Component Testing Information - LG LMX25984ST/01 Service Manual

11. COMPONENT TESTING INFORMATION

11-1 Defrost Controller Assembly
Function - Controller assembly is consist of 2 kinds of part those are fuse-m and sensor. we can
decide part is defect or not when we check the resistance.
- Fuse-M can cut off the source when defrost heater operate the unusual high temperature.
- Sensor give temperature information to Micom
How to
Measure
(Fuse-M)
How to
Measure
(Sensor)
Standard
(1) to (2)
(1) to (2)
Fuse-M (at all temperature)
Test Point Ressult
(1) to (2) 0 ~ 0.1
Measure the 2 pin connected to Fuse-M.
If the ohmmeter indicate below 0.1ohm
Fuse-M is good. If Fuse-M measures infinite
ohms, it is open and needs to be replaced.
Measure the 2 pin connected to Sensor.
If the ohmmeter indicate 11
temperature) It is normal.
Checking the resistance at other
temperatures, check the sensor resistance
chart.
Sensor (at room temperature)
Test Point
(1) to (2)
- 49 -
(at room
Ressult
11