Samsung SG626, SG628, BG626, BG678, SG676 PCB Diagram
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10. PCB Circuit Diagram
HALL IC
Vcc
OUTPUT
G
R / DEF - SONSOR
F / DEF - SONSOR
THERMISTOR
THERMISTOR
F-ROOM
THERMISTOR
R1-ROOM
R2-ROOM
R-DOOR S/W
F-DOOR S/W
COMP COOL FAN
F -
(F-C/FAN)
(R-C/FAN)
SWING MOTOR
R -
SET
L V T
5
7
7
5
RY07
RY08
17
18
2
1
K
(F CIRCLE-FAN)
(COMP)
23
24
P16
P17
P72
P71
P70
12345
C11
4.7K
R10
11
14
8
ZD1
GRID #1
R05
4.7K
R04
11
7
8
11 11
8 8
7 7
KEY INPUT
C
C-N N N-W W
1N4148
S/W05
9
9
15
GRID #2
1N4148
S/W04
CON10
RY06
16
3
(F-LAMP)
22
P15
P73
6
6 6
C
C-N N N-W W
*
POWER
16
GRID #3
1N4148
1
1
P14
*
S/W03
RY05
15
4
(R-LAMP)
21
P74
218345
17
GRID #4
5
5 5
1N4148
POWER
3
3
RY04
13
6
(R CIRCLE-FAN)
19
P12
P75
6
1
UDN2981A
GRID #5
1
1
1
X4
X3
X6X5
1N4148
S/W01
S/W02
5
5
RY03
12
7
SWING MOTOR
18
P11
X1 X2
CON3
1
1
4
2
5
3
6
2
345
6
Vcc
10K(F)
10K(F)
"A"
10K
104
C16
P67(AIN7)
R26
Vcc
10K(F)
R23
10K
10K
R18
R17
R20
104
104
104
C15
C14
61
58
63
P45-47
46-485432
VASS
TEST
VSS
P62(AIN2)
P60
P40
P43
2644415625
P65(AIN5)
P20
47K X 8
R33 - 40
9
10
9
3
2
1
1
2
3
Vcc
Vcc
Vcc
10K(F)
10K(F)
R27
R24
R25
10K
10K
10K
R31
R19
104
104
C10
C09
C17
59
62
P63(AIN3)
P66(AIN6)
P35
P36
P37
P22
40393837363534335352515049
56
57
58
46
47
48
36
37
38
26
27
28
16
17
18
1
2345678
181716
1514131211
2
345
678
1
4
6
5
7
4
5
6
7
C11
223
Vcc
10K(F)
R28
6.8K
R48
R49
1K
6.8K
Vcc
Q02
KSC1008
R30
1K
R46
104
C08
43
60
P42
P64(AIN4)
P33
P34
P32
53
54
55
44
45
33
34
35
23
24
132514
15
SCHEMATIC DIAGRAM
ULN2803
1 2 9 10
SCHEMATIC DIAGRAM
UDN2981A
CON2
YEL
Vcc
104
R47
3K
104
P31
52
42 32 221243
N-8
3
3
10K
R22
C18
6
13
4.7K
R06
R07
C22
8
P77
P30
51
41 31 21 11
RC-NETWORK
CON6
1
2
1
2
(DC12V)
V12
10K
R21
C19
104
7
12
4.7K
R08
3K
R09
104
C21
7
P76
P52
P53
P54
R12-16 1K X 5
CON8
1
1
3
5
1
1
5
3
(DC12V)
V12
IC06
10K
R02
104
C25
TMP87C840
P51
1
CON4
BLU
TEST JIG
17
2
(F-DEF-HET)
15
P06
Vcc
104
TEST S/W
RY09
C12
1 K
4.7K
SW1
S/W06
SQ-1201
104
K
K
P61
P44
45
57
10K
R41
OP00
IC05
R32
R29
V12
Vcc
CON5
SPK1-4
(DC12V)
+12
C27
10
ULN2803
Vcc GND
IC07
9
AC1
P10
Vcc
10
GND VCC
9
"A"
EXT-ROOM
221
WIRE TO WIRE
THERMISTOR
EXT-ROOM
3
3
17
3K
UZ5.1B
3K
THERMISTOR
101112131415161718
9
7
9
7
RY02
11
8
R03
10K
C24
104
RCINETWRO
(COMP-COOL FAN)
16
P07
P00
910111213
GND VCC
ULN2803
IC06
C23
104
+12
2
2 2
CON9
RED
RY01
(DC12V)
+12
18
IC06
1
(R-DEF-HET)
P21(XTIN)
P05
P01
UDN2981A
679
131210
UDN2981A
3
3 3
7
223
35V
470uF
25V
P22(XTOUT)
P02
5
14
4
4 4
C06
1000uF
282714
104
C07
IC01
C04
10K
C26
7
+
(MC7812C)
+
MN1280N
R01
29
RESET
P03
4
15
9
9 9
5
7812
Vcc
IC08
5
1N4004 X 4
(DC12V)
30P
Xout
P04
3 16
10
10 10
3
BD01-04
HEAT-SINK
V12
X-TAL
31
CON7
3
223
35V
25V
25V
Xin
P41
KSR1005
C29
1
C05
1000uF
2200uF
470uF
30P
30
42
Q01
4.7
25V
R42
33UF
4.7K
250V 0.5A
FUSE2
+ +
C03
IC02
C02
IC03
+
C01
104
55
VAREF
R45
1
(MC7812C)
7812
(MC7805AC)
7805
(DC5V)
C13
64
Vdd
P13
20
14 5
D09
1N4004
CON1
1N4004 X4
104
Vcc
Vcc
12K
BDO5-08
HEAT-SLNK
HEAT-SINK
C28
(DC12V)
+12
MAIN PANEL
IC1
IC07
V12
R44
KSR1005
Q03
BUZZER
COIL
4.7K
R43
V12
64 Samsung Electronics
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