50PQ3500-ZB (CHASSIS:PD91A) - LG TV Service Manual (repair manual). Page 41

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Fiber Optic
USB DOWN STREAM
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
R955
1K
COMP_Pr
COMP_LIN
COMP_DET
COMP_Pb
R952 10K
R956
75
1%
R959
75
1%
R958
75
1%
COMP_Y
R957
0
+3.3V_AVDD
COMP_RIN
GND
4.7pF
C910
READY
R973
1K
R963
10K
+3.3V_AVDD
C911
0.1uF
16V
+3.3V_AVDD
SIDE_CVBS_DET
R937
75
SIDE_CVBS_IN
R938
0
SPDIF_OUT
D934
READY
C926
0.1uF
50V
R964
1K
JK904
JST1223-001
1
GND
2
VCC
3
VINPUT
4
FIX_POLE
+5V_GENERAL
R936
0
R925
75
1%
SIDE_C_IN
SIDE_Y_IN
R924
75
1%
R935
0
SIDE_S_DET
SIDE_LIN
C913
100pF
C912
100pF
SIDE_RIN
+5V
USB_DP
USB_DM
REC_8
Q901
2SC3052
E
B
C
Q902
2SC3052
E
B
C
SC_RE2
P_12V
Q900
2SC3052
E
B
C
SC_RE1
R919
1K
SC1_CVBS_IN
SC1_FB
TV_ROUT
0
R915
R913
75
R918
10K
R904
75
R914
22
R909
12K
R906
10K
TV_LOUT
R910
12K
R905
0
SC1_ID
SC1_G
SC1_R
R903
75
+3.3V_AVDD
R911
10K
C904
47pF
50V
R907
75
SC1_B
R902
75
R901
470K
R912
470K
C903
330pF
50V
C902
330pF
50V
C900
OPT
SC1_LIN
C901
OPT
R900
470K
C908
220pF
50V
READY
C909
0.1uF
16V
SC1_RIN
REC_8
C920
330pF
50V
R940
10K
DTV/MNT_LOUT
R943
12K
R927
470K
C922
47pF
50V
R949
10K
C923
0.1uF
16V
C924
220pF
50V
READY
R926
470K
R948
1K
0
R945
R929
470K
DTV/MNT_ROUT
DTV/MNT_VOUT
C919
330pF
50V
R939
75
SC2_CVBS_IN
R941
10K
SC2_RIN
C915
OPT
SC2_ID
SC2_LIN
+3.3V_AVDD
R942
12K
C914
OPT
R944
0
FE_VOUT
SC1_DET
SC2_DET
C906
1000pF
50V
C905
1000pF
50V
R951
470K
R950
470K
R953
10K
R954
10K
R961
12K
R960
12K
C918
47pF
50V
C917
47pF
50V
R962
10K
C916
47pF
50V
R923
470K
R922
470K
R930
10K
R933
10K
R932
12K
R931
12K
+5V_GENERAL
R966
1K
R967
1K
R969
0
R972
12K
R975
180
C927
0.1uF
R970
100
JK906
PSJ015-02
5
4A
4B
4C
4D
3
7
JK902
PPJ218-01
5C
[RD]CONTACT
2C
[RD]U_CAN
4C
[RD]O_SPRING
2B
[WH]U_CAN
3B
[WH]C_LUG
2A
[YL]U_CAN
5A
[YL]CONTACT
4A
[YL]O_SPRING
USB_CTL
USB_OCD
D935
KDS184
A2
C
A1
R980
470K
READY
R976
470K
READY
R978
470K
READY
R979
470K
READY
R928
75
R908
75
R981
330
READY
Q905
2SC3052
READY
E
B
C
Q903
2SA1504S
E
B
C
R989
330
READY
C928
10uF
16V
P_12V
Q904
2SC3052
E
B
C
JK905
KJA-UB-4-0004
1
2
3
4
5
JK901
RCA-517HA-00A-01 
4A
[GN]CONTACT
2A
[GN]1P_CAN
3A
[GN]O_SPRING
2B
[BL]1P_CAN
5B
[BL]C_LUG_L
2C
[RD]1P_CAN1
5C
[RD]C_LUG_L
2D
[WH]1P_CAN
5D
[WH]C_LUG_L
2E
[RD]1P_CAN2
4E
[RD]CONTACT
3E
[RD]O_SPRING
C907
100uF
16V
C921
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
D923
D919
30V
D924
D925
D929
30V
READY
D930
30V
READY
D931
30V
D932
5.6V
CDS3C05HDMI1
D933
5.6V
CDS3C05HDMI1
R934
0
R992
10K
R991
10K
+3.3V_CI
R968
10K
R965
4.7K
R916
62K
R917
11K
R946
62K
R947
11K
R982
47K
R985
15K
R990
470
R987
0
JK903
1
R_OUT
2
R_IN
3
L_OUT
4
GND
5
GND
6
L_IN
7
.
8
SC2_ID
9
.
10
.
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
23
23
22
22
JK900
1
R_OUT
2
R_IN
3
L_OUT
4
GND
5
GND
6
LIN
7
B
8
SC_ID
9
.
10
.
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
23
23
22
22
IC900
MIC2019YM6
3
ENABLE
2
GND
4
FAULT
1
VIN
6
VOUT
5
ILIMIT
R996
1K
R993
1K
C932
6800pF
50V
C929
6800pF
50V
C930
6800pF
50V
C931
6800pF
50V
R994
1K
R995
1K
TP1466
TP1467
R984
390
R988
120
L900
MLB-201209-0120P-N2
C933
0.1uF
50V
C934
470uF
16V
JACK
10
8
MSD3368EV Platform
Half SCART 2
Full SCART 1
Pr
Pb
R
COMPONENT
L
Y
SIDE CVBS & S_VIDEO
SPDIF OPTIC JACK
SWITCH ADDED
USB
[SCART2 PIN 8]
Display
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