LG LS-P1260BB Service Manual ▷ View online
-48-
Turn off Main Power
• Check the electrical wiring diagram of outdoor side.
• Check the abnormal condition for the component of
• Check the abnormal condition for the component of
Compressor/Outdoor Fan Motor, 4 way.
• Check the "open" or "short" of connecting wires between indoor and
outdoor.
-49-
Electronic Control Device
(1) MAIN P.W.B ASSEMBLY
• TOP VIEW
• BOTTOM VIEW
-50-
(2) DISPLAY ASSEMBLY
• LS-P126_SERIES
(3) SUB P.W.B ASSEMBLY
• LS-P126_SERIES
• TOP VIEW
• TOP VIEW
• BOTTOM VIEW
• BOTTOM VIEW
Schematic Diagram
CN-WIDE
0.01
C04L
25V
8
9
12V
IC04M
4
3
1
13
14
16
12
5
3
4
3
4
5
5
1
1
2
2
55
4
3
4
3
11
22
RXE250
POLY SW2
digit 1
digit 2
LED scan
c
e
d
b
g
a
f
R07G 220
R06G 220
R05G 220
R04G 220
R03G 220
R02G 220
R01G 220
IC03M
14
15
3
2
1
16
5
6
4
7
12
11
13
10
8
9
10
7
11
6
IC02M
2
3
4
5
1
15
14
13
12
16
8
9
12V
KID65004AF
KID65004AF
IC02M
CN-D5
CN-D6
CN-D7
CN-D4
CN-D3
CN-D2
CN-UD
CN-D2
Q03C
Q02C
Q01C
5V
Q04C
KTC3198Y
OJ02H
OJ01H
5V
R27H 20K
R28H 20K
8
1
3
4
2
7
6
5
9
16
5V
IC01M
KID65004AF
14
13
15
11
10
12
DC 5V
S
6
9
8
7
6
7
8
9
6
9
8
77
8
9
6
9
8
7
9
8
7
10
5
4
66
5
4
2
2
11
3
3
10
7
8
9
7
8
9
10
10
4
5
6
6
4
5
1
1
2
2
33
14
14
11
11
12
13
9
9
8
8
7
7
10
66
5
5
4
4
2
11
2
3
3
10
12
13
13
12
11
13
12
11
88
9
10
9
10
14
14
55
6
6
2
3
1
1
2
3
GND
Vout
Vcc
DISPLAY
CN-MAIN
44
77
TEST
KEY
DC 5V
RECEIVER
CN-LR2
CN-LR1
CN-D1
CN-D1
1
1
22
3
3
44
5
5
RD
PK BL
YL
OR
1
1
22
3
3
44
5
5
RD
PK BL
YL
OR
1
1
22
3
3
44
5
5
RD
PK BL
YL
OR
G4A-1A
CN-GND
11
472M
CY1 ~ CY2
CY2
CY1
WXE-224K
N/FILTER2
ZNR1
C
D
Q
RY-FAN
4-WAY
RY-COMP
FG 1
EEPROM
IC 1
STEPPING MOTOR
»Ì¿‘
±∏
4
»Ì¿‘
±∏
3
STEPPING MOTOR
»Ì¿‘
±∏
1
STEPPING MOTOR
STEPPING MOTOR
»Ì¿‘
±∏
2
PK BL
RD OR YL
STEP MOTOR
L / R 2
L / R 1
OR
YL
PK
RD
BL
RD
YL
PK
OR
BL
BL
12V
SUB PCB ASM
1
1
2
3
4
5
3
2
5
4
1
1
5
4
3
2
2
3
4
5
5V
1
2
3
4
5
1
4
3
2
5
1
1
4
3
2
5
2
3
4
5
STEP MOTOR
55
44
11
22
3
3
12V
5
2
4
3
1
5
3
4
2
1
IC03M
PWM
FG 2
5V
50/60Hz
FG2
3
4
2
1
CN-MOTOR 2
DC 12V
1
FAN
INDOOR
MOTOR
4
3
2
2
2
11
11
11
RY-COMP
4
3
1
1
1
1
FUSE
250V/3.15A
WXE-334K
N/FILTER1
5
6
7
8
4
3
2
1
CN-4WAY/FAN
CN-OUT
CN-COMP
CN-POW1
CN-POW2
AC220-240V
U4SBA60
BD61
5V
ROOM-TH
PIPE-TH
NTC2
C61
450V
100uF
+
10D-9
C62
222K
1KV
1/2W
R62
560K
4
1
1
2
3
KSC7536
KIA7036P
3W
2
C63
101K
1KV
ST1
11
R63
68K
4
3
2
CN-TH1
IC01A
R02E,20
OR
RD
PK
YL
STEPPING MOTOR
ªÛ«œ
≈
‰
√
‚
±∏
5.1K
C01L
R02L,1K
R01L
1
3
R02A,20K
50V
R01B,1M
680pF
2
5V
25V
0.01
1%
L63
L64
D62
FMX12S
C65
+
C66
C67
473K
100V
63V
680uF
6.2K
1%
R04H
R05H
10K
R64
10K
1%
12.1K
5V
12.1K
R02H
C01A
BZ01E
1K
PKM13EPP-4002
INT1
X2
X1
Vss1
RESET
INTO
5V
R21H
R26H
R24H
R25H
R22H
R23H
AVdd
AVret
AVss
R21H~R26H
R01E
receiver
CST-8.00MTW
3.6V
OSC01B
L61
L62
821K,1KV
COIL1
150-F06M
R65 30,1W
200
R66
ZD01D
P6KE200
D61
Q61
4
12V
ZD61
7
ST2
8
3
1.5K
2
C03D, 681
+
D07D
UF5402
13V
R03D
39
+
330
C06D
L1,BFD2070
49
S TRANS
2SK2671
ERB44-08
B
EN
S
BP
D06D
UF4005
IC01D
TNY255
IC02D
470/35V
104
TLP621
R02D
ZD02D
12V
20K
472M
C05D
C02D
C04D
35V
C60
103K
Q62
R68
2SD2220
C68
C69
103
C07D
100K
7805
IC04D
100V
5V
O
+
10V
220
C09D
0.01
50V
C08D
OR1H
F1
S/Low
OR2H
Q71
KRA102M
DC 5V
R71
10.2K,1%
4.3K
7
21.5K
5
13
+
-
6.04K
OR5H
Hi
Med
OR4H
S-Hi
OR6H
35.7K
11
9
3
13K
10
8
-
+
3K
5.23K
7
14
20K
1.06K
39.2K
OR3H
Low
C71
+
+
100uF
25V
-
4
100V
102J
C72
51.1K
1
1
5.1K
1%
R73
13K
+
5
+
102
-
29.4K
8
34K
23.2K
R74
2K,1%
R75
4
100uF
C73
25V
22
+
2
6
11K,1%
R72
PWM
R67
222K 630V
472M 250V~
VssO
Vdd0
5V
DC 5V
C11H
103
50V
1K
R11H
10K
R12H
220 10V
C02L
receiver
8
2
3
HCP6068
IC7
220
FG1
4
3
2
2
3
4
INDOOR
FAN
1
CN-MOTOR 1
1
MOTOR
DC 12V
POLY SW1
RXE250
VR71
0IMCRNE001W
uPD780023AGC
AVdd1
RY-FAN
RY-4WAY
LED1
LED4
LED3
LED2
D02C
1N4007
12V
15K
R04C
R03C,4.7K
3(a)
f
g
b
a
e
d
5
c
6(d)
1(g)
4(f)
7(e)
8(c)
9(b)
Digit1
TIMER
ON/OFF
10
DEFROST
SLEEP
Digit2
48
51
50
49
44
46
45
47
53
56
55
54
52
41
40
42
38
37
36
39
43
33
35
34
31.
30
32
27
25
26
28
29
58
61
60
59
63
1
64
5
4
3
2
62
9
8
7
11
12
13
10
6
20
21
23
22
18
16
14
15
17
19
24
57
-51-
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