LG 42lk530 Service Manual page 35

RGB/ PC AUDIO/ SPDIF/ EARPHONE/ RS232C
RGB PC
+5V_Normal
IC3801
74F08D
D0A VCC
1 14
R3856 22
D0B D3B
DSUB_VSYNC 2 13
R3857 22 Q0 D3A
3 12
DSUB_HSYNC
R3850 0 D1A Q3
4 11
OPT
R3851 0 D1B D2B R3852 0
5 10
OPT OPT
Q1 D2A R3853 0
6 9
OPT
GND Q2
7 8
OPT
R3802
10K
OPT
R3801
10K
DSUB_B+
DSUB_G+
DSUB_R+
PC AUDIO
JK3801
PEJ027-01
E_SPRING
3
T_TERMINAL1
6A
B_TERMINAL1 ESD_COMMON
7A
D3802
R_SPRING
4
AMOTECH R3804
470K
5.6V
T_SPRING
5
B_TERMINAL2
7B ESD_COMMON
D3801
T_TERMINAL2
6B
AMOTECH R3803
5.6V
470K
SPDIF OUT
R3805
2.7K
R3861
0
SPDIF_OUT
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.
D3810
KDS184
A2
C
A1
R3809 R3810 R3813
IC3802
10K
2.7K 2.7K
AT24C02BN-SH-T
A0 VCC
1 8
A1 WP
2 7
22
A2 SCL R3812
3 6
22 R3811
GND SDA
4 5
C3812 C3813
18pF 18pF
50V 50V
D3804
C3810
30V 22pF
50V
D3809
Closed to JACK
D3805
30V C3811
5.6V
22pF OPT
50V
L3806
BLM15BD121SN1
ESD_COMMON
C3807 D3808
R3807
EU_ESD 47pF 30V
75
5.6V
50V
D3808-*1
L3807
BLM15BD121SN1
ESD_COMMON
R3806 C3808
D3806
EU_ESD
75 47pF 30V
5.6V
50V
D3806-*1
L3808
BLM15BD121SN1
ESD_COMMON
C3809 D3807
EU_ESD R3808
30V
47pF
5.6V
75
50V
D3807-*1
R3854
22
PC_R_IN
C3803 C3806
560pF 560pF
50V 50V
R3855
22
PC_L_IN
C3802 C3805
560pF 560pF
50V 50V
+3.3V_Normal
GND
VCC
VINPUT
C3804
D3803
0.1uF
30V
16V
OPT
+5V_Normal
+3.3V_Normal
R3816
2.7K
R3858
1K
HP_DET
EDID_WP
RGB_DDC_SCL
RGB_DDC_SDA
EARPHON JACK
EARPHONE AMP
D3811
5.6V
OPT
HP_LOUT_N
+3.3V_Normal
HP_LOUT_P
R3814
10K
HP_ROUT_N
DSUB_DET
1K R3815
HP_ROUT_P
EU_ESD
D3812
D3812-*1
5.6V 5.6V
ESD_COMMON
RS232C
C1+
0.1uF C3814
V+
0.1uF C3815
C1-
C2+
0.1uF C3816
C2-
V-
0.1uF C3817
DOUT2
RIN2
D3804,D3805,D3806
D3807,D3808,D3813
D3814
D3810
JK3803
KJA-PH-0-0177
Q3801
GND 5
L 4
HP_LOUT
DETECT 3
R 1
HP_ROUT
+3.3V_Normal
L3803
BLM18PG121SN1D
C3824 C3826
10uF 0.1uF
10V 16V
C3823
Close to the IC
1uF
10V
C3827
C3818
16 15 14 13 2.2uF
1uF
10V
INL- HPVDD
10V
1 12
C3819
1uF
INL+ CPP
10V
2 11
C3820 IC3804
C3828
1uF TPA6132A2 2.2uF
INR+ PGND
10V 10V
3 10
C3821
1uF
10V INR- CPN
4 EAN60724701 9
5 6 7 8
C3825
2.2uF
10V
IR_OUT
R3860
100
+3.5V_ST
R3859
100
ESD_COMMON
IC3803
C3822 D3813
MAX3232CDR 0.1uF
30V
VCC
1 16
D3813-*1
+3.5V_ST EU_ESD
GND 5.6V
2 15
DOUT1 R3830 R3831
3 14
4.7K
4.7K
OPT
OPT
RIN1
4 13
R3821
ROUT1 0
5 12
R3822
DIN1
0
6 11
DIN2 R3823
7 10 0
ROUT2 R3824
8 9 0
EAN41348201
HIGH : SELECT X1, Y1, SELECT MAIN TX/RX
LOW : SELECT X0, Y0, SELECT MICOM TX/RX
BCM35230
LV7 COMM JACK
DUAL COMPONENT
1ST : EAH39491601, 2ND : EAH33945901
1ST : 0DD184009AA, 2ND : 0DSIH00028A
1ST : 0TRIY80001A, 2ND : 0TR387500AA
L3804
BG2012B080TF
HP_LOUT
C3829
0.22uF
10V
+3.3V_Normal
R3825
100K
OPT
R3826 OPT
4.7K R3827
0
C
R3828
Q3801 B 1K
SIDE_HP_MUTE
2SC3052
E
L3805
BG2012B080TF
HP_ROUT
C3830
0.22uF
10V
10
5
9
0 R3829
4
IR_OUT
8
JP3809
3
7
JP3808
2
ESD_COMMON
D3814
6
30V
1
SPG09-DB-009
D3814-*1
P3802
EU_ESD
5.6V
BCM_RX
NEC_RXD
BCM_TX
NEC_TXD
38 50