M 7-C / M 17-C / M 27-C
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
M 7-C / M 17-C / M 27-C
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
GRUNDIG Service
GRUNDIG Service
Schaltplan Cassettenteil / Circuit Diagram Tape Part
Teil 2 / Part 2
2
1
2
1
STOP
Pb deck A
Pb deck B
REC (line in)
Dubbing
HS Chrome
NS Chrome
REC MUTE
HS Ferro
NS Ferro
Pb deckB
REC MUTE
REC MUTE
2
1
1
2
STOP
HS Chrome
REC
Pb Chrome
Pb Ferro
o/p mute
o/p mute
TAPE-L
+
+
R
L
3781
7740 7760
(7750)
CLK
6770
SYMM.
BIAS
LEVEL
BIAS
DECK-A/DCC L PB-LEVEL
DECK-B L PB-LEVEL
DECK-B R PB-LEVEL
DECK-A/DCC R PB-LEVEL
REC-LEVEL-L
REC-LEVEL-R
3789
3778
3764
3762
3694
To: 3693
5632
5631
3660
3659
3656
To:3655
EQUALISATION
PLAY BACK
Rec In R
Pb In R
Rec Out R
Rec Out L
R-Ref.
GND
Vref
Pb In L
Rec In L
VCC
Line Out L
Time Const.L
Pb/_Rec
On/_Off
Time Const.R
Line Out R
BIAS
CONNECTOR
RIGHT CHANNEL
LEFT CHANNEL
Head
Erase
R
L
DECK B
REC/PB
DECK A
PLAY BACK
TEST
SELECTOR IC
ALC
ALC
ALC DELAY
REC/Pb-AMPLIFIER
BIAS
L_OUT
R_OUT
REC.EQUALISATION
MUTE
To 3736
To 3735
To 7710
7730
7740
7760
-CMOS
TAPE-L
TAPE-R
+12V
GND A
REC-L
DATA
STROBE
GND P
DOLBY
CRO2
REC
(7750)
(7750)
(1701)
(1701)
(7750)
(7750)
(7750)
(7750)
To 3690
To 3790
To 3779
6774
3786
Vss
Q3
Q2
Q1
Q0
Qs
Q7
Q6
Q5
Q4
E0
Vcc
CLK
DATA
STR
Qs'
To 7710 7730
REC-R
(1702)
(1702)
(1702)
(7750)
(7750)
(7750)
(7750)
(7750)
(7750)
(1706)
(7750)
8.0V
-9V
-9V
8.0V
1701 K21
1702 M20
1705 A12
1706 M21
1711 E 1
1720 F 1
1730 D 1
2631 H19
2632 B19
2633 F16
2634 C16
2635 G17
2636 D17
2637 G20
2638 D20
2639 J18
2640 B18
2641 I18
2642 A18
2643 J17
2644 A17
2645 J17
2646 A17
2647 J16
2648 B16
2691 G20
2692 G19
2693 G18
2694 I16
2695 G20
2696 D20
2701 E 3
2702 D 3
2703 E 4
2704 D 4
2705 E 4
2706 D 4
2707 E 5
2708 D 5
2709 F 7
2710 D 7
2711 F 8
2712 D 8
2713 F 9
2714 C 9
2715 G 6
2716 E 6
2717 I 9
2718 B 9
2719 I 8
2720 B 8
2721 J 6
2722 A 6
2723 J 5
2724 A 6
2725 K 5
2726 A 5
2727 H 6
2728 B 6
2729 F11
2730 D11
2731 E12
2732 C12
2733 G 8
2734 D 8
2735 H 6
2737 G 9
2738 D 9
2740 J 2
2741 K 4
2752 K 4
2760 L 5
2761 D 7
2762 E 8
2763 E 8
2765 C 8
2767 N18
2780 N 4
2781 N 3
2782 N 3
2783 N 1
2784 N 1
2785 N 2
2786 J 1
2787 K 3
2788 M18
3631 H16
3632 B16
3633 H17
3634 C17
3635 H16
3636 C17
3637 H17
3638 C17
3639 H18
3640 C18
3641 H18
3642 C18
3643 H18
3644 C18
3645 G16
3646 D16
3647 G16
3648 E16
3649 G17
3650 D17
3651 G18
3652 E18
3655 J21
3656 B21
3657 J19
3658 B18
3659 I19
3660 A19
3661 K18
3662 A18
3663 K17
3664 A17
3665 K17
3666 A17
3667 G14
3668 A14
3690 H19
3691 D20
3692 D19
3693 I18
3694 G18
3695 I17
3701 F 2
3702 E 2
3703 E 3
3704 D 3
3705 E 6
3706 C 6
3707 F 6
3708 D 6
3709 H 6
3710 E 6
3711 G 8
3712 D 8
3713 F 9
3714 C 9
3715 F 9
3716 D10
3717 H 9
3718 B 9
3719 I 8
3720 B 8
3721 I 8
3722 B 9
3723 I 6
3724 B 6
3725 J 6
3726 A 6
3727 F10
3728 D10
3729 G10
3730 D10
3731 G10
3732 D10
3733 F 4
3734 D 3
3735 E 3
3736 C 3
3743 L17
3744 L18
3745 L17
3746 K17
3760 E 9
3761 L 5
3762 L 3
3763 F 7
3764 D 7
3765 E 8
3766 E 9
3767 N19
3768 K20
3769 M 5
3770 M 2
3771 M 3
3772 M 4
3773 L 4
3774 L 4
3775 N 3
3776 N 3
3777 N 2
3778 L 2
3779 J 3
3780 J 2
3781 J 2
3782 I 1
3783 I 1
3784 H 2
3785 H 2
3786 N 6
3787 J 4
4
5
6
1
7
8
9
10
11
12
13
14
15
16
17
18
2
19
20
21
3
K
J
I
H
N
G
F
E
D
C
B
A
M
L
K
J
I
H
N
G
F
E
D
C
B
A
M
L
4
5
6
1
7
9
10
11
12
13
14
15
16
17
18
2
19
20
21
3
47k
3667
47k
3668
3768
10k
1k8
3744
1k8
3743
3767
330R
3769 10k
3790
47k
47k
3760
3783
4k7
4k7
3745
4k7
3746
39k
3645
39k
3646
4M7
3781
68R
3693
68R
3695
18k
3735
18k
3736
3k3
3633
3k3
3639
47k
3637
47k
3643
3k3
3634
3k3
3640
3725
220k
82k
3665
180k
3663
470k
3661
33k
3659
1k
3657
8k2
3774
3789 22k
3770
1k5
3775 15R
3776
6k8
3786
2k2
220
3701
220
3703
220
3702
220
3704
220
3705
3706
220
8k2
3719
3771
1k2
1M
3787
2k2
3714
8k2
3720
22R
3710
5k6
3732
2k7
3730
5k6
3728
180k
3712
3k9
3718
1M
3780
4k7
3733
100
3708
1k8
3716
2k2
3713
22R
3709
5k6
3731
2k7
3729
5k6
3727
180k
3711
3k9
3717
100
3707
1k8
3715
3734 4k7
8k2
3772
5k6
3722
3724
12k
5k6
3721
3723
12k
1M
3788
3777
150R
3782
4k7
10k
3761
820
3762
3784
15k
3779
330k
5k6
3650
1k
3652
3k3
3648
5k6
3649
1k
3651
3k3
3647
47k
3631
47k
3632
47k
3638
47k
3644
1k
3658
33k
3660
470k
3662
180k
3664
82k
3666
220k
3726
39k
3765
3766
4M7
180k
3763
470
3764
10k
3690
43k
3692
10k
3691
A
A
A
A
A
A
A
P
P
P
A
A
A
P
P
P
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
P
P
P
P
P
P
A
P
A
P
P
P
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
5702
2u2
5703 2u2
3778 10R
10R
3694
4639
4640
4n7
2741
22n
2740
2734
470p
2738
22n
2737
22n
2733
470p
220n
2633
220n
2634
33n
2731
33n
2732
18n
2643
10p
2645
100p
2639
680n
2637
680n
2638
2781
10n
4n7
2782
2784
22n
2707
470p
2705
100p
2703
100p
470p
2708
100p
2702
100p
2704
2701
100p
18n
2720
18n
2719
180p
2723
100p
2712
2n2
2718
100p
2706
2710
330p
100p
2786
27n
2730
33n
2722
100p
2711
2n2
2717
330p
2709
27n
2729
33n
2721
100n
2735
2728
680p
2727
680p
22n
2752
100n
2783
33n
2787
3n3
2636
3n3
2635
47n
2631
47n
2632
100p
2640
10p
2646
18n
2644
220p
2726
220p
2725
180p
2724
2760
100n
1n
2788
1
2
3
1730
1
1711
2
3
4
3
1
1701
2
3
4
5
6
7
6
5
4
2
1
1706
7
4
1
1720
2
3
5
6
T186
T185
T184
T194
T193
T192
T189
T188
T187
T195
T172
T177
T171
T168
T167
T169
T183
T182
T176
T174
T175
T173
T181
T180
T161
T179
T178
T166
T165
T164
T163
T162
T170
2695
2u2
4u7
2647
4u7
2641
100u
2694
10u
2714
100u
2716
10u
2713
100u
2715
1u
2785
4u7
2642
4u7
2648
2762
2u2
2763
100u
2765
47u
2761
220u
100u
2693
4u7
2691
100u
2692
10u
2767
2780
22u
-C
REC
REC
-C
+C
-C
-C
-C
-C
+C
Vref
Vref
Vref
CR
+C
+C
Vref
Vref
Vref
+C
DOLBY
Vref
2A2
2A2
3A0
3A2
1A0
1A1
1A0
REC-R
REC-L
1A0
1A1
2A0
2A1
2A2
3A0
3A1
3A2
1A0
1A1
1A0
1A1
2A0
2A1
2A2
3A1
2A2
BC848C
7788
7787
BC848C
7633
BC848C
7631
BC848C
BC848C
7780
BC848C
7783
7781
BC848C
7634
BC848C
7632
BC848C
HEF4952BT
7710
5
3
1
6
2
S4a
S0a
S1a
S2a
S3a
HEF4952BT
7730
5
3
1
6
2
S4a
S0a
S1a
S2a
S3a
HEF4952BT
7740
1
2
3
5
6
S4a
S0a
S1a
S2a
S3a
HEF4952BT
7760
1
2
3
5
6
S4a
S0a
S1a
S2a
S3a
HEF4952BT
7710
15
11
12
14
16
S4b
S0b
S1b
S2b
S3b
HEF4952BT
7730
11
12
14
15
16
S4b
S0b
S1b
S2b
S3b
HEF4952BT
7740
11
12
14
15
16
S4b
S0b
S1b
S2b
S3b
HEF4952BT
7760
11
12
14
15
16
S4b
S0b
S1b
S2b
S3b
6770
1N4148
6776
1N4148
6773
1N4148
6771
1N4148
6772
1N4148
6775
1N4148
6774
1N4148
9
10
11
16
1
14
13
15
7720
AN7318S
7
6
4
12
5
3
2
8
7720
AN7318S
CXA1101M
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
7630
2696
2u2
7760
HEF4952BT
10
13
4
7
8
9
SS
DD
EE
V
V
V
0
0
0
0
1
1
2
2
3
3
2
2
4
4
1
1
S
S
1
1
1
1
1
1
0
0
0
0
1
S
S
1
1
S
S
1
1
1
S
S
1
1
1
1
S
S
1
1
1
1
A
A
1
0
0
1
1
0
0
1
A
A
A
A
0
1
0
1
0
1
0
1
7730
HEF4952BT
10
13
4
7
8
9
SS
DD
EE
V
V
V
0
0
0
0
1
1
2
2
3
3
2
2
4
4
1
1
S
S
1
1
1
1
1
1
0
0
0
0
1
S
S
1
1
S
S
1
1
1
S
S
1
1
1
1
S
S
1
1
1
1
A
A
1
0
0
1
1
0
0
1
A
A
A
A
0
1
0
1
0
1
0
1
7740
HEF4952BT
10
13
4
7
8
9
SS
DD
EE
V
V
V
0
0
0
0
1
1
2
2
3
3
2
2
4
4
1
1
S
S
1
1
1
1
1
1
0
0
0
0
1
S
S
1
1
S
S
1
1
1
S
S
1
1
1
1
S
S
1
1
1
1
A
A
1
0
0
1
1
0
0
1
A
A
A
A
0
1
0
1
0
1
0
1
HEF4952BT
7710
8
13
4
10 9
7
SS
DD
EE
V
V
V
0
0
0
0
1
1
2
2
3
3
2
2
4
4
1
1
S
S
1
1
1
1
1
1
0
0
0
0
1
S
S
1
1
S
S
1
1
1
S
S
1
1
1
1
S
S
1
1
1
1
A
A
1
0
0
1
1
0
0
1
A
A
A
A
0
1
0
1
0
1
0
1
6760
BZX79
7750
HEF4094BT
16
15
14
13
12
11
10
98
7
6
5
4
3
2
1
4k7
3656
4k7
3655
4k7
3773
100k
3785
20k
3636
20k
3642
20k
3641
20k
3635
BC558C
7782
BC856B
7784
6777
8V2
5701
1
2
3
4
5
6
MT
NJM4560
7640
8
2
3
1
NJM4560
7640
4
5
6
7
5632
3
4
1
6
5631
3
4
1
6
J111
7785
J111
7786
14.6.96
3788 J 4
3789 N 5
3790 M 6
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
6771 L 2
6772 K 1
6773 J 2
6774 J 3
6775 J 4
6776 N 4
6777 L 4
7630 F18
7631 H17
7632 C17
7633 H16
7634 C16
7640 A17
7640 J17
7710 D 5
7710 G 4
7710 G 5
7720 C 7
7720 E 7
7730 B 7
7730 H 7
7730 K 7
7740 C12
7740 E12
7740 H11
7750 N17
7760 B14
7760 E14
7760 H13
7780 N 5
7781 N 3
7782 L 2
7783 L 3
7784 J 2
7785 I 2
7786 I 3
7787 E 9
7788 N 6
9712 N20
9731 D12
9792 A10
9793 J10
9797 G 9
T161 N 1
T162 G 2
T163 G 2
T164 F 2
T165 F 2
T166 F 2
T167 D 2
T168 D 2
T169 D 2
T170 M 6
T171 E12
T172 B12
T173 K18
T174 H21
T175 L18
T176 H19
T177 E 9
T178 E 3
T179 C 2
T180 L21
T181 K21
T182 G20
T183 E20
T184 M20
T185 M20
T186 M20
T187 N 6
T188 L 3
T189 D 7
T190 A12
T191 B12
T192 G19
T193 I17
T194 N18
T195 M 4
8
13
12
+12V
5.0V
11.8V
11.2V
0.3V
5.0V
+12V
2.3V
-19V
-9V
0V
0V
0V
0V
0V
0V
4.8V
0V
9.8V
9.8V
4.8V
1.2V
-9V
0V
0V
0V
0V
0V
0V
0V
0V
8.0V
7.3V
1.2V
1.8V
+12V
0V
0V
0V
0V
0V
0V
0V
0V
8.0V
-9V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
6.1V
6.1V
6.2V
6.2V
6.1V
6.1V
6.1V
6.1V
6.2V
6.2V
6.2V
0.4V
6.2V
0V
6.1V
6.0V
12V
6.1V
6.2V
0.4V
6.2V
5V
1.2V
6.0V
+12V
6.1V
6.1V
+12V
-9V
10
11
6.1V
+12V
5.1V
5V1
+12V
15
14
16
3 - 21
3 - 22
to 56 AF
page 3 - 35
to 22 Front
page 3 - 14
