Samsung RB215BSSB Service Manual page 73

* Turn on Power and check status of Relay &Driving Circuit by checking followings according to load operation .
3-CONTACT 3-CONTACT
NO
C
NC
COIL TERMINAL
TEIGER
COIL
TERMINAL
OPERATION RELAY TERMINALS
K70
R,F DEFROST &
K71
COMP OFF
K72
K70
COMP ON
K71
K72
K71
R DEFROST ON
K72
K70
F DEFROST ON
K72
SSR71
F FAN ON R FAN
SSR72
ON C FAN ON
K74
ICE WATER
K76
VALVE ON R
K75
LAMP ON
K73
F LAMP ON
※ Room (F,R)Lamp
1. Open the F-Room door and see if its room lamp lights up.
2. Press the DOOR S/W and see if the F-Room lamp turns off.
3. Close the F-Room door and carry out the same for the R-Room.
4. When there is problem,check the room lamps and the door switches.
(Refer to 4-5.DOOR S/W SENSING CIRCUIT)
5. Check the wire connection.
PCB
CN70
CN71
Measure after
separating
VALUE
SUPPLY
CN70 ⑪-⑬
VOLTAGE (SV)
CN70 ⑪-⑨
SV
CN70 ⑤-③
SV
CN70 ⑪-⑬
5~30V
CN70 ⑪-⑨
5~30V
CN70 ⑤-③
0V
CN70 ⑪-⑬
0V
CN70 ⑪-⑨
SV
CN70 ⑤-③
0V
CN71 ⑬-⑨
SV
CN71 ⑪-CN70 ③
0V
CN71 ③-CN70 ③
0V
CN71 ⑨-CN70 ③
0V
CN71 ①-CN70 ③
0V
CN70 ①-③
0V
CN71 ⑦-CN70 ③
0V
Note) NC →NORMAL CLOSE
(C-TERMINAL & ON-TERMINAL)
NO →NORMAL OPEN
(C-TERMINAL & OPEN-TERMINAL)
C →COMMON TERMINAL
WHEN IT IS DIFFERENT FROM MEASURED VALUE
K70 CONTACT SHORT,FAULTY DRIVING CIRCUIT
K71 CONTACT SHORT,FAULTY DRIVING CIRCUIT
K72 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT
FAULTY K70 OR K72 NC CONTACT SHORT,FAULTY DRIVING CIRCUIT
FAULTY K71 OR K72 NC CONTACT SHORT,FAULTY DRIVING CIRCUIT
K72 NO CONTACT OPEN,FAULTY DRIVING CIRCUIT
FAULTY K71,K72 NC CONTACT OPEN,FAULTY DRIVING CIRCUIT
K72 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT
K70 CONTACT SHORT,FAULTY DRIVING CIRCUIT
K72 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT
SSR71 OPEN,FAULTY DRIVING CIRCUIT
SSR72 OPEN,FAULTY DRIVING CIRCUIT
K74 NO CONTACT OPEN,,FAULTY DRIVING CIRCUIT
K76 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT
K75 NO CONTACT OPEN,FAULTY DRIVING CIRCUIT(DOOR SWITCH)
K73 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT(DOOR SWITCH)
73