LG LMHM2237BD Service Manual page 31

COMPONENTS
CAPACITOR
DIODE
Some inexpensive ohm
meters may indicate infinite
resistance in both directions.
RELAY 2
VENTILATION 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 lead wires.
2. Measure resistance. (ohm meter scale: Rx1)
Turbo speed : White and Brown
High speed: White and Blue
Low speed: White and Violet
Slow speed: white and Yellow
-31-
RESULTS
Normal:
Momentarily Infinite and
then soon reach 10 mega.
ohms
Normal: Infinite.
Normal: Below 100 ohms
Abnormal:Infinite
Normal:Infinite.
Abnormal: Below 100 ohms
Power
Open Close
Level
1 4 Sec 18 Sec
2 16 Sec
6 Sec
3
8 Sec 14 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 20 Sec 2 Sec
10 0 Sec
22 Sec
Normal:
Turbo speed: Approximately
20~25ohms
High speed: Approximately
40~45ohms
Low speed: Approximately
50~55ohms
Slow speed: Approximately
60~65ohms