Philips 40PFL4706/F7 - Power Supply Block Diagram

9-4
4. Power Supply Block Diagram
PL11.3ABLP
HOT CIRCUIT. BE CAREFUL.
CN1
N
L
AC601
AC CORD
POWER SUPPLY CBA UNIT
LINE FILTER
F100 5A 250V
LF100-LF102
BRIDGE RECTIFIER
BD100
Q121
Q600
Q120
Q122
Q123
Q281
Q152
(ISOLATOR)
T600
Q670
1 4
6 7
9
10
8
5 3
14
3 2
(FEED BACK) PC650
14
3 2
(FEED BACK)
PC150
Q280
14
3 2
(FEED BACK)
PC281
OUT1
DRIVE DRIVE
FB
OUT2
VIN
7 7 8 3
FB
4
FB
3
RC
OC
7 6 5
VCC
VGH
5
16
2
IC120 (SWITCHING CONTROL)
(SWITCHING)
IC150
HIGH-VOLTAGE RESONANT CONTROL
TO LCD MODULE ASSEMBLY
CN2 CN2
CN4 CN4
HOT COLD
IC650
SHUNT
REG.
IC200
SHUNT
REG.
12
BACKLIGHT-SW
14
BACKLIGHT-ADJ(PWM)
13
BACKLIGHT-ADJ(DC)
FEED BACK
Q180, Q181
Q150 Q151
SWITCHING
SWITCHING
SWITCHING
T150B
3
11 12
7 9
10
8
5
14
3 2
PC280
T150A
3
11 12
7 9
10
8
5
VGL
VSEN
11
1
VCC
2
BACKLIGHT-SW
P-ON-H1
LCD-P-ON
CN3101
CN3101
BACKLIGHT-ADJ
IC3601
+3.3V REG.
Q3601, Q3602
Q3902
BACKLIGHT-SW
1
AL+5V6 6
11 12 13 14
1
BACKLIGHT-ADJ(DC)
2
2
BACKLIGHT-ADJ(PWM)
5
5 3
P-ON+12V11 P-ON+12V12 P-ON+12V13 P-ON+12V14
PANEL+24V1 PANEL+24V2 PANEL+24V3 PANEL+24V4 PANEL+24V5
P-ON-H13
P-ON+3.3V P-ON+12V
IC3606
+2.7V REG.
VCC+1.8V VCC+1.5V
IC3607
+5V REG.
SWITCHING
IC3001
+3.3V REG.
IC3609
+1.8V REG.
IC3802
+1.5V REG.
P-ON+5V TU+3.3V
IC3604
+1.25V REG.
VCC+1.25V
IC3602
+1.25V REG.
AL+1.25V
IC3603
+3.3V REG.
AL+3.3V
LCD+12V
Q3901
SWITCHING
SW+12V
DIGITAL MAIN CBA UNIT
TO SYSTEM CONTROL BLOCK DIAGRAM
5A 250V
40PFL4706/F7(Serial No.:DS1, DS2) 40PFL4706/F7(Serial No.:DS3, XA1)
40PFL4706/F7(Serial No.:DS1, DS2)
*2
40PFL4706/F7(Serial No.:DS3, XA1)
NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal.
CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F100) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.
For continued protection against risk of fire, replace only with same type 5 A, 250V fuse.
CAUTION ! : ATTENTION : Utiliser un fusible de rechange de même type de 5A, 250V.
5A/250V