HJX-112-DC Di-i11 TWS Charging Board Circuit Repair Guide
HJX-112-DC / Di-i11 V4.0 TWS Charging Board Overview. The HJX-112-DC / Di-i11 V4.0 is a compact charging and power-management board designed for TWS earbuds charging cases. Its job is to accept external USB power, charge the internal battery, and then distribute stored battery power to the left and right earbuds through the charging contacts. The board contains a charging connector, a 2R2 power inductor , ZK406 charging IC , SY3408 earbuds charging IC , a mini switch, rechargeable battery connections, and supporting resistors and capacitors. Because small TWS charging boards can have different PCB revisions, exact component functions should always be confirmed from the physical board, PCB traces, and measured voltages before replacing parts. HJX-112-DC / Di-i11 V4.0 Component Overview. The reported board information is: Board Number: HJX-112-DC / Di-i11 Board Version: V4.0 Application: TWS Earbuds Charging Case Charging Connector: USB Type-C or Micro-USB depending on board version Power Bank Charg…
