Asus VW223 Service Manual page 22

Service Manual
MCU
+ 0.8V -
Q8
D19
2
2 VGA_5V
3 2 3
1
3 DVI_5V
+5V
D27
1
2,3,6,7 +5V
R42 + 0.79V -
GND_POWER
MCU_VDD
R21
7 INV_ON/OF F
R23
6 VOL_PWM
C16
GND_POWER
綼
MCU
D14
2
5 RESET_MCU
3
1
MCU_VDD
C17
D15 R44
GND_POWER
2007.11.13 modify
NVRAM
MCU_VDD
+ 0.24V - U5
D28 D29
1
A0
2 1 2 1 2
2
A1
3
A2
+ 0.79V -
4
GND
GND_POWER
PC-99 Circuit
MCU_VDD
R137
R136
1 INV_SW
Q10
INV_ON/OFF INV_ON/OFF INV_ON/OFF INV_ON/OFF INV_ON/OFF INV_ON/OFF
R138
GND_POWER
7 INV_ADJ
7 LED_GRN
MCU_VDD
7 LED_ORG
R111 R112
R34
3,5 DVI_SCL
R33
3,5 DVI_SDA
R38
2,5 VGA_SCL
R39
2,5 VGA_SDA
R113 R114
MCU_VDD
MCU_VDD
R13 R14 R15 R16 R17 R18
PWR_SW
7 PWR_SW
MENU MENU MENU MENU
7 MENU
KEY _UP
7 KEY _UP
KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN KEY _DOWN
7 KEY _DOWN
AUTO_ADJ
7 AUTO_ADJ
SOURCE_SELECT
7 SOURCE_SELECT
MCU_VDD
R48 R49
8 C22
VCC
7 WP
WP
6 R50 IICSCL
SCL
IICSDA
5 R51
SDA
MCU_VDD
3 DVI_HPD
MCU_VDD C15
GND_POWER
R26 R27
2007.11.13 ADD
HDCP_SCL
HDCP_SDA
MCU_VDD
R31
36 PANEL_ON_OFF
P1.4
1 35
P5.5/PWM5 P1.5
2 34
P5.6/HSCL2 P1.6
3 33
P5.7/HSDA2 P1.7
4 32
RST NC
5 31
HSCL1/RXD/P3.0 NC
6 30
NC NC
7 29
NC NC
8 28
HSDA1/TXD/P3.1 VSY NC
PWR_SW 9 27
P3.2/INT0 P6.7
MENU
10 26
P3.3/INT1 P6.6/CLKO1
KEY_UP 11 25
P3.4/T0 P6.5
KEY_DOWN 12
P3.5/T1
U3
AUTO_ADJ AUTO_ADJ AUDIO_FUNCTION
SOURCE_SELECT SOURCE_SELECT
INPUT_OPTION INPUT_OPTION INPUT_OPTION
GND_POWER
DC5V_Detect
MUTE
Y 1
2
R105
R47
MCU_VDD
C20 C21
GND_POWER
22
MCU_VDD 2007.11.13 ADD
R123 R124 R125 U11
8
VCC A0
7
WP A1
HDCP_SCL
R121 6
SCL A2
HDCP_SDA
R122 5
SDA GND
FOR HDCP
MCU_VDD
R118
R119
1
Q9
C78
PANEL_ON 7
MCU_VDD
R120
GND_POWER
R32
GND_POWER
Serial
R35
RTD_SDIO3 5
RTD_SCSB
R37 Host
RTD_SCSB 5
R36 RTD_SCLK
RTD_SCLK 5 Interface
WP
GND
COUT
R46
GND
C19
GND_POWER
MUTE 6
MCU_VDD
R12
AMP_SHDN 6
Q1
MUTE
1
GND_POWER
ASUS VW223
C77
1
2
3
4
GND_POWER
High w/o Audio
Low with Audio
MCU_VDD
R19
AUDIO_FUNCTION
R20
GND_POWER
High-->Dual MCU_VDD
Low-->Analog only
R22
INPUT_OPTION
R24
GND_POWER
Detect Power DC 5V
+5V
Y OUT 5
R115
DC5V_Detect
Reference Voltage 3.3V
R116
GND_POWER 2,3,5,6,7
GND_POWER