Casio 120CR Service Manual page 8

5. Open upper case by lifting it from the left side.
6. Remove all the cables on Main PCB and remove 3
screws.
Push the connector.
Pull the wires.
7. Lift up the Main PCB to the right side to avoid the
destruction of Display tube.
Be careful not to damage the point A.
Remove 3 screws.
Hook
Point A
— 6 —
Hook