Philips PET742 Service Manual page 18

5
MAIN BOARD AUDIO&VIDEO CIRCUIT DIAGRAM
D
R118
C95
R120
C96
R119 10K 5.1K
AOUT_L R0402 R0402
10uF
R123 C97
NC 1000pF
R0402 C0402
R124
R125 33K
R0402
C99
R128
C102
R127 10K 5.1K
AOUT_R R0402 R0402
VER
10uF
R131 C103
NC 1000pF
2 2 R0402 C0402
C C
C
1 B E 3 1 B E 3
2N3904 2N3906
L35 FB600R
DC_IN
L-0805
EC27
22uF/25V
7/5
B
A
5
4
33K
R0402
100pF
C0402
U8A
R122
EC25 10uF/16V R121 360R
2
1 4/5 R0402 AV-OUT-L A_L_SPEAKER
3
NJM4558-SOP-8 C98 24K
SOP8
R0402
820p
C0402
+Vcc
AC
100K
R0402
100pF
C0402
U8B
EC26 10uF/16V R129 360R R130
6
4/5 R0402 AV-OUT-R A_R_SPEAKER
7
5
24K
NJM4558-SOP-8 R0402
SOP8
C104
820p
C0402
39K
R138 R139 100K
+Vcc R0603 AC R0603 VER
C105 R140 C106
+ +EC28
0.1uF 43K 0.1uF 47uF/16V
C0603 R0402 C0603 7/5
4
3
L32 1.8uH
CVBS
L-0805
R126 C100
100pF
75R 1% C0402
R0402
C 2 C 2 2 2
1 B E 3 1 B E 3 1 1 3 3
2N3904 2N3906 BAV99
DC_IN
Q22 2307
VCC9
1 3
SOT23
EC29
+
22uF/25V
7/5
D16
IN4148 R143
100K
1N4148/SMD
R0402
EC30
100uF/16V
6.3/5
EC31
R145 C108
100uF/16V
6.3/5
10K 150P U9
R0402 C0402
10uF/16V
L_HP_IN
EC32 R146 56K 7
R0402
1
4/5
8
R_HP_IN EC34 10uF/16V R147 56K 6
4/5 R0402 3
5
APA2822
R149 C113 EC36 SOP8
+
100uF/16V
6.3/5
10K 150P
R0402 C0402
VJ2
L_HP_IN
1
1
A_R_SPEAKER
2
2
3
3
A_L_SPEAKER
4
4
R_HP_IN 5
5
VOLUME 10K
VRS
3
2
L30
FB2K2
L-0603
AV/OUT-JACK JACK1
AV-JACK1
AV-OUT-L L31 FB2K2
R0402
6
CVBS_OUT 6
L33 FB2K2
2
R0402 7
7
AV-OUT-R L34 FB2K2
C101 R0402
100pF
C0402
R0402 R0402 R0402 R0402 R0402 R0402
+
C107
0.1uF
C0603
R144 200R
R0603
L36 FB2K2
C109 R0603
0.1uF
C0603
9 VER1
10
earphone
11
EARPHONE
EC33 100uF/16V L37 FB2K2
6.3/5 L-0603
EC35 100uF/16V L38 FB2K2 R148 200R
6.3/5 L-0603 R0603
C110
C111 C112
0.1uF
0.1uF 0.1uF C0603 VJ1
C0402 C0402
SPR 1
1
R150 R151 2
SPL 2
3
4.7R 4.7R 3
C114 4
R0402 R0402 4
0.1uF
C0603
speaker
DIP4-1.25
C115
0.1uF
C0603
2
1
AOUT_L
2 AOUT_L
AOUT_R
2 AOUT_R
D
CVBS
CVBS 2
DC_IN
DC_IN 1
C
B
A
1