Service manual

10. Schematic Diagrams
Model
Title
Date Rev:
ViewSonic Corporation
TOP
56
ViewSonic Corporation Confidential
-
Do Not Copy VA1912W/Wb
GIN
SDA
VSYNC
V18C
RIN
KEY_UP
HSYNC
CLK+
AD3
AUTO_ADJ
GNDB
R-
HWRESET
GNDR
DDC_DAT
G+
CLK-
G-
R+
SCL
B-
AD1
PANEL_ON/OFF
B+
BIN
AD2
SOG
GNDG
V33C
INV_ADJ
CSZ
AD0
DDC_CLK
V5A_ESD
INT
INV_ON/OFF
TCON_RESET
BSTH
RXEC+
STB
RXEC-
POL
CPV
STV
OE
GVON
GVOFF
BG2N
BG2P
BG1N
BG1P
BG0N
BG0P
BB2N
BB2P
BB1N
BB1P
BB0N
BB0P
FR2N
FR2P
BR2N
FR1N
BR2P
FR1P
RXO3-
BR1N
FR0N
RXO2+
BR1P
FR0P
FG2N
BR0N
RXO2-
FG2P
BR0P
RXO1+
FG1N
RXO1-
FG1P
RXO0+
FG0N
RXO0-
FG0P
FB2N
RXOC+
FB2P
RXOC-
FB1N
FB1P
RXE3-
FB0N
RXE2+
FB0P
RXE2-
FCKN
RXE1+
FCKP
FSTH
RXE1-
BCKN
RXE0+
BCKP
RXE0-
RXE3+
V33T
V33T
TST_PGI
RXO3+
TST_PGI
TCON_RESET
VOL_ADJ
AUDIO_ON
AUDIO_ON
AUDIOL+
AUDIOL-
AUDIOR+
V5A
VCPU
LED_BL
PWR_SW
KEY_DOWN
SOURCE_SELECT
LED_OR
MENU
AUDIOR-
V33A
VGA_5V
DVI_5V
DVI_5V
VGA_5V
DSUB_DET
V12A
DCDC_ON/OFF
DCDC_ON/OFF
V12A
V5A
VCM_PWM
DCC2_CLK
DCC2_CLK
DCC2_DAT
DCC2_DAT
AUD_DET
AUD_DET
XAOI
XAOI
VCPU
CM2706B
B4
MCU
CSZ
SCL
SDA
TCON_RESET
DDC_CLK
DDC_DAT
INT
INV_ON/OFF
HWRESET
VCM_PWM
DCDC_ON/OFF
PANEL_ON/OFF
AD0
AD1
AD2
AD3
AUDIO_ON
SOURCE_SELECT
MENU
KEY_DOWN
KEY_UP
AUTO_ADJ
LED_OR
LED_BL
PWR_SW
V5A
VGA_5V
TST_PGI
DVI_5V
DCC2_DAT
DCC2_CLK
DSUB_DET
V33A
AUD_DET
XAOI
VCPU
B13
BR2N
BR2P
BR1N
BR1P
BR0N
BR0P
BG2N
BG2P
BG1N
BG1P
BG0N
BG0P
BB2N
BB2P
BB1N
BB1P
BB0N
BB0P
BCKN
BCKP
FB2N
FB2P
FB1N
FB1P
FB0N
FB0P
FG2N
FG2P
FG1N
FG1P
FG0N
FG0P
FR2N
FR2P
FR1N
FR1P
FR0N
FR0P
FCKN
FCKP
FSTH
BSTH
CPV
STV
OE
GVON
GVOFF
STB
POL
RXO3+
RXO2-
RXO0-
RXOC+
RXO3-
RXO1+
RXO0+
RXOC-
RXO2+
RXO1-
RXE2-
RXE3+
RXE2+
RXEC-
RXE0+
RXE0-
RXE1+
RXEC+
RXE3-
RXE1-
V33T
TST_PGI
TCON_RESET
INVERTER I/F
B11
V12A
INV_ADJ
INV_ON/OFF
V33C
V5A
VOL_ADJ
AUDIO_ON
AUDIOR-
AUDIOR+
AUDIOL-
AUDIOL+
AUD_DET
OSD
B7
LED_BL
PWR_SW
AUTO_ADJ
KEY_DOWN
KEY_UP
MENU
SOURCE_SELECT
LED_OR
AUDIOR-
AUDIOR+
AUDIOL-
AUDIOL+
VCPU
B10
PANEL_INTERFACE
STB
POL
GVON
GVOFF
STV
OE
CPV
V33P
V12A
V5A
BR2N
BR2P
BR1N
BR1P
BR0N
BR0P
BG2N
BG2P
BG1N
BG1P
BG0N
BG0P
BB2N
BB2P
BB1N
BB1P
BB0P
BB0N
FR2N
FR2P
FR1N
FR1P
FR0N
FR0P
FG2N
FG2P
FG1N
FG1P
FG0N
FG0P
FB2N
FB2P
FB1N
FB1P
FB0N
FB0P
FCKN
FCKP
FSTH
BCKN
BCKP
BSTH
VCM_PWM
DCDC_ON/OFF
PANEL_ON/OFF
XAOI
B8
SCALER
R-
SCL
CSZ
RXO3-
RIN
GNDR
GIN
GNDG
SOG
BIN
GNDB
HSYNC
VSYNC
G+
R+
G-
B+
B-
CLK+
CLK-
SDA
HWRESET
INT
AD0
AD3
AD1
AD2
INV_ADJ
VOL_ADJ
V18C
V33C
RXO2+
RXO2-
RXO1+
RXO1-
RXO0+
RXO0-
RXOC+
RXOC-
RXE3+
RXE3-
RXE2+
RXE2-
RXE1+
RXE1-
RXE0+
RXE0-
RXEC+
RXEC-
RXO3+
B9
POWER
V33A
V5A
PANEL_ON/OFF
V18C
V33C
V33T
V33P
B2
VGA
RIN
GIN
BIN
VSYNC
GNDR
GNDG
GNDB
DDC_DAT
DDC_CLK
SOG
HSYNC
V5A
VGA_5V
V5A_ESD
DSUB_DET
B3
DVI
G+
R+
B-
R-
B+
G-
CLK+
CLK-
V5A
V5A_ESD
DCC2_CLK
DCC2_DAT
DVI_5V