Samsung RT40MA Service Manual page 38

8-2 Diagnosing the main components
Components
• Use the tester to measure
Compressor
• Use the tester to measure
P.T.C Relay
• Use the tester to measure
Condenser
• Use the tester to measure
Overload
protector
• Use the tester to measure
Fan-motor
• Use the tester to measure
Door switch
• Use the tester to measure
Defrost heater
Diagnosing methods and criteria
the resistance.
– Bring the component to cool down
completely before measuring.
the resistance.
– Bring the component to cool down
completely before measuring.
the resistance.
– Bring the component to cool down
completely before measuring.
the resistance.
– Bring the component to cool down
completely before measuring.
the resistance.
the resistance.
C.
No.
Nc.
( Seperating measure)
the resistance.
– Bring the component to cool down
completely before measuring.
Normal
Measuring point
Approx 10 ~ 500kΩ
Primary iwre
3 ~ 20Ω
Secondary wire
Normal
Approx ∞Ω ~ kΩ
Normal
Approx 10Ω ~ 80kΩ
Normal
0Ω
Normal
Approx 100Ω ~ 20kΩ
Measuring point Normal
A B contact point
Approx200MΩ
When the switch is
on by the contact
Normal
40Ω ~200Ω
37
Location
Abnormal
Mechanical
0Ω and
compartment
∞Ω
Abnormal
Mechanical
0Ω and ∞Ω
compartment
Abnormal
Electrical
0Ω and ∞Ω
equipment box
Abnormal
Mechanical
∞Ω
compartment
Mechanical
Abnormal
compartment
0Ω and ∞Ω
Freezing
compartment
Abnormal
Between the
∞MΩ
upper and the
lower doors
and∞Ω
Abnormal
∞ MΩ ~ ∞Ω
EVAP