HP Point of Sale rp5000 Troubleshooting Guide (2nd Edition) - Page 37

Troubleshooting Without Diagnostics Solving Display Problems (Continued) Problem Cause Vibrating or rattling noise coming from inside a CRT monitor when powered on. Monitor degaussing coil has been activated. Clicking noise coming from inside a CRT monitor. Electronic relays have been activated inside the monitor. High pitched noise coming from inside a flat panel monitor. Fuzzy focus; streaking, ghosting, or shadowing effects; horizontal scrolling lines; faint vertical bars; or unable to center the picture on the screen. (flat panel monitors using an analog VGA input connection only) Brightness and/or contrast settings are too high. Flat panel monitor's internal digital conversion circuits may be unable to correctly interpret the output synchronization of the graphics card. Certain typed symbols do not appear correct. The font you are using does not support that particular symbol. Solution None. It is normal for the degaussing coil to be activated when the monitor is powered on. None. It is normal for some monitors to make a clicking noise when turned on and off, when going in and out of standby mode, and when changing resolutions. Lower brightness and/or contrast settings. 1. Select the monitor's Auto-Adjustment option in the monitor's on-screen display menu. 2. Manually synchronize the Clock and Clock Phase on-screen display functions. To download a SoftPaq that will assist you with the synchronization, go to the following Web site, select the appropriate monitor, and download either SP20930 or SP22333: www.hp.com/support Use the Character Map to locate the and select the appropriate symbol. Click Start > All Programs > Accessories > System Tools > Character Map. You can copy the symbol from the Character Map into a document. Troubleshooting Guide www.hp.com 2-21