Check, there is a disc machine heart cannot quit, but changing the disc can rotate flexibly. Measured CD part and the motherboard connection interface (the "beginning in the radio state machine) voltage as shown in table. The machine on the mainboard IC 784224 ygc113 e40ck (0315), LC72135, TDA7404D. CD heart plate IC: D63711AGC, BA6397FP. jtMservice manual download site
 jtMservice manual download site
Analysis since the disc has been in place, with the radio and adjust the time related key works, CPU (784224 ygcll3) normal. No voltage, CD interface should be related to CPU outstanding power supply instructions. Why can a CPU on CD part of power supply instructions? Doubt is CPU has not received the disc warehousing in position signal. Hands are withdrawing discs (disc in and out of the machine and the feed drive sharing the same machine), one warehouse in position detection switches, one side with a multimeter test, found housing in place detection switch is damaged. This person in place detection switch between CPU and even meet with the appended drawings. A new testing switch after the commissioning, troubleshooting.jtMservice manual download site