HP Workstation x4000 hp workstation x4000 - Technical Reference manual - Windo - Page 21

CAUTION System Overview HP x4000 Control Panel HP x4000 Control Panel The Workstation's control panel shown in Figure 1-4 has the following features: • Power On/Off button: Press to start the Workstation. You can wake the Workstation from Hibernate or Stand By mode by pressing this button for less than four seconds. For more information about these modes, see "Using Power Management" on page 89. Always power off through the operating system. Do not power off using the power button or reset button except during extreme circumstances when the system will not shut down through the operating system. Using the power button or reset button to power down may cause you to lose unsaved data from open applications. In the event that the operating system has hung and will not shut down, pressing the power button for five seconds is equivalent to pulling the power plug. • Power LED: - Solid green indicates system on. - Solid yellow indicates the Workstation is in Stand By or Hibernate mode. See "Power Saving and Ergonometry" on page 89. - Flashing yellow, flashing red, or solid red indicates a system error. See "Understanding the Diag LEDs" on page 212. • Reset button: Press to reinitialize all the hardware without cycling power to the system. Avoid general use of this button because file damage may occur. • Hard Disk Activity LED: Flickers when your hard disk is being accessed. • Network Activity LED: Flickers when network activity is taking place This occurs even when the Workstation is in a power-off state, provided Wake-on-LAN is not enabled and both the network and power cables are plugged in. Chapter 1 21