Introduction
This is a teardown guide for the auto-empty dock, model Onyx3, for Roborock's robotic vacuums.
This guide does not show how to get to the suction fan, and mostly focuses on the motherboard/PSU.
I may update it further in the future.
Tools
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Let's begin by removing its ramp. Flip it on it's head.
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Use a PH2 screwdriver to unscrew the screws, then take the ramp off.
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Take out the PCBA+PSU assembly.
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Remove the connecting cable between the PSU and the main PBCA.
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Unscrew the PSU.
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Remove the PSU.
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