7.
Circuit Diagrams and PWB Layouts
TV Board: Audio Amplifier 2x3 Watts (15”/17”)
2753
470p
F732
50
10u
2750
2V9
0V7
0V
3V5
YES
F731 B5
YES
11V8
3759 E7
RES
A1
ITV
A8
A8
A1
6V1
F732 B4
F735 C2
3755 E6
3756 E6
3757 E6
3758 E7
3760 E8
(15"/17")
4740
2V9
4737 C7
2752 A7
A8
A8
A10
2750 A7
*
2751 B8
4739
2746 F4
3761 F8
1750
2745 D4
7732-B E3
16 OHMS / 3 W
7732-C E3
*
*
X
7732-D F3
X
*
7744 F4
X
7756 F7
MTV
AUDIO AMPLIFIER 2x3 Watts
3752 A7
3750 A7
8
3V5
3V3
3746 D3
X
A11
2756 C7
2757 C7
2758 C7
3732 B3
3733 B4
3735 B3
3736 C3
4
5
6
7
1752 B7
2731 D5
2732 B4
2733 B6
2734 B6
2735 B3
2736 B3
0V
1
2
3
4
5
6
7
8
9
1
2
3
X
B
9
A
YES
4740 C7
F745 C4
F755 E3
QUAD 2-INPUT AND GATE
F759 E8
4738
4737
5733 A5
1V4
6731 A4
2V7
4739 C7
6732 A4
X
YES
F736 C9
3744 F5
7731 B5
6755 E7
RES
YES
3V5
*
YES
6V1
*
A1
7732-A D3
3745 D4
3V3
4738 B7
3740 C3
3741 C3
3743 F4
A11
1752
A11
2V9
1V4
*
3V5
5V3
2V3
3V5
HEADPHONE
2755 E6
6V2
3V5
2737 C4
2740 C3
2741 C3
2742 C4
D
E
F
1232 A1
1702 A1
2753 B8
2754 C6
3741
6K8
FOR ITV
HMLINK
A11
A11
F737 C9
F738 C9
F739 C9
F740 C2
F743 F4
6V1
C
D
E
F
A
B
C
1730 A4
1731 A9
1732 B9
1733 A4
1750 A7
1K0
3743
BC847BW
7744
1K0
3759
1732
1
2
3
4
1n0
2735
27K
3735
10K
3757
3
7
8
9
1
1731
6
5
4
2
2734
2752
10u
50
16V
1m0
F759
120R
3750
4
3
6
F738
1702
SPPH4
2
5
1
2757
1n5
1n5
2756
2758
1n5
1u0
2736
220K
4737
3732
5733
22u
4739
F731
F735
+3V5
3755
100R
12-24DC-SUP_1
3756
7732-C
74LCV08AD
9
10
8
14
7
1752
1750
F743
BZX284-C6V8
6732
1u0
2741
YKC21-3416
1733
1
3
2
GNDEARTH
CH2-IN
3
GNDCH1
11
GNDCH2
7
GNDINP
5
STB
1
VCC
9
VOL
2
CH1+
4
CH1-
6
CH1-IN
12
CH2+
10
CH2-
8
14
7
7731
AN7522N
7732-D
74LCV08AD
12
13
11
1n5
2754
50V
100u
2745
50V
10u
2732
2742
4n7
1K0
3746
4K7
3760
GNDHOT
2740
1n0
F736
2
3
4
5
6
F737
1232
1
F739
4738
27K
3740
3
14
7
3K3
3745
7732-A
74LCV08AD
1
2
2755
1u0
2746
2737
50V
1u0
4n7
F755
4740
BZX284-C6V8
6731
2K2
3761
3733
+3V5
7756
BC847B
4
5
6
14
7
1730
7732-B
74LCV08AD
F740
220n
2733
33n
2731
BAS316
6755
F745
470R
3752
4K7
3744
3758
470p
2751
4K7
+3V5
3736
6K8
OUT_MUTE
POWER-DOWN
STAND-BY
LED_IN
STBY-LED
STATUS
IR_OUT
IR_IN
AUD_SW
SOUND-ENABLE
AUDIO-L
AUDIO-R
HP-SIDE-DET
CL 36532023_012.eps
110903
F735
20mV / div AC
1ms / div
F736
20mV / div AC
1ms / div
F738
50mV / div AC
1ms / div
F740
20mV / div AC
1ms / div
A9a