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Lenovo Thinkpad Ultra Dock AJ40 Disassembly

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  1. Lenovo Thinkpad Ultra Dock AJ40 Disassembly, Overview: 手順 1、 1の画像 1

    • Docking via 3 pcs. connectors sliding sideways into the laptop.

    • Power connector used is the square type.

    • Keep track of where the screws are located, because there are many.

    • 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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  2. Lenovo Thinkpad Ultra Dock AJ40 Disassembly, Firmware Check: 手順 2、 1の画像 1

    • 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.

    • Firmware update tool : Firmware for ThinkPad Ultra/Pro/Basic Docking Station V3.3.1

    • https://pcsupport.lenovo.com/dk/da/produ...

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  3. Lenovo Thinkpad Ultra Dock AJ40 Disassembly, Bottom Screws: 手順 3、 1の画像 1

    • Remove the 8 bottom screws circled in red.

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  4. Lenovo Thinkpad Ultra Dock AJ40 Disassembly, Side screw removal: 手順 4、 1の画像 1

    • Remove the 5 screws circled in red from the side of the dock.

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  6. Lenovo Thinkpad Ultra Dock AJ40 Disassembly, Hidden screw + Lock: 手順 5、 2の画像 1 Lenovo Thinkpad Ultra Dock AJ40 Disassembly, Hidden screw + Lock: 手順 5、 2の画像 2

    • Use plastic picks or a metal spudger to pry off the top left corner of the shown cover. Remove the hidden screw.

    • Lock engaged (LED on). The switch is located inside the button assembly.(when the slider is moved right).

    • Laptop connected/detected: LED on.

    • Screw for removing the key-lock. No need for removal if the whole button assembly is to be removed together.

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  7. Lenovo Thinkpad Ultra Dock AJ40 Disassembly, More hidden screws: 手順 6、 1の画像 1

    • Hidden screw under the ThinkPad logo.

    • I recommend peeling off only part of the logo as needed so reassembly of the logo is easy.

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  8. Lenovo Thinkpad Ultra Dock AJ40 Disassembly, Bezel: 手順 7、 1の画像 1

    • Pry off the bezel around the key-lock. Remove the screw that connects the button assembly and the bottom assembly.

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  9. Lenovo Thinkpad Ultra Dock AJ40 Disassembly, Top Covers: 手順 8、 1の画像 1

    • 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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  10. Lenovo Thinkpad Ultra Dock AJ40 Disassembly, Docking connectors: 手順 9、 1の画像 1

    • Button assembly separated. The docking connectors are visible.

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  11. Lenovo Thinkpad Ultra Dock AJ40 Disassembly, PCB top side: 手順 10、 1の画像 1

    • PCB top side

    • Red boxes : Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs. Texas instruments: TPS51225

    • Left step down produce 5V

    • Right step down: produce 3V3 and 5V

    • There are three Eeprom on board : winbond: 25x10CLNIG , 8 pin, U4 and U10 (1M-bit SPI)

    • VLI marked IC: Via labs Usb port controllers VL820. https://www.via-labs.com/product_show.ph...

    • Synaptics VMM5322.Have features for HDMI and 2xDisplay port out.

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  12. Lenovo Thinkpad Ultra Dock AJ40 Disassembly, PCB bottom side: 手順 11、 1の画像 1

    • PCB bottom side

    • Red boxes : usb-c controller ICs. Via Labs inc, : VP225 - USB Type-C DFP CC Controller

    • Blue box: 2 pcs. cypress CYP3123 USB type C port controller. https://www.cypress.com/part/cypd3123-40...

    • Red arows: 20V path to the laptop usb-c charge power.

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終わりに

To reassemble your device, follow these instructions in reverse order.

4 の人々がこのガイドを完成させました。

作成者

3人の作成者と共同で作成されました。

Carsten Dahl Hjarup

メンバー登録日: 11/04/13

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