Multimedia audio-visual equipment, common problems and solutions – Multimedia –
Multimedia teaching equipment generally Computer , Projector , Electric screen, DVD player, Amplifiers , Booth, and other physical media device combination. Their work is multi-media teaching an important guarantee for the normal, for their management and maintenance, can not handle such a problem before, needs to be done with or without fault have regular check-ups regularly. Mainly from the use of frequencies below the highest and most difficult problems of equipment: the computer system and Projection System from two perspectives.
Computer systems and solutions of frequently asked questions
Multimedia computer is both a high-precision equipment, but also the core of multi-media teaching system. It's "health" will determine whether the smooth conduct of multi-media teaching. From Power supply System perspective, the power supply should be as far as possible to the computer UPS (uninterruptible power supply) power supply to ensure that the computer will not run during a sudden power failure or data loss caused Ershi hardware damage, but also guaranteed not to destroyed due to the sudden power and computer hardware. Management should also periodically check the computer power outlets, a variety of I / O interface lines to avoid because of poor contact and the impact of multimedia effects or cause a fire.
Projection system common problems and solutions
Multimedia projector is an essential equipment, high frequency, but also failure-prone equipment. It's "health" also determines whether the multi-media teaching can proceed smoothly.
From the projector to see the power supply system should maximize the use of UPS (uninterruptible power supply) power supply, projector bulb temperature work up to thousands of degrees Celsius, the filament in a semi-molten state, its internal circuit boards other components are working at high temperatures. If a sudden power failure, the machine's heat to obtain timely dissemination, which will greatly shorten the life of the projector, or even lead to bulb burst, filament fracture, the consequences of the circuit board burned. Also note the projector immediately after use can not disconnect the power, the projector should be completed and automatically shut down after cooling power.
In addition, from the projector to see the hardware system, frequent switching projectors, continuous use of time is too long, vibration, humidity, dust, etc., may shorten the life of the projector. Projectors are generally designed specifically for cooling fans, dozens of liters per minute of air flow on the internal air supply, high-speed network flow by Dust in the inner loop will heat the machine away, play a cooling effect. The net flow through the Dust tiny dust particles that may entrainment, while the internal LCD panels in the imaging easily adsorbed by electrostatic and dust. This requires the need for regular contact professionals Projector Dust network, circuit board dust, repair.
In addition, the administrator should periodically check the projector surrounding environment to see if there occluder to block the projector vents, ensuring good thermal environment. In addition, when the holidays, summer vacation does not use the projector with long-term situation, application of dust cover to cover a good projector and put desiccant, to prevent the internal parts of the projector because the air is humid and damp, mildew. For the projector on the back of a series of interfaces, should also regularly check the joints for the cable is broken due to aging, to prevent poor contact and the impact of the phenomenon of projection effects or occurrence of ignition.
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