Audio Amplifier (2X5W) (20 & 23")(Diagram I) - Philips LC4.1U AA Service Manual

Circuit Diagrams and PWB Layouts
Audio Amplifier (2x5W) (20 & 23 inch)
1 2
AUDIO AMPLIFIER (2x5W) (FOR 20 & 23 INCH)
A
AUD_SUP
1703
I701
1
I702
2
P_GND
4710
B
P_GND
C
1706
1
2
3
4
5
D
5710
F705
SCREW MOUNTING HOLE
1710
TYPE
E
EMC
2747
470p
EMC
2748
470p
P_GND
3139 123 5883.1
1 2
LC4.1U AA 7.
3 4
F702
3714
R
8K2
3715
1K8
F703 3726 I718
L
8K2
AUD_SUP
F704 7703-1
STANDBY
BC847BS
I705
3748
2V8
10K
AUD_SUP
3702
3K3
AUD_SUP 3747
10K
4V5
I703
3749
7703-2
BC847BS
2V8
10K
3V3
3701
3K3
F706
MUTE
F702 F703
50mV / div AC 50mV / div AC
2ms / div
3 4
EN 37
5 6
2712
I712
1u0
I709 *EMC
2741
470p
2718 I719
7709
1u0
15
*EMC TDA 7297D
3727 2742
1K8 470p
14
1V4
IN1
AUD_SUP
1V4 7
IN2
3746
10K
3706
I704 I713
4V5
4V5 12
ST_BY
10K
4V5 13
MUTE
3750
6K8
2703
10u
3V2 16V
SGND
8
I706 3744
I728
10K
2746
3751
6K8 1u0 10V
I707 I711
200mV / div AC 200mV / div AC
2ms / div 2ms / div 2ms / div
5 6
7 8
AUD_SUP
(10V)
11V2
2715
2713 2719 2714
100n 100n 470u 16V 470u 16V
TO 1107 OF SIDE AV
P_GND P_GND P_GND P_GND
6
VCC 1704
5V7
19 I707
OUT1+
I708
5V7
16 I710
OUT1-
Φ
I711
I714
POWER
2 5V7
AMPLIFIER
OUT2+
5 5V7
OUT2-
P_GND
18
17
9
NC
4 5V7
3 5V7
PW GND
20 11 10 1 21
P_GND
5709
7 8
1703 A1
1704 C8
1706 D1
1710 E1
2703 D5
2712 B4
2713 B6
2714 B7
2715 B8
2718 C4
2719 B7
2741 B5
2742 C5
2746 E5
A
2747 E1
2748 E1
3701 E3
3702 D4
3706 D5
3714 B4
3715 B4
3726 C4
3727 C4
3744 D5
3746 C5
B 3747 D3
3748 D4
3749 E2
3750 D5
3751 E5
4710 B1
5709 D7
5710 D1
7703-1 D4
7703-2 E3
7709 C6
F702 B2
C
1 F703 C2
2
F704 D2
3
F705 E2
4
F706 E2
5
I701 B1
I702 B1
I703 D3
I704 D5
I705 D4
I706 D5
I707 C8
I708 C8
D
I709 B4
I710 C8
I711 C8
I712 B5
I713 D5
I714 C8
I718 C4
I719 C5
I728 D6
E
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