9-4
4. LED Backlight Drive Block Diagram
PO
WER SUPLL
Y CB
A
LCD P
ANEL
ASSEMBL
Y
BA
CKLIGHT
-SW
P-ON+13V
TO
SYSTEM CONTR
OL
BLOCKDIA
GRAM
VLED1
1
ILED2
4
CN1001
BA
CKLIGHT
-ADJ
TO
PO
WER SUPPL
Y
BLOCK DIA
GRAM
VLED
ILED
Q752
Q751
Q757
Q753, Q754
SW+13V
LED
BA
CKLIGHT
DRIVE
IC752
SHUNT
REGULA
T
O
R
Q756
Q755
SW+13V
PL22.06BLBD