GV 6400 …, GV 6401 NIC
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
GV 6400 …, GV 6401 NIC
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
GRUNDIG Service
4 - 23
GRUNDIG Service
4 - 24
Chassisplatte / Family Board – OSD/Follow TV (OS/FOME)
Ref
erence
AF
............
4-39
AL
.............
4-28
DE
............
4-21
FOME
.......
4-24
FV
............
4-25
HA
............
4-34
IO
.............
4-27
OS
............
4-24
PA
F
..........
4-35
PBA22
......
4-41
PDCA1
.....
4-41
PDCG1
.....
4-44
PKG11
.....
4-45
PKG12
.....
4-46
PMB
.........
4-17
PSM
.........
4-14
SD
............
4-37
SE
............
4-32
VS
............
4-29
DC, 500mV/Div, 20
µ
s/Div
0V
IC7051-(16), T7821 - Emitter
13
PB
DC, 1V/Div, 20
µ
s/Div
0V
IC7051-(14)
14
PB
DC, 0,5V/Div, 5ms/Div
0V
T7463, Emitter
42
PB
DC, 1V/Div, 5ms/Div
0V
IC7460-(6/7)
43
WIND
DC, 1V/Div, 10ms/Div
0V
OK7466, Collector / R3474
44
THR
AC, 100mV/Div, 10
µ
s/Div
Connectors 1946-(6)
46
PB
DC, 1V/Div, 10
µ
s/Div
0V
IC7400-(25)
47
PB
DC, 500mV/Div, 500
µ
s/Div
Connectors 1946-(4)
48
PB
1V
DC, 1V/Div, 10ms/Div
IC7460-(2)
49
REC
0V
DC, 1V/Div, 10
µ
s/Div
0V
IC7400-(24)
PB
50
DC, 1V/Div, 10
µ
s/Div
0V
IC7400-(10)
51
THR
DC, 1V/Div, 500
µ
s/Div
0V
Connector 1930-(4)
55
PB
DC, 2V/Div, 2ms/Div
0V
Connector 1930-(1…3)
56
PB
AC, 100mV/Div, 10ms/Div
Connetor 1930-(5)
57
PB
DC, 1V/Div, 10ms/Div
0V
IC7300-(6), IC7400-(12)
58
PB
DC, 1V/Div, 10
µ
s/Div
0V
IC7460-(16)
59
PB
AC, 1V/Div, 100ns/Div
T7830 Basis
REC
81
DC, 500mV/Div, 5ms/Div
0V
C2851
REC
82
DC, 500mV/Div, 20
µ
s/Div
0V
C2850
REC
83
DC, 1V/Div, 20
µ
s/Div
0V
T7802 Basis
REC
84
DC, 1V/Div, 20
µ
s/Div
0V
IC7800-(17)
PB
85
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
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
7800
0SCILLATOR
81
14
85
84
82
83
..
OSCILLOGRAMS
from DE
..V
MEASURED IN PLAYBACK MODE
OSD/FOME(40250)
1,9V
2,5V
2,5V
1,9V
4,4V
0,2V
5V
5V
0V
4,4V
1,9V
1,9V
2,5V
2,5V
2,6V
3,7V
0V
4,3V
from DE
/4-A
delete for OSD
from VS
from VS
from VS
to IO,FV
to DE
for Secam only
from DE
/4-D
/4-B
/4-C
5.0V
5.13V
2.3V
0.3V
1.7V
1.6V
5.1V
0V
0V
0V
0V
FOLLOW-TV - OPTION
from DE
from DE
from DE
from FV
from IO
ONLY FOR
ONLY FOR OSD
33u
not used
7852 J 6
7851 I 6
7850 I 4
7850 J 4
7850 J 4
7850 I 8
7830 D 2
7821 D13
7811 C11
7810 D11
7802 F13
7801 G13
7800 D 7
6830 B 4
5831 B 2
5830 B 5
5810 E10
5802 B10
5801 F 6
5800 D 5
3873 D14
3872 E 4
3871 E 4
3870 E 3
3867 J 3
3866 H 3
3865 I 5
3864 H 8
3863 J 8
3862 J 7
3861 H 7
3860 H 7
3858 H 5
3857 I 5
3856 H 5
3855 J 3
3854 J 3
3853 K 3
3852 I 3
3851 H 3
3850 H 3
3838 D 2
3837 F12
3831 C 3
3830 C 5
3814 E15
3813 D10
3812 D10
3811 D11
3810 E10
3809 D 9
3808 G14
3807 E11
3806 F13
3805 F11
3804 F11
2860 H10
2858 J 7
2855 K 3
2854 K 4
2853 I 3
2852 I 4
2851 J 2
2850 H 2
2832 C 3
2831 B 6
2830 C 5
2811 E14
2810 E10
2804 B 9
2803 B 9
2802 F 6
2801 D 6
2800 D 6
45
1
6
7
8
9
10
11
12
13
14
15
23
H
G
F
K
E
D
C
B
A
J
I
H
G
F
K
E
D
C
B
A
J
I
45
1
6
7
8
9
10
11
12
13
14
15
23
5ASW
5ASW
5VA3
5VA3
5VA
5VA
5VA
5VA
5VA
5VA3
5VA3
5VA3
5VA3
5ASW
5ASW
5ASW
5ASW
5ASW
5VA
5VA
5ASW
CSYNC
OCS
OCLK
ODAT
OFP
VIDOUT
VFV
VIN1
FOME
FSC
VSB
100E
3838
2k2
3806
10k
3809
22k
3808
220E
3807
47E
3805
15k
3862
22k
3861
100k
3863
4k7
3864
4M7
3867
4M7
3866
4k7
3865
15k
3850
10k
3851
10k
3852
10k
3853
15k
3854
10k
3855
2k2
3856
4k7
3860
4k7
3857
2k2
3858
3k3
3830
180E
3831
4k7
3812
4k7
3813
10k
3870
10k
3871
10k
3872
1k
3837
100E
3873
0E
3814
1k
3811
100k
3810
100E
3804
5P
5831
1
2
3
4
6
5800
1
2
3
4
6
100n
2802
6V3
120p
2810
6V3
33p
2801
6V3
15p
2800
6V3
100n
2803
6V3
100n
2860
6V3
4n7
2852
6V3
560p
2855
6V3
560p
2853
6V3
4n7
2854
6V3
10n
2831
6V3
56p
2830
6V3
100n
2832
6V3
100n
2811
25V
BAV70
6830
BC848B
7801
BC848B
7811
BC848B
7810
BC848B 7851
BC848B
7852
BC848B
7821
BC858B
7802
BC858B
7830
1u
2804
6V3
10u
2850
6V3
10u
2851
6V3
10u
2858
6V3
6u8
5801
10u
5810
4u7
5802
22u
5830
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
LM339N
2
5
4
7850
LM339N
7
6
1
7850
LM339N
11
10
13
7850
LM339N
9
8
14
7850
13