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Roland® D-50 Disassembly
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To disassemble the Roland D-50, lay the keyboard on its top but avoid resting it on the joystick or the left-hand pitch knob.

Remove all of the bottom screws except for the feet (right) plus five smaller screws along the bottom of the rear panel.

Roland D-50 Bottom Tray

Lift off the bottom tray and set it aside.

Roland D-50 Bottom Tray Removed

Now you'll see the D-50 Main Board.  It must be detached because it prevents access to the keyboard assembly.

Seven brass screws, marked with red tape in this photo, hold down the board.  Once the board is loose, swing it up and away from the key frame.

You'll have to cut a couple of plastic cable ties but no wires need disconnecting.

D-50 Main Printed Circuit Board

Next, detach the Key Scan circuit board (right) by first removing the three brass screws that hold it down.

Scan Printed Circuit Board

Before swinging the Scan board away from the key frame, unplug the four cables shown here.  Two multi-pin plugs are hidden under the board.

The next task will be to remove the keyboard assembly from the D-50.

Roland D-50 Scan Printed Circuit Board

Roland® D-50
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