DOWNLOAD LG 50PK750-ZA / 50PK750N-ZA (CHASSIS:PD01A) Service Manual ↓ Size: 16 MB | Pages: 35 in PDF or view online for FREE

Model
50PK750-ZA 50PK750N-ZA (CHASSIS:PD01A)
Pages
35
Size
16 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50pk750-za-50pk750n-za-chassis-pd01a.pdf
Date
PREV: LG 50PK750-UF (CHASSIS:PU02A) Service Manual

LG 50PK750-ZA / 50PK750N-ZA (CHASSIS:PD01A) Service Manual ▷ View 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.
HDMI
+5V_ST
GND
CK-_HDMI3
DDC_SDA_1
+5V_ST
DDC_SCL_3
D0-_HDMI2
D0+_HDMI3
IC603
AT24C02BN-10SU-1.8
SIDE_H
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
DDC_SDA_3
CK+_HDMI2
GND
GND
DDC_SDA_2
D1+_HDMI1
D2-_HDMI2
IC602
AT24C02BN-10SU-1.8
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
D603
ENKMC2838-T112
A
1
C
A
2
5V_HDMI1
D1+_HDMI3
D602
ENKMC2838-T112
A
1
C
A
2
HPD3
HPD2
5V_HDMI2
D1+_HDMI2
D0+_HDMI1
5V_HDMI2
D1-_HDMI3
DDC_SDA_1
DDC_SCL_3
DDC_SCL_1
D1-_HDMI2
IC600
AT24C02BN-10SU-1.8
REAR_H
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
D0+_HDMI2
GND
D1-_HDMI1
HPD1
D2-_HDMI3
CK-_HDMI1
D2+_HDMI1
+5V_ST
GND
D2+_HDMI3
CEC_REMOTE
CK-_HDMI2
D0-_HDMI3
DDC_SDA_3
D0-_HDMI1
CEC_REMOTE
5V_HDMI3
DDC_SCL_2
DDC_SCL_2
CK+_HDMI3
D2-_HDMI1
DDC_SCL_1
CEC_REMOTE
D600
ENKMC2838-T112
A
1
C
A
2
DDC_SDA_2
5V_HDMI1
D2+_HDMI2
5V_HDMI3
CK+_HDMI1
+3.3V_HDMI_ST
BSS83
Q600
READY
S
B
D
G
HDMI_CEC
CEC_REMOTE
D605
MMBD301LT1G
30V
D604
READY
R632
330K
R646
18K
R648
18K
R629
18K
R650
18K
R626
18K
R649
18K
JK600
EAG59023302
REAR_H
14
13
5
D1_GND
20
20
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
R659
0
R636
0
R613
0
R624
0
READY
R612
0
R642
22
R644
22
R645
22
R643
22
R623
22
R621
22
R615
1K
READY
R631
1K
READY
R638
1K
READY
R601
1K
READY
R600
1K
READY
R616
1K
READY
R637
27K
READY
C608
0.1uF
C607
0.1uF
C601
0.1uF
16V
C603
0.1uF
C600
0.1uF
16V
C605
0.1uF
16V
JK601
EAG59023301
14
13
5
D1_GND
20
20
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
JK603
EAG42463001
SIDE_H
14
13
5
D1_GND
20
JACK_GND
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
5V_HDMI2
R660
10K
R661
33K
5V_HDMI_2
R662
10K
R663
33K
5V_HDMI3
5V_HDMI_3
R664
10K
R665
33K
5V_HDMI1
5V_HDMI_1
UI_HW_PORT3
UI_HW_PORT1
UI_HW_PORT2
HDMI
5      10
MSD3368EV Platform
SIDE HDMI
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.
AUDIO
@netLa
@netLa
SPK_R-
SPK_L-
SPK_L+
SPK_R+
SC1_Rout
SC1_Lout
SC2_Lout
SCART1_MUTE
SCART2_MUTE
SC2_Rout
TV_LOUT
DTV/MNT_ROUT
DTV/MNT_LOUT
TV_ROUT
P_17V
IC702
LM324D
3
3
2
2
4
4
1
1
6
6
5
5
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
2SC3052
Q703
2SC3052
Q704
C762
0.1uF
TV_LOUT
TV_ROUT
Q706
RT1P141C-T112
1
2
3
DTV/MNT_LOUT
C773
0.1uF
Q709
RT1P141C-T112
1
2
3
2SC3052
Q710
DTV/MNT_ROUT
2SC3052
Q711
R711
33K
READY
AMP_MUTE
Q701
2SC3052
E
B
C
+3.3V
R787
5.6K
R780
5.6K
R786
5.6K
R781
5.6K
C769
33pF
C771
33pF
C770
33pF
C772
33pF
C779
10uF
16V
C776
10uF
16V
C777
10uF
16V
C778
10uF
16V
R710
0
R791
10K
R784
10K
R789
10K
R783
10K
R716
10K
R725
10K
R797
2K
1/16W
5%
R794
2K
1/16W
5%
R729
2K
R728
2K
R701
2K
1/16W
5%
R726
2K
R798
2K
1/16W
5%
R727
2K
R782
33K
R785
33K
R790
33K
R779
33K
C701
0.033uF
50V
C702
4700pF
SPK_L+
R702
22
C
7
0
3
1
u
F
+3.3V_AVDD_AMP
AUDIO_MASTER_CLK
C704
0.1uF
+3.3V_DVDD
C706
0.1uF
C707
0.1uF
R703
22
SDA1
AVSS
AC_DET
C
7
0
8
1
u
F
R704
3.3
R705
3.3
AMP_RST
R706
22
C709
1000pF
C710
0.1uF
R707
22K
P_17V
C711
10uF 16V
SCL1
C712
1000pF
50V
R708
22
P_17V
C713
4700pF
R709
3.3
C714
0.1uF
+3.3V_AVDD_AMP
C715
0.01uF
R712
1K
C717
0.1uF
C718
0.1uF
R713
200
1%
C719
0.1uF
+3.3V_DVDD
C720
0.047uF
R714
18K
R715
470
SPK_L-
C722
4.7uF
10V
C723
10uF 16V
C725
0.01uF
C726
0.1uF
AVSS
C727
0.01uF
L702
120-ohm
R717
0
C728
0.1uF
C729
0.033uF
50V
C730
2200pF
C732
0.01uF
SPK_R-
MS_SCK
AVSS
C733
0.033uF
50V
C734
0.01uF
MS_LRCK
+3.3V
C735
0.1uF
C736
0.047uF
R718
470
R719
3.3
C737
0.1uF
SPK_R+
C738
0.033uF
50V
L701
120-ohm
MS_LRCH
IC701
TAS5709PHPR
1
OUT_A
2
PVDD_A_1
3
PVDD_A_2
4
BST_A
5
GVDD_OUT_1
6
SSTIMER
7
OC_ADJ
8
NC
9
AVSS
10
PLL_FLTM
11
PLL_FLTP
12
VR_ANA
13
AVDD
14
TESTOUT
15
MCLK
16
OSC_RES
17
DVSS_1
18
VR_DIG
19
PDN
20
LRCLK
21
SCLK
22
SDIN
23
SDA
24
SCL
25
RESET
26
STEST
27
DVDD
28
DVSS_2
29
GND
30
AGND
31
VREG
32
GVDD_OUT_2
33
BST_D
34
PVDD_D_1
35
PVDD_D_2
36
OUT_D
37
PGND_CD_1
38
PGND_CD_2
39
OUT_C
40
PVDD_C_1
41
PVDD_C_2
42
BST_C
43
BST_B
44
PVDD_B_1
45
PVDD_B_2
46
OUT_B
47
PGND_AB_1
48
PGND_AB_2
AVSS
P_17V
C739
0.68uF
C740
0.68uF
C721
330uF
25V
C775
330uF
25V
P700
WAFER-ANGLE
1
2
3
4
C774
0.1uF
50V
L705
AD-9060
T-AD_9060
DEV
2S
1S
1F
2F
L704
AD-9060
T-AD_9060
DEV
2S
1S
1F
2F
AUDIO
6      10
MSD3368EV Platform
Audio Out Amp
TV_L/ROUT
MUTE Ctrl
MNT/DTV OUT
Audio Amp
Separate DGND AND AVSS
This parts are Located 
on AVSS area.
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.
POWER
+5V_ST
+3.3V_ST
+3.3V_AVDD_MPLL
+5V
+3.3V_AVDD
+3.3V_HDMI_ST
+3.3V_CI
+3.3V_ST
+5V
+3.3V_AVDD
+3.3V
+3.3V
+1.8V_DDR
MODULE_ON
C818
0.1uF
50V
P_17V
AC_DET
RL_ON/PWR_ONOFF
+5V_GENERAL
Q806
SI4925BDY
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
RL_ON/PWR_ONOFF
R835
560
R828
120K
READY
+5V
Q803
2SC3052
E
B
C
+5V_ST
+5V_CI
P_+5V
GND
IC804
AZ1085S-3.3TR/E1
1
ADJ/GND
2
OUTPUT
3
INPUT
GND
+1.8V_TU
+3.3V_TU
+5V_ST
+5V_ST
+5V_ST
L800
MLB-201209-0120P-N2
L801
MLB-201209-0120P-N2
L805
L806
MLB-201209-0120P-N2
L808
L814
MLB-201209-0120P-N2
L817
L818
C892
10uF
6.3V
READY
C850
10uF
6.3V
C891
10uF
6.3V
READY
C880
10uF
6.3V
READY
C810
10uF
READY
C878
10uF
6.3V
C888
10uF
6.3V
C893
10uF
6.3V
C896
10uF
6.3V
READY
R858
0
R859
0
C825
100uF
16V
IC800
AZ1085S-ADJTR/E1
1
ADJ/GND
2
OUTPUT
3
INPUT
C830
10nF
50V
+5V_GENERAL
R825
620K
1%
+1.26V_VDDC
R830
10
1%
P_+5V
C894
10uF
6.3V
C843
10uF
6.3V
C839
10uF
6.3V
READY
+5V_ST
R824
360K
1%
R860
33
1%
L813
3.6uH
NR8040T3R6N
IC801
AP1117E33G-13 
2
OUT
3
IN
1
ADJ/GND
IC803
AP1117E18G-13 
2
OUT
3
IN
1
ADJ/GND
R866
0
R865
0
R864
0
R862
0
C857
220uF
16V
C858
220uF
16V
C859
47uF
16V
GND
GND
IC805
MP2212DN
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
C835
100uF
16V
C842
100uF
16V
C841
100uF
16V
C897
220uF
16V
R802
0
1/4W
C836
1uF
10V
L802
MLB-201209-0120P-N2
IC802
AP2121N-3.3TRE1 
1
GND
2
VOUT
3
VIN
L821
MLB-201209-0120P-N2
TP1451
C889
10uF
6.3V
C822
10uF
6.3V
READY
C870
100pF
50V
READY
R861
75
1%
R803
100
R801
100
R829
10K
R834
10K
R856
10K
READY
R831
10K
R827
10K
READY
R838
10K
READY
R837
2K
C831
0.1uF
C808
0.1uF
16V
C803
0.1uF
16V
C885
0.1uF
16V
C899
0.1uF
16V
READY
0.1uF
C856
C807
0.1uF
16V
C812
0.1uF
16V
C826
0.1uF
16V
C852
0.1uF
16V
C866
0.1uF
16V
C824
0.1uF
16V
C865
0.1uF
16V
C811
0.1uF
16V
C877
0.1uF
16V
C844
0.1uF
C816
0.1uF
16V
C815
0.1uF
16V
C854
0.1uF
C801
0.1uF
16V
C834
0.1uF
C883
0.1uF
16V
C805
0.1uF
16V
C827
0.1uF
16V
READY
C869
0.1uF
16V
C814
0.1uF
16V
C809
0.1uF
16V
READY
PSU_ERR_DET
C817
100uF
25V
READY
P800
SMAW200-H18S1
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
15
10
5
19
C828
68uF
10V
C829
10uF
16V
C833
10uF
16V
C867
10uF
16V
C898
10uF
C838
10uF
C806
10uF
16V
C813
10uF
C862
10uF
C864
10uF
16V
C837
10uF
16V
C802
10uF
16V
P_+5V
C890
10uF
6.3V
READY
C820
0.1uF
16V
C804
470uF
16V
C800
10uF
16V
Stand-by +3.3V
+3.3V_AVDD
320 mA
40 mA
650 mA
POWER
50 mA
+1.8V_DDR
450 mA
7      10
MSD3368EV Platform
+5V
$0.122
MAX 3A
S6 core 1.26 volt
465 mA @85% efficiency
Replaced Part
1600 mA
R2 = R1/(Vout/0.8-1)
C OUT
Placed on SMD-TOP
R1
MAX 3A
R2
F
i
b
e
r
 
O
p
t
i
c
U
S
B
 
D
O
W
N
 
S
T
R
E
A
M
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.
GND
COMP_Pr
COMP_LIN
COMP_DET
COMP_Pb
COMP_Y
R957
0
+3.3V_AVDD
COMP_RIN
GND
4.7pF
C910
READY
+3.3V_AVDD
SIDE_CVBS_DET
SIDE_CVBS_IN
SPDIF_OUT
D934
READY
C926
0.1uF
50V
JK904
JST1223-001
1
GND
2
VCC
3
VINPUT
4
FIX_POLE
+5V_GENERAL
SIDE_LIN
SIDE_RIN
P_+5V
USB_DP
USB_DM
REC_8
Q901
2SC3052
E
B
C
Q902
2SC3052
E
B
C
SC_RE2
P_17V
Q900
2SC3052
E
B
C
SC_RE1
SC1_CVBS_IN
SC1_FB
TV_ROUT
0
R915
TV_LOUT
SC1_ID
SC1_G
SC1_R
+3.3V_AVDD
C904
47pF
50V
SC1_B
R901
470K
R912
470K
C903
330pF
50V
C902
330pF
50V
C900
OPT
SC1_LIN
C901
OPT
R900
470K
C908
220pF
50V
READY
SC1_RIN
REC_8
C920
330pF
50V
DTV/MNT_LOUT
R927
470K
C922
47pF
50V
C924
220pF
50V
READY
R926
470K
0
R945
R929
470K
DTV/MNT_ROUT
DTV/MNT_VOUT
C919
330pF
50V
SC2_CVBS_IN
SC2_RIN
C915
OPT
SC2_ID
SC2_LIN
+3.3V_AVDD
C914
OPT
FE_VOUT
SC1_DET
SC2_DET
R951
470K
R950
470K
C916
47pF
50V
R
9
2
3
4
7
0
K
R
9
2
2
4
7
0
K
+5V_GENERAL
USB_CTL
USB_OCD
D935
KDS184
A2
C
A1
R980
470K
READY
R976
470K
READY
R978
470K
READY
R979
470K
READY
R981
330
READY
Q905
2SC3052
READY
E
B
C
Q903
2SA1504S
E
B
C
R989
330
READY
C928
10uF
16V
P_17V
Q904
2SC3052
E
B
C
C907
100uF
16V
D908
5.6V
D907
5.6V
D900
5.6V
READY
D905
5.6V
READY
D926
5.6V
READY
D920
5.6V
READY
D927
5.6V
D928
5.6V
D913
D914
D922
D921
D911
D910
D909 30V
D912
D904
30V
READY
D903
30V
READY
D902
30V
READY
D901
30V
READY
D906
30V
READY
D915
30V
READY
D916
30V
READY
D917
30V
READY
D918
30V
READY
D919
30V
D929
30V
READY
D930
30V
READY
D931
30V
D932
5.6V
CDS3C05HDMI1
D933
5.6V
CDS3C05HDMI1
+3.3V_CI
R916
62K
R917
11K
R946
62K
R947
11K
C932
6800pF
50V
C929
6800pF
50V
C930
6800pF
50V
C931
6800pF
50V
TP1466
TP1467
L900
MLB-201209-0120P-N2
C933
0.1uF
50V
R969
3K
JK901
PPJ234-01
5A
[GN]O-SPRING
6A
[GN]E-LUG
4A
[GN]CONTACT
7B
[BL]E-LUG-S
5B
[BL]O-SPRING
7C
[RD]E-LUG-S
5C
[RD]O-SPRING_1
5D
[WH]O-SPRING
4E
[RD]CONTACT
5E
[RD]O-SPRING_2
6E
[RD]E-LUG
IC900
AP2181SG-XX
DEV
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
IC901
NL17SZ00DFT2G
READY
3
GND
2
B
4
Y
1
A
5
VCC
R987
0
R997
0
R938
0
R905
0
R914
22
R902
75
R958
75
1%
R959
75
1%
R908
75
R907
75
R956
75
1%
R904
75
R913
75
R937
75
R939
75
R928
75
R903
75
R970
100
R998
100
READY
R990
470
R963
10K
R991
10K
R941
10K
R954
10K
R940
10K
R930
10K
R911
10K
R992
10K
R952 10K
R918
10K
R933
10K
R906
10K
R968
10K
R949
10K
R953
10K
R931
12K
R942
12K
R972
12K
R909
12K
R910
12K
R961
12K
R932
12K
R943
12K
R960
12K
R985
15K
R955
1K
R919
1K
R995
1K
R948
1K
R967
1K
R966
1K
R993
1K
R994
1K
R973
1K
R964
1K
READY
R996
1K
R965
4.7K
C909
0.1uF
16V
C923
0.1uF
16V
C927
0.1uF
C911
0.1uF
16V
C906
1000pF
50V
C905
1000pF
50V
C913
100pF
C912
100pF
JK902
PPJ235-01
NON_20TOOL
4A
[YL]O-SPRING
5A
[YL]E-LUG
3A
[YL]CONTACT
4B
[WH]O-SPRING
3C
[RD]CONTACT
4C
[RD]O-SPRING
5C
[RD]E-LUG
R988
120
R984
390
R982
47K
JK905
KJA-UB-4-0004
1
2
3
4
5
C934
470uF
16V
L901
R999
10K
IC902
NL17SZ08DFT2G
READY
3
2
4
1
5
AC_DET
R944
0
JK903
DEV
1
R_OUT
2
R_IN
3
L_OUT
4
GND
5
GND
6
L_IN
7
.
8
SC2_ID
9
.
10
.
11
G_OUT
12
D2B_OUT
13
R_GND
14
RGB_GND
15
R_OUT
16
RGB_IO
17
SYNC_GND1
18
SYNC_GND2
19
SYNC_OUT
20
SYNC_IN
21
COM_GND
23
SHIELD
22
AV_DET
JK900
DEV
1
R_OUT
2
R_IN
3
L_OUT
4
GND
5
GND
6
LIN
7
B
8
SC_ID
9
.
10
.
11
G_OUT
12
D2B_OUT
13
R_GND
14
RGB_GND
15
R_OUT
16
RGB_IO
17
SYNC_GND1
18
SYNC_GND2
19
SYNC_OUT
20
SYNC_IN
21
COM_GND
23
SHIELD
22
AV_DET
C921
47uF
25V
C917
47uF
25V
JACK
10
8
MSD3368EV Platform
Half SCART 2
Full SCART 1
Pr
Pb
R
COMPONENT
L
Y
SIDE CVBS
SPDIF OPTIC JACK
USB
[SCART2 PIN 8]
Page of 35
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