Samsung LS3165H52HR, Service Manual

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61
TROUBLESHOOTING
4-17) When the internal lamp of the freezer/fridge does not light up
Start
YES
YES
Replace LED LAMP PBA
※
Reed S/W : Open when
door is open Short when
door is closed
Check REED S/W or
check whether door and
home bar are switching
normally
Check wire disconnection,
check DC 12V output
Measure voltage between when opening the F-Door
Measure voltage between when opening the
R-Door
NO
NO
Is the Reed S/W operating
normally?
Is the output
of LED-LAMP 12V when Door is
open?
1. When the DOOR is open, the DOOR S/W becomes OPEN. Micom senses 5V from Door S/W and recognizes that
the Door is open. If 5V has sensed for more than 2 minutes, buzzer will sounds “DingDong” every 1 minute.
Therefore, if the DOOR S/W is defective, it can generate the “Ding Dong” sound every 1 minute.
2. ON/OFF control of the internal lamp is linked with the DOOR S/W.
Reference
<LED LAMP control method>
Fridge internal lamp Freezer internal lamp
Model with LED LAMP applied
On : Fridge door is open or
Fridge HomBar is open
On : Freezer door is open or
Freezer HomBar is open
IC76 - LED LAMP IC77 - LED LAMP