LG LFXS30796 Series - Page 75

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CON7
CN1
CON201
CON2
CON1
CON3
CON5
CON6
CON203
CON10
CON10
Symptom Check Point
1. Knock on Door lamp
doesn’t work
1. Check for a loose connection
1. Check the Home Bar door S/W resistance
2. Check the PCBA
3. Check the Knock on sensor
4. Check the Knock on Door LED Lamp
LED Lamp
Knock on sensor
Home Bar Door S/W
Resistance [Ω]
Door S/W
Normal 0
Push S/W Infinity
Voltage [V]
CON10
2
th
pin ~ 3
th
pin
11.4 ~ 12.6V
CON10
4
th
pin ~ 6
th
pin
4.75 ~ 5.25V
Knock on sensor Voltage [V]
Yellow ~ Black
Knock off 4.75~ 5.25V
Knock on 0 ~ 2V
LED Lamp Voltage [V]
White ~ Yellow
Knock off 0~2V
Knock on 11.4 ~ 12.6V
8-21. Knock on door lamp doesn’t work