Tv Board: Audio Ampl. (15"/17")(Diagram A9A) - Philips LC03E Service Manual

Circuit Diagrams and PWB Layouts
TV Board: Audio Amplifier 2x3 Watts (15"/17")
1 2
AUDIO AMPLIFIER 2x3 Watts
A9a
(15"/17")
FOR ITV
1232
LED_IN 1
A11
IR_IN 2
A11
STBY-LED 3
A11
A STATUS 4
A11
5
A11 IR_OUT 6
HMLINK
1702
1 4
2 5
3 6
SPPH4
B
A8 AUD_SW
A8 AUDIO-L
C
A8 AUDIO-R
D
A1 SOUND-ENABLE
A10 POWER-DOWN
A1 STAND-BY
E
F
*
1750 1752 4737 4738 4739 4740
MTV X X X X X YES
ITV YES YES YES YES YES X
1 2
LC03E 7.
3 4
1733
YKC21-3416
3
2
1
6731
BZX284-C6V8
6732
BZX284-C6V8
F732
3732
220K
3733
2732
2735
10u 50V
RES 7731
AN7522N
1n0
3735 2736
6
1V4
27K 1u0
3736
F735 2737
6K8 4n7
2740
8
1V4
1n0
F740
2741 F745
3740
9
2V7
27K 1u0
3741 2742
6K8 4n7
2731
33n
3746
1K0
+3V5
3745 2745
3V5 3K3 100u 50V
7732-A
74LCV08AD 14
5V3 1
GNDEARTH
3 3V5
2V3 2
7
7732-B
74LCV08AD 14
4
6
F755
5
3V5
7
+3V5
7732-C
74LCV08AD 14
9
3V3
8
3V5
10
2V9
3744
4K7
7
7732-D 0V
74LCV08AD 14
F743
3743
3V3 12 0V7
7744
11 BC847BW
3V5
1K0
13
2V9
2746
1u0 50V
7
QUAD 2-INPUT AND GATE
3 4
46
5 6
12-24DC-SUP_1
5733
22u
F731
2733 2734
220n 1m0 16V
CH1+ 2 6V2
CH1-IN
6V1
CH1- 4
CH2-IN
6V1
CH2- 10
VOL
6V1
CH2+ 12
2754 2758 2756
1n5 1n5 1n5
3 7 11
GNDHOT
+3V5
3758
4K7
3757
3V5
10K
3755 3756 2755
100R 1u0
RES
7756
BC847B
5 6
7 8 9
2750 10u 3750 120R
50
* 1750
3752 470R
2752 10u
50
* 1752
2751 2753
470p 470p
*
4738
F738
*
4
4737
F737
3
F736
F739
*
4740
*
4739
2757
1n5
F735 F736
20mV / div AC 20mV / div AC
1ms / div 1ms / div
F738 F740
50mV / div AC 20mV / div AC
1ms / div 1ms / div
3760
4K7
6755
3759
0V
F759
1K0
BAS316
3761
2K2
HP-SIDE-DET A1
OUT_MUTE A8
CL 36532023_012.eps
7 8 9
1232 A1
1702 A1
1730 A4
1731 A9
1732 B9
1733 A4
1750 A7
1752 B7
6 1731
2731 D5
5
2732 B4
4
2733 B6
2
2734 B6
3
2735 B3
7 A
2736 B3
8
2737 C4
9
2740 C3
1
2741 C3
HEADPHONE
2742 C4
2745 D4
2746 F4
2750 A7
2751 B8
2752 A7
2753 B8
2754 C6
B
2755 E6
2756 C7
2757 C7
2758 C7
3732 B3
3733 B4
1732
3735 B3
3736 C3
3740 C3
3741 C3
3743 F4
2
C
3744 F5
1
3745 D4
3746 D3
3750 A7
3752 A7
3755 E6
3756 E6
3757 E6
3758 E7
3759 E7
3760 E8
3761 F8
D
4737 C7
4738 B7
4739 C7
4740 C7
5733 A5
6731 A4
6732 A4
6755 E7
7731 B5
7732-A D3
7732-B E3
7732-C E3
E
7732-D F3
7744 F4
7756 F7
F731 B5
F732 B4
F735 C2
F736 C9
F737 C9
F738 C9
F739 C9
F740 C2
F F743 F4
F745 C4
F755 E3
F759 E8
110903