Philips 32PFL3506/F7 - Page 45

9-11
5. Inverter Block Diagram
PL11.0BBLINV
INVERTER CBA
CN1001
PROTECT3
10
BACKLIGHT-ADJ
12
VCOM
2
BACKLIGHT-SW
11
TO SYSTEM CONTROL BLOCK DIAGRAM (CN201)
T1950
10 11 14 15
2 3 4 5 7 8
14
3 2
Q1970
(FEED BACK) (ISOLATOR)
Q1971
IC1930
14
3 2
IC1931
Q1931
TO POWER SUPPLY BLOCK DIAGRAM (CN602)
HOT
COLD
HOT CIRCUIT. BE CAREFUL.
Q1972
SWITCHING
Q1930
CN1901
Q1932
LCD MODULE ASSEMBLY
+B1
HOT+15V4
HOT-GND3
10
CN1003
VCOM
IC1200 (PWM CONTROL)
BACK LIGHT
1 2 1
2
CN1101 CN1102
BACK LIGHT
T1101
Q1201
Q1300
Q1303
Q1700
T1102
OUTPUT
PROTECT
STB
DUTY
LOGIC
PWM
FEED
BACK
SWITCHING
Q1701
SWITCHING
Q1702
SWITCHING
Q1703
SWITCHING
24 21
13
18
12 16
7
17
4
2
Q1202
Q1301
T1100
BACK LIGHT
1 2
CN1100
4
1
3
7
6
8 5
2
4
1
3
7
6
8 5
2
4
1
3
7
6
8 5
2
+10.5V REG.
NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal.