User manual PHILIPS 105E69

[. . . ] Safety and Troubleshooting Information Safety Precautions and Maintenance · Troubleshooting · Regulatory Information · Other Related Information Safety precautions and maintenance WARNING: Use of controls, adjustments, or procedures other than those specified in this documentation may result in exposure to shock, electrical hazards, and/or mechanical hazards. Read and follow these instructions when connecting and using your computer monitor: %Ï %Ï %Ï %Ï %Ï %Ï Disconnect the monitor from the power supply if the monitor is not to be used for an extended period of time. Do not attempt to remove the back cover, as you will be exposed to a shock hazard. The back cover should only be removed by qualified service personnel. Do not place objects on top of the monitor cabinet, objects could fall into vents or cover them and prevent proper cooling of the monitor's electronic devices. [. . . ] DDC is implemented as part of the new Plug & Play approach introduced into the PC market to increase user friendliness. The three levels developed for Plug & play are: (1) DDC1, monitor send data to the PC; (2) DDC2B, PC can request information from monitor; and (3) DDC2Bi which is a two-way communication monitor can be addressed and PC or graphics board can give commands to monitor. DDC 1/2B See DDC. DDC 2Bi See DDC. Degaussing The procedure of demagnetizing the shadow mask and associated metal parts of a picture tube at switch-on to minimize picture distortion. This is usually accomplished by means of a special degaussing coil through which a decaying alternating current is passed to generate an alternating magnetic field that gradually decays to demagnetize the tube. Some monitors offer a manual degaussing facility that can be activated at any time. Digital control Microprocessor-based digital control of picture parameters and video modes for complete control of picture settings and modes and instant recall of all settings at the push of a button. This is a very advanced feature that allows the user to switch to any required mode at any instant without having to spend time readjusting the picture. It is currently available in most Philips monitors. Dot pitch The shortest distance between two phosphor dots of the same color on the screen. The smaller the dot pitch, the better the resolution of the monitor. Dot rateFFrequency in MHz of the dot clock. It is a measure of the speed with which data is transferred between the video card and subsequent processing circuitry. RETURN TO TOP OF THE PAGE E Electromagnetic radiation standards International standards set to limit electromagnetic emissions from monitors. There are currently two important standards both derived from regulations originally laid down by Swedish authorities. MPR-II The standard originally proposed by the Swedish National Board of Measurement and Testing. It set maximum levels of electromagnetic radiation emitted by monitors, and has now been adopted as a world standard. MPR-II defines maximum permitted electrostatic, magnetic and electric field levels measured at a distance of 50 cm from the center of the monitor (see table). TCO In 1991, the Swedish Tjänstemannens Central Organization (TCO, Swedish confederation of Professional Employees ) set a standard even more severe than MPR-II, especially for alternating electric fields (AEF). The TCO standard is more severe since not only are the permitted field levels reduced compared with MPR-II, but the measuring distance is also reduced (see table). Electromagnetic radiation standards EMI (Electrical Magnetic Interference) The electrical and/or magnetic radiation coming from the working electrical or electronic equipment. EMS (Electrical Magnetic Sustainment) The ability of electrical or electronic equipment to function properly in the environment with electrical and/or magnetic interference. RETURN TO TOP OF THE PAGE F Flicker Very rapid variations in picture intensity caused by the finite time required for the electron beam to scan a picture onto the screen. Two kinds of flicker occur: line flicker caused by the electron beam scanning-in each line of the picture; and frame flicker (or field flicker if the picture is interlaced) caused by the frame repetition rate of 50 frames/second. Frame flicker is noticeable with GUI and DTP software (which have a light background), and can be very disturbing, especially for those who work regularly with displays - contributing to eye strain, headaches, visual blurring, stress, etc. The problem can, however, be eliminated by increasing the refresh rate (number of frames/second) of the monitor to a value above around 70 Hz. Sensitivity to flicker appears to diminish with increasing age. RETURN TO TOP OF THE PAGE H Hertz The unit of frequency named after the physicist Heinrich Hertz (1857-1894). [. . . ] · Change the color temperature settings to 9300 color coordination via the OSD menu. · Set the Contrast to maximum level (100) and Brightness to middle level (50). Video card could be defective (try the monitor with another computer) 33. How can I increase the color display of my monitor? [. . . ]