LG Flatron W1943SB Service Manual page 36

H_Sy nc
V_Sy nc
R110 100R 1/16W 5%
DSUB_SCL 15
5 DDC_SCL
14
13
R113 100R 1/16W 5%
DSUB_SDA 12
5 DDC_SDA
11
U102
1
I/O1 I/O4
2
GND VDD
VGA_B+ 3
I/O2 I/O3
AZC199-04S
U103
DSUB_SDA 1
I/O1 I/O4
2
GND VDD
DSUB_SCL 3
I/O2 I/O3
AZC199-04S
R101 0402->0603
R101 0R05 1/10W 5% R102
R103
C102 R106 C103
R105 22pF 33pF
2K2 1/16W 5% 2K2 1/16W 5%
DSUB_5V
10
5 VGA_PLUG
9 DSUB_5V
4
8 VGA_B-
3 VGA_B+
7 VGA_G- ZD103
2 VGA_G+ RLZ5.6B
6 VGA_R-
1 VGA_R+
CN101
DB15
D-SUB NC pin connect to GND
ESD_5V
6 VGA_G+
5 ESD_5V Ext. edid
4 VGA_R+
C114
NC
Inte. edid
f or LG
only
6 H_Sy nc
5 ESD_5V
4 V_Sy nc
C115
NC
100R 1/16W 5%
HSIN 5
100R 1/16W 5%
VSIN 5
R118 10K 1/16W 5%
VGA_DET 5
ZD104
RLZ5.6B
U101:
AT24C02BN-SH-T
C116: 0.22uf
R119: 4.7K
R122: 0 ohm
U101: NC
C116: NC
R119: NC
D102: NC
R122: NC
Change net to DDC_SCL,DDC_SDA
- 36 -
FB102
VGA_B+ 1 2 R104
BEAD 100R 1/16W 5%
R107 C117
5PF50V
75R 1/16W 5%
VGA_B- R108
100R 1/16W 5%
FB103
VGA_G+ 1 2 R111
BEAD 100R 1/16W 5%
R112 C118
5PF50V
75R 1/16W 5%
VGA_G- R114
100R 1/16W 5%
FB101
VGA_R+ 1 2 R115
BEAD 100R 1/16W 5%
R116 C119
5PF50V
75R 1/16W 5%
VGA_R- R117
100R 1/16W 5%
DSUB_5V
R122
NC/0R05 1/16W
+5V
5,6,7 +5V
D101
BAV70
ESD_5V
R119
NC
R120 R121
U101
4K7 1/16W 5%
8
VCC
4K7 1/16W 5% 7
WP
DDC_SCL 6
SCL
DDC_SDA 5
SDA VSS
5 DDC_WP
NC/AT24C02BN-SH-T
C101
BIN+ 5
0.047uF
C105
BIN- 5
0.047uF
R109 C106
SOGI 5
390R 1/16W 5% 1000pF
C107
GIN+ 5
0.047uF
C109
GIN- 5
0.047uF
C110
RIN+ 5
0.047uF
C113
RIN- 5
0.047uF
C116
1 NC
A0
2
A1
3
A2
4