Philips 43PFL4901/F7 Service Manual page 52

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.
GP001
C1103
C1102
C1101
R1117
C1203
C1218
R1116
R1215
C1220
L1204
C1216
L1104
R1125
C1119 C1219
R1126
R1127
R1107
C1215
C1120
C1114
C1214
C1108
C1115
D1204
D1102
J166 J154
LDR1
VLED1 C1118
D1104 R1225
C1116
R1113 R1223
J147
R1104
D1203
D1103
R1123 SOURCE1
J149
R1124
J161 AMP+13V R1224
R1106
GND
D1106
J162
R1101
C1121 C1112
BL-SW
C1109
R1103
R1118
R1226
R1102 C1113
C1117
C1104 C1110 R1207
C1106 C1221
C1205
J163
R1203
PWM1
R1202
J142
R1110 C1204
R1109 EN2
C1206
R1209
C1107
R1120
R1108
R1132 C1111
R1111
R1131
R1112
R1206
J144
GND J164
R1121 PWM2
C1207
R1208
R1129 R1210
R1232
R1231 R1211 R1212
R1130
J165
Q1102
ILED1 R1230
R1229
R1128 R1201
BA4DV2F0102 3
CAUTION ! :
2.5A 250V
ATTENTION : Utiliser un fusible de rechange de même type de 2.5A, 250V.
C657
C658
R657
R654
R655
C653 D660A
C666
C1201
C1202
C660
R658
R1217
R661 C669 J108
J121
GND Q653
R1216
R660 GND
R659
R668
R669
D661
R667 C603
R674
R675
C652
D659
D650
J134
D659A
P-ON+21V
C659
C639
D651
D650A
GP005
D651A
D652 T601
L1203
JS1201
D652A
D658
C1208
C650
R650
D1202
R1213
Q1002
D654A
R1005
R1002
D658A
R1204
R1003
J120
P-ON-H2
D1206
R1004
R1001
D653
J123
C1209
AMP+13V
R1218
Q658 D653A
C1212
D655
R676
C661
R690
D664 R651
R673
D655A
C1213
C1210 R670 C654
R672 D656A
C638
R671
J116
R1220
ALL+3.3V
D657
C665
R663
C663
R652
R656
R694
C655
R1221 R662
J117
R680
Q650
R682
P-ON-H2
R1219
J109
C1211
GND
R1228
R681
J107
Q650Base
J122
D662A
GND
C651
CN501
For continued protection against risk of fire,
replace only with same type 2.5A, 250V fuse.
R609
R606
D609A
C608
C617
R608
IC601
Q621
Q602
R607
C609
R622
R612
D605
C610
C621
R613
C622
D608A
D610
R623
R621 C606
C623
D623 C607
D621
D607A
R604
R603
R614
D606A
C612
R617
R616 R615
C604
10-14
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.
C618
+B JS605
+B JS604 D604
+B JS603
D603
J101
FG
C614
BA4DV2F01023