LG LSWS306ST Service Manual page 46

DIAGNOSIS THROUGH SCHEMATIC
LSWS307ST
LSWS300BD
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
FAN
BL
LOW
BN
CONV.
BK
5
FAN
GY
7
8
RD WH
DOOR
9
MOTOR
BK
VI
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
2 RY2
BLOWER
3
LOW
4
RY3
6
CONV. FAN
RY4
DOOR
MOTOR
CN02
1
RY5
2 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
6-4
WH
RD
Symptom : Oven lamp not
operating
-. Check the Lamp coil's
resistance