Test 4 Moisture Sensor - LG DLE4870 Series Service Manual

Test 4
Test 4
Moisture Sensor
Moisture sensor
Caution
Trouble Symptom
Measurement Condition
Take NA6 Connector from
the Controller.
Metal or Wire
Damping cloth
■ Table 2. IMC Ratio and Display Value / Voltage (IMC: Initial Moisture Content)
IMC
70% ~ 40%
40% ~ 20%
10% ~ Dried clothes
Before measuring resistance, be sure to turn power off, and do voltage discharge.
(When discharging, contact the metal plug of power cord with ground line.)
Degree of dryness does not match with dry Level.
Turn the dryer's power off, then measure resistance.
Short with metal to the 6 pin connector's
Pin (Orange Wire) and Pin
When measuring resistance in electric load,
is resistance below 1Ω
When contacting cloth to electro load:
1.Is the measurement within the range of Table 2
during Diagnostic Test?
2.Is the measurement within the range of Table 2
when measuring the voltage in the NA6 connector's
(Orange wire) and Pin
Pin
Normal Condition
Display Value Voltage (DC) (between NA6 terminal , )
50 ~ 130
130 ~ 20
205 ~ 240
(Blue Wire) to controller.
?
YES
(Blue wire)?
YES
2.5V
2.0V ~ 4.0V
Over 4.0V
27
• Check electro Load
and harness
NO connector
• Check harness-
linking connector.
• Replace control
NO
and check.
Remark
Weight after removing from
washing machine
Damp dry
Completely-dried clothes