Introduction
This guide shows how to separate the GameCube's optical drive assembly from the motherboard.
Tools
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            Turn over the Gamecube so that the bottom side is facing up. 
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            Use the 4.5 mm Gamebit screwdriver to remove all four screws. 
 
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            With the bottom side of the GameCube facing upward and the screws removed, carefully pull the outer shell of the unit away from the top half. 
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            Move the GameCube so that the inside is facing upwards. 
 
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            The left side of the unit contains the cooling fan and its housing. 
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            Carefully remove the two screws attaching the cooling fan housing to the unit. 
 
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            Remove the four Phillips #1 screws retaining the ground springs. 
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            Carefully remove the ground springs from the main unit. 
 
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            The optical drive is secured to a metal plate. 
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            Using a Phillips #2 screwdriver, unscrew the twelve screws that are around the outer edge of the optical drive. 
 
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            Carefully separate the optical drive assembly from the rest of the GameCube unit. 
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            The optical drive assembly is secured to the motherboard underneath by a slot; some force may be required to carefully free the assembly. 
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            The metal plate and the actual optical drive will remain attached. 
 
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To reassemble your device, follow these instructions in reverse order.