Block Diagram - HP L1940 Service Manual

Control
Board
D2+/D2-
D1+/D1-
D0+/D0-
5V
R+-/G+-/B+-/CLK+-
R/G/B
AC to DC
BL_EN, Brightness
Power
+ Inverter
5V
Board
3.3V
12V

Block Diagram-1

HP L1940 BLOCK FUNCTION
EEPROM
5V
USB 2.0
3.3V
GL 850
R+-/G+-/B+-/CLK+-
R/G/B
HS/VS
DSUB_CA
ISPSCL,SDA
ADDR0/17, Data 0/7
Flash
Bank, ROM_OE/WE,
Memory
Panel_ID
EEPROM
3.3V
Key Function
Schmitter
gate
Write_enable
DDC
IIC
1.8V
Reg.
12V for LPL
5V for CMO/AU
Scaler
RXEC+/-
Gm5321
RXE3+/-
RXE2+/-
RXE1+/-
RXE0+/-
RXOC+/-
RXO3+/-
RXO2+/-
RXO1+/-
RXO0+/-
12V for LPL
5V for CMO/AU
Panel PWR
MOS
HP L1940
33
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