LG LMV2053ST Service Manual page 27

COMPONENTS
CAPACITOR
DIODE
Some inexpensive ohm
meters may indicate infinite
resistance in both directions.
RELAY 7
FAN MOTOR
TEST
1. Remove wire leads.
2. Measure resistance. (ohm meter scale: Rx1000)
• Terminal to terminal
• Terminal to case
1. Measure continuity. Forward.
(ohm meter scale: Rx1000)
2. Measure continuity. Reverse.
(ohm meter scale: Rx1000)
1. Measure continuity.
(ohm meter scale: Rx1)
2. Remove the lead wires and operate oven at
power level 1 through power level 10.
1. Remove wire leads.
2. Measure resistance.
(ohm meter scale: Rx1)
7-16
A
B
C
RESULTS
Normal:
Momentarily indicates
several ohms, and then
gradually returns to infinite
Normal: Infinite.
Normal: Continuity.
Abnormal: Infinite.
Normal: Infinite.
Abnormal: Continuity.
Power
Open Close
Level
1
4 Sec 18 Sec
2 16 Sec
6 Sec
3 14 Sec
8 Sec
4 10 Sec 12 Sec
5
12 Sec 10 Sec
6 8 Sec
14 Sec
7 16 Sec 6 Sec
8
18 Sec 4 Sec
9 2 Sec
20 Sec
10 22 Sec 0 Sec
Normal: Approximately
Terminal : 35 to 50 ohms
A C
Terminal : 5 to 15 ohms
A B
Abnormal:
Infinite or several.