GV 27 …, GV 47 …, GV 7…
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
GV 27 …, GV 47 …, GV 7…
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
GRUNDIG Service
4 - 23
GRUNDIG Service
4 - 24
Chassisplatte / Chassis Board – OSD (OS), Follow-TV (FM), VPS/PDC (VP)
13
81
84
85
94
82
83
OSCILLOGRAMS
…
…V MEASURED IN RECORD MODE
…V MEASURED IN PLAYBACK MODE
chip components
…
OS(40393)
5VA
5VASW
not used
/4-A
from DE/DC
from DE/DC
from IO
from IO
FOLLOW-TV (FM)
0V
0V
0V
0V
0.3V
2.3V
5.13V
5.0V
/4-C
/4-B
/4-D
to DE/DC
from VS
SDA5642-6 for VPS only; SDA5650 for VPS/PDC
VPS/PDC (VP)
Pos 7540:
5,2V
1,2V
5,1V
0V
1,3V
4,1V
5,3V
5,3V
for Secam & OSD only
from VS
from DE
from DE
from PS
from DE/DC
from/to DE/DC
from DE/DC
to IO
OSD (OS)
from PS
from VS
(OSD-Processor)
(SWITCH)
(VPS/PDC-Decoder)
delete for OSD
not used
not used
not used
not used
5V
5V
5V
2,7V
2,6V
2,7V
5,1V
0V
4,4V
0,7V
18V
5V
1,9V
0V
9801 C 6
7860 B11
7860 D11
7860 C11
7860 C14
7852 C12
7851 B12
7810 I 6
7800 F 3
7540 F14
5810 I 5
5802 D 6
5801 H 1
5800 F 2
3871 B13
3870 B13
3867 C 9
3866 A10
3865 C12
3864 B15
3858 A11
3827 C14
3826 C13
3825 B12
3824 A11
3823 D 9
3822 C 9
3821 D 9
3820 B 9
3819 B 9
3818 A 9
3817 G 1
3816 G 2
3815 G 2
3813 I 6
3808 H 5
3807 G 5
3805 H 5
3558 F10
3557 F10
3556 H 8
3555 G 8
3554 G16
3553 G15
3552 H10
3551 H10
3550 H 9
3549 F10
3548 G 9
2889 B15
2888 C13
2885 D 9
2884 D10
2883 B10
2882 B10
2881 C 9
2880 A 9
2810 I 6
2805 I 2
2804 E 5
2803 D 6
2802 I 2
2801 F 2
2800 F 2
2546 G 8
2545 F 9
2544 H 9
2543 H 8
2542 H 9
2541 H10
2540 H11
4
567
1
8
9
10
11
12
13
14
15
16
23
H
G
F
E
D
C
B
A
J
I
H
G
F
E
D
C
B
A
J
I
4
567
1
8
9
10
11
12
13
14
15
16
23
3858
2k2
3825
4k7
3870
4k7
3824
2k2
3823
10k
3822
15k
3821
10k
3820
10k
3819
10k
3818
15k
3865
4k7
3866
4M7
3867
4M7
3864
4k7
3827
100k
3871
22k
3826
15k
3551
1M
3557
100k
3558
1M
3549
100E
3550
1M
3548
6k8
3556
470k
3555
0E
3552
6k8
3553
100E
3554
100E
3815
10k
3816
10k
3817
10k
3813
4k7
3807
47E
3805
100E
3808
47E
9801
5VASW
5VASW
5VASW
5VASW
5VASW
5VA
5VASW
5VA
5VASW2
5VASW
5VASW
5VASW2
5VASW2
5VASW2
BC847B
7852
BC847B
7851
BFS19
7810
470n
2543
16V
2546
4n7
2884
50V
560p
2883
50V
560p
2885
50V
4n7
2882
50V
100n
2889
25V
100n
2545
25V
50V
33n
2542
100n
2540
25V
2n2
2541
50V
25V
100n
2803
25V
18p
2800
25V
33p
2801
25V
120p
2810
25V
100n
2802
25V
100n
2544
10u
2888
16V
10u
2881
16V
10u
2880
16V
50V
1u
2804
47u
2805
6,3V
VREC
FOME
VBS
VFV
2FSC
OCS
OCLK
ODAT
VSB
OFP
CSYNC2
VOUT
SDA
SCL
LM339
7860
2
5
4
12
3
LM339
7860
9
8
14
LM339
7860
13
10
11
LM339
7860
7
6
1
SDA5642-6
7540
10
11
12
13
14
1
2
3
4
5
67
8
9
SYNC-
DATA-
CLOCK-PLL
SLICER
AQUISITION
DATA-
INTERFACE
I2C-BUS
TIMING
VCS
FBAS
IREF
VCO
INUL
PD1
UDD
TI
DAVN
EHB
SCL
SDA
CSO
USS
5802
33u
5800
5%
10u
5810
10u
5801
LC74781
7800
5
9
42
1
22
15
13
14
6
7
23
10
18
20
19
11
81
7
24
12
16
1
2
3
CSYNout
SEPin
CTRL1
CTRL2
Xout
CTRL3
OSCin
SEPout
Xin
RST
VSS1
VDD1
SYNC
SYNin
CS
VDD3
SCLK
CVin
SIN
NC
VDD2
CVout
OSCout
SEPC
LC74781 / LC74782
VSS1
NC
VDD2
VDD1
VDD1
DISPLAY POS. COUNTER
MUX
MUX
MUX
DISPLAY RAM
CHARACTER GENERATOR
CHARACTER ROM
MIX
SYNCSEPARATOR
SYNC-AND BACKGR. GEN.
CHECK
OUT
SYNC-PROCESSING
PORT 1
PORT 0
CONTROL-REGISTERS
RESET
BUS-INTERFACE
0SCILLATOR
21
22
23
24
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
4
3
7800
0SCILLATOR
Reference
Oscillograms ....4-38
AF....................4-29
AL ....................4-25
DC ...................4-35
DE ...................4-33
FV....................4-21
FM ...................4-24
HA ...................4-30
IO.....................4-27
OS ...................4-24
PS....................4-31
QMB ................4-15
QNIC ...............4-36
VP....................4-24
VS....................4-25
VS-S ................4-28
91
28
27
OSCILLOGRAMS
…
chip components
…
1970
1,9V
TO CINCHIN
…V MEASURED IN PLAYBACK MODE
for mono only
from PS
(QNIC)
delete for TDA9800T MONO 2Scart
for TDA9800T MONO 2Scart only
DK = L
= H
C DK,K’
*
*
5VASW
GNDA
GNDA
AFE
12SW
SSIF
SDA
SCL
ANIL
ANIR
*
*
*
*
0V
5,2V
3,4V
5,2V
5,1V
4,1V
3,4V
2,6V
2,6V
2,6V
2,6V
2,6V
2,6V
2,6V
2,6V
2,6V
to AF
to AF/IO
FM STEREO only
2,6V
2,6V
to DE/DC
to IO
from PS
from PS
from PS
5VASW
to/from DE/DC
from DE/DC
(Stereodecoder)
(Buffer)
(Buffer)
5VD
TO CINCHREAR
FV(40393)
3793 H27
3792 H27
3791 G27
3790 G27
3782 G28
3781 D33
3780 D28
3773 L12
3772 O23
3989 L16
3771 E14
3770 F14
3769 E14
3768 G13
3767 F13
3766 E13
3765 M23
3764 K24
3762 L24
3761 K25
3988 E21
3760 K23
3750 N20
5702 P 4
3749 M20
3748 D21
3747 N20
3744 O17
3742 K17
3739 G26
3737 G24
3736 H25
3986 M23
3735 E17
3732 E17
3731 F24
3730 E24
3729 H26
3726 K 7
3725 J 5
3723 G25
3715 M13
3712 L13
3985 I30
3709 L10
3708 M 9
3707 M 9
3706 J16
3705 P 6
3704 I16
3703 O 9
3702 N 9
2796 J31
2795 K10
3984 I30
2794 P 6
2793 M19
2792 H28
2791 H28
2790 F33
2789 F33
2788 E33
2787 G28
2786 G28
2785 F28
3973 L21
2784 E27
2783 F28
2782 F28
2781 E28
2780 E28
2753 D14
2752 G25
2751 K17
2750 E17
2749 E17
3972 G16
2748 E19
2747 F23
2746 E17
2745 M20
2744 I24
2743 I23
2742 L17
2741 K19
2740 N18
2735 K22
3950 N16
2734 K25
2733 M23
2732 M22
2731 L22
2730 K22
2729 I25
2728 H24
2727 G23
2726 H24
2723 N15
3926 I24
2722 K10
2716 O 8
2715 O 8
2710 P 7
2708 K 6
2707 M11
2706 L11
2705 P 5
2704 K 3
2702 P 6
3925 G23
2701 P 4
2700 K 4
1975 K30
1910 P10
1908 P11
1781 E33
1748 K22
1747 M22
1746 L22
1745 K22
3924 P 5
1740 N19
1722 M14
1721 I14
1720 H14
1719 E15
1701 K 3
3923 J24
5700 K 5
3922 F25
3919 J17
3918 J22
3917 N22
3916 M21
3915 M19
3914 J 2
3913 K19
3912 K19
3911 K18
3990 D21
3910 K18
9005 O 9
7780 H30
7731 N16
7730 F14
7729 G14
7728 M13
7726 C20
7725 G26
7724 M17
7723 K25
7722 P21
7722 O19
7722 O22
7721 F21
7720 G17
6761 F14
6760 E14
5780 F28
5741 M19
5740 M20
5726 K17
5725 E20
5721 L10
5720 M 8
5705 P 7
5703 J 4
32
33
34
25
26
27
28
29
30
31
M
L
K
J
P
I
H
G
F
E
D
C
B
O
N
32
33
34
25
26
27
28
29
30
31
GNDA
GNDA
GNDA
GNDA
GNDA
GNDA
GNDA
GNDA
GNDA
1910
1908
33V
12SW
12SW
5VASW
5VD
VASW
5VA
5VASW
12SW
5VASW
1975
10
9
8
7
6
11
1
2
3
4
5
3922
0E
3984
0E
3985
0E
3781
100E
3782
33k
3780
100E
3790
4k7
3792
4k7
3791
5k6
3793
5k6
3761
1k
3736
5k6
3729
390E
3723
220k
3739
680E
25V
10n
2789
25V
22n
2788
25V
10n
2790
25V
10n
2781
25V
100n
2782
25V
820p
2783
2%
25V
100p
2785
50V
10n
2729
25V
220n
2752
25V
100n
2734
BC857B
7723
BC847B
7725
16V
4u7
2792
16V
4u7
2791
16V
4u7
2786
16V
10u
2780
16V
47u
2784
25V
4u7
2787
16V
4u7
2796
33V
SDA
SCL
VFV
AFC
12SW
5VA
AF2
AF1
5%
10m
5780
GNDA
GNDA
GNDA
GNDA
10MHz
1781
TDA9840T/V2
17
20
19
16
15
14
13
12
11
18
7780
10
1
2
3
4
5
6
7
8
9
Source Selector
Vref
Control
I2C Bus
L+R
2R
Vref
Logic
Level
Adj.
Vref
x2
Integr.
Demod.
Ctrl
Ctrl
2L/A/MONO
Voltage
2R/B
PLL
Osc.
Ref.
VDD
VDD
GND
SDA
SCL
Dual
Stereo
