Philips 32PFL4664/F7 - Page 49

9-9
4. LED Backlight Drive Block Diagram
DIGITAL MAIN CBA UNIT
LCD PANEL ASSEMBLY
BACKLIGHT-SW
P-ON+13V
TO SYSTEM CONTROL BLOCKDIAGRAM
VLED1 ILED2
CN1001
Q1003
Q1015
Q1004
Q1010
Q3903
Q1005
+12V REG.
LED BACKLIGHT DRIVE
PROTECT3
BACKLIGHT-ADJ
Q1009
TO POWER SUPPLY BLOCK DIAGRAM
VLED
ILED
Q1016,Q1017,Q1018
ERROR DETECT
Q1019
LED BACKLIGHT CONTROL SIGNAL DETECT
PL19.00BBLBD