Philips 55PFL5706/F7 Service Manual page 34

Power Supply 2 Schematic Diagram
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
HOT CIRCUIT. BE CAREFUL.
4
CONTINUE
POWER SUPPLY 1
+345V
HOT+17V
HOT+15V
POWER-CONTROL
C1721
47/50V
D1705
1SS133
3
C1719
4.7/50V
C1710
0.1
R1710
10K
R1417
100K
2 D1403
R1418
OPEN
100K
R1419 D1404
100K OPEN
R1422
100K
C1411
1.5K
R1440
WIRE
R1441
Q1401
WIRE
2SC2120-Y
(+15V REG.)
15.1 15.9
15.8
R1438
100
R1437 R1410 R1411
47 47 100
D1401
C1408
16BSB-T26
33/50V
1
G
D1706 R1701
SB140 10
R1713
47
D1701
OPEN
D1707 R1702
SB140 10
R1718
C1708 R1703 D1708
47
0.1 10K 4V7BSB-T26
IC1702
TEA1611T
D1702
HIGH-VOLTAGE
OPEN
RESONANT
CONTROL
R1747
WIRE
0 3.1
1 GND VREF 20
0.1
C1705 R1709
2 VCO SD 19
C1711 R1708 4700P 1K
0.47 68K
0
3 CSS IRS 18
C1709
330P
0.3 2.2
4 CT CF 17
R1705
39K
0.1
5 OCP IFS 16 R1748 D1703
C1731
6.8K 1SS133
C1707
0.01
0 5.1
0.1
6 GND RESET 15
15.1
7 NU VAUX 14
R1706
174.3 12.8 470
8 SH VDD 13
5.8 D1709
9 GH GL 12
OPEN
183.4 0
10 VDD GND 11
D1723
C1701 C1704 D1711
OPEN
0.1 22/50V OPEN
R1711 R1712 D1704
33K 68K 1SS133
Q1703
2SA950-O
(SWITCHING)
15.1 15.1
R1714
14.4
10K
R1717
2.2K
0
Q1704
0.8
2SC2412K
Q1402
2SA1576UBTLQ (SWITCHING) R1715
0
22K
SWITCHING
P-ON-ON
15.9 15.9
R1412
15.2
10K
R1413
4.7K
R1416
39K
Q1403 0
2SC2412K
0.8
T146R
SWITCHING
C1409 R1415 0.8
0 D1402
P-ON-ON 0.1 4.7K
Q1404 24BSB-T26
0
2SC2412K
C1410 R1423
SWITCHING 0
0.022 220K
P-ON-ON
H I
C1725
2200/35V
BC1701
WIRE
BC1702
WIRE
Q1701
2SK3568 T1701
346.6
D POWER TRANS
(SWITCHING)
BC1703
C1702
G WIRE
330P 16
/2KV
S
173.3 C1734
1000P
2 15
R1722 /1KV
10K
3 14
Q1702
4 13
2SK3568
173.3
D
(SWITCHING)
C1703
G
330P 12
5.8
/2KV
S
0 BC1704
R1724 WIRE
10K 6 11
C1714
BC1705
0.039
WIRE
/630V 7 10
BC1706
R1719 R1720 WIRE
0.18 0.18 8 9
/2W /2W C1735
C1706
1000P
D1735
100P
/1KV
SB340
/1KV
D1736
D1710 SB340
R1704
33BSB-T26
3.3K
D1737
SB340
D1738
SB340
C1712 C1713
0.1 22/50V
IC1704
PS2561L1-1-AV-(L)
(FEEDBACK) R1730 R1746
150 150
12.8 23.9
R1734
R1732
2.2K
3.9K
1.8 22.8
R1707 C1743
C1715
1K 2200P
4700P
R1735
C1720 R1731 2.2K
0.047 2.7K
R1736
2.2K
D1720
R1737
IC1705
KIA431-AT/P
22K
PS2561L1-1-AV-(L)
SHUNT
R1761
(ISOLATOR)
REG.
430
15.1 1.2
R1739
C1732
390
0.01
15.1 0
0
R1740
Q1707 0.7 0
2SC2412K
R1716
SWITCHING C1722 R1741
0
47K
0.01 47K
P-ON-ON
C1716 IC1703
33/50V
PS2561L1-1-AV-(L)
(ISOLATOR) R1729
220
15.9 1.4
C1733
0.01
15.9 0.2
0.2
Q1705 0.7
2SC2412K
SWITCHING C1717 R1726
0
0.01 47K
P-ON-ON
C1412 R1420
0.01 26.7K
R1421
0
HOT COLD
J
10-4
POWER SUPPLY CBA
D1717 R1774 R1775 R1776 R1777
C1727 C1728 C1726
OPEN OPEN OPEN OPEN OPEN
2200/35V 470/35V 0.1
D1725
OPEN
D1714
C1744 R1752 R1751 R1749 R1750 C1745
YG865C08RSC-P
OPEN OPEN OPEN OPEN OPEN OPEN
D1726
OPEN
D1721
OPEN
C1764 C1802 C1803 C1804 C1805
OPEN OPEN OPEN 2200P OPEN
D1715
YG865C08RSC-P
D1727
C1736 C1737 C1738 C1739
R1762 R1758 OPEN
2200/16V 2200/16V OPEN 0.1
OPEN 2.2K
R1805
D1730 OPEN
R1757
OPEN
2.2K
D1731
OPEN
C1806 R1807
OPEN OPEN R1804
R1803
OPEN
0
Q1801
OPEN R1801
OPEN
R1808
R1806
JS1801
OPEN
10K
D1801
OPEN
D1728
27BSD-T26
D1712
JS1802
18BSB-T26
OPEN
C1718
R1759 0.01
2.7K 3.0
R1727
5.1K
6.9
Q1706 R1802
1K
2SA1576UBTLQ
0
R1728 (SWITCHING)
4.7K
C1812
OPEN
JS1803
C1811
OPEN
OPEN
R1742
10K
JS1804
0.7
R1756 OPEN
Q1708 3.3K
0
2SC2412K
(SWITCHING) C1741 R1755
0
0.01 10K
R1778 R1779 R1780 R1781 C1765
OPEN OPEN OPEN OPEN OPEN
R1725
2.2K
D1729
C1809
16BSB-T26
OPEN
0.7
R1760
R1753
2.7K
Q1709 3.3K
0
2SC2412K
(SWITCHING) C1742 R1754
0
0.01 10K
K
TO LCD MODULE
CN1913 ASSEMBLY
24.3
1 PANEL+24V
24.3
2 PANEL+24V
24.3
3 PANEL+24V
24.3
4 PANEL+24V
24.3
5 PANEL+24V
0
6 GND
0
7 GND
0
8 GND
0
9 GND
0
10 GND
CN1915
(NO CONECTION)
4 LCD+24V
3 LCD+24V
2 GND
1 GND
TO LCD MODULE
CN1914 ASSEMBLY
24.3
1 PANEL+24V
24.3
2 PANEL+24V
24.3
3 PANEL+24V
24.3
4 PANEL+24V
24.3
5 PANEL+24V
0
6 GND
0
7 GND
0
8 GND
0
9 GND
0
10 GND
0.1
11 P-ON-H1
2.9
12 BACKLIGHT-SW
1.8
13 BACKLIGHT-ADJ
0
14 BACKLIGHT-ADJ
CONTINUE
POWER SUPPLY 1
AL+5V
PANEL+24V
P-ON-H1
POWER-RESET
TO DIGITAL MAIN
CBA UNIT CN3101
/FRC CBA UNIT
CN1801 CN5002
3.2
1 BACKLIGHT-SW
1.8
2 BACKLIGHT-ADJ(DC)
3.0
3 P-ON-H1
0
4 GND
0
5 BACKLIGHT-ADJ(PWM)
4.4
6 AL+5V
0
7 GND
0
8 GND
0
9 GND
0
10 GND
12.0
11 P-ON+12V
12.0
12 P-ON+12V
12.0
13 P-ON+12V
12.0
14 P-ON+12V
L
PL11.8SCP2