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Schematic Exclusive Patched: Wlx896b

The WLX-896B (often associated with the Product Schematic brand or the SS-304D model) is a multi-port USB desktop charging station. It typically features 6 USB ports with a total output of 40W. Core Circuitry and Components

Baseband / Digital

The WLX896B schematic has a wide range of applications across various industries, including: wlx896b schematic exclusive

It includes the P2803BD reverse protection FET.
It labels the compensation network explicitly (not just "Cx").
It has a revision history box dated 2022.10.21 (the final engineering build).

CS (Chip Select): Pin 7 of flash -> Pin 12 of IC-A
CLK: Pin 6 -> Pin 14 (This line has a 22R series resistor – do not bypass)
MISO/MOSI: Pins 2 & 5 -> Pins 11 & 13 (Yes, it is swapped compared to standard Arduino layouts)

1. Input Filtering & Reverse Polarity Protection

Components: Dual 220µF electrolytic caps, a 10µH common-mode choke, and a P-channel MOSFET (marked P2803BD).
Schematic Insight: The gate of the MOSFET is tied to ground via a 10kΩ resistor. This is critical—if you read 0V at the drain during repair, this resistor is likely open.