Samsung RS757LHQESR/ Series Service Manual page 57

DISASSEMBLY AND REASSEMBLY
6) When the alarm sound will not turn off.
▶ Freezer Door Closer (5V)
▶
Freezer Door Open (0V)
Freezer Door CN7 ⑥-⑬
Fridge Door CN7 ⑦-⑬
- Normal Voltage : Open 0V & Close 5V
When measuring the resistance of the Door S/
W, check if it shifts 0Ω ↔∞Ω as turning on
and off the Door S/W.
① When Door Open "Sound" keeps alarming
START
Door is not closed
completely.
Is there any water
penetrated into the Door S/W?
YES
Does the input voltage
of PCB CASE CN7 ⑥-⑬, ⑦-⑬
change when opening and
closing the Door?
YES
Is the PCB CASE CN7
Wiring connected to the MAIN PCB
properly?
YES
Is the Door S/W normal?
YES
MAIN PCB / DOOR S/W Normal
When alarm sound "Beep" continues
②
START
The unit is in Forced Operation or
Forced Defrost mode?
NO
When the unit is plugged out and in
again, it keeps beeping?
YES
Check if there is any foreign substance
on the Test Jumper of Main PCB or any
short-out part
56
Gap exists
Check if there is anything pushing out
the Door.
NO
Replace Door S/W
NO
Repair Wire Cut / Door S/W
NO
Insert the Connector
Repair the Connector Contact
NO
Replace Door S/W
YES
Cancel Forced Operation/Defrost
or Re-plug the unit
NO
MAIN PCB Normal