LG 50PZ750-UG (CHASSIS:PU12A) Service Manual ▷ View online
THERMAL
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.
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.
DDC_SCL_4
D2-_HDMI2
DDC_SDA_2
R709
0
CK+_HDMI2
D1-_HDMI1
D1-_HDMI2
D1+_HDMI1
CK-_HDMI2
DDC_SDA_3
DDC_SCL_2
D0+_HDMI2
DDC_SCL_3
R705
0
D0-_HDMI4
D0-_HDMI3
D2+_HDMI3
CK-_HDMI1
CEC_REMOTE
CK+_HDMI1
DDC_SDA_4
D0-_HDMI2
D2+_HDMI1
DDC_SCL_1
D1-_HDMI3
CEC_REMOTE
D2-_HDMI3
D1-_HDMI4
D2-_HDMI1
R701
0
0
D2-_HDMI4
CEC_REMOTE
D1+_HDMI4
D0+_HDMI4
D0+_HDMI1
D0-_HDMI1
R708
0
0
CK-_HDMI3
CK+_HDMI3
R719
0
HDMI_4_PORT
R704
0
0
CK-_HDMI4
D1+_HDMI2
R718
0
0
HDMI_4_PORT
D2+_HDMI4
R702
0
D2+_HDMI2
CEC_REMOTE
CK+_HDMI4
DDC_SDA_1
D1+_HDMI3
D0+_HDMI3
CEC_REMOTE
R732
22K
HDMI_CEC
BSS83
Q710
S
B
D
G
+3.3V_ST
JK701
RSD-105156-100
14
RESERVED
13
CEC
5
TMDS_DATA1_SHIELD
20
BODY_SHIELD
12
TMDS_CLK-
11
TMDS_CLK_SHIELD
2
TMDS_DATA2_SHIELD
19
HOT_PLUG_DETECT
18
VDD[+5V]
10
TMDS_CLK+
4
TMDS_DATA1+
1
TMDS_DATA2+
17
DDC/CEC_GND
9
TMDS_DATA0-
8
TMDS_DATA0_SHIELD
3
TMDS_DATA2-
16
SDA
7
TMDS_DATA0+
6
TMDS_DATA1-
15
SCL
JK704
RSD-105156-100 HDMI_4_PORT
14
RESERVED
13
CEC
5
TMDS_DATA1_SHIELD
20
BODY_SHIELD
12
TMDS_CLK-
11
TMDS_CLK_SHIELD
2
TMDS_DATA2_SHIELD
19
HOT_PLUG_DETECT
18
VDD[+5V]
10
TMDS_CLK+
4
TMDS_DATA1+
1
TMDS_DATA2+
17
DDC/CEC_GND
9
TMDS_DATA0-
8
TMDS_DATA0_SHIELD
3
TMDS_DATA2-
16
SDA
7
TMDS_DATA0+
6
TMDS_DATA1-
15
SCL
JK703
RSD-105156-100
14
RESERVED
13
CEC
5
TMDS_DATA1_SHIELD
20
BODY_SHIELD
12
TMDS_CLK-
11
TMDS_CLK_SHIELD
2
TMDS_DATA2_SHIELD
19
HOT_PLUG_DETECT
18
VDD[+5V]
10
TMDS_CLK+
4
TMDS_DATA1+
1
TMDS_DATA2+
17
DDC/CEC_GND
9
TMDS_DATA0-
8
TMDS_DATA0_SHIELD
3
TMDS_DATA2-
16
SDA
7
TMDS_DATA0+
6
TMDS_DATA1-
15
SCL
JK702
RSD-105156-100
14
RESERVED
13
CEC
5
TMDS_DATA1_SHIELD
20
BODY_SHIELD
12
TMDS_CLK-
11
TMDS_CLK_SHIELD
2
TMDS_DATA2_SHIELD
19
HOT_PLUG_DETECT
18
VDD[+5V]
10
TMDS_CLK+
4
TMDS_DATA1+
1
TMDS_DATA2+
17
DDC/CEC_GND
9
TMDS_DATA0-
8
TMDS_DATA0_SHIELD
3
TMDS_DATA2-
16
SDA
7
TMDS_DATA0+
6
TMDS_DATA1-
15
SCL
C730
0.1uF
HDMI_ARC
R738
63.4
1
%
D0-_HDMI3
C735
0.1uF
16V
D2-_HDMI1
R725
10
10
D0+_HDMI3
DDC_SCL_2
D1-_HDMI2
+3.3V_Normal
DDC_SDA_4
C739
1uF
R727
10
10
DDC_SDA_1
D2+_HDMI1
C741
1uF
CK-_HDMI4
+3.3V_Normal
C736
0.1uF
16V
C742
1uF
HDMI_CLK+
D1-_HDMI4
D0-_HDMI1
D1+_HDMI4
D0+_HDMI1
D0-_HDMI4
5V_HDMI_3
D1-_HDMI3
C737
0.1uF
16V
D2+_HDMI3
CK-_HDMI1
D0+_HDMI4
C738
1uF
10V
10V
SCL3_3.3V
DDC_SDA_3
CK+_HDMI1
5V_HDMI_1
HDMI_RX2-
D0-_HDMI2
C733
10uF
10V
10uF
10V
HDMI_HPD_2
DDC_SCL_3
D2-_HDMI2
HDMI_RX2+
C732
10uF
10V
10uF
10V
HDMI_HPD_1
CK-_HDMI2
D1-_HDMI1
5V_HDMI_4
D1+_HDMI1
R716
0
C740
1uF
C734
0.1uF
16V
R723
10
10
C743
1uF
CK+_HDMI3
D2-_HDMI4
5V_HDMI_2
HDMI_RX1+
C731
10uF
10V
10uF
10V
D2-_HDMI3
HDMI_RX0-
HDMI_RX0+
D2+_HDMI4
DDC_SCL_1
HDMI_HPD_4
CK-_HDMI3
HDMI_CLK-
HDMI_HPD_3
HDMI_RX1-
D0+_HDMI2
D1+_HDMI3
DDC_SCL_4
CK+_HDMI4
R713
4.7K
4.7K
R720
10
10
DDC_SDA_2
D2+_HDMI2
+5V_Normal
CK+_HDMI2
SDA3_3.3V
D1+_HDMI2
+3.3V_Normal
R730
0
0
OPT
R714
4.7K
OPT
R715
4.7K
OPT
R739
120K
R736
4.7K
4.7K
DDC_SCL_2
R731
4.7K
R741
4.7K
5V_HDMI_1
DDC_SCL_1
DDC_SCL_4
DDC_SCL_3
+5V_Normal
DDC_SDA_3
+5V_Normal
D716
A2
C
A1
R733
4.7K
R737
4.7K
DDC_SDA_4
DDC_SDA_2
5V_HDMI_3
D713
A2
C
A1
D717
A2
C
A1
DDC_SDA_1
5V_HDMI_2
+5V_Normal
R734
4.7K
D715
A2
C
A1
R740
4.7K
5V_HDMI_4
R735
4.7K
+5V_Normal
R707
0
R711
OPT
D712
5.5V
5.5V
OPT
C744
0.1uF
OPT
0.1uF
OPT
HDMI_HPD_1
R710
3.6K
3.6K
OPT
R712
1K
OPT
OPT
5V_HDMI_1
R717
0
HDMI_4_PORT
R749
1K
OPT
C747
0.1uF
OPT
HDMI_HPD_4
R747
3.6K
OPT
R748
OPT
D719
5.5V
OPT
5V_HDMI_4
R703
0
5V_HDMI_2
R722
3.6K
3.6K
OPT
R746
1K
OPT
R744
OPT
HDMI_HPD_2
D718
5.5V
5.5V
OPT
C746
0.1uF
OPT
OPT
R742
3.6K
OPT
D711
5.5V
OPT
C745
0.1uF
OPT
5V_HDMI_3
R743
OPT
HDMI_HPD_3
R745
1K
OPT
R706
0
D714
BAT54
IC700
SII9287B
1
R1XCN
2
R1XCP
3
R1X0N
4
R1X0P
5
R1X1N
6
R1X1P
7
R1X2N
8
R1X2P
9
VCC33_1
10
RSVD_1
11
R2XCN
12
R2XCP
13
R2X0N
14
R2X0P
15
R2X1N
16
R2X1P
17
R2X2N
18
R2X2P
19
R3XCN
20
R3XCP
21
R3X0N
22
R3X0P
23
R3X1N
24
R3X1P
25
R3X2N
26
R3X2P
27
VCC33_2
28
RSVD_2
29
DSDA0
30
DSCL0
31
CBUS_HPD0
32
R0PWR5V
33
DSDA1
34
DSCL1
35
CBUS_HPD1
36
R1PWR5V
37
MICOM_VCC33
38
SBVCC
39
DSDA2
40
DSCL2
41
CBUS_HPD2
42
R2PWR5V
43
DSDA3
44
DSCL3
45
CBUS_HPD3
46
R3PWR5V
47
DSDA4
48
DSCL4
49
R4PWR5V
50
CEC_A
51
CEC_D
52
INT
53
CSDA
54
CSCL
55
TPWR_CI2CA
56
TX2P
57
TX2N
58
TX1P
59
TX1N
60
TX0P
61
TX0N
62
TXCP
63
TXCN
64
VCC33_3
65
R0XCN
66
R0XCP
67
R0X0N
68
R0X0P
69
R0X1N
70
R0X1P
71
R0X2N
72
R0X2P
73
[EP]GND
R729
150
1
%
SCL2_3.3V
SDA2_3.3V
R750
0
OPT
R751
0
OPT
R752
0
0
R753
0
0
MDS62110209
M104
MDS62110209
M103
MDS62110209
M105
R728
1K
1%
1
/
1
6
W
R721
1K
1%
1
/
1
6
W
R724
1K
1%
1
/
1
6
W
R726
1K
1%
1
/
1
6
W
HDMI3
BCM35230
7
HDMI1
HDMI
HDMI4
HDMI2
31
* HDMI CEC
For Side ESD
ARC
HDMI2
HDMI4
HDMI S/W OUTPUT
HDMI1
HDMI3
EDID Pull-up
F
i
b
e
r
O
p
t
i
c
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.
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.
DSUB_R+
+5V_Normal
R810
22
C802
560pF
50V
50V
D804
30V
DSUB_VSYNC
NEC_TXD
EDID_WP
R806
2.7K
NEC_RXD
IC801
74F08D
3
Q0
2
D0B
4
D1A
1
D0A
6
Q1
5
D1B
7
GND
8
Q2
9
D2A
10
D2B
11
Q3
12
D3A
13
D3B
14
VCC
RGB_DDC_SDA
D808
30V
30V
D807
30V
30V
R846
0
D806
30V
30V
R829
4.7K
R814
2.7K
R830
0
C805
560pF
50V
50V
+5V_Normal
BCM_TX
DSUB_DET
D803
30V
30V
OPT
IR_OUT
+3.3V_Normal
C809
18pF
18pF
50V
C803
0.1uF
0.1uF
16V
D812
5.6V
BCM_RX
D810
ENKMC2838-T112
A1
C
A2
D805
30V
PC_L_IN
C820
0.1uF
0.1uF
DSUB_B+
R809
22
R841
0
JP809
R832
4.7K
RGB_DDC_SCL
R831
0
D809
5.6V
OPT
OPT
JP810
R801
22
PC_R_IN
+3.3V_Normal
C806
0.1uF
16V
SPDIF_OUT
R817
10K
R845
0
C813
0.1uF
R807
10K
10K
C811
0.1uF
16V
R836
0
C827
0.1uF
R808
10K
10K
IC805
MC14053BDR2G
OPT
3
Z1
2
Y0
4
Z
1
Y1
6
INH
5
Z0
7
VEE
8
VSS
9
C
10
B
11
A
12
X0
13
X1
14
X
15
Y
16
VDD
D813
30V
CDS3C30GTH
OPT
R812
75
D814
30V
CDS3C30GTH
OPT
+5V_Normal
C810
18pF
50V
R811
75
C815
0.1uF
R802
22
C801
560pF
50V
50V
C814
0.1uF
DSUB_HSYNC
DSUB_G+
R813
75
P802
SPG09-DB-009
1
2
3
4
5
6
7
8
9
10
IC802
AT24C02BN-SH-T
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
R819
2.7K
2.7K
R815
2.7K
2.7K
C812
0.1uF
IC803
MAX3232CDR
EAN41348201
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
DOUT2
8
RIN2
9
ROUT2
10
DIN2
11
DIN1
12
ROUT1
13
RIN1
14
DOUT1
15
GND
16
VCC
R820
1K
C804
560pF
50V
50V
D811
5.6V
OPT
L801
BLM18PG121SN1D
L802
BLM18PG121SN1D
R833
100
R834
100
R803
0
0
5%
+3.3V_ST
+3.3V_ST
+3.3V_ST
JK802
JST1223-001
1
GND
2
VCC
3
VINPUT
4
FIX_POLE
JK800
PEJ027-01
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
P801
SPG09-DB-010
1
RED
2
GREEN
3
BLUE
4
GND_1
5
DDC_GND
6
RED_GND
7
GREEN_GND
8
BLUE_GND
9
NC
10
SYNC_GND
11
GND_2
12
DDC_DATA
13
H_SYNC
14
V_SYNC
15
DDC_CLOCK
16
SHILED
C828
100pF
50V
50V
R847
22
R848
22
Q801
2SC3052
2SC3052
US
E
B
C
R816
47K
US
R818
47K
US
R835
2.7K
R800
100K
C816
82pF
50V
OPT
D815
CDS3C30GTH
D816
CDS3C30GTH
30V
C818
82pF
50V
OPT
R824
1K
R823
10
C819
270pF
50V
OPT
PC_SER_CLK
032:H20
+3.3V_Normal
R825
10
PC_SER_DATA
032:H20
C817
270pF
50V
OPT
L803
BLM18PG600SN1D
L804
BLM18PG600SN1D
L805
BLM18PG600SN1D
R804
470K
470K
R805
470K
470K
R821
0
R822
0
ZD8001
5.1V
ZD8003
5.1V
ZD8004
5.1V
ZD8002
5.1V
R826
0
0
OPT
R827
0
0
OPT
C808
22pF
50V
22pF
50V
C807
22pF
50V
22pF
50V
C821
4.7pF
50V
4.7pF
50V
OPT
C822
4.7pF
50V
4.7pF
50V
OPT
C823
4.7pF
50V
4.7pF
50V
OPT
R828
0
0
US
R837
100
KR_BR
R838
100
KR_BR
UART_RXD_3D
UART_TXD_3D
RS232C PHONE JACK
SPDIF OUT
RGB/ PC AUDIO/ SPDIF/ EARPHONE/ RS232C
RGB PC
8
HIGH : SELECT X1, Y1, SELECT MAIN TX/RX
PC AUDIO
LOW : SELECT X0, Y0, SELECT MICOM TX/RX
COMMON JACK
BCM35230
31
RGB Compiance Test Improve by BCM
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.
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.
R919
10K
1%
R915
100
100
KEY1
R920
10K
1%
KEY2
R916
100
100
L902
MLB-201209-0120P-N2
R924
22
22
R904
4.7K
L900
570
R925
22
22
L901
MLB-201209-0120P-N2
C902
0.1uF
16V
0.1uF
16V
L903
MLB-201209-0120P-N2
IR
C904
0.1uF
16V
0.1uF
16V
+3.3V_ST
C903
10pF
C900
10pF
OPT
D901
5.6V
CDS3C05HDMI1
C906
10pF
10pF
D900
5.6V
CDS3C05HDMI1
C901
10pF
OPT
+3.3V_ST
R903
4.7K
C907
10pF
R902
4.7K
LED_Power_On
SUB_SDA
SUB_SCL
D902
R909
22
22
C905
10pF
R900
4.7K
LED_RED
+3.3V_ST
+3.3V_Normal
+3.3V_Normal
L904
750/950
+5V_Normal
R905
0
0
C908
10pF
BLUE_LED_ON
R906
0
750/570
R901
0
0
950
TOUCH_Version_CHECK
P900
12507WS-15L
1
IR
2
GND
3
KEY1
4
KEY2
5
LED-RED
6
GND
7
SCL
8
SDA
9
GND
10
3.3V_ST
11
3.3V_MULTI
12
LED-WHITE
13
14
16
15
IR/KEY
BCM35230
9
31
SUB Board I/F
** IR OPT LIST
570 : L900 -> JUST INPUT TOUCH KEY VOLTAGE 3.3V
750/570 : R906 -> GALAXY CTRL PIN GND
750/950 : L904 -> GALAXY INPUT VOLTAGE 5V
905 : R901 -> GALAXY GTRL PIN - BLUE_LED_ON PATH
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.
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.
SIGN52200
R1005
33
R1002
22K
R1008
10K
SCL2_3.3V
WIRELESS_SCL
IR_PASS
WIRELESS_SDA
R1006
33
C1001
0.1uF
50V
0.1uF
50V
R1001
10K
WIRELESS_SDA
R1007
1K
C1003
0.01uF
50V
WIRELESS_PWR_EN
WIRELESS_SCL
+3.3V_Normal
Q1002
AO3407A
G
D
S
SDA2_3.3V
JK1001
KJA-PH-3-0168
14
GND_3
13
I2C_SDA
5
VCC(24V/20V/17V)_1
12
I2C_SCL
11
GND_2
2
VCC(24V/20V/17V)_2
19
GND_5
18
IR
10
RESET
4
VCC(24V/20V/17V)_4
1
VCC(24V/20V/17V)_1
17
GND_4
9
GND_1
8
INTERRUPT
3
VCC(24V/20V/17V)_3
16
UART_TX
7
DETECT
6
VCC(24V/20V/17V)_1
15
UART_RX
20
GND_6
21
SHIELD
WIRELESS_DET
R1003
2.2K
2.2K
P_17V
+3.3V_ST
IR_PASS
R1012
47K
47K
R1009
47K
R1013
22
+3.3V_ST
IR_OUT
R1011
10K
R1010
47K
R1014
0
OPT
Q1003
2SC3052
2SC3052
E
B
C
Q1004
2SC3052
2SC3052
E
B
C
C1002
2.2uF
L1000
MLB-201209-0120P-N2
Q1001
MMBT3904(NXP)
E
B
C
Wireless I2C connection with I2C_1
10
BCM35230
Wireless power
WIRELESS READY MODEL
Address : 0X20
WIRELESS
31
WIRELESS
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