Philips 50PFL4909/F7 Service Manual page 36

Power Supply 1 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
AC CORD
C604 R601
W
SA601
0.1 1.2M
VARISTOR
B /310V /1/2W
4
F602
2.5A/250V
2.5A 250V
C1615
BC1601
OPEN
WIRE
BC1602
WIRE
C1612
0.47
/310V
R1624
0.033/5W
3
C1626
OPEN
C1613
220P
/2KV
Q1602
TK7P60W
R1601 R1617
R1612
750K 750K (SWITCHING)
750K
G
R1602 R1618
R1613
750K 750K 6.5
750K
R1630
R1604 R1619
R1614
OPEN
750K 750K
750K
R1605 R1620 R1615
750K 750K 750K
R1645
68K
C1607
1200P IC1601
R1610
18K UCC28063DR
(SWITCHING CONTROL)
2
1.4 1.4
1 ZCDB ZCDA 16
6.0 6.0
2 VSENSE VREF 15
R1606
120K
3.1 6.5
3 TSET GDA 14
C1603
6.0 0 0.22
4 PHB GND 13
R1609
5.6K
1.4 15.4
5 COMP VCC 12
0 6.5
R1622
D1610 6 GND GDB 11
C1606
18K
OPEN
1000P
1.7 0
C1604
7 VINAC CS 10
2.2
3.6 0
8 HVSEN PWMCNTL 9
R1607 C1605
220 1200P
R1616
47K C1608
R1608 1000P
R1621
51K
1.8K
Q1601
TK7P60W
(SWITCHING)
R1625
47
150.3
6.5
1
R1629
OPEN
R1655 C1610
OPEN 22P
A
2.5A 250V
L601
LINE FILTER
C614 D601 D604
1N5406BH 1N5406BH
1
/310V
D602 D603
1N5406BH 1N5406BH
379.2
Q601
D
TK4P60DA
(SWITCHING)
G
2.2
C606
S C625 D611
220P 0
1000P OPEN
R617
/2KV
4.7K
R618
0.22
/2W
R608
22
R605
D613A D613
270
D609A
OPEN 1ZB36BB
CES520
T1602
R609
TE2520A7001
820K
1 8
R604
2.7K
IC601
R1623 FA5640N
12K
SWITCHING
CONTROL
4 5
1.1 157.5
1 ZCD VH 8
C610
R607 1.4
220P 2 FB NU 7
4.7K
150.2
0.1 17.2
D 3 IS VCC 6
C607
1000P
0 2.7
4 GND OUT 5
S
0
R603 C608
R613 D614
OPEN 150P
TFZVTR27B
OPEN
D1603
30PFB60
C1621
D1605
100
30PFB60
/400V
D1705A
CES520
C1609 R1654
R1626
22P OPEN
47
IC1701
FA5640N
R1704
SWITCHING
22K
CONTROL
1.0 14.4
1 ZCD VH 8
R1703 C1703
2.0
R1611
4.7K 220P 2 FB NU 7
100
T1601
0.1 14.4
3 IS VCC 6
TE2520A7001 C1701
1000P
0 5.0
C1601 R1653
1 8 4 GND OUT 5
8200P 68
R1701 C1702 R1709 D1704
OPEN 150P OPEN
OPEN
4 5
C1614
220P
/2KV
C1602
D C1611 Q1604
4.7
0.1 2SC5344SY
/50V R1656
G (SWITCHING)
4.7
15.4 18.6
S
0
16.1
R1633
2.7K
R1634 Q1607
R1627 47 R1637 2SA1576UBTLQ
12K
(SWITCHING)
180
18.6
R1657 D1608 C1618
2.7K TFZVTR16B 10/50V
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.
HOT
D607
1N5406BH
C619
1000P/250V
C602
0.1 D605
1N4005
/310V
D606
C605 T601
1N4005
33/400V POWER TRANS
R624 R610
1
510K 15K
R630 R631 C665
R625 R611
560K 560K 680P
510K 15K
/2KV
R626 R614
2
510K 15K
D664A D664
RS1KJTD OPEN
3
BC602
R627 D620 D619
BEAD
36K OPEN OPEN
R623 4
1.8K
D620A D619A
RS1GJTD RS1GJTD
R606
22K
5
C616 D621
220 OPEN
/35V
Q602
D615
TK3P50D
6
1SS400ST
(SWITCHING)
R619 D621A
D617
4.7 RS1GJTD
0
S D
C615
18.1 36.9
47/50V
G
17.7 R635 R633 R632
IC602
1.2K 1.2K 1.2K
TLP785F
C612 D618
ERROR
1000P TFZVTR18B
VOLTAGE DET
1.4
R628
0
22K
D623
C621
1.9 MM5Z5V6B
4700P
1.4
R620
IC604
R634 47K Q603
2.5 0
270 SL431A-AT KTC3875S
0
C622 C624
SHUNT -Y-RTK/P
0
1000P 0.1
REGULATOR (SWITCHING) T1701
C611
0.1 POWER TRANS
R629
47K
7 10
C1726
C1708
C620
R1746 R1747 1500P
33/400V
33/35V
270K 270K
/2KV
6 11
D1714 D1714A
OPEN RS1KJTD
5 13
Q1704
269.6 BC1703
TK5A65D
BEAD
D
(SWITCHING)
R1714
22
G
C1706
4.6
D1710 C1710
R1712 S 470P
OPEN 1000P R1718
180 /2KV 3 14
0.1
22K
2 15
R1702 D1707A R1719 D1707
R1707
2.7K OPEN 0.12/2W 1ZB36BB
820K
IC1702
TLP785F
Q1702
2SA1576UBTLQ ERROR
VOLTAGE DET
(SW+15V)
2.0
15.5 15.4
R1711
14.8
10K
0
R1720 R1710
270 22K
C1704
0.1
R1705 0
27K
0.7 Q1701
KTC3875S
IC1602
R1708
C1709 -Y-RTK/P
0
22K TLP785F
220/10V
(SWITCHING)
(ISOLATOR)
0.1
0
C1707
18.7
1000P/250V
R1639
18.0
10K R1638
18K
C1711
OPEN
D
10-3
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
COLD
POWER SUPPLY CBA
D650
SB3200BR
12
C650 C651 C652 D652 D652A
2200P/1KV 470/25V 470/25V OPEN OPEN
11
3.3
R653
22K
10 Q650
0
D656 KTC3875S
OPEN -Y-RTK/P
0 (RESET)
9
D656A D657
Q702
RS1GJTD MM5Z4V3B
KTC3875S
0 0
-Y-RTK/P
R652
8 C656
R651 R656 Q654 (SWITCHING)
10K
1/50V 0.7
1 8.2K KTC3875S
0
-Y-RTK/P 0 R704
R662
D658
47K
47K 0 (RESET)
OPEN
7
D653
SB3150BH
D654A C657 R663
Q701
D655 OPEN OPEN OPEN
KTC3875S
SB3150BH
-Y-RTK/P
0
(SWITCHING)
C654 C655 D654
470/16V 470/16V 1ZB20BB
0.6
0
21.1
R654
R655
180
180
20.1
R657 Q705
3.9K 2SA1201-Y
R756
R659
(+3.3V REG.)
1.5
27K
R675
68K 12.9 3.3
R660
C660 R658
3.9K
0.1 2.7K
12.3
R674 R667
R752
0 8.2K
20.1 OPEN
12.3 3.3
2.5
Q703
D660 D661
KTC3875S
0
SL431A-AT 1SS400ST 3.9
R749 R750 R751 -Y-RTK/P
R661
270 270 270
(SWITCHING)
3.3K
D710 C729
SB3200BR 0.1
3.9
D711 0 2.5
Q653
SB3200BR
0.7
KTC3875S D715
0
SL431A-AT
-Y-RTK/P
0 R668
(SWITCHING)
D712
47K
SB3200BR
R669
10K
C725
2200P/1KV
D713 D713A
C723 C724 C726
OPEN OPEN
470/63V 470/63V 470/63V
R738 R741
330 3.9K
26.3
D1711
C722
TFZVTR27B
0.1
25.3
R739
15K
R743
C721 R740 51K
0.1 2.7K
R744
25.3 9.1K
2.5
D704
R745
0
SL431A-AT
3.3K
R692
330
1.8
C691
0.01
D662
0.7
1SS400ST
0.7
R691
Q691
2.2K
1.4
KTC3875S
-Y-RTK/P
(SWITCHING) R693
0.7 C692
47K
33/35V
D663
1SS400ST
E
CONTINUE
POWER SUPPLY 2
BACKLIGHT-SW
BACKLIGHT-ADJ
PROTECT3
AMP+13V
TO DIGITAL MAIN
CN501 CBA UNIT CN3601
1 NU
2 PROTECT1(NU)
3.3
3 PROTECT3
3.3
4 RESET
3.3
R703 5 BACKLIGHT-SW
10K
3.1
6 P-ON-H2
3.3
7 BACKLIGHT-ADJ
3.3
8 AL+3.3V
0
C637 9 GND
OPEN
0
10 GND
0
11 GND
0
12 GND
0
13 GND
0
14 GND
12.9
15 AMP+13V
R701
12.9
10K C638 16 AMP+13V
OPEN
12.9
17 AMP+13V
C701 R702 12.9
18 AMP+13V
OPEN 47K
0
19 GND
21.2
20 P-ON+21V
21.2
C639 21 P-ON+21V
OPEN
21.2
22 P-ON+21V
21.2
23 P-ON+21V
C728
100/10V
R748
3.3K
R753
R755 100
0
D716
TFZVTR4.7B
R754
10K
CONTINUE
POWER SUPPLY 2
VIN
C1004
1/100V
F G
PL14.24SCP1