Philips 43PFL4902/F7 Service Manual page 59

Power Supply CBA Top View
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.
1
GP003
J1442
LIVE
J1436 ZCDB
F602
T 2.5A L/250V
CAUTION -
RISK OF FIRE -
REPLACE FUSE AS MARKED
NEUTRAL J1439
ZCDA
J1438
SA601 PRI-GND
C604 J1437 ZCDB
R601
BC1602
D603
D604
C620 J1447
GP004
2.5A 250V
BAA7U1F0102 1
2
VSENSE
C1703
J1441 PFC-GND
J1444 Vcc
J1440 GDB
T1601
J1445 T1701-2
T1701-4
J1446
C1702
D1603
D1605
J1487 PFC-VOUT
J1489 PFC-VOUT
J1433 PFC-VOUT
J1432
PFC-VOUT
D607 C1621 C1622
C1602
BOND BOND
D605-Cathode
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.
3
IC1602
J1470 ALL+3.3V
T1702
J1476
T1701
C618
HOT
C605
R618
Q601
BC602
J1452 IS
J1486 PFC-GND
J1457 VH
J1455 OUT
J1460
D610-Cathode
10-16
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.
4
C1016
C1020 C1015 C1019
J1463
IS
J1480 BL-ADJ
N1
J1475
C1002
N2
COLD
D655
D651
T601
D652
C658
IC602
D655-Cathode
D621
5
CN1001
GP002
J1482
P-ON-H2
J1479 OVP
J1462
Protect3
J1477 BL-SW
C657
CN651
J1471 P-ON+20V
C656
C655
C664
P-ON+20V
J1466
J1467 P-ON+20V
J1468
P-ON+20V
J1469 P-ON+20V
C654
J1490
GND
GP001
J1464
BAA7U1F01021