Dell Dimension H7228 Owner's Manual

Also see for Dimension 4600C: Quick setup guide Service manual

Contents

Solving Problems 41If the screen is difficult to readSWAP THE POWER CABLES — Swap the computer and monitor power cables to determine if the powercable is defective.TEST THE VIDEO EXTENSION CABLE (IF USED) — If you are using a video extension cable and removing thecable solves the problem, the cable is defective.TEST ANOTHER MONITOR — If another monitor is available, connect it to the computer.CHECK THE DIAGNOSTIC LIGHTS — See page 43.CHECK THE MONITOR SETTINGS — See the monitor documentation for instructions on adjustingthe contrast and brightness, demagnetizing (degaussing) the monitor, and running themonitor self-test.MOVE THE SUBWOOFER AWAY FROM THE MONITOR — If your speaker system includes a subwoofer, ensurethat the subwoofer is at least 60 cm (2 ft) away from the monitor.MOVE THE MONITOR AWAY FROM EXTERNAL POWER SOURCES — Fans, fluorescent lights, halogen lamps,and other electrical devices can cause the screen image to appear "shaky." Turn off nearby devices tocheck for interference.ROTATE THE MONITOR TO FACE A DIFFERENT DIRECTION — Eliminate sunlight glare, which can cause poorpicture quality.ADJUST THE WINDOWS® DISPLAY SETTINGS —1 Click the Start button and click Control Panel.2 Click Appearance and Themes.3 Click Display and click the Settings tab.4 Try different settings for Screen resolution and Color quality.RESTORE THE RECOMMENDED SETTINGS — Restore the original resolution and refresh rate settings.See the Tell Me How help file for instructions. To access help files, see page 25.