Philips 50PFL4909/F7 Service Manual page 49

Power Supply CBA Bottom 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.
6
CN601
C604
VH
C614
BC1601
BC1602
T1602
J1604
CAUTION ! :
2.5A 250V
ATTENTION : Utiliser un fusible de rechange de même type de 2.5A, 250V.
BA4GU5F0102 1
5 4
F602
C1618
Q602
J606
IC602
Vcc+15V
C615
D621
D623
D619
J607 C616
IC604
J601
C620
J605
D620
J610
IC601
Q601
R618
C605
D607
D605
C1612
R1624
C1626
J1613
J1612
C1615 J1620
D1603
Q1602
J1619
T1601
J1609
J1610
IC1601
Q1704
R1712
J1605
J1615
C1608
For continued protection against risk of fire,
replace only with same type 2.5A, 250V fuse.
3
J656
Q705
J664 J655
J659
CN501
C692
J658
D715
J663
J654
D660
C657
J662
D654
J1407
D658
C655
C1417
J1309
C656
C651
J1308
D650
C650
J666
C619
J1307
D652
C1317
J665
C1708
J1614
J1208
J1207
C1217
J1109
C724
D713
J1703
J1108
IC1702
D704
J702
J1702
J1107
C726 C1117
C1711 J701
J103
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.
2 1
CN1401
CN1301
Q1403
Q1401 R1404
J1410
J1403
A
J1416
R1415
J1402
CN1101
J1413
J1406
Q1303
J1303
B
J1317
IC1301
J1313
J1302
J1312
J1306
J1311
JS1235
J1316
Q1203
J1210 C
Q1201
J1203
IC1201
J1216
JS1135
J1272
J1202
J1211
R1210
J1212
J1206
Q1101
R1206
J1213
D1203 R1104
D1101A
J1103
D
J1269
IC1101
J1273
J1102
J1274
J1106
E
BA4GU5F01021