Service manual

VGA I/P
Mcu NT 68F633L
LCD PANEL
EEPROM 24LC16
POWER
SCALAR NT68563HF
DVI I/P
X'TAL
(12MHz)
SI9435
TDA7496L
STEP DOWN CONVERTER
+3.3V
CVDD1V8(+1.8V) MCU-VDD(+3.3V)
+5V+12V
+12V
PHONE JACK
MUTE
STANDBY
VOLUME
+5V
LCD_VDD
+3.3V +1.8V
Key Pad
BL-ON
BL-BRIGHT
SDA CSL VGA-SDA VGA-SCL DVI-SDA DVI-SCL
VGA-SDA VGA-SCL
DVI-SDA DVI-SCL
SDA CSL
LCD-ON
RSTN
REFCLKI
MCU-VDD(+3.3V)
INVERTER HV
MCU-VDD(+3.3V)
INVERTER BOARD
AC 90-264V
+20V ON/OFF ADJ
9. Block Diagram
62
ViewSonic Corporation VA2012w-1_VA2012wb-1 Confidential - Do Not Copy