Stanicek
6th August, 2023, 09:51 AM
Radio as in the subject. Smartradio CC scheme (G.HH 76-00) fits. On sticker MC341321121366, 0013413 V007 C59Z 00.
The radio does not turn on. After connecting the KL15+KL30 and GND power supply, the backlight works. The power button does not turn on. When powered by 12V, it draws 190mA. Quartz generates waveforms. Pressing the ON/OFF button changes the state on pin 41 of the processor by about 1V. I tried changing batches with CarProg with no result. I went back to the original batch. The accident made the radio work. This case is an accidental power short with the MC68HC711KA22CFN4 processor. Then the current drawn dropped to 35mA and the clock was displayed. From then on, the power button works and the radio works normally until power is applied. Pressing the power button changes the state from 5 V to 0 V. You can turn on, off, search for stations, etc. Disconnecting the power causes the state as at the beginning, i.e. no start. Smart car radio. There must have already been interference because the radio starts without a code and you can see traces of soldering related to motorola programming. Forcing a reset does nothing, I would like some advice from more experienced colleagues in the subject of the radio. I repair laptops.
The radio does not turn on. After connecting the KL15+KL30 and GND power supply, the backlight works. The power button does not turn on. When powered by 12V, it draws 190mA. Quartz generates waveforms. Pressing the ON/OFF button changes the state on pin 41 of the processor by about 1V. I tried changing batches with CarProg with no result. I went back to the original batch. The accident made the radio work. This case is an accidental power short with the MC68HC711KA22CFN4 processor. Then the current drawn dropped to 35mA and the clock was displayed. From then on, the power button works and the radio works normally until power is applied. Pressing the power button changes the state from 5 V to 0 V. You can turn on, off, search for stations, etc. Disconnecting the power causes the state as at the beginning, i.e. no start. Smart car radio. There must have already been interference because the radio starts without a code and you can see traces of soldering related to motorola programming. Forcing a reset does nothing, I would like some advice from more experienced colleagues in the subject of the radio. I repair laptops.