Furuno MU-200 Operator's Manual page 25

3. Unfasten 14 screws to detach the rear cover.
Display unit, rear view
4. Release the cables from the clamps marked with the arrows in the figure below.
J9
J10 J11
J5
J8
*
J6
J13
*
J7
* Do not release the cable from the clamp near the power assy. chassis.
Power section/CONE board assembly 10P6877
AP-5