LG LRGL5821S Service Manual page 61

CHECKING FLOW CHART BY FAILURE
Oven lamp does not operate
Check the oven lamp (measure the resistance)
Normal:approximately 20~40Ω, Abnormal : infinite
NO
COM
Normal?
Yes
Replace the Main PCB
END
No
10-17
Abnormal
Infinite
Replace the oven lamp
END
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