Samsung SG626, SG628, BG626, BG678, SG676 Reference Information
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Reference
Reference1
Reference2
NO
C
NC
Coil bisection
The connection of DOOR-CABI
BLK
1
2
BRN
3
MAIN
PCB
RED
4
ORG
5
YEL
6
PNK
7
BLU
8
PUR
9 9 9
GRY
10
WHT
11
S/BLU
CON7
Inspection of Relay
Coil bisection
Measure after
separation
(Relay Movement)
CON9
CON10
MAIN PCB
CON8
10
11
12
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
10
11
12
10
11
1
2
3
4
5
6
7
8
9
BLK
BRN
RED
ORG
YEL
PNK
BLU
PUR
GRY
WHT
S/BLU
PANEL
PCB
* First separate the housing connected to the
main PCB CON C8, 09, 10 and measure the
following items.
1. M e a s u re the coil bisection of the relay and
check whether it works.
2. Measure the apex bisection for open circuit.
Apex category The voltage of
coil bisection
DC 12V(Operation)
Apex 3
DC 05V(Standstill)
Apex 2
DC 12V(Operation)
DC 0V(Standstill)
Judging the apex
bisection
C:NO SHORT
C:NC OPEN
C:NO OPEN
C:NC SHORT
SHORT
OPEN
Note) C →Common, NO → Normal open, NC → Normal close
3. When it operates as above, it is normal and
when it does not operate, report the
corresponding relay.
36 Samsung Electronics
Reference3
Short
Check for malfunctioning of the subordinate
Measure after separation
* Cut off the power code, separate the housing
from the main PCB CON 08, 09, 10 and
measure the following.
CON9
R-Defrost heater
SWINT MOTOR
R-C/FAN
RED
Note) The compressor is impossible to measure resistance by the
running and starting condenser.
Reference4
R-Lamp
F-Lamp
F-C/FAN
COMP.
Inspection of the sensor
R2 ROOM
R1 ROOM
F - ROOM
R / DEF - SONSOR
F / DEF - SONSOR
RED
8
7
5
3
1
CON10
9
7
5
4
3
2
1
CON3
1
2
3
4
5
6
Measure after separation
CON2
4
3
2
1
MAIN PCB
1
2
3
CON3
4
5
6
CON9
CON10
1. Measure resistance between the terminals and
check for malfunctioning of L/W.
Subordinate
R Defrost heater
F Defrost heater
Comp
Swing motor
R-Circulation fan
F-Circulation fan
R-Lamp
F-Lamp
M e a s u r e m e n t
t e r m i n a l
CON9 ⑨& CON10
CON8 ③& CON10
CON8 ⑤& CON10
CON8 ①& CON9
CON8 ①& CON9
CON8 ①& CON10
CON8 ①& CON9
CON8 ①& CON10
Evaluation of mea-
surement result
③
0Ω or ∞Ω(defect)
③
Impossible to measure 0Ω indicator
⑤
0Ω or ∞Ω(defect)
⑤
③
⑦
①
⑨
* Separate the housing connected to main PCB
CON2 and CON3.
* Resistance value lowers while temperature
rises, because it is a NTC type sensor.
1. R1 sensor measures resistance of CON2
between ①~②.
2. R2 sensor measures resistance of CON2
between ③~④.
3. Freezer sensor measures resistance of CON3
between ①~②.
4. R-defrost sensor measures resistance of CON3 between ③~④.
5. F-defrost sensor measures resistance CON3 between ⑤~⑥.
6. The measurement value above is calculated by comparing th e present temperature of the sensor and
the temperecture table in specification found in the manual.
Samsung Electronics 37
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