When Alarm Sound Continuous Without Stop(Related With Buzzer Sound) - Samsung RF267AE series Service Manual

TROUBLESHOOTING

4-2-8. When alarm sound continuous without stop(related with buzzer sound)

① If 'ding-dong'sound continuously
Seperate the door switch andcheck if
the measured value of unit is
changed from 0Ω to ∞Ω
according to switch ON/OFF.
* FF Door Switch is magnetic switch.
(It can be operated when door
magnet is combined with it.)
Door & MICOM State
F
R MICOM(#82)
Door MICOM
Right and Left
(#83)
0V(Low)
Close 5V(High)
5V(High)
Open 0V(Low)
② If 'beep-beep' sounds continuously
Start
Door is ajar
Is door closed
completely?
Is water penetrated
into the door switch?
Is the door
switch unit normal?
Is the connector(CN30)
inserted correctly?
Is the input
voltage of main #83 and #82
changed at door-open and close
status?
MAIN PCB & Door S/W is normal.
Recheck and replace Panel PCB
Start
Is manual operation
/defrost selected?
Does buzzer sounds
when power On again?
Recheck and Replace Panel
PCB
74
Remove causes after comprehending
the conditions of interferance by door
gasket, food etc,
Replace Door S/W
Replace Door S/W
Connector is not inserted,
Repair disconnect part
Repair wire connection and
Door S/W
Enforce the cancelation the
manual operation/ defrost function
or power On after power Off
Normal