Lmd1 Board - Sony BVM-L230 Service Manual

2-2. LMD1 Board

The LMD1 board consists of two switching regulators below and a protection circuit related to them as
the power supply of an LED backlight.
. Switching regulator for supplying a voltage to green LED
. Switching regulator for supplying a voltage to blue LED and supplying power to red LED power (on
the LMD2 board)
Block diagram of backlight power supply
G board
PFC+
BLUE
LED
power
GREEN
LED
power
LMD1 board
2-4
B_OUT
OVP
circuit
G_OUT
3-terminal
BL_12V
REG
LMD2 board
RED LED
FAN
power R_OUT
Protection FET
LED
driver IC
FAN
FAN
BVM-L230