Circuit Diagrams and PWB Layouts
7.
TV Board: Audio Amplifier 2x5 Watts (23”)
ATT.
CON
RIPPLE
ATT.
FILTER
AUDIO AMPLIFIER 2x5 Watts
A9b
6V
3V7
6V2
2V9
0V3
5V2
6V1
MTV
ITV
1750
X
YES
4737
X
YES
*
*
X
YES
4739
X
YES
4738
4740
YES
X
*
*
RES
RES
*
*
HEADPHONE
A1
A10
A1
A8
A8
A8
A1
A8
8 OHMS / 5
W
QUAD 2-INPUT AND GATE
(23")
A11
A11
A11
A11
A11
FOR ITV
NC
NC
3750
YES
X
YES
X
3752
HMLINK
0V
3V5
0V
0V7
3V5
2V3
2V9
2V3
2V9
3V5
3V5
2V3
5V3
3V5
3V5
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
A
B
C
D
E
F
1232 A1
1702 A2
1730 B3
1731 A9
1732 C9
1733 A4
1734 B9
1750 A7
1752 B7
2732 E5
2734 E7
2735 B3
2736 B4
2737 C4
2738 D6
2739 D6
2740 C3
2741 C4
2742 C4
2743 D6
2744 D6
2745 D5
2746 F3
2747 D5
2751 B8
2753 B8
2755 E6
2759 A8
2760 A9
2796 D6
2797 E6
2798 E7
2799 D5
3733 E5
3735 B3
3736 C3
3739 D3
3740 C3
3741 C3
3743 F3
3744 F4
3745 E5
3746 F4
3747 D4
3748 D4
3750 A7
3752 A7
3755 E6
3756 E6
3757 E6
3758 E7
3759 E7
3760 E8
3761 F8
3799 E4
4738 B7
4739 C7
4740 C7
5733 D7
6731 B3
6732 B3
6755 E7
7731 B4
7732-A D2
7732-B E2
7732-C E2
7732-D F2
7739 D4
7744 F3
7745 F5
7756 F7
F731 D7
F732 E5
F735 C2
F736 C8
F737 C8
F738 C8
F739 C8
F740 C2
F743 F3
F745 D5
F755 E2
F759 E8
RES
RES
2759
1n0
1n0
2760
2797
1n0
1n0
2796
2798
220n
12-24DC-SUP_1
BC847BW
7745
1K0
3746
4K7
3745
6732
BZX284-C6V8
6731
BZX284-C6V8
1730
2744
1n5
2743
2747
1n5
+3V5
1734
1
2
3
33n
1K0
3739
BC847B
7739
50V
100u
2799
50V
330u
2739
GNDEARTH
50V
330u
2738
1232
1
2
3
4
5
6
1
4
3
6
1702
SPPH4
2
5
YKC21-3416
1733
1
3
2
1u0
2741
1u0
2736
5733
22u
F735
F740
+3V5
4K7
3744
BC847BW
7744
F743
F759
3
7
8
9
1
F755
1731
6
5
4
2
GNDHOT
3755
100R
F739
F736
F738
F737
F731
F745
F732
50V
1u0
2746
4740
+3V5
1K0
3743
7732-D
74LCV08AD
12
13
11
14
7
6
14
7
7732-C
74LCV08AD
9
10
8
14
7
1
2
3
14
7
7732-B
74LCV08AD
4
5
1752
7732-A
74LCV08AD
1750
8K2
3748
4K7
3747
25V
100u
2745
BAS316
6755
+3V5
2755
1u0
7756
BC847B
3756
10K
3757
1K0
3759
1K0
3761
3758
4K7
4K7
3760
470R
3752
470R
3750
470p
2751
4738
2753
470p
4739
9
GNDO
8
MUTE
1
NC1
6
NC2
3R
F
11
STBY
10
VCC
2
CH1I
12
CH1O
5
CH2I
7
CH2O
4
GNDI
7731
AN5277
35V
1m0
2734
50V
10u
2732
GNDEARTH
12-24DC-SUP_1
2740
2735
1
2
3
4
1732
3733
2737
2742
3n3
18K
3740
3n3
18K
3735
3741
3K3
3736
3K3
3799
220K
LED_IN
IR_IN
STBY-LED
STATUS
IR_OUT
AUDIO-L
SOUND-ENABLE
POWER-DOWN
STAND-BY
OUT_MUTE
AUDIO-R
AUD_SW
HP-SIDE-DET
CL 36532054_004.eps
110903