HP L1940T - 9 Schematic; Main Board

HP L1940T
24
9. Schematic
9.1 Main Board
GND
R218 100 1/16W
C228
0.1uF
R244
NC
GND
+5V
D213
BAV99
3
1 2
GND
D208
BAV99
3
1 2
C227 0.1uF
R214 100 1/16W
VS
VGA_5V
D206
BAV99
3
1 2
FB202
120 OHM
1 2
GND
R225
75 1% 1/16W
GND
RXC- (3)
C206
0.1uF
GND
C224 0.1uF
R228
NC
D204
BAV99
3
1 2
D212
BAV99
3
1 2
GND
UVCC
FB203
30 OHM
1 2
GND
D205
BAV99
3
1 2
GND
U201F
74LVC14APW
13 12
+3.3V
RX1- (3)
RX2+ (3)
DVI-SDA (3)
U201A
74LVC14APW
1 2
R216 NC
GND
HSIN (3)
R201
NC
DDC-VGA-SCL
SOG (3)
CN202
DVI-D-Female
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
31
32
C1
C2
C3
C4
C5
C6
TX2-
TX2+
TX2/4 Shld
TX4-
TX4+
DDC CLK
DDC DATA
A VS
TX1-
TX1+
TX1/3 Shld
TX3-
TX3+
+5V
GND
HP Detect
TX0-
TX0+
TX0/5 Shld
TX5-
TX5+
TXC Shld
TXC+
TXC-
SHELL1
SHELL2
AR
AG
AB
AHS
AGND
NC
C204
0.1uF
+3.3V
GND
BIN (3)
U403
24C02
1
2
3
45
6
7
8
A0
A1
A2
GNDSDA
SCLK
WP
VCC
GND
ISPSCL(3)
DDC-VGA-SDA
C220 0.1uF
Close to Scalar IC
GND
RX0- (3)
C211
0.1uF
GND
R232
100 1/16W
U201E
74LVC14APW
11 10
D201
BAV99
3
1 2
R224
75 1% 1/16W
DDC-DVI-SCL
U201D
74LVC14APW
9 8
100 1/16W R241
GND
100 1/16W R209
GND
C229
0.1uF
+3.3V
VGA_5V
DDC-DVI-SDA
GND
+5V
FB206
120 OHM
1 2
GND
+3.3V
C217
0.1uF
(10 mil, ┰キ︽絬 )
GND
R237
10K 1/16W
DDC_W_A(3)
DDC-DVI-SDA
R230
NC
R236
10K 1/16W
ZD204
UDZS5.6B
ZD202
UDZS5.6B
GND
DVI-SCL (3)
75-ohm terminating resistor
very close to the VGA
conn.
GND
C230
0.1uF
GND
RXC+ (3)
DDC-DVI-SCL
GND
C215
0.1uF
R229
NC
ZD205
UDZS5.6B
R234
2.2K 1/16W
C218 0.1uF
ZD203
UDZS5.6B
D209
BAV99
3
1 2
R223
10K 1/16W
ZD208
UDZS5.6B
GND
GIN (3)
C225 0.1uF
CN201
DB15
1
6
2
7
3
8
4
9
5
11
12
13
14
15
10
1716
R243
2.2K 1/16W
ZD207
UDZS5.6B
GND
GNDR (3)
DDC-VGA-SDA
220pF
C234
ISPSDA(3)
C210
0.1uF
D210
BAV99
3
1 2
R226
75 1% 1/16W
R215 100 1/16W
R206
10K 1/16W
RX0+ (3)
VGA_CABLE (3)
R233
0 1/16W
C207
0.1uF
R220 100 1/16W
5/16 ADD C226
for ESD
RX2- (3)
C219
NC
R239
100 1/16W
GND
C214
0.1uF
C213
0.1uF
R208
NC
U402
24C02
1
2
3
45
6
7
8
A0
A1
A2
GNDSDA
SCLK
WP
VCC
C231
33pF
C212
0.1uF
ZD206UDZS5.6B
R231
NC
D207
BAV99
3
1 2
GND
Bin1
D211
BAV99
3
1 2
R219
100 1/16W
GND
GND
C223
NC
Signal Input
B
715G
C
25Friday, May 05, 2006
Title
Size Document Number Rev
Date: Sheet
of
GND
FB204
120 OHM
1 2
R205
10K 1/16W
R213
NC
GND
U201C
74LVC14APW
5 6
147
R240
0 1/16W
Rin1
C221 NC
C205
33pF
D203
BAV70
R217 100 1/16W
+3.3V
C226
NC
FB201
30 OHM
1 2
DVI Input
R221 100 1/16W
C201
33pF
C222 0.1uF
100 1/16W R210
GND
DDC_W_D(3)
Gin1
GND
DVI_5V
VS
R227
NC
RX1+ (3)
VSIN (3)
R238
10K 1/16W
100 1/16W R242
R212
0 1/16W
R207
10K 1/16W
GND
D215
BAV70
C216
0.1uF
C208
0.1uF
100 1/16W R203
C233
0.1uF
DVI_CABLE (3)
DDC-VGA-SCL
R222
100 1/16W
FB205
30 OHM
1 2
GNDB (3)
ZD201UDZS5.6B
R211
10K 1/16W
GND
100 1/16W R202
RIN (3)
U201B
74LVC14APW
3 4
C209
0.1uF
DVI_5V
GNDG (3)
HS
HS
C202
0.1uF