Lenovo 2578HB6 User Manual - Page 21

Selecting a supported display mode The display mode the monitor uses is controlled by the computer. Therefore, refer to your computer documentation for details on how to change display modes. The image size, position and shape might change when the display mode changes. This is normal and the image can be readjusted using automatic image setup and the image controls. Unlike CRT monitors, which require a high refresh rate to minimize flicker, LCD or Flat Panel technology is inherently flicker-free. Note: If your system has previously been used with a CRT monitor and is currently configured to a display mode outside the range of this monitor, you may need to re-attach the CRT monitor temporarily until you have re-configured the system; preferably to 1680x1050 at 60Hz, which is the Native Resolution Display mode. The display modes shown below have been optimized at the factory. Table 2-3.Factory set display modes Addressability Refersh rate PAL 50Hz 640x350 70Hz 640x480 60Hz,66Hz,72Hz,75Hz 640x500 58Hz 720x400 70Hz 800x600 60Hz,72Hz,75Hz 1024x768 60Hz,70Hz,75Hz 1152x864 75Hz 1280x1024 60Hz,72Hz,75Hz 1360x768 60Hz 1440x900 60Hz,75Hz 1600x1000 60Hz 1680x1050 60Hz,75Hz Understanding power management Power management is invoked when the computer recognizes that you have not you're your mouse or keyboard for a user-definable period. There are several states as described in the table below. For optimal performance, switch off your monitor at the end of each working day, or whenever you expect to leave it unused for long periods during the day. Table2-4.Power indicator State Power Indicator Screen Restoring Operation Compliance On Steady green Normal Standby/ Supsend Steady amber Blank Press a key or move the mouse. There may be a slight delay reappears. Note: Standby also occurs if there is no image output to the monitor. ENERGY STAR Off Off Off Press power key to switch ENERGY STAR on. There may be a slight delay before the image reappears. 2-7 L2251x Wide Flat Panel Monitor User's Guide