Samsung SR-S25NTA Service Manual page 65

Reference No. 5) Check method of DOOR S/W , see )
Perform ihe chek when the power is supplied,
'DOOR S/Wis consisted of 2 contacts: es
circuit. 1 contact senses DOOR OPEN/ :
CLOSE at PCB by DC 5V and another has é ae
i role of ON/OFF of the inside lamp. *: mo
be
i.
be
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be
To Fluorescent Lamp
(Lamp Inside the Refrigerator)
1. Since there is a fluorescent lamp in the Refrigerator, at first, open the door of the Refrigerator
to check whether the lamp is normally on. If normally on, check whether the lamp is normally
off by pushing DOOR S/W while R-DOOR is opened.
If there is any problem, check DOOR S/W of the refrigerator.
2. Fluorescent lamp of HOME BAR is also to become ON by DOOR S/W when the door is opened.
If the lamp does not come to be ON by the opening of HOME BAR, check HOME BAR SW.
(Refrigerator DOOR OPEN SENSOR at MAIN PCB)
1. Check the voltage by placing (+) terminal on @ and (-) terminal on @ of CN31.
2. If about DC 5V is measured on Refrigerator DOOR OPEN, it is normal.
3. If about DC OV is measured on Refrigerator DOOR CLOSE, it is normal.
When there is any problem, check the wire connection and DOOR S/W.
4. HOME BAR S/W does not have DOOR OPEN Sensor.
(Lamp Inside the Freezer)
1. There is a generally used glow lamp in the Freezer. This lamp is controlled not by the coitact of
DOOR SM, but by RELAY on MAIN PCB. DOOR S/W senses DOOR OPEN/CLOSE oaithe
door of the Freezer. One contact is used to control the Ice-Dispenser.
Check the lamp inside the Freezer according to the method described in the above.
(Freezer DOOR OPEN SENSOR at MAIN PCB)
1. Check the voltage by placing (+) terminal on © and (-) terminal on @ of CN30.
2. If about DC OV is measured on Freezer DOOR OPEN, it is normal.
3. lf about DC 5V is measured on Freezer DOOR CLOSE, it is normal.
When there is any problem, check the wire connection and DOOR S/W.