Philips 40PFL3705D/F7 Service Manual page 61

Power Supply CBA Bottom View
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F1601) 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.
CN1802
1
R677
TUNER+35V
LCD+12V
LCD+12V
GND
GND
P-ON+3.3V
GND
+6.5Vfor1V
GND
R680
P-ON3.5V
forREG
D666
GND
P-ON+5.0V
GND
24VforAMP
GND
15
C660
J1126
GND
R670
J1091
PROTECT1
D672
D664
D671
R672
C654
J1099
GND
R687 R685
J1046
GND
J1041
GND
D1802
J1030
P-ON-H2
J1082
GND
Q1705
J1060
GND
J1100
GND
J1007
GND C1207
D1102
J1011
ALL+4.3V
1:GND
2:PROTECT3
3:PROTECT1
D1101
4:BL-SW
5:BL-ADJ
6:PWR RESET
7:P-ON-H2
8:P-ON-H1
9:GND
10:GND
11:GND
T1201
12:ALL+4.3V
13:ALL+4.3V
D1103
J1111
GND
IC1202
J1005
ALL+4.3V
R1226
J1113
GND
C1209
Q1202
HOT
R1214
R1216
1
CAUTION ! :
8A 250V
ATTENTION : Utiliser un fusible de rechange de même type de 8A, 250V.
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
CN1803
R664
C663
CN1804
COLD
C670
16
15
D662 14
13
12
11
J1127
C659
10
HOT-GND
9
1
3
5
J1043
Q601
6
R608
D607
7
Q602
R607
D658
R610
D608
C605
R611
C652
COLD
IC601
HOT
R615 D615
C609
R614
J1129
HOT-GND
IC1703
R1410
R1203
C1208
R1437
BC1202
C1204
C1201
D1207 BC1203
F1601
FH1603 FH1604
T 8A H/250V
RL+5.0V J1103
2
For continued protection against risk of fire,
replace only with same type 8A, 250V fuse.
D1704
J1067
D1709
HOT R1707
IFS
C1713
20 11
D1723 R1712
J1065
GL
J1102
D1707
GND
R1702
R1720 J1062
GH
R1718
R1704
1 10
IC1702
R1748
Q1702
J1059
R1719 D1706
C1719
C1703
J1054
SD
J1128
HOT-GND
D1701
R1722
Q1701
R609
D606
R616
D610
D611
C1413
J1139
C606
J1104
HOT
C1617
C1714
11
8
R601
HOT-GND J1027
HOT-GND J1022
HOT-GND J1020
5 2 L1604
J1017
345V
C1621
C1612
C1211
RL1201
D1215
3 4
10-18
Because a hot chassis ground is present in the power supply
circuit, an isolation transformer must be used when repairing.
Also, in order to have the ability to increase the input slowly,
when troubleshooting this type of power supply circuit,
a variable isolation transformer is required.
D1801
R1801
R1802
JS1801
Q1706
BL-ADJ
R1808
Q1703
R1745
J1068
VDD
PWM-SEL
IC1704
D1719
R1730
R1746 D1716
IC1705
R1732
C1720
C1734
Q1707
C1716
Q1704
J1134 Q1708
D1713
J1131
GND
INV+24V
J1132
INV+24V
T1701
C1735
BC1701
BC1702
BC1703
BC1704
HS1722
D1717
C1729
C1728
C1727 C1725
11
8
C1613
D1603
Q1602
5 2
L1603
C1620
D1609
C1609
5 6
J1096
ERROR
J1130
GND
J1095
PWM-SEL
BL-ADJ
BL-SW
ERROR
GND
24V
C1807
C1802
8 IC1401 1
9
16
R1605
R1436
J1015
CS
BA01P0F01033