LG MS1949G, Service Manual

Page: 20 / 35

5-10
COMPONENTS TEST PROCEDURE RESULTS
1 3 5
Relay 2
Relay 1
FUSE
THERMAL
CUT-OUT
Disconnect the 7 pin
connector from P.C.B.
(Refer to schemetic diagram)
RELAY 2 OF P.C.B.
(Wire leads removed.)
Note: Relay
Relay 1: Fan motor
Turntable motor
Oven lamp
Relay 2: Microwave
Check for continuity of the fuse with an
multi-meter.
NOTE: If the fuse is blown, check the primary, the secondary, and the monitor switches,
H.V.D. and H.V.C. before replacing the fuse.
If the fuse is blown by improper switch operation replace the defective switch and the
fuse at the same time. Replace just the fuse if the switches operate normally.
Check for P.C.B. connector.
Normal Abnormal
0°C~Approx.110°C Approx.110°C
Cooking Start OFF
Cooking Start OFF
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