Mitsubishi MR-385R-ST-A(NZ) - 6.2 How to Check P.C Boards

Fan grill of the
freezer compartment.
Measure the resistance with a tester.
(Ambient temperature:Room temperature 15
o
C ~ 25
o
C)
In the drip tray under
the evaporator of the
freezer compartment
Measure the resistance with a tester.
(Ambient temperature:Room temperature 15
o
C ~ 25
o
C)
Resistance measured under Defrost thermistors
the ambient temperature from Thermistor resistance radiator
-50: to +50:
(kΩ)
against temperature of the freezer
compartment.
1. 200" to 500k" F-thermistor, control
............normal
panel of the refrigerator
2. Out of the above range
compartment.
............abnormal
Thermistor Check Procedure
Thermistor resistance will vary
with the change of temperature.
(
o
C)
Take the temperature around the thermistor, Temperature
and then measure resistance using a tester.
The relation of resistance and temperature is as shown on the above graph.
- 15 -
Short (0Ω)
Rated input 150 W
operation method
Power ON after defrosting
(14 +
1.5
o
C or more)
10
Thermistor
30
Opened
( ∞ Ω )
Defrost
Heater
Abnormal (faulty)Normal
384
Ω
(Approx.)
-20 -10 0 20
abnormal(faulty)
Refrigerator
fan motor
560+ 10% ( Ω )
UDVH15MA1H
Model
Normal
Check Method and Criterion
Parts Mounted Position
Components/
Part Name
5
10
15
20
25
30
Resistance