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ZYF127 mining audio playback device 1.Overview ZYF127 mining audio playback device is mainly used in coal mines，According to the relevant provisions of national standard GB3836-2000，Designed for the needs of underground coal mines。It is to realize the interaction between underground and underground coal mines，Early Warning Notice，Early Warning Notice，Early Warning Notice、Program play、And can accept audio output signals from computers and various digital memories，It’s the workers above、During off hours、A safety promotion to relieve fatigue while waiting for a bus or walking、Entertainment Products。 2.Model meaning Product model complies with MT/T154.Provisions of 2-1996。 Z YF 127 Rated voltage Audio play Device 3. Playback device equipment composition (see table Appendix A) And comply with respective corporate standards，Products that have passed the inspection。 4. Applicable environment a)Ambient temperature: -5℃~+40℃ b) Average relative humidity of air: no more than 95% (at +25℃)； c) Atmospheric pressure: 80kPa~106kPa; d) Environmental noise: no more than 75 dB; e) There is an explosive mixture，But there is no corrosive gas that damages the insulation layer。 5. Technical indicators Technical indicators，The device consists of the following 5 types of equipment，The technical parameters are as follows: 5.1、ZYF127-K mining sealing and 12bet casino broadcast controller Rated input voltage: 127V AC Rated input current: ≤2.0 A Voltage fluctuation range: 80% ~ 120% of the nominal value. Rated power: 100W Audio voltage output: 110V 12bet casino input interface: 1 12bet casino input voltage: ≤12V DC 12bet casino input current: ≤1.3A 5.2、KXY12 Mine Casting and 12bet casino Speaker Rated audio input voltage: 110V Rated audio input current: ≤1 A Voltage fluctuation range: 80% ~ 120% of the nominal value. Rated power: 10W 12bet casino input interface: 1 12bet casino input voltage: ≤12V DC 12bet casino input current: ≤1.3A 5.3、DXJ220/12K mining sealing and 12bet casino power supply controller Rated input voltage: 220V, 127V Rated input current: 0.5A 0.8A Voltage fluctuation range: 80﹪～120% of the nominal value of the input voltage Rated power: 100W 12bet casino output voltage: ≤12V DC 12bet casino output current: ≤1.3A 5.4, ZYF127-M mining 12bet casino microphone 12bet casino working voltage: DC 5V; Operating current: ≤400mA; 5.5、FHS2/5 mining 12bet casino USB flash drive Operating voltage: 5V DC Operating current: ≤400mA 5.6 Sound level intensity ≥85dB。(1M away from the sound center) 5.7, Optical signal: optical signal visible distance ≥ 20m 5.8、The distance between the broadcast controller and the first speaker is ≤500m,The transmission distance between speakers is ≤500m. 5.9 Function: Connect the U disk to the broadcast controller，Audio output，Connect 5 speakers in parallel，You can save the audio signal stored in the USB flash drive，Send to 5 speakers，The speaker makes a sound，The sound is clear and pleasant。Connect a microphone to the broadcast controller，People speaking into microphone，You can hear the speech from the speakers。The broadcast controller only needs to be used underground in coal mines，Promotion of safety knowledge，Send a warning signal or play music, etc.。 6. Installation, use and maintenance 6.1 Please read this manual and installation diagram carefully before installation and use，See each standard diagram for wiring methods 6.2 Player should be placed in a guarded position，Connect the wires to both parties or one party。 6.3The component models in 12bet casino circuits and related circuits must not be modified during maintenance，Specifications and electrical parameters, etc.。 6.4 "It is strictly prohibited to open the cover and perform maintenance while the power is on". 6.5 products can only be paired with the equipment specified in the manual，Connection with other equipment must undergo explosion-proof inspection。 7. Installation connection diagram: 1. Common faults and troubleshooting methods (see Table 1) Table 1 Fault phenomenon Main reason Exclusion method No microphone signal input Poor contact in the audio connector Replace audio connector There is noise in the speaker output Poor contact at the junction box terminals Replace terminal block 9.Safety Precautions a) It is strictly prohibited to change the electrical parameters of equipment and main components in the playback device that have not been jointly inspected、Specifications、Model； b) It is strictly prohibited to open the cover and perform maintenance while the power is on; c) Pay attention to daily maintenance，Regular maintenance，Make sure the system is working properly。