Schematic Diagram; Main Control - Samsung DV448AEP Service Manual

8. SCHEMATIC DIAGRAM

8-1. MAIN CONTROL

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OPTION
AC2
CN1
1
2
SW_COM
3
SW_NC
90019WS-03
BLK
SENSING & LOAD CONTROL
R69 R60
SW_COM
1 2 1 2
51K J 2W 51K J 2W
D5
AC2 2 1
1N4007
1A 1KV
R61
SW_NC
1 2
51K J 2W
D4
AC2 2 1
1N4007
1A 1KV
R63
1 2
51K J 2W
D3
2 1
1N4007
1A 1KV
PCF-112D2M-B
3
4
RY5
RY4
AC2
1
2
PCJ-112D3MH
RY3
1
2
PCJ-112D3MH
CN5
1 6 RY2
1
2 5
3 4
SMW420-06
NTR
2
PCJ-112D3MH
T9AS1D22-12
AC2
AC2
2
1
RY7
G4A-1A-E
3
4
RY6
DRY SENSING & THERMISTOR
R46
2 1
0.25W J 2.2M
GND
CN4
5V
1
GND
2
3
4
5
6
R68
7 1 2
1K J 0.125W HEAT_TH2
1
WHT
CE12
R67 10uF
10K,F,0.125W 50V 10K,F,0.125W
5V
OPTION
2
GND
POWER
3
L1 1A
1 1 600V
C1 1 4 C34
DF06S
100nF 220nF
2 3
275V *
4 1
BD1
2 CV415200SH 2 PTC1 2 1 1
19mH
AGND CE2 CE1
2A
1 2
500V,10uF 500V,10uF
COM_1 27ohm
2 450V 10uF 2
1.5A
AGND AGND
5V 5V
2
0.2W
R71
G
RN2427 5
Q2
1 2
1 I 6
4.7K J 0.1W
O
R36 7
DOOR_CHECK
3
1 2 8
PC4
100 J 0.1W
1 4
3
C
2 B
Q7
KRC246S AGND
2 3
0.2W
E
PS2561AL
200-400%
5V
1
GND
PC2 R35
1 4 AC ON CHECK
MT_SW_CHECK
1 2
100 J 0.1W
5V
2 3
PS2561AL
200-400%
PC5 R38
GND
1 4
1 2 MT_RY_CHECK
100 J 0.1W
2 3
PS2561AL
200-400%
GND
12V
2
Q1
KRC246S
0.2W
3
1
C
2
B
MOTOR
RY1
4
E
PCJ-112D3MH
5V
0.2W
5
RN2427
1 12V
3 Q6
LAMP
2
Q3
G
4
KRC246S
0.2W
I
3 1
O
5 C
2 3
B 1
3
STEAM_V1 CE10
1uF
E
50V
2
4 1
1
5
CE11
1uF
3
STEAM_V2 50V DARLINGTON TR
WATCH_DOG
OPTION 2
3
GND
HEATER1
4
2
HEATER2
1
OPTION
CN6
1
YDW236-01
12V
GRN OPTION
VA2
47V
2 1 12V
1M J 0.25W
IC6
1
1 2 1
C25
R43 OUTA
10nF
2
50V
R44 R47 -INA
3
1 2 1 2 +INA
2
4
1M J 0.25W 1K J 0.125W
GND
R48 1 TD2 1 1
C28 D12
1 2
10nF C27 C24 KA2904
1N4148WS 10nF 10nF
1K J 0.125W HEAT_TH1 50V
1 75V 150mA 50V 50V
CE9
R58 10uF R45 2 2 2
50V
2
GND
GND
C4 C31
400V,2.2nF 400V,2.2nF
T1
1 10
1
C32
2 9
4.7nF
1
1KV
SF26
3 8 400V 2A
2
1
C2
4.7nF
4 7
1KV
R2
D10
2
1 2 5 6
2 1
82K J 2W
SF26
DC26-00031C
2A 400V
8V
1 GND
AGND
D8
CE4
1uF
R9 1 2
50V
TNY277GN 10K SF26
J 0.25W
400V 2A
2
S D
4
12V CE7
S NC
470uF
3
AGND 25V
S BP/M R8 PC6 R10
4 1
2
S EN/UV 1 2 1 2
1
1K J 0.1W 330 J 0.5W
1
IC1
C11
GND
100nF
3 2
50V
PS2561AL
2 200-400% ZD1
MTZJ11B
11V 0.5W
AGND AGND
GND
EEPROM
5V
5V
4.7K J 0.1W
R76 R75 PC7 R74
HV_CHECK
1 4
1 2 1 2 1 2
1
300K J 2W 82K J 2W 100 J 0.1W
R70 C23
100nF
D21
AC2 50V
2 3
2 1
PS2561AL 2
1N4007
200-400%
1A 1KV 5V
GND
R62 R33
51KJ 2W
4.7K J 0.1W
PC3 R37 GND
AC_ON_CHECK
1 4
1 2 1 2
100 J 0.1W
D7
AC2 2 3
2 1
1N4007 PS2561AL
200-400%
1A 1KV MICOM
GND
D18
AC_INT_2
2 1
1N4148WS
150mA 75V
IC5
16 1
HEATER1 HEATER1_RELAY
O1 I1
15 2
HEATER2 O2 I2 HEATER2_RELAY
10 7
LAMP LAMP_RELAY
O3 I3
13 4
AC_INT_2 O4 I4 AC_INT_1
14 3
O5 I5
11 6
STEAM_V1 STEAMV1_RELAY
O6 I6
12 5
STEAM_V2 STEAMV2_RELAY
O7 I7
9 8 RESET
VCC GND
2003 100nF
1W
GND
12V 5V
R56
240K,F,0.5W
8
VCC R4
MOISTURE_SENSOR
7
OUTB 1 2
6
10K,F,0.125W
-INB
5
+INB
1 1
C26
C6 10nF
100nF R57
50V
50V
27K,F,0.1W
2 2
MICOM_WRITING
R11
5V
1 2
10 J 0.25W 12V CN3
D9 1
2 2
3
1 1
CE5 C10 4
1000uF 100nF
25V 50V
5
6
2 2
OPTION
FLMD0
7
D2 1N4007 GND GND
8
1A 1KV
SMW250-08DK
BLK
2 1
5V
IC2 NJM7805
GND GND GND
1 3
5V
IN OUT
GND
1 1 2
1 1
C20 CE6 C9 COMMUNICATION
100nF 470uF 100nF
50V 25V 50V
GND
12V 5V
2 2
GND
2 2
2
KIA78D05F
1
GND GND GND GND
C12 1
IN OUT
100nF C5
1 3
100nF
50V
50V
IC7
WHT 2
2
OPTION SMW250-06DW
6
GND
5
4
3 SUB_RESET
GND
2
1
CN2
1
C29
4.7nF
50V
EEPROM
R65
2
EEPROM1 1 2
1
100,J,0.1W
IC4
1 1
C30 C15
100nF 100nF
50V 50V
2 2
GND GND GND GND
1
C14
GND
100nF
50V
5V
HV_CHECK 2
1 39
P140 AVSS
2 38
P120 AVREF
3 37
MOISTURE_SENSOR
P41 P10
4 36
P40 P11
5 35
NRESET P12
1 1 6 34
EEPROM
P124 P13
C13 CE13 IC3
7 33
22uF uPC78F0524
EEPROM1 P123 P14
50V
50V
8 32
FLMD0
FLMD0 P15
OPTION
9 31
2 2
X1 P122 P16
10 30
1 2 P121 P17
11 29
1 AK08012202 1
REGC P30
1
8MHz
GND 12 28
CE3
VSS P31
C22 C21 1uF
13 27
0.022nF 0.022nF 50V
VDD P32
50V 50V
2 2
2
GND GND GND
5V
R64
1
100,J,0.1W
C7
100nF
50V
1
2
C19
100nF
OPTION 50V
2
GND GND GND
SO
SI
RESET
GND GND
5V
R66
TX
1 2
5V 100,J,0.1W
R12
RX
1 2
10K J 0.1W
2
0.2W
G RN2427
Q5
I
O 3
3 C
2 B
Q4
KRC246S
0.2W
E
1
GND
5V
1
C8
100nF
50V
2
GND TX
RX
SI
SO
AC_INT_1
MT_SW_CHECK
DOOR_CHECK
AC_ON_CHECK
1 1 1
C18 C17 C16
100nF 100nF 100nF
50V 50V 50V
2 2 2
GND GND GND GND
GND
Schematic Diagram _ 125