Car Radio Teardown: The Jinzheng ACR-688145

The Jinzheng ACR-688 is a budget-friendly car radio that offers a decent range of features for its price point. It features a built-in Bluetooth module for hands-free calling and music streaming, as well as support for USB and SD card playback. In this teardown, we will take a closer look at the ACR-688 and see what makes it tick.

External Components

The ACR-688 has a simple and straightforward design. The front panel is dominated by a large LCD display, which shows the current time, station name, and other information. Below the display are a number of buttons for controlling the radio's various functions. The left side of the panel houses a volume knob, while the right side has a tuning knob and a number of preset buttons.

The back of the radio is home to a variety of connectors. There is a standard DIN connector for connecting the radio to the car's wiring harness, as well as a 3.5mm auxiliary input for connecting an external audio source. There is also a USB port and an SD card slot for playing music from external storage devices.

Internal Components

Inside the ACR-688, we find a fairly standard layout. The main PCB is located in the center of the radio, and it houses the radio's main components, including the microprocessor, the tuner, and the amplifier. The Bluetooth module is located on a separate PCB, which is connected to the main PCB via a ribbon cable.

The ACR-688 uses a single-chip solution for its radio functionality. This chip includes a tuner, an amplifier, and a microprocessor. The tuner is responsible for receiving and demodulating the radio signal, while the amplifier is responsible for driving the speakers. The microprocessor is responsible for controlling the radio's various functions, such as tuning, volume, and preset selection.

The Bluetooth module is a separate component that is responsible for handling Bluetooth connectivity. It includes a Bluetooth transceiver and a microcontroller. The microcontroller is responsible for handling the Bluetooth stack and communicating with the main PCB.

Conclusion

The Jinzheng ACR-688 is a well-built and feature-rich car radio that offers a lot of value for its price. It has a simple and straightforward design, and it is easy to install and use. The ACR-688 also has a number of features that are not typically found in budget-friendly car radios, such as Bluetooth connectivity and support for USB and SD card playback. Overall, the ACR-688 is a great choice for anyone looking for a good quality car radio at a reasonable price.

2024-11-26

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