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After completing the Outer Shell Disassembly guide, this process will aid in replacing the HP Photosmart c4780 motherboard with minimal technical requirements.
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Unplug the device from any energy sources.
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Lift the top cover of the scanner.
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Use a plastic opening tool to remove the plastic frame surrounding the glass.
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Carefully pull the frame away from the glass.
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Use a T10 screwdriver to unscrew the two screws that fasten the frame to the printer hood.
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Put your finger behind the panel with the power button.
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Then, pull the piece outwards.
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Unscrew the screw inside the power button panel space.
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Then, unscrew the screw that is across the printer slider.
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Pull the white circuit board outwards which is located under the small screen.
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Unplug the small ribbon cable from the circuit board.
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Unplug the small ribbon cable from the circuit board. Be careful when you unplug the ribbon cable not to use too much force. Using too much force may damage or rip the cable.
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Pull the memory card reader's circuit board out.
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Detach the white wiring connector from the back of the circuit board.
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Put your finger behind the small screen.
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Then, pull it up.
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Disconnect the ribbon cable from the small screen.
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Remove the three uncovered T10 screws from the motherboard.
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Gently remove the seven cables that are attached to the motherboard using a plastic opening tool.
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Gently lift motherboard out of the slot.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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Cal Poly, Team 2-11, Propen Fall 2012 crwdns2935289:0Cal Poly, Team 2-11, Propen Fall 2012crwdne2935289:0
CPSU-PROPEN-F12S2G11
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