Philips 40PFL4901/F7 - Page 42

9-4
4. LED Backlight Drive Block Diagram
IC1101 (LED BACKLIGHT DRIVER)
Q1101
VLED11 ILED12
Q1102
Q1103
DIGITAL MAIN CBA UNIT
LCD PANEL ASSEMBLY
PROTECT3
BACKLIGHT-ADJ BACKLIGHT-SW
TO SYSTEM CONTROL BLOCK DIAGRAM
P-ON+21V
CN1101
DRIVE
OVP
3
2 6
14
DRIVE
VREG
13 15 11
CONTROL LOGIC
PL15.01ABLBD