Samsung DMR78AHS/XAC Service Manual page 28

3. Disassembly and Reassembly
Part
Panel Control
(DMR57 series)
3-14
Photo Description
5. Remove the four (4) screws holding the PCB assy
and panel control in place.
Remove all the connectors connected to the PCB
assy.
6. You can remove the PCB assy.