Samsung SR-42 Service Manual page 13

10-5 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 relay
• Use the tester to measure
Circuit-motor
&
Fan-motor
• Use the tester to measure
Rotating blade
geared-motor
• Use the tester to measure
Door switch
• Use the tester to measure
Defrost timer
• Use the tester to measure
Defrost heater
Bimetal
• Use the tester to measure
Temperature
fuse
14
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.
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.
the resistance.
– Bring the component to cool down
completely before measuring.
the resistance.
Normal
Measuring point
Approx 10 ~ 500kΩ
Primary iwre
3 ~ 20Ω
Secondary wire
Abnormal
Normal
0Ω and ∞Ω
Approx ∞Ω ~ kΩ
Normal
0Ω and ∞Ω
Approx 10Ω ~ 80kΩ
Abnormal
Normal
0Ω and ∞Ω
Approx 200kΩ
Abnormal
Normal
0Ω and ∞Ω
Approx 100Ω ~ 20kΩ
Abnormal
Normal
0Ω and ∞Ω
Approx 10Ω ~ 20kΩ
Measuring point Normal
A B contact point
Approx 200MΩ
When the switch is
on by the contact
Normal
Measuring point
Between terminals Approx 200KΩ
Approx 10Ω~300KΩ
Temperature fuse terminal
Abnormal
Normal
∞ MΩ ~ ∞Ω
Approx 3KΩ ~ 6KΩ
Normal
Measuring point
Bimetal terminal
Approx 200MΩ
Temperature fuse
terminal
Location
Abnormal
Mechanical
0Ω and
compartment
∞Ω
Mechanical
compartment
Abnormal
Electrical
equipment box
Mechanical
compartment
Mechanical
compartment
Freezing
compartment
Refrigerating
compartment
Abnormal
Between the
∞MΩ and upper and the
∞Ω lower doors
Abnormal
Electrical
0Ω and
equipment box
∞Ω
Lower EVAP
Abnormal
EVAP
∞Ω ~ ∞Ω
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