Read LG 55LV355B-UA / 55LV355C-UA (CHASSIS:LA0AC) Service Manual online
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
22
R1057
+3.5V_ST
+3.5V_ST
O
C
D
1A
T
P
1
0
0
1
NEC_ISP_Tx
POWER_ON/OFF2_1
10
K
R
10
09
AMP_RESET
CEC_ON/OFF
4.7M
R1034
OPT
0
.1
u
F
C
10
02
1
u
F
C
10
09
KEY2
NEC_ISP_Rx
NEC_EEPROM_SCL
KEY1
FL
M
D
0
22
R1065
SOC_RESET
AMP_RESET
NEC_SDA
22
R1010
OCD1A
MODEL1_OPT_2
10
K
R
10
30
22
R1090
TP1602
0.1uF
C1003
10
K
R
10
75
2
2
06
01
R
MODEL1_OPT_2
0.1uF
C1010
10K
R1091
TP1002
OCD1B
+3.5V_ST
S
/T
_S
D
A
S7
_N
E
C
_R
X
D
12505WS-12A00
P1001
1
2
3
4
5
6
7
8
9
10
11
12
13
47
K
R
10
46
22
R1049
22
R1081
N
E
C
_I
S
P
_T
x
NEC_ISP_Rx
TP1003
OCD1A
OCD1B
22
R1080
AT24C16BN-SH-B
IC1001-*1
a_EEPROM_NEC_16KBIT_ATMEL
3
NC_3
2
NC_2
4
GND
1
NC_1
5
SDA
6
SCL
7
WP
8
VCC
22
R1023
M24C16-WMN6T
IC1001
EEPROM_NEC_16KBIT_STM
3
NC/E2
2
NC/E1
4
VSS
1
NC/E0
5
SDA
6
SCL
7
WC
8
VCC
TP1601
1
5
p
F
C
10
07
PANEL_CTL
32.768KHz
X1002
a_CRYSTAL_EPSON
+3.5V_ST
2
2
R
10
39
PO
W
E
R
_O
N
/O
FF
2_
2
22
R1066
CEC_REMOTE_NEC
NEC_ISP_Tx
10K
R1073
OPT
uPD78F0514
IC1002
1
P60/SCL0
2
P61/SDA0
3
P62/EXSCL0
4
P63
5
P33/TI51/TO51/INTP4
6
P75
7
P74
8
P73/KR3
9
P72/KR2
10
P71/KR1
11
P70/KR0
12
P32/INTP3/OCD1B
1
3
P
31
/I
N
T
P
2/
O
C
D
1A
1
4
P
3
0
/I
N
T
P
1
1
5
P
1
7
/T
I5
0
/T
O
5
0
1
6
P
1
6
/T
O
H
1
/I
N
T
P
5
1
7
P
15
/T
O
H
0
1
8
P
14
/R
X
D
6
1
9
P
13
/T
X
D
6
2
0
P
1
2
/S
O
1
0
2
1
P
11
/S
L
10
/R
X
D
0
2
2
P
10
/S
C
K
10
/T
X
D
0
2
3
A
V
R
E
F
2
4
A
V
SS
25
ANI7/P27
26
ANI6/P26
27
ANI5/P25
28
ANI4/P24
29
ANI3/P23
30
ANI2/P22
31
ANI1/P21
32
P20/ANI0
33
P130
34
P01/TI010/TO00
35
P00/TI000
36
P140/PCL/INTP6
3
7
I
V
L
X
E/
0
P
T
NI/
0
2
1
P
3
8
P
4
1
3
9
P
4
0
4
0
R
E
SE
T
4
1
P
12
4/
X
T
2/
E
X
C
L
K
S
4
2
P
1
2
3
/X
T
1
4
3
FL
M
D
0
4
4
P
12
2/
X
2/
E
X
C
L
K
/O
C
D
0B
4
5
P
12
1/
X
1/
O
C
D
0A
4
6
R
E
G
C
4
7
V
SS
4
8
V
D
D
INV_CTL
1/
16
W
20
K
1%
R
10
89
CEC_ON/OFF
22
R1013
0
R1020
10
K
R
10
71
O
PT
32.768KHz
CRYSTAL_KDS
X1002-*1
2SC3052
Q1001
E
B
C
+3.5V_ST
22
R1078
10
K
R
10
12
OCD1B
K7
4
10
01
R
NEC_EEPROM_SCL
22
R1048
+3.5V_ST
22
R1019
4.7K
R4035
4.7K
R4034
1
5
p
F
C
10
08
10K
R1006
OPT
10
K
O
PT
R
10
11
+3.5V_ST
+3.5V_ST
22
R1076
AMP_MUTE
POWER_ON/OFF1
L
E
D
_R
/B
U
Z
Z
L
E
D
_B
/L
G
_L
O
G
O
0
.1
u
F
C
10
06
S7
_N
E
C
_T
X
D
10K
R1052
NEC_SCL
22
R1018
10
K
R
10
74
M
IC
O
M
_R
ES
ET
FLMD0
1/16W
20K
1%
R1047
2
2
14
01
R
22
R1056
2
2
73
01
R
N
E
C
_I
S
P
_R
x
S
/T
_S
C
L
+3.5V_ST
RL_ON
NEC_EEPROM_SDA
MICOM_RESET
EDID_WP
22
R1055
2
2
R
10
43
PANEL_CTL
10K
R1005
OPT
10K
R1050
2
2
86
01
R
22
R1008
PO
W
ER
_D
ET
10
K
O
PT
R
10
79
+3.5V_ST
10K
R1072
OPT
2
2
96
01
R
10
K
O
PT
R
10
04
10K
R1084
OPT
10K
R1083
OPT
IR
22
R1063
10K
R1002
NEC_EEPROM_SDA
GND
22
R1054
2
.7
K
R
10
14
2
.7
K
R
10
15
EXT_AMP_SD
SUB_MUTE
+
3
.5
V
_
S
T
TOP SIDE for reset.
EEPROM for Micom
NEC CONFIGURATION
MODEL_OPT_0
MODEL_OPT_3
(MODEL_OPT_3)
MICOM MODEL OPTION
(MODEL_OPT_0)
for Debugger
MODEL_OPT_1
(MODEL_OPT_1)
GP2R
MICOM Rev.4
20101125
5
31
HIGH
31
LOW
S/T & IIC LED & NO BUZZ & LED Blink
32/37/42/47/55LE5300
PIN NO.
8
HIGH
LOW
HIGH
LOW
HIGH
LOW
LOW
GP3
LOW
PWM_BUZZ/IIC_LED : For model that use LED Lighting used IIC
LOW
LOW
LOW
GPIO_LED
TACT_KEY
IIC LED(09Y IIC Protocol) & No BUZZ
HIGH
Low
LOW
MODEL_OPT_2
IIC LED & PWM BUZZ
LE7300
B/L_LED
HIGH
LOW
NON_GPIO_LED
HIGH : LAMP
LOW
30
PIN NAME
LV25/LV35/LV45/LW45/LV55/LK45/LK55
MODEL OPTION
MODEL OPTION
MODEL_OPT_0
TOUCH_KEY
PWM_BUZZ/IIC_LED
LOW
PWM_LED : For model that use LED Lighting used PWM Signal
LOW
LOW
PWM_BUZZ/IIC_LED :Using IIC for LED Breathing & PWM Buzz
MODEL_OPT_2
MODEL_OPT_0
PWM_LED
MODEL_OPT_3
HIGH
PIN NAME
8
D e s c r i p t i o n
LOW
LD350/450/550
HIGH
LOW : LED
HIGH
11
HIGH
PIN NO.
PWM_BUZZ/IIC_LED
GPIO LED & NO BUZZ
MODEL_OPT_1
TBD
B/L_LED
MODEL_OPT_1
KEY & PWM LED & No Buzz & No LED Blink
LOW
HIGH
HIGH
HIGH
PWM LED & No Buzz & No LED Blink
LK330/LK430/LK530
MODEL_OPT_2
30
MODEL_OPT_1
PWM_LED
TACT_KEY
PWM_LED : Using PWM Signal for LED Lighting
LOW
MODEL_OPT_3
LOW
MODEL_OPT_0
LOW
MODEL_OPT_0
LOW
IIC LED & PWM IIC BUZZ
MODEL_OPT_3
TBD
LK330/LK430 for KR/US
KEY & PWM LED & No Buzz & No LED Blink
MODEL_OPT_3
LOW
HIGH
LOW
LOW
MODEL_OPT_2
LOW
HIGH
11
TOUCH_KEY
10Y EYE-Q Sensor
2010Y,GP2
IIC LED(09Y IIC Protocol) & No BUZZ
B/L_LAMP
B/L_LAMP
GP2
19/22/26LE5300/5300
S/T & IIC LED & No Buzz & LED Blink
2011Y,GP2R, 101125 Update
LD420
MODEL_OPT_1
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