Schematic Diagrams - ViewSonic VG500-2 VLCDS24349-2W Service Manual

10. Schematic Diagrams

5
R3 100R/NC
4 12M
D
C3 22pF
Y1
12MHZ
C4 22pF
R52
150R/NC
4 IRQ-
R10
+5V
R50
4 RESET_MVII
R11
3 SELFTEST
R12
+5V
6 VDDD_EN
C
6 PNLVCC_EN
6 VDDG_EN
WP
R14
SCL
R15
4 SCL
SDA
R16
B
4 SDA
CON3
+12V
SENSOR
1
2
3
4
CCFL_EN
5
BRIGHTNESS
6
MUTE+
7
8
9
10
STDBY
11
VOLUME
A
12
T-B12B-ZR
5
4
+5V
C1
R13 100uF/ 16V
10K
U1
35
EA/VP AD0 / P0.0
AD1 / P0.1
21
X1 AD2 / P0.2
AD3 / P0.3
AD4 / P0.4
20
X2 AD5 / P0.5
AD6 / P0.6
AD7 / P0.7
RESET
10
RESET
A8 / P2.0
A9 / P2.1
14
INT0 / P3.2 A10 / P2.2
15
INT1 / P3.3 A11 / P2.3
16
T0 / P3.4 A12 / P2.4
17
T1 / P3.5 A13 / P2.5
10K
A14 / P2.6
150R
2
P1.0 / T2 A15 / P2.7
4.7K
3
P1.1 / T2EX
4.7K/NC
4
P1.2 P3.7/ RD
5
P1.3 P3.6 / WR
6
P1.4 PSEN
7
P1.5 ALE
8
P1.6 P3.1 / TXD
9
P1.7 P3.0 / RXD
8051PLCC
+5V
C155
NC
U2
8 1
VCC A2
100R
7 2
WP A1
100R
6 3
SCL A0
100R
5 4
SDA GND
24LC16
R19
0/NC
+5V
CCFL_EN 4
BRIGHTNESS 4
3
C17
VOLUME 4
C16
0.1uF
470uF/16V
4
ViewSonic Corporation
3
C2
0.1uF
R4 R5 RP16
4.7K*4
4.7K 4.7K
+5V
MUTE+
43
SDA
42
SCL
41
WP
40
STDBY
RP2
39
SENSOR
38
GRN
4.7K*4
37
AMBER
36
MUTE
24
SP-
25
SP+
26
MENU
27
DOWN
28
UP
29
SEL
30
POWER
31
19
18
32
33
TXD
13
TXD
RxD
11
RXD
+5V
CON2
6
SCL
5
SDA
I_PORT
4
TxD
3
RxD
2
1
6 PIN WAFER
2.0 mm
I1 +3.3V
RC1117M-3.3
510mA
2
VIN VOUT
4
TAB
C18
TO-263
220uF/16V
3
42
Confidential – Do Not Copy
2
+5V
R1
510R
R6 1K/NC
R7 1K/NC
+5V
GRN
R8 1K Q1
3904
AMBER
RP3 R9 1K
4.7K*4
3
3
C7 C8 C9 C10 C11 C12
0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
+5V
2
R17 D1
1N4148
C5 100K
0.1uF R20
10K
C15
1uF/0805
Title
2.0 MCU
Size Document Number
B E91001
Date: Friday, July 25, 2003
2
VG500-2
1
R2
510R
D
LED_GRN
LED_AMB
Q2
3904
CON1
POWER
12
11
LED_GRN
10
LED_AMB
9
8
SEL
7
UP KEYBOARD
6
DOWN
5
MENU
4 C
SP+
3
SP-
2
MUTE
1
C13 C14 T-S12BZR
0.1uF 0.1uF
Q3
3906
RESET
3
B
R18
C6
5.1K 0.1uF
A
Rev
Sheet
1