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1.汽车音响功放故障检修快速定位方法(1)首先确认连接线和喇叭是否完好由于汽车音响主机安装在汽车仪表盘内,而喇叭则视车型安装在仪表台板、车门板、后厢台板等处,主机与喇叭之间的连接线长而隐蔽,连接线和线头易搭铁或脱落,造成主机无声。当出现无声故障时,应在确认连接线和喇叭完好的情况下,才能对主机作进一步的检查。(2)音响无声故障集中在收、放音电路根据以往检修经验,汽车音响主机无声故障主要集中在收、放音共用电路上。收音或CD音频信号输入电子音量控制IC后,在CPU的控制下从电子音量IC输出四路前置音频信号(FL、RL、RR、FR),送入功放IC。
1. Car audio amplifier troubleshooting quick positioning method (1) first confirm the connection lines and speakers are intact as the car audio host installed in the car dashboard, while the horn is depending on the model installed in the instrument board, the door plate, the rear plate And so on, the host and the speaker between the long and hidden cable, cable and wire head easily take off or fall off, causing the host silent. When there is a silent fault, you should make sure the cable and speaker are in good condition to check the host. (2) audio silent fault focus on the receiving and playback circuit based on past experience in maintenance, car audio host silent failures are mainly concentrated in the receiving and playback on the shared circuit. After the radio or CD audio signal is input to the electronic volume control IC, four pre-audio signals (FL, RL, RR, FR) are output from the electronic volume IC under the control of the CPU and sent to the power amplifier IC.