4714374 Original Excavator Radio for ZX200-5A

The original radio part number 4714374 is the core component of the car entertainment system provided by Hitachi Construction Machinery for the ZX200-5A 20 ton hydraulic excavator (with a total working weight of approximately 20.2 tons). This radio is integrated into the multifunctional monitor in the driver's cabin and supports AM/FM FM radio, Bluetooth audio, USB/AUX external audio playback, providing audio entertainment functions such as music, news, and communication for the operator. Its universal model is usually directly labeled as 4714374 and is also applicable to ZX210H-5A, ZX330-5A and other series of models. It belongs to the original factory integrated design and is deeply matched with the vehicle circuit and CAN bus. It is strictly prohibited to replace it with the auxiliary factory universal radio to ensure electrical compatibility and operational stability.

This product is an original car radio module that uses DSP digital signal processing chips (such as Silicon Labs Si47xx series). The receiving frequency range covers FM 87.5-108 MHz and AM 522-1620 kHz, and supports RDS radio station information display. Audio output power ≥ 4 × 20W, signal-to-noise ratio>60dB, total harmonic distortion<0.1%. The physical interfaces include ISO standard power plug, FAKRA antenna interface, USB 2.0, 3.5mm AUX, and Bluetooth 4.2 module. The working voltage is DC 12-24V, the protection level is IP54 (dustproof and waterproof), the working temperature range is -30 ℃ to+70 ℃, and the seismic resistance level complies with ISO 10816-1 (vibration acceleration<1.5g). It is suitable for harsh working conditions such as high vibration, high dust, and electromagnetic interference of excavators.

Daily inspection: Clean the screen and buttons every 250 working hours (using a soft dry cloth); Check if the antenna connector is loose and if the wiring harness is worn. Functional testing: Monthly testing of the receiving sensitivity of each frequency band (FM should be able to stably receive ≥ 5 local strong stations); Use diagnostic mode (simultaneously press and hold the MENU+power button for 3 seconds) to view the software version and fault codes. Fault diagnosis: If there is no sound at all, first check the driver's cabin fuse F101 (3A/24V) and power line voltage (normal 12.6V ± 0.3V); If there is a lot of noise during the reception, check the antenna impedance (standard 50 Ω) and grounding wire; If Bluetooth/USB is not recognized, try resetting to factory settings (enter the settings menu and select initialization). Software upgrade: The firmware can be upgraded through the OBD-II diagnostic port or USB (supporting versions V2.3.1 to V3.0.5), and it is necessary to backup the radio storage before upgrading.