Grundig M 37-DC Bedienungsanleitung Seite 38

Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
Cassettenteil / Tape Part
Teil 1 / Part 1
1 2 3 4 5
A
SELECTOR IC
B
S3b
12 11
0V
(1701)
REC-L S4b
S2b
C
S1b
3736
14 15
0V 0V
18k
PLAY BACK
DECK A 1730
S0b
3704 16
0V
3 220
L
2
D
A HEF4952BT 7710
R
1
(1701)
REC-R A
1711
1 13
E
TEST 2
3703
0V
220
CONNECTOR
1
3 S0a
3735
0V 0V
REC/PB 4
18k
3 2
DECK B S1a
1720
F
1 S2a
L
S4a
2
A
3701
0V 0V
220
3
5 6
S3a
R
12
4
HEF4952BT 7710
G
5
-9V
V 4
BIAS EE
13 8.0V
V +C
6 DD
8
V
SS
Erase BIAS
Head A SYMM.
A A A S S S S S
2 1 0 0 1 2 3 4
3785 STOP 0 0 0 1 1 A
100k Pb deck A 0 0 1 1 1
H
Pb deck B 0 1 0 1 1
0 1 1 1 1 1
REC (line in) 1 0 0 1 1
1
Dubbing 1 0 1 1
7785 7786
1 1 0 1 1
A
J111 J111
1 1 1 1
5702 A A A S S S S S
2 1 0 0 1 2 3 4
2u2
I
10 9 7
3783 A A
(7750)
1A0
4k7
3781 1A1 (7750)
4M7
-C
-9V
6775
6774
J
A 1N4148
1N4148
7784
REC 3787
6773
2786 3780 3779
BC856B
1M
(1702)
1M 330k
100p 1N4148
-19V
2741
K 4n7
A A P
A
+12V
3762 3761
820 10k
L
P A
11.8V
7783
7782 BC848C
16
BC558C
11.2V
5.0V
3770 3771
BIAS
5701 1k5 1k2 P
M BIAS
2.3V LEVEL
3
4 +12V
2782
2 5
P
7781
7788
A 4n7 BC848C P
5.0V
BC848C
6776
3777 3776
2783
1 6
150R 6k8
MT 1N4148
100n
0.3V 3786
N
2k2
7780
BC848C
P P P P P P
A
14.6.96
1 2 3 4 5
T161 N 1 T170 M 6 T179 C 2 T188 L 3
T162 G 2 T171 E12 T180 L21 T189 D 7
T163 G 2 T172 B12 T181 K21 T190 A12
T164 F 2 T173 K18 T182 G20 T191 B12
T165 F 2 T174 H21 T183 E20 T192 G19
T166 F 2 T175 L18 T184 M20 T193 I17
T167 D 2 T176 H19 T185 M20 T194 N18
T168 D 2 T177 E 9 T186 M20 T195 M 4
T169 D 2 T178 E 3 T187 N 6 1701 K21
4 - 13
6 7 8 9 10
REC.EQUALISATION
3726
0V MUTE
220k
16 S0b
2724 0V
180p 14 15
S1b A
S2b
2720 3722
2718
A 5k6
S4b
18n
2n2
3720
2728 0V 0V
8k2 3k9
680p 12 11
S3b 3718
3724 HEF4952BT 7730
12k
LEFT CHANNEL
2765 PLAY BACK
1 7720
3706
0V 10 2 A
A 9.8V 0V
220
47u EQUALISATION
9
15 2714 3714
4.8V
13
AN7318S
2k2
10u
14
3708 1
11
100
ALC 3728
1.2V A 2730
16 2738 5k6
A
3764 0V 27n
+12V 9.8V 3730
0V
470
3712 22n 2k7
180k
2734
3732
0V
A 5k6
470p
REC/Pb-AMPLIFIER
A
A
3765 7787
2762
BC848C
39k
3760
A 2u2
47k
2A2
1
(7750)
7720
A 3705 2
A A A ALC DELAY
0V 7
A 0V
220
5
8 3713
2 2713 0V
RIGHT CHANNEL 4.8V
4
AN7318S 2k2
10u
3
3707 5
6
100 ALC
1.2V 1.8V
12
0V 3727 2729
A
5k6
3763
7.3V
27n
180k 2737
A 3729
0V
3
2k7
22n
-C
3711
180k 3731
0V 1
5k6
2733
470p
A
A
3717 HEF4952BT
2727
3k9
7740
680p
HEF4952BT 7730
S3a 0V A A
3723 3719 2
5 6 2717
0
12k 8k2
0V 2n2
STOP 0
3721 0
S4a 2719
5k6 REC 0
S2a 18n
HS Chrome 1
Pb Chrome 1
1
Pb Ferro
S1a 1
3 2
0V A A
2
10 9
S0a
3725 1
A
0V
220k
-C
V 4
-9V
HEF4952BT EE
V 13
+C
A 7730 DD
V 8
8.0V
SS
+C A
A A A S S S S S
2 1 0 0 1 2 3 4
To 7710 0 0 0 1 1
7730 NS Ferro 0 0 1 1 1
7740 HS Ferro 0 1 0 1 1
7760
REC MUTE 0 1 1 1 1 1
REC MUTE 1 0 0 1 1
NS Chrome 1 0 1 1 1
HS Chrome 1 1 0 1 1
REC MUTE 1 1 1 1
A A A S S S S S
2 1 0 0 1 2 3 4
10 9 7
3A0 (7750)
3790
3A1 (7750)
47k
(7750)
CR 3A2
(1702)
REC
(1702)
6 7 8 9 10
1702 M20 2634 C16 2643 J17 2694 I16
1705 A12 2635 G17 2644 A17 2695 G20
1706 M21 2636 D17 2645 J17 2696 D20
1711 E 1 2637 G20 2646 A17 2701 E 3
1720 F 1 2638 D20 2647 J16 2702 D 3
1730 D 1 2639 J18 2648 B16 2703 E 4
2631 H19 2640 B18 2691 G20 2704 D 4
2632 B19 2641 I18 2692 G19 2705 E 4
2633 F16 2642 A18 2693 G18 2706 D 4
M 37-DC Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
11 12 13 14 15 16
3668
47k
2648
4u7
HEF4952BT 7760
S3b
12 11
3632
47k
S4b
HEF4952BT 7740 S2b
S3b
7634
12 11
S1b BC848C
14 15
A
S4b
S0b
S2b
Vref
16
6.1V
S1b
14 15
4640
0V
S0b
16
HEF4952BT 7760
S3a
5 6
HEF4952BT 7740 S4a
S2a
S3a
6
Vref
6.1V
S1a
S4a 3 2
S2a
S0a
1
S1a
2
0V
4639
S0a
3667
-C
47k
-9V
4
V
HEF4952BT EE
13
V +C
7760 DD 3631
-C 8
V 8.0V
47k
SS
-9V
4
V A
EE
A A A S S S S S
2 1 0 0 1 2 3 4 3635
13
V +C
DD
o/p mute 0 0 0 1 1
8.0V 20k
8
V
SS o/p mute 0 0 1 1 1
A
0 1 0 1 1 7633
BC848C
A S S S S S 0 1 1 1 1 1
1 0 0 1 2 3 4
0 0 1 1 Pb deckB 1 0 0 1 1
A
1 DECK-B R PB-LEVEL
0 1 1 1 1 0 1 1
1 0 1 1 1 1 0 1 1
1 1 1 1 1 1 1 1 1
0 0 1 1 A A A S S S S S
2 1 0 0 1 2 3 4
0 1 1 1
1 0 1 1 10 9 7
1 1A0
1 1 A
A S S S S S
1 0 0 1 2 3 4 2A2
2647
7
4u7
2A0
(7750)
2A1 (7750)
2A2 (7750)
2A0
2A1
2A2
1A1
P
Deck A = Deck 1
3A2
Deck B = Deck 2 3A1
3A0
1A0
11 12 13 14 15 16
2707 E 5 2716 E 6 2725 K 5 2734 D 8
2708 D 5 2717 I 9 2726 A 5 2735 H 6
2709 F 7 2718 B 9 2727 H 6 2737 G 9
2710 D 7 2719 I 8 2728 B 6 2738 D 9
2711 F 8 2720 B 8 2729 F11 2740 J 2
2712 D 8 2721 J 6 2730 D11 2741 K 4
2713 F 9 2722 A 6 2731 E12 2752 K 4
2714 C 9 2723 J 5 2732 C12 2760 L 5
2715 G 6 2724 A 6 2733 G 8 2761 D 7
GRUNDIG Service 4 - 14
17 18 19 20 21
3666 3664 3662
82k 180k 470k
2646 2642 3660
Vref 6.1V
33k
Vref
10p 4u7
6.1V
7640 6.2V
REC-LEVEL-L
1 NJM4560
6
2
7
3658
5
6.1V
1k
4
6.2V
A
2632
47n
3636 3634 3642 3640
20k 3k3 20k 3k3
3638 3644
1A0
1A1
7632
47k 47k
BC848C
(7750) (7750)
14
A
DECK-B L PB-LEVEL DECK-A/DCC L PB-LEVEL
(7750)
2A2
A A
A
1 6
3652
6.1V
1k
3 4 16 15 14 13 12 11 10 9
5632
CXA1101M
7630
1 6
1 2 3 4 5 6 7 8
3651
1k
3 4
5631
+12V
3694 A
10R
2631
A
A
47n
3641
3633 3639
DOLBY A
3k3 20k 3k3 (1706)
Vref
3637 3643
1A1 7631 1A0
47k BC848C 47k To: 3655
(7750)
(7750) 3656
A
3659
DECK-A/DCC R PB-LEVEL
15
+12V
3695 3693
68R 68R
3659
2641 Vref
6.2V
7640 8 33k
1
REC-LEVEL-R
2 NJM4560 2 4u7 6.1V
A
1
3657
6.1V 3
1k
6.2V
2645
10p
3665 3663 3661
82k 180k 470k Vref
to 56 AF
page 4 - 25
1701
To 7710 7730 -C 3768
10 7740 7760
10k 1
-CMOS
3781
3746
-9V
4k7 2 TAPE-L
3745
4k7
3 TAPE-R
To: 3693 3764 6770
4
+12V +12V
11 3694 3778
3762 3789
5 GND A
A
A A To 3736 6 REC-L
7
To 3735 REC-R
1706
1 STROBE
2 DATA
3
CLK
P
To 3779 P 4 GND P
7750
6774
HEF4094BT
3786 5 REC
+12V
6
To 3790 CRO2
3767
7
330R To 3690 DOLBY
5.1V
to 22 Front
page 4 - 8
P P
17 18 19 20 21
2762 E 8 2785 N 2 3636 C17 3645 G16
2763 E 8 2786 J 1 3637 H17 3646 D16
2765 C 8 2787 K 3 3638 C17 3647 G16
2767 N18 2788 M18 3639 H18 3648 E16
2780 N 4 3631 H16 3640 C18 3649 G17
2781 N 3 3632 B16 3641 H18 3650 D17
2782 N 3 3633 H17 3642 C18 3651 G18
2783 N 1 3634 C17 3643 H18 3652 E18
2784 N 1 3635 H16 3644 C18 3655 J21
M 37-DC
3656 B21 6771 L 2
3657 J19 6772 K 1
3658 B18 6773 J 2
3659 I19 6774 J 3
3660 A19 6775 J 4
3661 K18 6776 N 4
3662 A18 6777 L 4
3663 K17 7630 F18
3664 A17 7631 H17
3665 K17 7632 C17
3666 A17 7633 H16
3667 G14 7634 C16
A
3668 A14 7640 J17
3690 H19 7640 A17
3691 D20 7710 G 5
3692 D19 7710 D 5
3693 I18 7710 G 4
3694 G18 7720 E 7
3695 I17 7720 C 7
B
3701 F 2 7730 H 7
3702 E 2 7730 B 7
3703 E 3 7730 K 7
3704 D 3 7740 C12
3705 E 6 7740 H11
C 3706 C 6 7740 E12
3707 F 6 7750 N17
3708 D 6 7760 E14
3709 H 6 7760 H13
3710 E 6 7760 B14
3711 G 8 7780 N 5
D 3712 D 8 7781 N 3
3713 F 9 7782 L 2
3714 C 9 7783 L 3
3715 F 9 7784 J 2
3716 D10 7785 I 2
3717 H 9 7786 I 3
E
3718 B 9 7787 E 9
3719 I 8 7788 N 6
3720 B 8 9712 N20
3721 I 8 9731 D12
3722 B 9 9792 A10
3723 I 6 9793 J10
F
3724 B 6 9797 G 9
3725 J 6
3726 A 6
3727 F10
3728 D10
3729 G10
G
3730 D10
3731 G10
3732 D10
3733 F 4
3734 D 3
3735 E 3
H
3736 C 3
3743 L17
3744 L18
3745 L17
3746 K17
I
3760 E 9
3761 L 5
3762 L 3
3763 F 7
3764 D 7
3765 E 8
J
3766 E 9
3767 N19
3768 K20
3769 M 5
3770 M 2
3771 M 3
K
3772 M 4
3773 L 4
3774 L 4
3775 N 3
3776 N 3
3777 N 2
L
3778 L 2
3779 J 3
3780 J 2
3781 J 2
3782 I 1
3783 I 1
M
3784 H 2
3785 H 2
3786 N 6
3787 J 4
3788 J 4
3789 N 5
3790 M 6
N
4593 F12
4637 E14
4638 B14
4639 G14
4640 D14
4643 B 9
4644 A 6
4799 K 6
5631 G17
5632 E17
5701 M 1
5702 I 3
5703 J 2
6760 N18
6770 L 2
GRUNDIG Service