HP Dx5150 HP Business Desktop dx5150 Series Service Reference Guide, 1st Editi - Page 159
Start > All Programs >, Accessories > System Tools >, Character Map, Problem, Cause,
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Troubleshooting Without Diagnostics Solving Display Problems (Continued) Problem Cause Blurry video or requested resolution cannot be set (continued) Monitor is not capable of displaying requested resolution. The picture is broken up, rolls, jitters, or flashes. The monitor connections may be incomplete or the monitor may be incorrectly adjusted. Vibrating or rattling noise coming from inside a CRT monitor when powered on. Clicking noise coming from inside a CRT monitor. Monitor needs to be degaussed. Monitor degaussing coil has been activated. 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 Change requested resolution. 1. Be sure the monitor cable is securely connected to the computer. 2. In a two-monitor system or if another monitor is in close proximity, be sure the monitors are not interfering with each other's electromagnetic field by moving them apart. 3. Fluorescent lights or fans may be too close to the monitor. Degauss the monitor. 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. Download SoftPaq SP20930 or SP22333, depending on the monitor, to assist with the synchronization. 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. Service Reference Guide, dx5150 361685-001 D-13