Samsung RF31FM Series Manual page 201

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6. Self Diagnosis & Trouble Shooting
6-10. If Pantry Panel PCB is not working normally
If Panel Key is not selected
① Check the wires of Pantry Room - disconnection, short between wires
② Recheck the control circuit of MAIN PCB Pantry Panel
③ Check the wire assembling between Panel and MAIN
② If Panel PCB Key is not selected
※ If it is not repaired with the above basic checking method
YES
Is the lighting
operated when replace Pantry
Panel-PCB?
NO
Is a key pressed
continuously?
NO
Is the PCB system
still operated by separating
of the mechanism?
NO
YES
Panel PCB itself has trouble.
Reassemble PCB ASS'Y /
Pressed
Enforce the cancelation of
pressed keys
Operated by
Reassemble PCB ASS'Y /
separation
Enforce the cancelation of
pressed keys
To do list
201