Test Procedure - LG LTM9020W Service Manual

COMPONENTS
RELAY 2
(Power Relay)
FAN MOTOR
TURNTABLE
MOTOR
NOTE : • A MICROWAVE LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR ANY
REASON.
• MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION.
• WHEN REMOVING THE WIRE LEADS FROM THE PARTS, BE SURE TO GRASP THE CONNECTOR, NOT THE
WIRES.

TEST PROCEDURE

1. Measure continuity.
2. Remove the lead wires and operate oven
at power level 1 through power level 10.
1. Remove wire leads.
2. Measure resistance.
1. Remove wire leads.
2. Measure resistance.
-22-
RESULTS
POWER
0
LEVEL
1 4 sec
2 6 sec
3 8 sec
4 10 sec
5 12 sec
6 14 sec
7 16 sec
8 18 sec
9 20 sec
10 22 sec
Normal:
A:Approximately
95~120 ohms.
B:Approximately
10~25 ohms.
Abnormal:
Infinite
Normal: Approx.2.5~3.5 Kohms
Abnormal: Infinite or several
ohm.
0.L
18 sec
16 sec
14 sec
12 sec
10 sec
8 sec
6 sec
4 sec
2 sec
0 sec