Einleitung
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Docking via 3 pcs. connectors sliding sideways into the laptop.
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Power connector used is the square type.
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Keep track of where the screws are located, because there are many.
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Be careful on disassembly. The dock is partly mechanical, and it relies on springs and flexing of mechanical parts to function.
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Check if the firmware is updated. In this case, the repair may not be needed. The dock needs to be powered and laptop docked when running the update tool.
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Use plastic picks or a metal spudger to pry off the top left corner of the shown cover. Remove the hidden screw.
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Lock engaged (LED on). The switch is located inside the button assembly.(when the slider is moved right).
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Laptop connected/detected: LED on.
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Screw for removing the key-lock. No need for removal if the whole button assembly is to be removed together.
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Pry off the bezel around the key-lock. Remove the screw that connects the button assembly and the bottom assembly.
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Use plastic picks or a metal spudger to pry off the top covers of the two screws on the top side.
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PCB top side
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Red boxes : Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs. Texas instruments: TPS51225
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Left step down produce 5V
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Right step down: produce 3V3 and 5V
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There are three Eeprom on board : winbond: 25x10CLNIG , 8 pin, U4 and U10 (1M-bit SPI)
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VLI marked IC: Via labs Usb port controllers VL820. https://www.via-labs.com/product_show.ph...
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Synaptics VMM5322.Have features for HDMI and 2xDisplay port out.
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PCB bottom side
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Red boxes : usb-c controller ICs. Via Labs inc, : VP225 - USB Type-C DFP CC Controller
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Blue box: 2 pcs. cypress CYP3123 USB type C port controller. https://www.cypress.com/part/cypd3123-40...
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Red arows: 20V path to the laptop usb-c charge power.
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To reassemble your device, follow these instructions in reverse order.