Dolby Prologic - Circuit Diagram - Marantz SR3000 Service Manual

DOLBY PROLOGIC - CIRCUIT DIAGRAM

1 2
A
B
4V
C
D
E
1701
XH-S F701
1
2
F
A
F702
3
4
F703
A
5
F704
6
A
7
F705
8
9
G
F706
1702
XH-S
1 F707
F708
2
H
3 F709
F710 +9A
4
+9,2V
5 F711
A
6
F712
2702
7
F713
8
A
2701
F714
9
I
1 2
8-5
3 4 5
Subwoofer circuit
+9A +9A
+9,2V
+9,2V 4V
A
7780-B
5
8
NJM4560M
7780-A
3 8 7
NJM4560M
3784
1 6
4
1K
2
4
A A
2780 3785 4V
330n 1K
4V
3783 4V
1K8
Subw out
A
Subwoofer out
3720
3719 1K
1K 3718
1K
Rt in Right In
D D D
10u
10u Left In
Lt in
3 4 5
6 7 8
4V 4V
A
2756
100n
4V
7701
A M62460
65
3739 66
4V
47K 67
3741 68
47K 2757 3744 3743 69
70
100n 680R 6K8
2758 71
72
100n
F716
73
F717
74
+9,2V
+9A 75
4V 76
F718
2710
77
3709 78
220u
A A A A
A
2711
79
100K
3710 80
10u
4V
4V 220K
A A
Left out
R out
Right out
C out
Center out
Surround out
The mentionned points are indicated on the components side of the Dolby Pro Logic board.
6 7 8
8-5
9 10 11
A
4V 4V 3735
12K
A A A A
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44
FULL WAVE LOG MODIFIED -
DUAL-TIME CONSTANT
DIFFERENCE B-TYPE +
RECTIFIER AND THRESHHOLD SWITCHES
AMPLIFIERS NR DECODER
+9.2dB
BPF
+9.2dB
BPF
+
L C R
AUTO
SELECTOR
CENTER
BALANCE
MODE
VCA
SELECTOR 2
CONTROL
SERVO
L R C
-9.2dB
ATT
AVcc
S'
+ - + -
+
/ +
-
M M
VREFA
SELECTOR 3
CLK
MCU Interface
AGND DVdd
+
VOL VOL DATA SCK REQ
- TEST
CNT
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
A D
A
L out
A
3751
+5V
15K 3749
A A
18K
S out
A A D D
9 10 11
12 13 1701 F1
1702 H1
2701 I2
2702 I2
2703 E9
2704 F9
2705 G9
2706 F9
A
2707 G10
3736
2708 E12
12K 2709 D7
2710 D8
2711 D8
2712 E8
2713 G10
2714 F10
2715 D7
A
2716 E13
2717 D6
2718 H4
4V B
2719 H4
2720 H4
2723 D12
2724 D13
43 42 41
2725 D12
40 2726 D12
VOL
2727 C12
39 2731
2728 C13
2729 C12
38 2730
1n8
2730 C13
A
37 2731 C12
10n
C 2732 B12
36
2729
2733 B12
2734 B12
35 2728
68n
2735 B12
A
34
2727 2736 B11
100n
2737 B11
A
33
100n
2738 B11
2739 B10
32
2726
2740 B10
31 2741 B10
68n
2742 B10
30 2725
2743 B10
D
2744 B10
29 2724
1n8
2745 B9
A
28 2723 2746 B9
10n
2747 B9
27
1u
2748 B9
2759 2749 B9
26
2750 B9
VREFD
A
2751 B9
25 22u
AVdd
2752 B8
DVss AVss
2753 B8
2754 C7
2755 B8
E
2756 B7
D A A
2757 C7
2758 C8
3716
2759 D12
2760 A10
1M
2761 E8
5701
2762 D6
2763 D5
4Mc
2764 F10
2765 E10
CST
2780 D3
F 2781 D2
D
2783 D4
2785 C3
2788 D4
2789 E2
3701 C6
3702 C5
3703 F9
3704 F9
3705 G9
3706 G9
3709 D8
G
3710 E8
3712 D6
3714 E10
3715 F10
3716 E12
A 3718 H3
3719 H3
3720 H3
3727 B12
3728 B12
3733 B11
3734 B11
H
3735 A12
3736 A12
3737 A11
3739 C8
3740 B8
3741 C7
3742 C7
3743 C8
3744 C8
3745 B7
3746 B7
I 3747 D5
3748 D5
3749 F10
file:dplcircuit755
3750 E10
updated 14-04-99 3751 F10
3780 E2
12 13
3781 E2
3782 E2
3783 D3
3784 D3
3785 D4
3788 E4
4720 H13
4721 H13
5701 F12
7701 B8
7780-A C3
7780-B C4
F701 F2
F702 F2
F703 F2
F704 F2
F705 G2
F706 G2
F707 H2
F708 H2
F709 H2
F710 H2
F711 H2
F712 I2
F713 I2
F714 I2
F716 D8
F717 D8
F718 D8
F719 E9
F720 E9
F721 E9
F722 E9
F723 H13
F724 H13
F725 H13