Samsung FER710DRS Service Manual page 40

4. Troubleshooting
Explain of primary parts of Main PCB
(Main PCB)
CN201
CN501
Explatin of the function of primary parts.
CN101
CN201
CN202
CN301
CN401
CN501
CN502
RY-Source Relay(RY501)
DLB Relay(RY502)
Broil Relay(RY503),
Bake Relay(RY504),
Relay(RY505)
IC102
CN202
CN301 CN401
CN502
This is to supply power with SMPS.
This is connector which is connected with Sub PCB to communicate.
When do micom revision, connect to micom writer.
And this connector which is connected with Touch PCB to communicate.
This connector which is connected with oven sensor.
This is connector which is connected with Door plunger switch and Door lock
switch, partition switch.
This connector which have Door plunger switch, upper lamp and
relay of upper convection fan connected.
This connector which have lower lamp and relay of lower convection fan
connected.
Circuit is designed to have broil relay or convection relay worked after DLB relay
is being worked by Double line break. (It will not be problem with reversing the
order in inserting Red)
Broil relay(Ry503), Bake relay(Ry504), convection relay(Ry505) will be on-off
working by mi-com signal after DLB relay is worked.
(Broil relay : It will not be problem with reversing the order in inserting Brown)
(Bake relay : It will not be problem with reversing the order in inserting Blue)
This is to supply DC 12V with main PCB by voltage regulator.
40
IC102
RY502 RY503 RY504
CN101