Samsung SR-686EV - 9. Failure diagnosis and repairment; Main PCB check

20 Samsung Electronics
9. Failure diagnosis and repairment
CONTROL BOX
Room TEMP-Sensor
F Sensor
R1 Sensor
R2 Sensor
Refrigerator
Freezer
F Defro. Sensor
R Defro. Sensor
• Turn the power off and on again for self diagnosis check.
• Refer to belows for error code table
♦ Error code table
Main PCB check
Item
Refrigerator
Freezer
Display “LOW”
R1 sensor
Room Temp s e n s o r
“LOW.Mid”
R2 sensor
F sensor
“Mid”
R Defro. s e n s o r
F Defro. sensor
“ M i d . H I G H ”
–
–
“LOW”
Swing fan motor
–
♦ Table for Vf and Rth according to temperature
T(˚C)
-35
-34
-33
-32
-31
-30
-29
-28
-27
-26
-25
-24
-23
-22
-21
-20
-19
R(ohm)
68648
65011
61595
58384
55366
52526
49854
47337
44967
42733
40626
38640
36765
34995
33323
31743
30250
V(v)
4.364
4.333
4.301
4.268
4.235
4.200
4.164
4.127
4.090
4.051
4.012
3.972
3.930
3.888
3.845
3.802
3.757
T(˚C)
-18
-17
-16
-15
-14
-13
-12
-11
-10
-9
-8
-7
-6
-5
-4
-3
-2
R(ohm)
28838
27502
26237
25040
23906
22832
21814
20848
19932
19062
18237
17453
16709
16001
15328
14688
14080
V(v)
3.712
3.666
3.620
3.573
3.525
3.477
3.428
3.379
3.329
3.279
3.229
3.178
3.127
3.076
3.025
2.974
2.923
T(˚C)
-1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R(ohm)
14051
12949
12424
11924
11447
10993
10559
10146
9752
9375
9016
8673
8345
8032
7732
7446
7172
V(v)
2.872
2.821
2.770
2.719
2.668
2.618
2.567
2.518
2.468
2.419
2.370
2.322
2.274
2.227
2.180
2.134
2.088
T(˚C)
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
R(ohm)
6910
6659
6420
6190
5970
5759
5557
5363
5178
5000
4829
4665
4508
4357
4212
V(v)
2.043
1.998
1.954
1.911
1.869
1.828
1.786
1.745
1.705
1.666
1.628
1.590
1.553
1.517
1.481