KTV common troubleshooting
1. Projector failure:
1. Phenomenon: The screen is black, the indicator light is always on, and there is a fan rotating sound inside.
Treatment method: This kind of fault is generally caused by the projector working time is too long, the temperature inside the machine is too high, and the protection circuit works. Generally, there is no need to deal with such problems. Wait for two minutes, the machine will start working on its own, remember not to blindly Turn off the projector.
2. Phenomenon: The screen is blue, the indicator light is always on, and there is a fan rotating sound inside.
Processing method: This type of fault is caused by no signal input. Check whether the video signal cable jack on the back of the projector is in good contact. If it is good, check the video output jack on the back of the set-top box to activate the plug and troubleshoot.
3. Phenomenon: The screen is white.
Treatment method: When such a problem occurs, the projector itself is generally faulty, and it is not necessary to check it, and directly change the projector or hand over the shift.
2. Network failure:
1. Phenomenon: A song is not finished, automatically cut to the next song.
Processing method: This kind of fault is generally caused by the busy server network at the time, or the damage of a certain song, and generally is not processed.
2. Symptom: The network is interrupted on the screen. Please contact the administrator.
Solution: First open the cabinet, see if the green light of the set-top box is on, and check the network cable connector, plug it, and solve the problem.
3. Power amplifier failure:
1. Phenomenon: The music has sound, the microphone is silent or loud.
Solution: Replace the microphone.
2. Phenomenon: no music, the microphone has sound.
Solution: First check if it is in the mute state. If it is normal, check the audio output plug of the set-top box or the audio input plug on the rear of the amplifier, and if the line is broken, the fault is eliminated.
3. Phenomenon: The microphone and the music are silent.
Solution: Open the cabinet to see if the power lamp of the power amplifier is on, and the signal input indicator is normal. If it is normal, check whether the cable behind the speaker is disconnected and the fault is eliminated.
Four. Touch screen failure:
1. Phenomenon: Black screen, the indicator light is off.
Processing method: Check the button switch after the touch screen, and open it. If there is no response, stop it and pay for it.
2. Phenomenon: Arrows fly freely and are not controlled.
Solution: Restart the set-top box, the fault is generally excluded. If the fault persists, pay the shift.
Five. Amplifier panel name function recognition:
1: Total reverberation volume: ECHO Vol This knob can control the direct sound volume of the reverberation echo, that is, the total reverb effect is more or less!
2: Total microphone volume: MIC VOL This knob controls the volume of all microphones.
Note: There are 3 microphone volume control knobs under the total volume of the microphone, which can control the volume of each microphone separately: MIC1 (microphone 1 volume) MIC2 (microphone 2 volume) MIC3 (microphone 3 volume), try not to adjust it separately.
3: Total music volume: MUSIC VOL This knob can control the volume of the computer accompaniment. Adjust the knob to achieve the size of the song sound.
Six. Tuning skills:
1: About the microphone howling.
Usually the microphone whistling is caused by the excessive volume of the microphone. It is caused by the excessive volume of the microphone or the excessive volume of the individual microphone. Another cause of the microphone whistling is caused by the excessive sound quality of the microphone. Listen carefully to the frequency of howling: a very harsh scream is caused by the MIC TREBLE, and the treble of the microphone must be reduced. If it is very low whistling, the whistling that feels a little vibration is caused by too much MIC BASS (microphone bass), you must reduce the microphone bass.
2: Under normal circumstances, that is, during business hours, if the guest asks to adjust the lightness and weight of the reverberation, try not to adjust the REPEAT or DELAY in the reverb effect, as long as the ECHO (ECHO VOL) ​​is increased or decreased. !
3: The control of the volume of the computer music accompaniment should not cover the voice of the guest singing. Otherwise, the guest will feel hard, hard and strenuous.
Guangdong Ojun Technology Co., Ltd. , https://www.ojunconnector.com