Samsung FE-R300SW, Service Manual

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34
4. Troubleshooting
4-1 Failure Display Codes
* Explain of primary parts of Main PCB
ZNR1
(Varistor)
CN06 CN06
Warmer Drawer Relay Warmer Drawer Relay
IC02(7812) IC02(7812)
IC03(7805) IC03(7805)
Low Voltage Transformer Low Voltage Transformer
CN02 CN02
CN01 CN01 Black Black Blue + Gray Blue + Gray
DLB DLB BAKE BAKE BROIL BROIL
CN04,CN05 CN04,CN05
CN05
CN03 CN03
( Main PCB ) ( Main PCB )
( Sub PCB ) ( Sub PCB )
CN01 CN01
Broil Relay
(Black, Brown or Brown, Black)
Broil Relay
(Black, Brown or Brown, Black)
Bake Relay
(Yellow, Gray or Gray, Yellow)
Bake Relay
(Yellow, Gray or Gray, Yellow)
DLB Relay
(Orange, Red or Red, Orange)
DLB Relay
(Orange, Red or Red, Orange)
Explatin of the function of primary parts .
CN01
This is to supply power with primary on Low voltage transformer, and AC120V with main PCB through
harness .
CN02
This is connector which is connected with Door plunger switch and Door lock switch .
(COM-NO, COM-NC)
CN03 This is connector which is connected with oven sensor .
CN04
This is to stop operating self-cleaning and steam mode if hot indicator lamp on cooktop is lighted with
being supplied with AC120V(L1, N) .
CN05 This is consisted of 15 pin and take a role of getting a cable on keypad to connect with touch PCB .
CN06 This is connector which have door lock motor, and relay of oven lamp connected .
Ry-source relay(Ry01) Circuit is designed to all relay worked after Ry-source ralay is being worked . (For safety)
DLB relay(Ry02) Circuit is designed to have broil relay or worked after DLB relay is being worked by Double line break .
Broil relay(Ry03),
Bake relay(Ry04)
Broil relay(Ry03), Bake relay(Ry04), will be on-off working by micom signal after DLB relay is worked .
(Broil relay : It will not be problem with reversing the order in insering Black and Brown)
(Bake relay : It will not be problem with reversing the order in insering Yellow and Gray)
ZNR1 This is the element to protect main PCB, if over voltage is supplied with PCB .
IC02 This is to supply DC12V with main PCB by voltage regulator .
IC03 This is to supply DC5V with main PCB by voltage regulator .
W/Drawer Relay(Ry06)
and T02
This is terminal to connect harness with relay to get heater on warming drawer work (some model)