Philips 22PFL4507/F7 - Page 39

9-9
4. LED Backlight Drive Block Diagram
IC1001 (LED BACKLIGHT DRIVER)
OVP
CN1001
DRIVE
Q1001
CONTROL LOGIC
10 16 14 13
1
DRIVE
3
2
DRIVE
5
DRIVE
4
ILED16 VLED4 ILED27 ILED32 ILED41
P-ON+21V
POWER SUPPLY CBA
LCD PANEL ASSEMBLY
PROTECT3
BACKLIGHT-ADJ BACKLIGHT-SW
TO SYSTEM CONTROL BLOCK DIAGRAM
PL12.0BBLBD