Samsung 172T Service Manual page 17

9 Schematic Diagrams
9-3 Schematic Diagram
+14V
+14V_INV
C106
82uF
16V
C108
100nF
16V
+5V
FT199
+5V
FT198
MO17P*/MO17E*
IC101
LM2596S-5.0
+5V
6
GND1
4
L112
F_B
Vin
3.3UH
1 2
L101
5 3
22uH
C110
100nF
C111
16V
100nF
16V
C102 D101 C109 R101
100nF SK34 82uF
PGND 4.7K
16V 6.3V
1/16W
+3.3V
IC103
L100
BA033FP
3.3UH
1 3
OUT
IN
GND
2
L108 Close to respective power pins
3.3UH
(gm5110 pin : 2,20,37,53,67,81,97,111,129/148,144,139)
1
C197
C189 C199 C151
100nF 100uF 100nF 100uF
C118
22uF
16V
PGND
C119
100nF
16V
DGND
L109 Close to respective power pins
3.3UH
(gm5110 pin : 141,146,150,173,181,187,193,196/164,168,172,160)
1
C138
22uF
16V
C139
100nF
16V
AGND
IC104
IC199
LP3961EMP-2.5
BA033FP
1 3 2 3 1
IN OUT
VIN VOUT
GND
1 4
2
SD SENSE
GND
5
C152 C150 C153
C103
100uF 100nF 100uF
100nF
16V 16V 16V
16V
PGND
AGND
DGND
+5V_M
R108
10K
R107
4.7K
C112 C113 C114
OFF_SW
100nF 100nF 100nF
16V 16V 16V
R197
DGND
4.7K
PANEL_EN
C120 C121 C122 C123 C124 C125 C126 C127 C128 C129 C130
100nF 100nF 100nF 100nF 100nF 100nF 100nF 100nF 100nF 100nF 100nF
16V 16V 16V 16V 16V 16V 16V 16V 16V 16V 16V
C140 C141 C142 C143 C144 C145 C146 C147 C148 C149 C156
100nF 100nF 100nF 100nF 100nF 100nF 100nF 100nF 100nF 100nF 100nF
16V 16V 16V 16V 16V 16V 16V 16V 16V 16V 16V
AVDD_2.5V
L110
Close to respective power pins
3.3UH
(gm5110 pin : 199)
1
C154
47uF
6.3V
C155
100nF
16V
AGND
Close to respective power pins
L111
(gm5110 pin : 176,182,188/88,134,153,155,26,203)
3.3UH
1
C163
47uF
6.3V
C164 C165 C166 C167 C168 C169
100nF 100nF 100nF 100nF 100nF 100nF
16V 16V 16V 16V 16V 16V
DGND
PGND AGND DGND
+5V +5V
PANEL_5V
R199
C190 C191
10K
1uF 1uF
IC105
SI9933ADY-T1
R109
8
1K 1
S1 D1
7
2
G1 D1_1
3 6
S2 D2
5
4
G2 D2_1
R198
1K
C
Q101
KSC1623-Y
B
R190
10K
E
DGND
C Q102
KSC1623-Y
B
E
DGND
DVDD_3.3V
C134 C135 C136
220pF 220pF 220pF
AVDD_3.3V
C157 C158 C159 C137
220pF 220pF 220pF 220pF
DVDD_2.5V
C131 C182 C183 C133 C161 C170 C171 C162 C160
100nF 100nF 100nF 220pF 220pF 220pF 220pF 220pF 220pF
16V 16V 16V
CONFIDENTIAL
+5V_SW
C198
R105 R106
22uF
10K 10K
16V
AGND
9-5