Cf2(Ih Lr Top Sensor Error) Open / Short - LG LSE4617ST Service Manual

CHECKING FLOW CHART BY FAILURE
Symptom
CF2(IH LR Top Sensor Error)
Open / Short
1. OPEN
Is the CN92 disconnected or
loose Connection?
1. Sensor
Is the R921
disconnected?
Replace The PCB
1. Check the Top Sensor Connect
2. Check The Top Sensor Resistance.
Reconnect
Yes
or adjust the
connection
No
No
Check Point
2. SHORT
Is the CN92 normal?
Measure the resistance
Normal : infinite
Abnormal : shorted
Is the resistance of
R921 normal?
Normal- approximately 1 kΩ
Replace The PCB
9-23
No
Replace
The PCB
Yes
No