Philips 32PFL4508 Service Manual page 34

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.
AC601
4
CN601
AC CORD
W
B
R601
F602
1.2M/1/2W
2.5A/250V
SA601
F601
OPEN VARISTOR
C604
0.22/275V
2.5A 250V
L601
LINE FILTER
JS602
JS601
OPEN
OPEN
C614
0.22/275V
D601
1N5397BD
L602
LINE FILTER
JS605 JS606
OPEN OPEN
D602
3
1N5397BD
C605
R614 330
470K
/200V
R603
470K
R604
470K
Q601
192.0
D TK7P60W
(SWITCHING)
G
2.6
S
0.1 Q602
2SC5344SY
C607
SWITCHING
1800P
CONTROL
2.6
0.4
2
0
Q621
KTC3875S
-Y-RTK/P
D607A D607
OVER
C611 C606
TFZGTR27B OPEN
OPEN 820P VOLTAGE
0.4
/2KV PROTECT
0.4
R622
0
0
R623
10K
D609A R609
CES520 100
R611 D608A D608 R615 C609 R612
OPEN 1ZB36BB 0.068 5.6K
0.36 OPEN
/2W
R616
OPEN
R617
OPEN
1
R618
OPEN
BC602
BEAD
R619
BC603 OPEN
BEAD
A
2.5A 250V
POWER SUPPLY CBA
C603
1000P/250V
C602
1000P/250V
C616
1000P/250V
SA602 GT601
JS603
OPEN OPEN D655
OPEN SB3A0BH
JS604
D604
OPEN D655A
1N5397BD
OPEN
R602
2.7/5W
D653
SB3A0BH
D653A
D603
OPEN
1N5397BD
C617 100P/250V C654 C655
470/16V 470/16V
T601
POWER TRANS
6 7
R651 D656
1 RS1BJTB
5 8
BC604
WIRE
C656 R693
1/50V OPEN
BC601
9
WIRE
C650
4
OPEN
10
D651
SB3150BH
C608 R606 R607
0.022 330 330
D651A
2 11
OPEN
D650
SB3150BH
1 12
R608 D605
1.5K MM5Z4V3B
D650A
OPEN C651
470/25V
D621
D610
HSC119
HSC119
R613
180
R621 D623
560 MM5Z30B
C623 C624
IC602
4.7 OPEN
TLP781F
ERROR
VOLTAGE DET R655 R654
C622 C621 180 180
13.0 20.0
10 OPEN
C610
R657
100P
3.9K
0.4 19.0
C666
0.22
C660 R658
0.22 2.7K
IC601
OPEN
19.0
2.5
D660
0
SL431A-AT
HOT COLD
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.
BC1002
C1001 C1002 C1003
WIRE
330/25V 1 1
BC1001
WIRE C1009
1/100V
R1011
470K
R1012
510K
C1017 R1013
1000P 27K
3.0
1
0.5
2
1.2
3
1.3
4
0.5
5
2.9
R1015 6
1.8K
1.0
D654 D654A R663 R664 R665 7
1ZB20BB OPEN OPEN OPEN OPEN
R1016
R1014
6.2K
100K
3.4 Q650
D657 R652
KTC3875S
MM5Z11B 56K
-3.1
-Y-RTK/P
(RESET)
0
D658 R691
OPEN OPEN Q659
OPEN
R653 R692
33K OPEN
R688
OPEN
C652 C653 D652 D652A
470/25V 470/25V OPEN OPEN
R676 R678 R679 R683
OPEN OPEN OPEN OPEN
Q658
2SA950-O
(+3.3V REG.)
R690
2.7
14.4 3.4
13.8
R673
OPEN
13.8
R659
R675
27K
68K
R660
R674
R667
3.9K
0
8.2K
D661
HSC119
R670 R671 R672
270 270 270
R661
3.3K
0 R669
10K
Q653 0.6
KTC3875S-Y-RTK/P
(SWITCHING)
0 R668
47K
D
10-3
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
L1001
C1004
22uH
OPEN
D1001
SK210TD
Q1001
AP18T10AGH-HF
C1008 C1007 C1006 C1005 (SWITCHING)
15.7
C1018 D
1/100V 1/100V 47/100V 47/100V
100P/1KV
G
3.0
S
0.1
R1021
OPEN
R1022
OPEN
IC1001
HA7219PB
R1023
LED BACKLIGHT
OPEN
DRIVER
R1003
1K
3.4
14
R1010 C1014
100 1
1.7
DRIVE COMP 13
18.0
ISET VIN 12
C1013 R1002 R1001
0
0.1 360 360
OVP GND 11
C1012
4.7
5.0
DRIVE LDO 10
CONTROL 3.0
9
LOGIC
0.1
RT 8
C1011
1000P
R1006
10K
R1004
R1007 R1005
10K
100K 100K
R1017
C1015
0
OPEN
R1018
0
C1016
Q657
R689 R685 R686 R687 OPEN
OPEN
OPEN OPEN OPEN OPEN
IC651
OPEN
D405
OPEN
1 2 3
R684
OPEN
D406
OPEN
C664
C662
OPEN
OPEN
3.4
Q656
C663 C661
KTC3875S-Y-RTK/P
R662 OPEN 1
3.9
(+3.3V REG.)
3.3K
D663
R680
OPEN
100
C665 R682
0.1 0
3.9
2.5
D662
0
SL431A-AT R681
10K
E
D1002
HSC119
R1008
10
R1009
200
GP001
EARTH PLATE
R1020 C1010
0.18/1W OPEN
GP002
EARTH PLATE
TO LCD PANEL
CN1001
ASSEMBLY
0.5
1 ILED2
0.5
2 ILED2
3 NU
R1019
OPEN 49.5
4 VLED
5 NU
0.5
6 ILED1
0.5
7 ILED1
TO DIGITAL MAIN
CN501
CBA UNIT CN3701
0
23 NU
0
22 PROTECT1
C633 3.4
21 PROTECT3
OPEN
3.4
20 RESET
3.3
C636
19 BACKLIGHT-SW
OPEN
C630 C632 3.3
18 P-ON-H2
OPEN OPEN
3.3
17 BACKLIGHT-ADJ
3.4
16 AL+3.3V
0
D664
C631 15 GND
TFZGTR4.7B
OPEN
0
14 GND
0
13 GND
0
12 GND
0
R677 11 GND
10K
0
10 GND
14.4
9 AMP+13V
14.4
8 AMP+13V
C635 C638
OPEN OPEN 14.4
7 AMP+13V
14.4
6 AMP+13V
0
5 GND
20.4
4 P-ON+21V
20.4
C639 3 P-ON+21V
OPEN
20.4
2 P-ON+21V
20.4
1 P-ON+21V
UNLESS OTHERWISE SPECIFIED:
DIODES ARE HSS4148TE-E.
F G
PL13.9SCP