4 - 32
GRUNDIG Service
Circuits imprimés et schémas électriques / Layout of PCBs and Circuit Diagrams
Circuit principal – Son Mono / Family Board – Standard Sound (AL)
38
35
36
37
34
32
31
..V MEASURED IN PLAYBACK MODE
..V MEASURED IN RECORD MODE
0.7V
0V
0V
8.5V
0V
0V
12.7V
12.7V
0.26V
0V
12.7V
0V
12.7V
3.7V
0V
0V
0V
0V
0V
0V
0V
1.4V
4.5V
9.7V
12.7V
4.8V
5.8
0V
0V
0V
0V
0V
0V
0V
0V
3.8V
3.8V
3.8V
0.5V
0.5V
0V
0V
LPA (pin21)
PAL/SEC
NTSC
REC PB
REC PB
SLP
LP
SP
H
H
H
L
L
L
L
-
-
-
-
-
:
IRAL
MTA
IREV
WITH AUDIO DUBBING
ONLY FOR SETS
0.3V
0.3V
0.2V
0.3V
12.7V
not used
not used
for mstd and pal_bg only
delete for dubbing sets
only for dub
delete for dub
for dub only
delete for dub
from DE
to IO
from DE
from IO
TO TAPE DECK
Pb-LEV.
BIAS
CTL1
CTL2
AEH1
AEH2
APH
ARH
MEH1
MEH2
for LP only
for LP only
to DE
to DE
only for dub
delete for dub
TD1
TD2
7605 B 9
7604 B12
7602 D 9
7601 E 7
5605 G 9
5604 I13
5603 B15
5602 F14
5601 D 6
3908 G14
3907 G15
3906 D15
3650 C 6
3638 B14
3637 H12
3636 I10
3635 H11
3634 G11
3633 G11
3632 G11
3631 I12
3630 G12
3625 A11
3624 A11
3623 B10
3621 A 9
3620 A14
3619 B13
3618 D14
3617 C 7
3616 C 5
3615 D 5
3614 F 3
3613 F 3
3612 E 3
3611 G 3
3610 H 4
3609 G 9
3608 B 9
3607 H 5
3606 H 6
3605 H 7
3604 H 7
3603 H 6
3602 G 7
3601 H 8
3600 H 9
2652 E 3
2650 C 6
2633 D14
2632 I 7
2631 D 3
2629 H11
2628 G10
2627 I14
2626 H14
2625 I12
2624 G13
2623 C16
2622 C16
2621 B14
2620 B14
2619 A12
2618 C13
2617 A10
2616 D 7
2615 D 6
2614 D 6
2613 C 5
2612 D 5
2611 D 3
2610 I 5
2609 H 5
2608 H 4
2607 G 5
2606 G 5
2605 I 7
2604 H 7
2602 H 7
2601 H 7
2600 H 9
1919 H15
1918 G15
7612 H12
7611 I11
7610 I11
7609 B13
7608 G11
7606 B 8
4
5
6
7
8
9
10
11
12
13
14
15
16
3
H
G
F
E
D
C
B
A
I
H
G
F
E
D
C
B
A
I
4
5
6
7
8
9
10
11
12
13
14
15
16
3
IRAL
IPAL
MTA
LPA
AMLP
AMLR
CTL1
CTL2
IREV
+12ASW
+12ASW
+12ASW
+12ASW
+12ASW
+12ASW
+12ASW
+12ASW
+12ASW
1n
2652
10n
2650
2632
10n
2604
100n
2602
1n
2621
1n
2600
330p
2618
1n5
2601
100n
2606
100n
2607
2613
12n
1n
2624
33n
2612
2n2
2610
27n
2622
47n
2620
33n
2625
10n
2627
27n
2626
470p
2608
12n
2623
10k
3606
100k
3618
7611
DTC124EK
0E
3609
470E
3650
10E
3637
10E
3638
10k
3612
0E
3908
0E
3907
0E
3906
330E
3633
390k
3604
100E
3605
12k
3603
1M
3607
47k
3608
2k2
3613
10k
3610
10k
3614
220E
3616
47E
3600
33k
3611
22k
3617
100k
3601
1E5
3619
47k
3620
330E
3602
10k
3621
10k
3623
3k3
3624
33E
3625
330E
3632
4k7
3635
18k
3634
33k
3630
47k
3636
1E5
3631
390E
3615
DTC124EK
7605
DTC124EK
7602
1u
2631
47u
2611
100u
2605
47u
2609
1u
2614
47u
2619
47u
2616
47u
2615
47u
2617
47u
2629
47u
2628
22u
2633
7604
BC328-40
7608
BC858B
330u
5602
10m
5601
5605
1918
1
2
3
4
5
6
7
BC848B
7610
BC848B
7606
BC817-40
7612
BC817-40
7609
5603
1
2
3
4
6
5604
1
2
3
4
6
LA7282
7601
10
11
12
13
14
15
16
17
18
19
1
20
21
22
23
24
2
3
4
5
6
7
8
9
EE/PB
PB
REC
EE
AMP
ALC
EP
LP
MUTE
MUTE
REC
EE
ALC
DET
POWER
MUTE
BUF
REC
EE/PB
CTL
MUTE
CTL
CTL
EP
EP
REC/EE
CTL
LP
EP
RIPPLE
FILTER
CTL
EQ
POWER
MUTE
AMP
1919
1
2
3
Playback
Record
