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GRUNDIG Service
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
TVR 3710 …, TVR 5100 …, TVR 5500 …
Signal-Chassis – Teletext "DOS" (TXT)
0V
0V
0V
2,2V
0V
0V
0V
0V
0V
5V
5V
2,2V
1,9V
4,9V
0V
2,5V
2,1V
4,9V
0V
3,6V
2,1V
4,9V
4,9V
4,9V
1,9V
2,2V
2,2V
1,6V
not used
to TV,TXT-Part
from CO-Part
from IO-Part
to TV-Part
to/from CO-Part
to TV-Part
for SAA5281 only
for SAA5254 only
for SAA5254 only
for SAA5281 only
from TV
for SAA5254 only
not used
9215 H 6
9118 G 1
7884 H 4
7883 F 1
7882 D 2
7881 G 5
7880 H 5
5882 G 1
5881 C 4
5880 A 6
4088 H 5
4086 H 7
4085 H 5
3897 H 3
3896 H 4
3890 C 2
3889 E 1
3888 I 7
3887 H 7
3886 G 4
3885 G 4
3884 G 3
3883 D 1
3882 C 1
3881 D 4
3880 C 3
3799 F 1
2894 F 1
2893 F 1
2891 H 4
2890 E 3
2889 E 2
2888 C 4
2887 C 3
2886 B 2
2885 C 3
2884 C 4
2883 C 4
2882 A 6
2881 A 5
2880 A 5
1800 C 3
4
5
6
1
7
2
3
G
F
E
J
D
C
B
A
I
H
G
F
E
J
D
C
B
A
I
H
4
5
6
1
7
2
3
STTV
BRI
SDA
SCL
BTXT
GTXT
RTXT
BLTXT
VTV
9118
9215
GNDTXT
GNDTXT
GNDTXT
GNDTXT
GNDTXT
GNDTXT
GNDTXT
GNDTXT
GNDTXT
GNDTXT
GNDTXT
2894
2893
100n
2887
10p
2884
100n
2890
100n
2888
1n
2885
100n
2889
100n
2882
100n
2886
100n
2880
15p
2883
100n
2891
3799
0E
3897
3896
100E
3890
0E
4088
3k3
3880
100E
3884
100E
3885
27k
3881
10k
3882
5k6
3883
1k
3886
0E
4086
100E
3887
100E
3888
0E
4085
1k
3889
5882
5880
10u
BC858B
7883
7884
BC848B
7882
5DDA
5DS
5DDA
IC7880: Only for 1 Frontend (Tuner) Version
IC7881: Only for 2 Frontend (Tuner) Version
5DDA
5DDA
5DDA
5DDA
7881
SAA5254
7
19
17
21
8
16
9
22
4
3
2
11
6
18
15
24
25
12
13
1
10
5
14
20
23
31
30
29
28
27
26
40
39
38
37
36
35
34
33
32
VSS1
STTV/LFB
IREF
BLACK
REF+
OSCGND
OSCIN
OSCOUT
B
G
R
BLANK
CVBS
RGBREF
VCR/FFB
POL
VDD1
VSS2
VDD2
VSS3
ic15
ic14
ic13
ic12
ic11
ic10
ic6
ic5
ic4
ic3
ic2
ic1
ic9
ic8
ic7
Y
COR
ODD
SCL
SDA
1
7880
SAA5281
7
19
17
36
37
20
8
16
9
44
21
4
3
2
11
6
18
15
23
24
12
13
5
14
25
22
38
35
34
33
32
31
30
29
28
27
48
26
47
46
45
43
42
41
40
39
CLK-O/P
CLK-EN
LINE23
SDA
SCL
Y
ODD
VSS3
ic19
ic20
ic17
ic16
ic15
ic14
ic13
ic18
COR
16V
47u
2881
4u7
5881
27MHz
1800
Reference
AL ..............P 4-65
BUPI ..........P 4-68
CO .............P 4-43
DE..............P 4-49
IO...............P 4-59
OHA...........P 4-69
PLSP .........P 4-19
PSSP2 .......P 4-37
TU2............P 4-55
Tube PCB ...P 4-33
TV ..............P 4-51
TXT............P 4-58
VS..............P 4-61