LG LSWS306ST Service Manual page 45

DIAGNOSIS THROUGH SCHEMATIC
LSWS306ST
LSWS309BD
Basic Check Summary
Symptom : Oven hot(F6)
-. Check: All heater relays are
open/shorted
BK
Symptom : no heating(F9)
RD
-. Check : All heater relays and
DLB relay are openv
PRI. SEC.
RD
WH
OVEN LAMP
TRANSFORMER
Symptom :
Door lock fail (F10)
-. Check : relative part
YL
HI
RD
BLOWER
2
FAN
BL
3
LOW
4
BN
CONV.
BK
5
FAN
6
GY
7
8
RD WH
DOOR
9
MOTOR
BK
VI
1
2
OR
BK
OVEN
LAMP
BK
OR
OVEN
LAMP
BK OR
OVEN
LAMP
RD
BL
BAKE HEATER
BN
CONV. HEATER
PK
BROIL INNER
OR
BROIL OUTER
BK BK
BROIL HEATER
Thermostat
(25A , 180˚C)
VI
BN
YL
AC INPUT
L2 N
L1
Relay P.C.B.
RY1
CN01
BLOWER HI
1
RY2
BLOWER
LOW
RY3
CONV. FAN
RY4
DOOR
MOTOR
CN02
RY5
OVEN
LAMP
3
RY11
BAKE
RY12
CONV.
RY13
BROIL
INNER
RY14
BROIL
OUTER
RY19
DOUBLE LINE
BREAK RELAY
Symptom : Sensor error or
no heating (F1,F2,F9)
-. . Check : Sensor resistance
6-3
WH
RD
Symptom : Oven lamp not
operating
-. Check the Lamp coil's
resistance