Samsung SR-S20DTC - Door Switch & Ice Lever Switch Check

Reference No. 5) Check Door S/W Fault & Ice Lever S/W Check Method )
| Check in state that power is applied.
| Door S/W is 2 contact-point circuit;
| one contact-point senses door
| open/close with DC 5V on PCB, and
|
the other contact-point lets refrigerator
inside lamp fluorescent On/Off.
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(R-Room Lamp Part)
1. When refrigerator door is opened, check whether lamp is lit up or not. If it is normal,
check whether lamp lights out or not when pressing DOOR S/W in the state that R-
DOOR is open. If any faults are found, check DOOR S/W of R-ROOM door.
(MAIN-PCB Sensing Part for R-ROOM Door Open )
1.Check voltage by applying “+” terminal to CN30 and “-” terminal to .
2. When R-ROOM door is opened, if about DC 5V is measured, it is normal.
3. When R-ROOM door is closed, if about DC OV is measured, it is normal. If any faults
are found, check DOOR S/W and wire connection system.
(F-Room Lamp Part)
1. When freezer door is opened, check whether lamp is lit up or not. If it is normal, check
whether lamp lights out or not when pressing door S/W in the state that F-DOCR is
open. If any faults are found, check door S/W of F-ROOM door.
(MAIN-PCB Sensing Part for F-ROOM Door Open )
1.Check voltage by applying “+” terminal to CN30 and “-” terminal to .
2. When F-ROOM door is opened, if about DC 5V is measured, it is normal.
3. When F-ROOM door is closed, if about DC OV is measured, it is normal. If any faults
are found, check DOOR S/W and wire connection system.
(ice Eject Lever)
1. In case ice is not ejected though ice eject lever which is installed at the front part of
freezer, check like the following.
2. First, check fault existence of F-ROOM DOOR SM. If no defect is found, separate
CN31 connector on the MAIN-PCB. Apply “+” terminal to and “-” terminal to, and check
resistance. Check it becomes 0 2 when ICE LEVER S/W was pressed. When it is
always oo regardless of ON/Off of S/W, check wire system and connection system.