Philips 43PFL4902/F7 Service Manual page 46

Power Supply Schematic Diagram
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F602) 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.
HOT CIRCUIT. BE CAREFUL.
L602
LINE FILTER
AC601
CN601
4 AC CORD
W
C604
R601
SA601 0.1
B
OPEN
VARISTOR
/310V
F602
2.5A/250V
2.5A 250V
C1612
0.47
/310V
R1624
0.22
/2W
3
BC1602
BEAD
C1613A
220P
/630V
Q1602
275.0
TK7P60W
D
(SWITCHING)
G
R1601 R1617 R1612
750K
750K 750K 16.5
S
R1630 0
R1602 R1618 R1613
OPEN
750K 750K 750K
R1604 R1619 R1614
D1603
750K 750K 750K
SF38G
R1605 R1620 R1615
750K 750K 750K
R1645
68K
D1605
C1607
SF38G
1200P
R1610
IC1601
12K
UCC28063DR
(SWITCHING CONTROL)
R1626
47
4.0 4.3
1 ZCDB ZCDA 16
5.9 5.9
2 VSENSE VREF 15
R1606
120K
2.6 9.9
3 TSET GDA 14
2 C1603
5.9 0 0.22
4 PHB GND 13
R1609
5.6K
1.4 16.9
5 COMP VCC 12
0 9.9
R1622
D1610 6 GND GDB 11
C1606
18K
OPEN
1000P
4.6 0
C1604
7 VINAC CS 10
2.2
5.5 0 C1601
8 HVSEN PWMCNTL 9
0.01
R1607
C1605
39K 1200P
R1616
R1608 C1608
47K
7.5K 1000P
R1621
1.8K Q1601
TK7P60W
(SWITCHING)
R1625
47
274.0
D
G
15.8
S
R1629 0
OPEN
R1655 C1610
OPEN 22P
1
C999
10/16V
A
2.5A 250V
L601
LINE FILTER
D601 D604
1N5406BH 1N5406BH
C614
1
/310V
D602 D603
1N5406BH 1N5406BH
D605 D606
1N4005FB 1N4005FB
C602
R610
0.1
10K
/310V
R611
10K
R614
10K
BC602
353.0 BEAD
Q601
D
TK5A65D
(SWITCHING)
G
16.0
C606
S C625
4.6
100P
OPEN
/2KV
R608
R617 R605 22
4.7K 270
D609
RB520SM-30
T1602 R618
D613
TE2520A7001 0.22 KDZTR36B
/2W
1 8
R604
1K
R1623
12K
4 5
R612 IC601
10K
BM1P062FJ
C613 SWITCHING
0.022
CONTROL
3.2 160.0
1 ACMONI VH 8
C610
0.9
OPEN 2 FB NU 7
R616
270
0 18.3
3 CS VCC 6
C607
1000P 0 13.0 C611
4 GND OUT 5
0.1
C608
D614
150P
OPEN
C1621 C1622
100 100
/400V /400V
R632
OPEN
Q609
OPEN
D610
C626 R633
OPEN
OPEN OPEN
C1609 R1654
22P OPEN
R1611
100
T1601
TE2520A7001
R1653
68
1 8
R1627
BC1601 12K
BEAD
4 5
C1614A
220P
/630V
Q1604
KTC8050S
-D-RTK/P
R1656
(SWITCHING)
4.7
16.9 18.9
C1602
C1611 R1633
4.7
0.1 3.3K 17.5
/50V
Q1607
R1637 2SA1576UBTLQ
R1634
47 (SWITCHING)
180
18.8 18.7
R1657 D1608 C1618
R1639
18.1
3.3K TFZVTR18B 10/50V
10K
B C
CAUTION ! : For continued protection against risk of fire,
replace only with same type 2.5A, 250V fuse.
ATTENTION : Utiliser un fusible de rechange de même type de 2.5A, 250V.
C616
100P/250V
C618
1000P/250V
C605
D607
OPEN
1N5406BH
D655
OPEN
T601
POWER TRANS
D655A
RS1GJTD
1
R624
C658
R630 R631 C665 R652
220K
11 1/50V
270K 270K 1500P 1
R625 /630V
220K 2
R626 D664A D664
10
220K RS1KJTD OPEN
D651
3 FCH20A20
9
R627
15K D621
5
OPEN
R623
2.7K
8
D621A
D652
RS1GJTD
OPEN
6
C615
100/35V
C653 R651
8.2
2200P
/630V
IC602
TLP785F
R628
ERROR
22K
VOLTAGE DET
1.0 19.8
R656 R655
180 180
C621 D623 0 18.8
4700P MM5Z5V6B
1.8 R658
3.9K
IC624
2.5 C619
AS431BNTR
C659 R659
0 1.0 1000P/250V
R620
-E1 0.1 2.7K
47K Q603
0
SHUNT
KTC3875S
18.8
REGULATOR
-Y-RTK/P 2.5
0
(SWITCHING) IC651
C660
0
C620 OPEN
R629 C624 AS431BNTR
1000P/250V
47K 0.1 -E1
SHUNT
REGULATOR
245.0
C1702 Q1701
T1702
D
OPEN TK7P60W
POWER TRANS
(SWITCHING)
G
5 C1014 D1007
257.0
R1702
D1703 R1704 S 1/250V SB3150BH
10
OPEN 10K 245.0 7
4
D1006
C1015
SB3150BH
1/310V
245.0 C1704 8
Q1702
D
TK7P60W 220P
R1706
/2KV
(SWITCHING)
10
G
9
20.0
D1704 R1708 S
2 D1008
OPEN 10K 0
SB3150BH
10
1
D1005 C1016
C1703 SB3150BH 1/310V
0.022
R1701 D1701
10 1SS400ST /400V
257.0
R1703
Q1703 680
257.0
2SA1576UBTLQ
T1701
(SWITCHING)
POWER TRANS
243.0
1
R1055 C1022
10 1/100V
10
2
D1017
MM5Z20B
R1705 D1702
10 1SS400ST
R1056 C1023
4
10 1/100V
6
20.3 D1018
R1707
5 MM5Z20B
680
21.3
0 Q1704 R1010
2SA1576UBTLQ 47K
(SWITCHING)
C1701
OPEN
IC1602
TLP785F
R1638 (ISOLATOR)
18K
0 1.2
0 0
Q691
KTC3875S
HOT COLD -Y-RTK/P
(SWITCHING)
D
10-3
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
POWER SUPPLY CBA
D656
MM5Z9V1B
R654
R653
22K
R657 3.3
10K
5.6K
Q651
0
KTC3875S
-Y-RTK/P
0 (RESET)
Q658
R679
KTC3875S
10K
0 0 -Y-RTK/P
Q653
(SWITCHING)
0.7
KTC3875S
0
-Y-RTK/P
0 R680
R663
0 (RESET)
47K
47K
Q657 0 R677
10K
KTC3875S 0.6
-Y-RTK/P
(SWITCHING) 0 C663 R678
1 22K
C654 C655 C656 C657 C664 D653 C652
470 470 470 470 OPEN OPEN OPEN
/25V /25V /25V /25V
D1014
1SS400ST
19.8 19.8
Q1006
R1051 D1013
KTC8050S
1 1SS400ST R1050
19.1
-D-RTK/P 5.6K
(SW+20V)
Q1004
2SA1576UBTLQ R1057
R660 180
(SWITCHING)
18K
R661 19.8 19.8
R1052
R1053
5.1K
680
5.6K
R667 19.1
D657 33K
1SS400ST R1046
D1705 2.2K R1047 D1011
MM5Z16B 18K
TFZVTR16B
R662
R1048
3.3K 0
Q1005
10K
0.6 KTC3875S
-Y-RTK/P
R1049 C1021 (SWITCHING)
0
47K 0.1
0
Q652
2.5
KTC3875S
-Y-RTK/P
R671
0 R669
(SWITCHING) 10K
22K
D1022
R1021
R1031 MM5Z27B
C1019 180K
OPEN
1/310V D1024
R1022
D1004 MM5Z27B
180K
1SS400ST
R1037 D1010
10K 1SS400ST
R1023
5.1K R1039
10K
D1021
R1018
R1032
C1020 MM5Z27B
180K
OPEN
1/310V
D1023
R1019
D1003 MM5Z27B
180K
1SS400ST
R1036 D1009
10K 1SS400ST
R1024
R1020
1K
5.1K R1038
10K
R1005
1K
D1015
R1013
OPEN
330K
IC1001
C1011 C1003
BD9412F-GE2
OPEN 0.1
LED BACKLIGHT
R1030
DRIVER
R1006 100K
C1002
100K
OPEN
19.8 18.0
1 VCC 18
C1004
OPEN
3.5 18.5
2 STB DRIVE 17
R1029
R1012 OPEN
C1010
0 0 0
0.01
3 GND 16
R1028
27K
1.6 3.0
4 OSC PWM2DC 15
R1011 R1017
100K 68K
2.5 0
5 14
PROTECT
C1005 C1013
0.01 OPEN
0.5 0
6 13
C1012
FEEDBACK
0.022
0.8 5.2
7 12
C1007 C1017
C1006
OPEN 1
1000P 3.3 2.2
8 PWM LOGIC ADIM 11
R1015
1K
0 3.3
9 PWM 10
R1016
C1008 R1014 D1002
C1009 100K
0.1 OPEN OPEN
220P
R692
C691 330
0.01
R691
0 0.7 10K
R694 C693
Q692
5.6K 2.2
0.7 KTC3875S 0
-Y-RTK/P
R693
R695
(SWITCHING) 0
0 22K
47K
E
TO DIGITAL MAIN
CN651
CBA UNIT CN3601
3.3
1 PROTECT3
3.3
2 RESET
3.2
3 BACKLIGHT-SW
3.2
4 P-ON-H2
3.3
5 BACKLIGHT-ADJ
3.3
6 AL+3.3V
0
7 GND
0
8 GND
0
9 GND
0
10 GND
0
11 GND
0
12 GND
0
13 GND
0
14 GND
0
15 GND
0
16 GND
0
17 GND
19.8
18 P-ON+20V
19.8
19 P-ON+20V
19.8
20 P-ON+20V
19.8
21 P-ON+20V
19.8
22 P-ON+20V
19.8
23 P-ON+20V
19.8
24 P-ON+20V
19.8
25 P-ON+20V
19.8
26 P-ON+20V
19.8
27 P-ON+20V
TO LCD PANEL
CN1001
ASSEMBLY
71.8
1 VLED1
0.5
2 ILED1
71.8
3 VLED2
0.5
4 ILED2
R1040
0.1
R1041
0.091
R1042
0.091
R1043
0.091
R1044
0.1
GP001
OPEN
GP002
OPEN
GP003
OPEN
GP004
OPEN
R1025
12K
C1018
OPEN
F
PL17.06SCP