Block Diagram; Lcd Block Diagram; Mainboard Block Diagram - Lenovo L2021 Wide Service Manual

Lenovo Service Manual

5.Block Diagram

5.1 LCD Block Diagram

LCD Block Diagram

5.2 MainBoard Block Diagram

Main Board Block Diagram
FLASH ROM
M24C16
(U403)/NC
5V 3.3V 1.8V
Voltage converter
5V
DC-AC inverter
AC-DC
(5V/12V)
Power Board
AC supply
90V-264V
SDA
SCL
(Include ADC, OSD, MCU)
Key Board Control
(CN402)
2-CCFL backlight
Key board
Crystal24MHz
(X401)
RTD2122
(U401)
DB15_SDA DVI_SDA
DB15_SCL DVI_SCL
15
Panel LVDS
Main Board
Computer VGA
Computer DVI
Input signal
LCD PANEL
(CN601/CN602)
Scalar IC RTD2525
Signal access
U501
H sync
V sync
D-Sub
Connector Connector
(CN301)
L2021W
DVI
(CN302)