Samsung RF32FMQDBSR/AA, RF32FMQDBSR/AA, Service Manual, Page: 105 / 127

105
TROUBLESHOOTING
4-2-16. When the internal LED Lamp of the F-Room or R-Room or Cool select-room is not turned on
Yes
Replace the door switch if
necessary.
No
Do the door and home
bar reed switches work properly?
Start
Is 9.5~12V applied to the
LED lamps when the door is
opened?
Replace the PBA if necessary.
Check the connections of the
connectors and wires.
No
Yes
Replace the LED Lamp PBA
Freezer : Measure the voltage between CN77 #1 and #2.
Fridge : Measure the voltage between CN77 #3 and #4.
Cool Select Room : Measure the voltage between CN74 #1
and CN10 #3
1. If the freezer door is opened, the door switch is open-circuited and 5V is input to the micom indicating that the door is open.
Then, if 5V is measured for 2 minutes or longer, the door open alarm "dingdong" sounds for 10 seconds every minute (1).
Therefore, if the door switch is out of order, the "dingdong" may sound every minute. Please make a note of this for customer service.
2. Turning the internal lamp on and off is controlled by the door switch.
Note.
※ Tips when checking the reed switch
The reed switch is turned on or off by the magnetic force of
the magnet attached to the door.
- When the reed switch is magnetised → 0Ω (when the door
is closed.)
- When the reed switch is not magnetised → ∞Ω (when the
door is open.)
If the magnetic force of the magnet on the door is weak or
the location of the reed switch is not correct, consider
replacing the part.
MICOM State
Door
MICOM(#65)
Right and Left
Close 0V(Low) 0V(Low)
Open 5V(High) 5V(High)
MICOM State
Door
FF CV
#64 #63
Close 0V(Low) 0V(Low)
Open 5V(High) 5V(High)
This document cannot be used without Samsung's authorization