LG LSWS306ST Service Manual page 65

3
Is the DLB relay normal?
Measure the resistance
Normal: infinite
Abnormal : shorted
Tab on Relay : RY19
Yes
TROUBLESHOOTING
Replace the Relay
No
PCB
DLB Relay
7-19
Plug in the unit
4
Is the value of thermistor
normal? (Refer below)
Check with the test mode
To enter the test mode, follow
these steps:
(1) press the any button
(2) press the OVEN LIGHT and turn right Lower
Time & Temp Encoder at the same time
(3) press the OVEN LIGHT and turn right Lower
Time & Temp Encoder again.
(4) press the COOK TIME button
Normal: Thermistor value at room temp is from
70℉ to 90℉
No Replace the Main
PCB
Current temp