Philips 75PFL5704/F7 Service Manual page 80

Power Supply CBA Bottom View
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F601) 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.
PROTECT3
RESET
BL-SW
P-ON-H2
BL-ADJ
ALL+3.3V
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
P-ON+20V
P-ON+20V
P-ON+20V
P-ON+20V
P-ON+20V
P-ON+20V
P-ON+20V
P-ON+20V
P-ON+20V
P-ON+20V
CN651
J1013
GND
J1004
IC1001 VS
IC1001-VS
J1009
J1005
PROTECT3
J1006
BL-ADJ
CN1001
GP005
4A 250V
C618
IC1602
J606
IC1602
R672
PWMCNTL
IC602
COLD
J609
P-ON H2
C617
J610
P-ON +20V
J611
ALL+3.3V
T601
D651
C665
C653A
COLD R618
HOT
D652
C607
C624
C1617
C658
C1701
J1010
J1001
T1701
IC1001-Vcc
R1055
R1053
J1011
R1015
C1001
D1004
D1001
D1002
D1003
C1018
D1023
D1020
D1022
D1021
5 4
CAUTION ! : For continued protection against risk of fire,
replace only with same type 4A, 250V fuse.
ATTENTION : Utiliser un fusible de rechange de même type de 4A, 250V.
J1601
BC1601
VINAC
J1604 C1614
VREF
C
Q1601
J617
C622
IC603 GDB
J1605
J1616
PFC GND
J1615
PFC GND
D1601
BC601
R1601
R609
R608 R620
R1602
J1609
PFC CS
J1612 J1610
J602
PFC VOUT
PFC VOUT
D604 Cathode
J601 C1621
J1613 J1611
PFC VOUT
J616
PFC VOUT
C1623 C1622
C1615
C1619
T1703
C1703
C604
J1703
PFC GND
J1702
PFC GND
J608
D604 Cathode
Q1701
L601
J1701
PFC VOUT
J1704
PFC VOUT
T1702
J1707 C601
GATE
R601
Q1702
F601
SA601
CN601
J1705
PFC GND
J1706
PFC GND
3
10-25
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.
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
C1613
Q1602
J1602
IC1601 GDA
L1601
GP002
D1602
J1614
PFC VOUT
J1608
PFC VOUT
D605 L1602
HOT
R1624
J1017
J1012
PFC GND
PFC !2 GND
C1612
C1616
D604
D603
BACG9AF0102 1
L602 L603
C623
C619
TH602
GP001
C620
2 1
BACG9AF01021