Marantz SR4000 Service Manual - Page 42

8-5 DOLBY PROLOGIC - CIRCUIT DIAGRAM 1 2 3 4 A B Subwoofer circuit +9A 4V +9,2V +9A 4V +9,2V 2785 100n C A 3 8 7780-A NJM4560M 1 3784 2783 22p 5 8 7780-B NJM4560M 7 6 2781 22p 2 1K 4 4 A A D 2780 3785 4V 330n 1K 4V 3783 4V 1K8 Subw out 2789 10u E 3788 100K 3780 10K 3781 10K 3782 10K 1701 XH-S 1 F701 2 F A 3 F702 4 F703 A 5 6 F704 A 7 8 F705 9 G F706 A Subwoofer out 1702 XH-S 1 F707 3720 2 F708 3719 1K H 3 F709 1K 3718 4 F710 +9A 1K 100p 2720 100p 2719 100p 2718 5 F711 +9,2V A 6 7 F713 F712 2702 Rt in Right In D D D 8 10u 9 A F714 2701 I 10u Lt in Left In 1 2 3 4 2788 10u 3747 470R 3748 470R 2763 470p 2762 470p 3712 4M7 2717 22u 8-5 5 6 7 8 9 10 11 12 13 1701 F1 1702 H1 3781 E2 3782 E2 2701 I2 3783 D3 2702 I2 3784 D3 2703 E9 3785 D4 2704 F9 3788 E4 2705 G9 4720 H13 A 4V 4V 4V 4V 3735 3736 2760 1u 3737 330K 2706 F9 4721 H13 A 2707 G10 5701 F12 2708 E12 7701 B8 12K 12K 2709 D7 7780-A C3 2710 D8 7780-B C4 2711 D8 F701 F2 3728 47K 2734 1n8 3727 47K 3734 12K A A A A A 2712 E8 2713 G10 F702 F2 F703 F2 2756 2714 F10 F704 F2 100n A 2715 D7 F705 G2 2716 E13 F706 G2 220p 100n 2750 22n 2748 100n 2746 47n 2744 220n 2742 4u7 2740 220n 2738 47n 2736 680p 2752 3740 15K 2753 3746 680R 2717 D6 F707 H2 4V B 2718 H4 2719 H4 F708 H2 F709 H2 2735 100n 2732 100n 2733 100n 3733 12K 2751 22n 2749 100n 2747 47n 2745 100n 2743 220n 2741 4u7 2739 220n 2737 5n6 4V A 2755 100n 7701 M62460 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 2720 H4 2723 D12 2724 D13 2725 D12 F710 H2 F711 H2 F712 I2 F713 I2 2754 680p 3745 6K8 L+R L-R VCA COMBINING NETWORKS MOS SFB SU EC MIX LPF 4V 3739 65 FULL WAVE RECTIFIER 66 LOG DIFFERENCE AMPLIFIERS DUAL-TIME CONSTANT AND THRESHHOLD SWITCHES MODIFIED B-TYPE NR DECODER + VOL 40 39 2731 2726 D12 2727 C12 2728 C13 F714 I2 F716 D8 F717 D8 3742 15K 3741 47K 2757 47K 3744 3743 67 BPF 68 69 BPF +9.2dB +9.2dB + 38 1n8 2730 37 A 10n 36 2729 2729 C12 F718 D8 2730 C13 F719 E9 2731 C12 F720 E9 C 2732 B12 F721 E9 2733 B12 F722 E9 D/A 3702 100K 3701 100K 100n +9A +9,2V 2715 100n 2709 100u A A 4V A A A 4V 680R 6K8 70 2758 71 100n F716 72 73 F717 74 75 4V F718 76 2710 77 3709 220u 78 100K 2711 79 3710 10u 80 220K IREF VREF SELECTOR 1 NOISE SEQUENCER SELECTOR LC R AUTO BALANCE VCA SERVO CENTER MODE CONTROL LRC SELECTOR 2 2 L-R L+R 2 AVcc VREFA +M +M +/ - -9.2dB ATT S' + SELECTOR 3 VOL VOL AGND + - MCU Interface DVdd TEST DATA SCK REQ CNT MIC 16kSRAM LOGIC 35 68n 2728 34 2727 100n A 33 100n A 32 2726 A/D 31 68n 30 2725 LPF 29 1n8 2724 28 2723 10n A 27 1u CLK 26 2759 VREFD A 25 22u AVdd DVss AVss 2734 B12 F723 H13 2735 B12 F724 H13 2736 B11 F725 H13 2737 B11 2738 B11 2739 B10 2740 B10 2741 B10 2742 B10 2743 B10 D 2744 B10 2745 B9 2746 B9 2747 B9 2748 B9 2749 B9 2750 B9 2751 B9 2752 B8 2753 B8 2708 100u 2716 100n 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 2754 C7 470p 2765 F722 47u 2703 F719 2704 10u F720 10u F721 5n6 2712 2761 A D D A A E 2755 B8 2756 B7 2757 C7 A A 3714 10K 3750 10K 3716 1M 5701 2758 C8 2759 D12 2760 A10 2761 E8 2762 D6 2714 10u 100n 3715 Left out L out 2706 A 4Mc CST 2763 D5 2764 F10 2765 E10 2780 D3 2764 6K8 1n Right out R out A D F 2781 D2 2783 D4 2785 C3 2788 D4 3703 100K 3704 100K 2705 3751 2789 E2 Center out A A C out 10u 15K 3749 18K +5V 3701 C6 3702 C5 3703 F9 3704 F9 3705 G9 3705 100K 3706 100K 2713 100n 2707 100u Surround out S out 3706 G9 3709 D8 G 3710 E8 3712 D6 3714 E10 3715 F10 A A D D 3716 E12 A 3718 H3 3719 H3 3720 H3 3727 B12 3728 B12 3733 B11 H 3734 B11 3735 A12 3736 A12 3737 A11 3739 C8 3740 B8 3741 C7 3742 C7 The mentionned points are indicated on the components side of the Dolby Pro Logic board. 3743 C8 3744 C8 3745 B7 3746 B7 I 3747 D5 3748 D5 file:dplcircuit755 3749 F10 3750 E10 updated 14-04-99 3751 F10 3780 E2 5 6 7 8 9 10 11 12 13