LG L1404R Service Manual - Page 19
Schematic Diagram
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Schematic Diagram Electronic Control Device Schematic Diagram Service Manual 19
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Service Manual
19
Schematic Diagram
4WAY
MAIN POWER
CAPACITOR
MOTOR
FAN
35V
2
4
D02D~D05D
1N4004
SVC271D-14A
CN-PWR
FUSE
125V/T2A
ZNR01J
0.1/275V
C01J
CN-MOTOR
120 1/2W
R01J
+
+
POWER TRANS
1
7
220
C05D
10V
C06D
25V
0.01
D05D
D02D
D03D
+
C01D
1000
D04D
C03D
1000
16V
25V
C04D
0.01
7805
IC02D
O
5V
I
O
12V
50V
C02D
0.1
S/V-
CN-4WAY
3
3
1
1
IC01M
ULN2004A
16
1
12.1K
R02H
R04H
6.2K
12V
SEG-e
HVB
SEG-f
VDD
5V
SEG-d
SEG-c
Digit0 (Scan0)
SEG-a
4WAY
LOW
COMP
SYNC
Digit2 (Scan2)
Digit1 (Scan1)
Rx
Receiver
SDA
Osc in
Osc out
/Reset
R01B
3.6V
3
2
0.01
C01A
S7136
IC01A
5V
RT8.00MG
OSC01B
1
R01A
5V
Vcc
GND
RECEIVER
+
10V
220
C02L
Vout
680pF
C01L
R01L
TEST
10V
1uF
C02A
+
BZ01E
R01E
R02E
SCL
12V
ROOM-TH
CN-TH1
1
2
2
1
OR2H
OR1H
1
44
LED MODULE
Digit1
d
e
g
c
Digit2
f
Digit3
a
b
12
13
Digit0
14
a
15
FAN
1
Digit4 (Scan4)
Digit3 (Scan3)
5V
IC02G
10
R08G
R11G
R10G
R09G
R01G
5.1V
ZD02F
R03F
10K
0.001
C01F
R01F
10K
ZD01F
5.1V
C02F
0.001
7812
I
IC01D
2
3
4
5
6
7
8
9
10
11
43
42
41
40
39
38
37
36
35
34
22
17
19
21
20
18
16
15
14
13
12
23
24
25
26
27
28
29
30
31
32
33
7
11
6
12
5
13
4
14
3
15
2
16
1
9
8
9
16
15
14
13
12
11
10
8
IC01G
7
6
5
1
4
3
2
15
2
14
3
13
4
12
5
11
6
10
7
9
8
R22H
R21H
12.1K
12.1K
5V
SEG-b
VSS
5V
VAref
Room TH
Pipe TH
Option1
Option2
R02G
2
b
R03G
3
c
R04G
4
d
R05G
5
e
R06G
6
f
R07G
7
g
1
1
1
0
9
8
Tx
ION
MED
HI
KEY0
KEY1
LED out0
LED out1
LED out2
LED out3
Buzzer
5V
1
3
5
7
9
1
3
5
7
9
1
3
1
3
COMP
d
e
g
c
a
f
b
d
e
g
c
a
f
b
d
e
g
c
a
f
b
D01G
SW01G
TEMP DOWN
SW02G
D02G
ON/OFF
SW03G
D03G
TIMER
SW04G
D04G
MODE
SW05G
D05G
TEMP UP
SW06G
D06G
FAN
HERM
C
RY-COMP
G4A-1A-E-LG
RY-HI
RY-MED
RY-LOW
RY-4WAY
CN-TELE
Q01T
C104M
Q02T
A104M
5V
Q04T
A104M
Q03T
C104M
C03T
0.001
R01T
1K
D01T
1N4148
C01T
0.1
C02T
0.001
5V
RY-COMP
RY-4WAY
RY-LOW
RY-MED
RY-HI
9
IC03G
5
6
7
1
2
3
4
10
12
13
14
18
15
16
17
11
8
R02F
1K
R04F
1K
2
1
9
8
7
6
5
4
5V
12V
5V
12V
11
10
12
R01P
20K
5V
A2
SCL
SDA
GND
4
5
CAT93C46
Vcc
EEPROM
WP
2
1
A0
3
A1
7
8
6
5V
50V
25V
1%
1%
1%
1%
1M
20K
25V
12V
KID65783AP
12V
12V
ULN2004A
ULN2004A
25V
1K
PKM13EPY
1K
20
-4002
MICOM
TMP87CH47U
16
PIPE-TH
1
1
2
2
CN-TH2
R03P
20K
20K
R02P
SEG-g
FAN
TIMER
SLEEP
DEFROST
DEFROST
1
2
COOL
HEAT
INDOOR
DESIRED
1
1
FAN(L1)
FAN(L2)
FAN(R1)
FAN(R2)
ENERGY
SAVER
AUTO
AIR
FAN(R3)
FAN(L3)
INDOOR
2
2
DESIRED
PURIFIER
RESTART
680
680
680
680
680
680
680
680
680
330
330
3
11
12
10
7
9
8
6
5
4
1
3
2
SMW200-03
SMW250-02
YW396-03AV(YL)
YW396-09AV
YW396-03AV
CN-AC/DC
51580-12
SMAW200-02
CN-AC/DC
51581-12(YEONHO)
52045-1245
52044-1245(MOLEX)
STRAIGHT
ANGLE
Rx
Tx
CN-12V
SMW200-03(WH)
SW1
2
2
1
1
3
3
3
3
CN-CONT
SMW200-03(BL)
CN-HVB
SMW200-03(YL)
SW2
2
2
1
1
3
3
2
2
1
1
J5
R04P
1K
FAN
(MODE)
DRY
0.01
25V
C05D
(RD)
J7
1
3
3
1
2
2
HVB
Electronic Control Device
Schematic Diagram