HP L1940 Service Manual

Block Diagram-1
33
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HP L1940
Scaler
Gm5321
R/G/B
ADDR0/17, Data 0/7
Bank, ROM_OE/WE,
Panel_ID
Flash
Memory
30 Pin Connector to panel
D-SUB
Schmitter
gate
HS/VS
DSUB_CA
DDC
EEPROM
IIC
AC to DC
Power
+Inverter
Board
BL_EN, Brightness
Panel PWR
MOS
12V for LPL
5V for CMO/AU
Control
Board
3.3V
12V
1.8V
Reg.
LVDS
ISPSCL,SDA
HP L1940 BLOCK FUNCTION
DVI
R+-/G+-/B+-/CLK+-
USB 2.0
GL 850
Upstream
port
3.3V
Key Function
RXO0+/-
RXO1+/-
RXO2+/-
RXO3+/-
RXOC+/-
RXE0+/-
RXE1+/-
RXE2+/-
RXE3+/-
RXEC+/-
5V
Write_enable
Downstream
port x2
EEPROM
5V
5V
D1+/D1-
D0+/D0-
D2+/D2-
12V for LPL
5V for CMO/AU
R/G/B
R+-/G+-/B+-/CLK+-
3.3V

HP L1940 Specifications

General

Brand	HP
Model	L1940
Category	Monitor
Language	English