Samsung RS257BABB Service Guide - Page 50

Without sound of buzzer operation, Start

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Diagnostics 3) Without sound of buzzer operation This model is equipped with a buzzer in Panel PCB. When there is no buzzer sound with button input, forced operation or door open, disassemble Panel PCB and check if the buzzer is broken or soldering is defective. It is difficult to repair Panel PCB because it consists of SMD components. When it is not a repairable defect regarding button press or minor scratch, it is recommended to change the Ass'y. Start Does a "Ding Dong" sound come out when a button on the front panel is pressed? NO Does a door open warning sound come out when any of F/R-Doors remains open over 2 minutes? NO Is the buzzer on Panel PCB broken or bent? NO Does lead on the buzzer vibration panel come off? NO Check the button pressing power & its mechanism YES Main PCB Normal, Buzzer Normal YES Refer to "How to Check Panel YES Display" and check Panel PCB Buzzer Breakage - Replace YES Replace Buzzer or Panel PCB 50

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50
Diagnostics
3) Without sound of buzzer operation
Start
Main PCB Normal, Buzzer Normal
Refer to
“How to Check Panel
Display” and check Panel PCB
Buzzer Breakage - Replace
Check the button pressing power & its
mechanism
YES
YES
NO
NO
YES
NO
Replace Buzzer or Panel PCB
YES
NO
This model is equipped with a buzzer in Panel PCB.
When there is no buzzer sound with button input, forced operation or door open, disassemble Panel PCB and check if the
buzzer is broken or soldering is defective.
It is difficult to repair Panel PCB because it consists of SMD components. When it is not a repairable defect regarding button
press or minor scratch, it is recommended to change the Ass’y.
Does lead on the buzzer vibration panel come off?
Is the buzzer on Panel PCB broken or bent?
Does a door open warning sound come out
when any of F/R-Doors remains open
over 2 minutes?
Does a
“Ding Dong” sound come out when
a button on the front panel is pressed?