LG LMHM2017ST - MICROWAVE POWER LEVEL GUIDE; High Power Levels (10-7); Medium Power Levels (6-3); Low Power Levels (2-1)

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6-3. Basic Check Summary
120 V Ac
BK-L
WH-N
Symptom : Dead
Check : Open/Short
120V Ac
BK-CN1-3
WH-CN1-5
Symptom: Dead
Check : Open/Short
(It is normally recovered
if the set is cooled down)
Symptom: Dead
Check :Open/Short
Symptom #1(Door is closed): No
cook, Operate F.M, S.M, T.T.M.
automatically
Check: Open/Short when the door
is closed. (Switch)
Symptom #2(Door is open):
Not operate F.M, S.M, T.T.M.
Check: Open/Short when the door
is open. (Switch)
Symptom #1(Door is closed): No
key, Not start, Operating O.L, F.M,
S.M, T.T.M.
Check: Open/Short when the door
is closed. (Switch)
Symptom #2(Door is open): Not
turn on O.L
Check: Open/Short when the door
is open. (Switch)