Samsung RS 24 Service Manual page 50

Diagnostics
10-5) If alarm sound
1) If "Ding-Dong" sounds continuously
Freezer door MICOM No. 43,
Fridge door MICOM No. 44
– Regular voltage are 5V to Open :
0V to Close.
Separate the door S/W and
check if the measured value of
unit is changed from 0 to∞Ω
according to S/W ON/OFF.
2) If "Ding-Dong" sounds continuously
Start
Isn't the door opened minutely?
No
Isn't water penetrated
into the door S/W?
YES
Is the input voltage of
main No. 43 and 44 changed at door-open,
door-close?
YES
Is the state of inserted connector
(CN30)being normal?
YES
Is the door S/W self-unit normal?
YES
Main PCB and door S/W are normal.
Start
Didn't you
select forced operation and forced
defrosting?
YES
Do buzzer
still sound after power-on
again?
YES
Check if there is any short parts due to
foreign matters and the test
jumper part in the main-PCB.
50
Yes
Remove causes after
comprehending the conditions of
interference by door gasket, food etc.
NO
Exchange the door S/W.
NO
Troubleshoot the breaking of wire and
bad door S/W.
NO
Connector not inserted. Troubleshoot
poor contact.
NO
Exchange the door S/W.
Selected
Release the forced operation and
forced defrosting functions, or turn ON
again after power OFF.
NO
Main-PCB is normal