Daily Maintenance of the Projector

Daily maintenance of the projector
1. Pay attention to the sequence of power switches
Properly switching the projector power on and off has a great influence on the service life of the projection lamp and the accessories inside the projector. If the power of the projector is turned off randomly, the power of the projection lamp and the circuit part of the projector will be turned off together, so that the cooling fan inside the projector will stop working due to the power failure, and the internal circuit board will be damaged, so that the projector cannot work normally. When the projector is switched from the on state to the off state, the cooling time should be at least 5 minutes apart.
2. Because the power supply of the projector adopts the method of switching power supply to step down, stabilize and stabilize the mains power, when switching on and off frequently, the high-power switching tube and transformer used in the projector power supply Both work at a higher frequency, and the switching tube will generate considerable power consumption during the frequent switching process. The power loss will be transferred into heat and dissipated, thereby increasing the temperature inside the projector.
3. The power supply voltage used should be stable
The stability of the power supply means that the projector and its signal source should be connected to the same good quality power outlet. The projector and its signal source use the same high-quality power socket, which can avoid the spark phenomenon between sockets caused by plugging and unplugging the power supply, damage the power supply circuit inside the projector, and prevent possible power mismatch. problem, make sure the projector is working properly.
4. Cannot work continuously for more than four hours
If the projection bulb works continuously for more than four hours, the accumulation of heat emitted by the imaging system inside the projector will cause the temperature inside the projector to rise rapidly, because the quartz on the inner wall of the projection bulb will devitrify under high temperature conditions. This phenomenon causes white spots to appear on the shell of the projection bulb, and the devitrification will block a large amount of light from emitting, causing the temperature of the local area of the projection bulb shell to rise abnormally, further expanding the devitrification area, and attenuating the brightness of the projection bulb. It is easy to cause the bulb to break.
6. Abnormal shutdown and sudden power failure are strictly prohibited
Most projectors use a cold light source system. The electricity and light conversion efficiency of the projection bulb is high, and the heat generated is greatly reduced compared with the original metal halide bulb. However, the projector is generally small in size, and it is easy to form accumulated temperature locally. , need to rely on the exhaust channel to dissipate heat, which requires the cooling fan to continue to be powered on for a period of time after the shutdown, so that the accumulated temperature inside the projector can be dissipated in time. Because of this, when switching the projector on and off, it must be Strictly follow the normal on and off sequence. Abnormal shutdown is a wrong operation that seriously violates the process of turning on and off. This kind of wrong operation can reduce the life of the projection lamp by more than 200 hours or even longer each time, and the cost is huge and must be avoided.
6. Regular dust removal
In the process of using the projector, it is often necessary to install a ceiling box and hang it at a high altitude. This environment is easy to accumulate a lot of dust, which can easily lead to the overheating protection of the projector after half an hour of booting, and it cannot be turned on. It is necessary to regularly ask special personnel to clean up the dust and prolong the service life. For the above reasons, the fundamental of prolonging the life of the bulb is to firstly shut down safely and fully dissipate heat, and secondly, keep the use environment clean and tidy. Using it in a place that is too humid will also shorten the service life of the bulb.