LG LRBP1031W User Guide - Page 20

4) LOAD/BUZZER OPERATION, DOOR OPENING SENSING CIRCUIT (1) LOAD OPERATION CHECK CON1 i{ ) RY1 _ ] IC4 D6 F ] OLP IN4_4 11 6 1 CONP COOLING FAN FAN MOTOR FUSE M DEFROSTING HEATER D8 I I LJ KIND OF LOAD MEASURING POINT (IC5) ON STATE OFF COMP, COMP COOLING FAN No.13 FAN MOTOR No.14 below 1V 12V DEFROSTING HEATER No.15 /df the DOOR-R is opened during FAN MOTOR is operated, FAN MOTOR is stopped immediately. foThe (_, (_ of DOOR SlW-R is connected DOOR OPEN DETECTION CIRCUIT as follow. fdf the DOOR-R is opened or closed, then the DOOR SIW-R is ONIOFF, and the LAMP-R is ON/OFF, and at the same time, SAN of the @, (_ of DOOR StW-R for detection of DOOR-R open is ONIOFR (2) DOOR OPENING PERCEPTION CHECK CON3 _E *NOTICE: If you would change DOOR S/W-R, must use the componenot of right PART NUMBER, Because there is a similar type DOOR StW-R of NOT MICOM MODEL, it's logic of the (_, (_ of DOOR StW-R is reversed. _MEASURING REFRIGERATDO_R POINT NO.6 OF IC 1 (MICOM) CLOSE 5V(S/W of (_), (_) is OFF state) OPEN 0V(StW of (_), (_ is ON state) fLEven though LAMP-R is operated a normal ON/OFF according to DOOR S/W-R, but the MICOM couldn't detect a DOOR-R opened or closed of lead wire of the _}, (_ is abnormal or SAN of the (_, (_ of DOOR StW-R is abnormal. fcVVhen DOOR-R open isn't detected : Even though DOOR-R is opened, FAN MOTOR couldn't stop. When DOOR-R close isn't detected : Even though DOOR-R is closed, BUZZER sounds a DOOR OPEN ALARM. check a lead wire of the (_, _) and DOOR S/VWR. - 22 -