Circuit Theory - ViewSonic VA702/b Service Manual

3. CIRCUIT THEORY

1. Block Diagram
TFT LCD Panel 17"
MT170EN01(Innolux)
Lamp1 Lamp2
1
Transformer1
AOP605L
OZ9910
AOP605L
Transformer2
Open
Protection
4 3
3
4
Lamp3 Lamp4
ViewSonic Corporation
2
Power
Transformer
Rectifier &
Filter Circuit
AC Line Filter
1
2
AC Socket
AC Input 90V-264V
Block Diagram
12V
Rectifier &
Filter Circuit
5V
24C16
Feedback
OVP
LTV817
TOP246Y
OPP/OCP
Keypad
Connector
Keyboard
Confidential
4
5V
AP2301
PMBT3906
LDO
5V-3.3V
5V-1.8V
Panel Enable
On/Off
MCU
W78E65p
XTAL2
14.318MHz
XTAL1
22.118MHz
24C02
D o Not Copy
Panel Interface
Brightness
Scaler
TSU16AK
VGA Connector
VGA Input
VA702/b