In life, work and study, we have collected their favorite sentences, right, from the syntax point of view, the sentence is to make the largest grammatical unit. Then what kind of sentence is inspiring? The following is my collection of common Mitsubishi projector faults how to repair, welcome to share.
Mitsubishi projector common failures how to overhaul 1
Trouble 1: The projector can project normally when connected to the VCD, video Visualizer and other Video signals, but when switching to the computer RGB signals when the power is turned on, there is a display under DOS and enter Windows can not be projected normally.
Reason: The refresh rate of the computer is adjusted too high or the resolution of the computer is adjusted too high, exceeding the normal operating range of the projector, which is more likely to occur in the projector purchased two or three years ago with lower performance indicators.
Solution: Adjust the refresh rate of the computer to below 75Hz, reduce the resolution of the computer, and ideally make the projector work at its maximum physical output resolution (one level lower than the maximum input resolution), when the display is the best.
Trouble 2: The projector automatically shuts down after a period of time for no apparent reason, the "TEMP" indicator turns red, and after a few minutes can be turned on normally, and this failure occurs repeatedly.
Reason 1: Poor ventilation causes poor internal heat dissipation and starts the internal thermal protection circuit.
Solution 1: Clean the dust filter of the projector's air inlet and outlet to ensure that the projector's air inlet and outlet are unobstructed, and clean the projector's dust filter on a regular basis, as well as keep the projector's environment clean.
Cause 2: The high ambient temperature causes the internal thermal protection circuit to activate.
Solution 2: Install air conditioners, fans, and other devices in the projection room to cool down and dissipate the heat. If the projector is ceiling-mounted, make sure that the upper space of the projection room can also be cooled down properly.
Reason 1: The projector focus is not adjusted. Solution 1: Remotely or manually adjust the focus of the projector.
Cause 2: The projector's lens or dust filter has accumulated too much dust.
Solution 2: Clean the projector's lens, dust filter, and have a professional handle the dust inside the projector.
Cause 3: The resolution of the projector is set too high
Solution 3: Reduce the resolution of the projector.
Cause 4: Cutting off the power immediately after shutting down the projector causes the LCD panel inside the projector to age prematurely without sufficient cooling.
Solution 4: Replace the LCD panel inside the projector.
Trouble 4: The projector displays abnormal computer signals, with ghosting, faults, jitter, and no display under DOS
Reason: The projector's RGB signal mode does not match.
Solution: Select Auto mode or switch the projector input signal mode.
Failure 5: The projector does not display light-colored images and text clearly, and the difference between what is displayed on the monitor and what is displayed on the display is very large
Reason: The projector's brightness is set too high, and the contrast ratio is too low.
Solution: Adjust the brightness and contrast settings of the projector.
Trouble 6: The projector cannot display images
Cause: The external video port of the notebook is not activated.
Solution: Press and hold the 'FN' key on the laptop, and then simultaneously press the corresponding function key (F1, F2, F3, etc.) labeled with the LCD/CRT or monitor icon, or refer to the laptop's documentation for further information on activating the video port.
Trouble #7: There are pink streaks or clumps of spots on the screen, or tiny patches of spots that can be cleared by turning the focus ring.
Cause: Too much dust on the LCD and optical path.
Solution: Send it to a professional for cleaning.
Trouble 8: The projector "LAMP" indicator turns red.
Solution 1: Replace the projector lamp and try it.
Solution 2: The projector lamp power board is bad or the motherboard is bad, send a professional repair point repair.
Trouble 9: No response after the power on, the indicator lamp does not light up, and can not hear the power supply fan rotation.
Reason: The projector's power supply is bad or bad motherboard. Solution: Replace or repair the power supply, motherboard.
Trouble 10: After powering on the projector to play a white picture, the bottom or both sides of the screen red, red or green stripes on the edge.
Reason: the beam splitter position offset. Solution: Adjust the beam splitter position to adjust the LCD convergence.
Mitsubishi projector common faults how to repair 2
Power indicator does not light
Remove the projector separately connected to the power supply, check whether the power indicator light
● power indicator light: check whether the power cord is disconnected, whether the plug is plugged in solid
● power indicator does not light: check whether the projector is damaged
No image Ten minutes or so no
The lamp indicator flashes for a long time and the lamp does not light up.
●Replace the signal cable connected to the player
●Check whether the player has image output. Connect another player to test
●Check whether the input signal Judgment: You can replace the signal input device and test it.
●Determine whether there is a problem with the connection cable between the projector and the device. Judgment: You can replace the connection cable and test it.
● Whether the Brightness, Contrast, Color Temperature, Color, SRGB are adjusted in the Image Status column in the menu.
Judgment: If adjusted, need to restore to factory settings again. Judgment: Test by replacing the lamp with a new one.
Temperature indicator becomes bright Judgment: the machine temperature is too high, should be dusted.
Mitsubishi projector common problems how to repair 3
1, why the projector after the power on no response?
A: Since the projector does not have any response after the power is turned on, it means that the power supply part of the power supply of the projector is likely to have a problem, but is it the internal power supply of the projector or the external power supply that has a problem? To this end, you should first check the projector's external power supply specifications with the projector required by the same standard, for example, if the external power outlet is not grounded or the projector using the power cord is not the projector is equipped with a randomized, which may result in the projector's power input is not normal; once you determine the external power supply is normal, you can conclude that the projector's internal power supply circuitry is damaged, at which time you The only way to do this is to replace the projector's internal power supply with a new one.
2. Why does the projector suddenly shut down during operation?
A: The projector in the process of working if the sudden shutdown, there are two main reasons; one is the user may not be careful in the operation of the projector cut off the power supply, so you should first check to see if the projector is not caused by human factors to shut down the projector in the exclusion of such a situation, it is explained that the projector itself has a problem, and it is likely to be caused by the thermal protection. Because now there are many high-end projectors in order to extend the life of the projector, often using a self-thermal protection function, encountered inside the projector is too much heat generated, the projector's operating state will automatically work in this protective state, the projector will be automatically shut down, and in this state, the projector of any external input control is not to respond to any; therefore, this situation, you should not worry about! The projector will suddenly malfunction, you just need to turn on the projector again in the normal power-on sequence about half an hour after the projector is automatically turned off, and then the projector will be back to normal operation.
3. Why does the projected image appear to be a white color or even have blue-violet patches?
A: The projection screen will appear a white or even a blue-violet patch phenomenon that the projector's internal optical system in the red polarizer is damaged, the solution to this problem is to replace a new red polarizer. However, this red polarizer replacement operation, you need to open the projector shell, but due to the presence of high voltage inside the projector, may cause harm to the human body, so you'd better ask a professional maintenance personnel to replace the red polarizer, you can also send the projector to the repair store to replace.
4. Why does the projector return to normal operation after the power cord is replaced?
A: If the projector can work normally after changing the power cord, it means that there is no problem with the projector itself, and the problem should be in the projector power cord. Generally speaking, inferior projector power cord specifications and compatibility with the genuine projector power cord specifications and compatibility will have a very obvious difference, once the use of inferior projector power cord, then, may seriously affect the stability of the product use. Let's say the projector power supply specifications have 110V and compatibility with 220V and other types, if the unscrupulous manufacturers of 110V power supply specifications of the product after a simple modification to make it suitable for Chinese users of the product, then this product once purchased back to the compatibility of the product is certainly poor, short service life. Therefore, you should always test the projector's power supply on the spot when purchasing, and also check whether the projector's normal operating voltage is 220 volts.
5. Why can't the projector project the picture?
A: The projector can not correctly display the contents of the projector cable may have a problem, if the connection is very good, you then check with the projector connected to the laptop, whether it has activated the computer's external video port. Generally speaking, current laptops provide FN function switching key, press the key while clicking the corresponding function key identified as LCD/CRT or monitor icon, you can activate the computer's video port; in addition, you should also according to the projector's signal input port, to switch the projector to the corresponding RGB port, in order to ensure that the projector projection is normal.
6. Why can't I project the entire image?
A: Can not project the entire image content, indicating that the projector's display resolution has a problem, at this time you can re-adjust the computer's resolution parameters as well as the projector's resolution parameters, so that their sizes match each other.
7. Why does the projector produce distortion?
A: The projector projected content distortion distortion, it is likely that the projector and the projection screen between the position is not correct, to eliminate this distortion distortion phenomenon, then you can adjust the projector lifting feet, or adjust the projection screen position height, to ensure that the image projected on the screen is rectangular.
8. Why does the projector produce image color distortion?
A: The projector produces image color distortion phenomenon, it shows that the projector's color settings have problems, you can press the projector remote control or the projector control panel on the menu button, and choose to display the menu under the reset command, if this method can not solve the problem of color, then it is necessary to seriously check the display signal cable whether there is a bent or broken pins, if the pins are bent or broken, if the pins are bent or broken, then it is necessary to carefully check the display signal cable, if the pins are bent or broken, then it is necessary to check the display signal cable. If the pins are damaged, you will need to replace the display signal cable.