Samsung 203B - SyncMaster - 20" LCD Monitor Service Manual page 54

9 Schematic Diagrams
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9-1 Schematic Diagrams(1)
CN102
C118 16V C110
100nF
MGND1
1 Rx2
9
Rx1
17
Rx0
2
Rx2+
10 Rx1+
18
Rx0+
3
11
DGND
19
4
12
20
D108
5
MMBD4148SE
13
21
DEFAULT_NET_TYPE
6
DVI_SCL
14
DVI+5V
22
7
DVI_SDA
15
CHK_DVI
23
RxC+
8
16 HPD
24
RxC
MGND2
DGND
R110
D109
510ohm
UDZS5.6B-TE-17
1/10W
DGND
1
D232
MMQA5V6T3
AGND
1
AGND
1
1
1
DEFAULT_NET_TYPE DEFAULT_NET_TYPE
1
DEFAULT_NET_TYPE DEFAULT_NET_TYPE
+3.3V_ESD
MGND2
R-
6
1
11
G-
7
2
12
DEFAULT_NET_TYPE B-
D125
8 AGND
MMBD4148SE
3 1
13
9
1
4
DEFAULT_NET_TYPE
14
10 1
5
15
MGND1
AGND
B- G- R-
B-
16V C119 16V C111 16V C112 16V C113 16V C114 16V C115 16V C116 16V C117
100nF 100nF 100nF 100nF 100nF 100nF 100nF 100nF
D101 D110 D102 D103 D104 D105 D106 D107
MMBD4148SE MMBD4148SE MMBD4148SE MMBD4148SE MMBD4148SE MMBD4148SE MMBD4148SE MMBD4148SE
+5V_IN
R108
10Kohm
R109
1/10W
2Kohm
C106
D220
100nF
UDZS5.6B-TE-17
16V
DGND
AGND
R220
R221
10Kohm 10Kohm
IC202
1/10W 1/10W AT24C02N-10SC
C220
SDA VSS
R222 100ohm 5 4
100nF
SCL E2
100ohm
R223 6 3 16V
MODE,/WC
7 E1 2
VCC E0
8 1
1
TP1527
1
TP1526
DGND
D221
DGND
MMQA5V6T3
DEFAULT_NET_TYPE
1 XREF
EDID_PROTECT_D
1 R224 22ohm
XREF
SCL_DDC_D
1 R225 22ohm
XREF
SDA_DDC_D
AGND
+5V_IN
Q201
KSC1623-Y
E
B EDID_PROTECT
XREF
C
D230
UDZS5.6B-TE-17
XREF
EDID_PROTECT_D
R230
10Kohm
D231 1/10W
UDZS5.6B-TE-17
TP1528
1
IC203
R231 R232
AT24C02N-10SC
C230
10Kohm 10Kohm
100nF 1 8
1/10W 1/10W
E0 VCC
16V 2 7 1
E1 R233 100ohm
MODE,/WC
3 6 1
E2 SCL
4 5 1 XREF
TP1529
VSS SDA
1 XREF
R234 100ohm
+5V_IN
AGND
AGND
100ohm
R125 R127
10Kohm
R126 100ohm
1/10W
R128 2Kohm
XREF
R129 22ohm
XREF
R130 22ohm XREF
R131
R132
2.2Kohm C121 C122
2.2Kohm
1/10W 1/10W 15pF 22pF
50V
C123 50V
100nF
16V
DELETE
DELETE
AGND AGND
AGND AGND AGND
R133
D126
D127
0ohm
R134
MMBD4148SE MMBD4148SE
47ohm 1/10W
DEFAULT_NET_TYPE
1/10W
C140 R139
8pF 0ohm
50V
1/10W
R135
R136 0ohm
47ohm 1/10W
1/10W
C141 R140
8pF 0ohm
50V
1/10W
DEFAULT_NET_TYPE
R137
0ohm
R138
47ohm 1/10W
DEFAULT_NET_TYPE
1/10W
C142 R141
8pF 0ohm
50V
1/10W
DEFAULT_NET_TYPE
G- R-
+14V_INV
16V
100nF
+3.3V_ESD
C103 C105
1nF 100nF CN600
50V 16V
BL_ADJ_PWM
1
MGND1
2
3
DGND
4
D100
5
MMBD4148SE DGND
6
R100 22ohm
7
Rx2+
XREF 8
R101 22ohm
9
Rx2-
MGND2
XREF
R102 22ohm
+5V
Rx1+
XREF
R103
22ohm
Rx1- BL_ADJ_ANALOG
XREF
R104 22ohm
BL_EN
Rx0+
XREF
R105
22ohm
Rx0-
XREF
R106 22ohm
RxC+
XREF
R107 22ohm
RxC-
XREF
203B only
XREF
CHK_DVI
C314
100uF
25V
+5V_IN +3.3V_VDD
DDC_SCL_VGA
IC600
1
DDC_SDA_VGA
AP1084K33A
1
1 3
IN OUT
GND
2
C610 C608
CHK_DSUB 100nF 100uF
16V 16V
VSYNC
HSYNC
+5V_PANEL
FT601
1 2
B
A
BEAD-SMD,60ohm
C126
10nF
BLUE+ C644
XREF 100uF
C129 16V
10nF
BLUE-
XREF
C127
10nF
GREEN+
XREF
C130
10nF +3.3V_VDD +1.8V_VDD
GREEN-
XREF
C128
10nF
XREF
RED+ IC602
C131 NCP1117DT18T5G
1
10nF 3 2
XREF
RED- VIN VOUT
ADJ
C609
100uF
16V
IP Board connection
+13V_IN +5V_IN
Mendell only
BD305,BD306
Mendell ANION OPTION 203B only
BD304 BD306
BD303 BD301,BD302,BD303,BD304
C601
BD600 C603 C602
10uF
10uF
100nF
10V
10V
BL_ADJ_PWM
XREF
U648
U649
BD305
BD302
BL_ADJ_ANALOG
XREF
XREF BL_EN
R604
R610 C607 100ohm
1Kohm 470nF
1/10W
1/10W 16V
2 1
IC302
BD301
C317
MP1583DN
47nF
1 8 25V
BS SS
2 MGND1 7
IN EN
3 6
SW COMP
4 5
GND FB
+3.3V_VDD +3.3V_ESD +3.3V_DVDD
TP1545
BD601
SUPLVAL Close to respective power pins
1 -
1
C614 C653 C616 C617 C618 C619 C620
100nF 100nF 100nF 100nF 100nF 100nF
10uF
DGND 16V 16V 16V 16V 16V 16V
10V
MLCC MLCC
+3.3V_AVDD
TP1544
BD602
SUPLVAL Close to respective power pins
1
C621 C622 C623 C624 C652
10uF 100nF 100nF 100nF 100nF
10V 16V 16V 16V 16V
AGND
MLCC MLCC
+3.3VA_LV
+3.3V_VDD +3.3VA_RPLL
TP1543
BD603
SUPLVAL
C611 BD604
100nF 1
16V
C651
100nF
C625
16V
100nF
16V
AGND
AGND
+1.8V_VDD
+1.8V_AVDD
Close to respective power pins
BD605
1
C634
10uF
10V
C635 C636 C649 C650 C648
100nF 100nF 100nF 100nF 100nF
16V 16V 16V 16V 16V
AGND
+1.8V_DVDD
Close to respective power pins
BD606
1
C637
10uF
10V
C615
C638 C639 C641 C642 C643
100nF
100nF 100nF 100nF 100nF 100nF
16V
16V 16V 16V 16V 16V
DGND
9 Schematic Diagrams
9-1