Introduction
This guide gives instructions on how to remove the Left-Side Motherboard (Green) of the Toshiba SD-K740 DVD player, which controls the display and disc drive function.
Tools
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            Turn the DVD player on its side. 
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            Remove the 7.7 mm screw. 
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            Flip the DVD player onto its other side. 
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            Remove the 7.7 mm screw. 
 
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            Flip the DVD player over onto its front face. 
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            Remove the back panel by lifting up and pulling it towards yourself. 
 
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            Remove the first of two multipin cables connected to the Left-Side Motherboard (Green) by pulling vertically. 
 
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            Remove the second of two multipin cables connected to the Left-Side Motherboard (Green) by pulling vertically. 
 
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            Remove the first of three ribbon cables on the left hand side of the disc drive by pulling vertically. 
 
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            Remove the second of three ribbon cables on the left hand side of the disc drive by pulling vertically. 
 
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            Remove the third of three ribbon cables on the left hand side of the disc drive by pulling vertically. 
 
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            Lift the motherboard from the rear and pull backward (towards you) to remove it entirely from the case. 
 
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To reassemble your device, follow these instructions in reverse order.