shock hazard from telephone ringing devices. Note that the power switch does not turn off the standby power. Disconnect the power cord to turn off standby power. If the backlight on the LCD display is on, standby power is on. CAUTION Wear a wrist strap and use a static-dissipating work surface connected to the chassis at all times. 4