Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
GV470…
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
GV470…
4 - 10
GRUNDIG Service
4 - 10
GRUNDIG Service
Blockschaltplan (Digital) / Block Circuit Diagram (Digital)
HEAD MOTOR
DRIVER
CAPSTAN MOTOR UNIT
SENSOR PCB
HEAD – DISC MOTOR
CAPSTAN MOTOR
KEYBOARD
CONTROL
UNIT
II
(DC
II
)
SEQUENCE CONTROL / DECK ELECTRONICS (DE)
FAMILY BOARD
6
TDA
8137
3
5
7
1
7190
M
7110
7100
RESET
µPD78134
”MAIN CONTROL µP”
CLOCK
DATA
STROBE
7030
7040
11
66
6
8
7
79
26
28
25
21
29
(AF)
22
(AF)
23
(AF)
20
(FE)
33
32
35
8
(IO)
(FE)
(SE)
30
12
31
10
11
21
(AF)
9
6
(IO)
(IO)
(IO)
(IO)
(IO)
(SH)
(SH)
SYNC
(IO)
ATS
AFC
POSITION
SPEED
AUTOSEC
HI–S
HI–P
WRV
INSERT
NP/LP
V
PICTURE SEARCH
SVHS–DET
FMEP
FMES
AUDIO LEVEL L
AUDIO LEVEL R
22
23
27
24
1
69
14
13
43
37
47
42
15
12
11,16
40
73
49
70
36
76
75
71
SDA–C
B–DATA–A
B–DATA–B
SYNCRO
EDIT
B–CLOCK
3
9
VTR–CAM
CAM–VTR
CAM–CLK
ESTART
8
7
6
1
2
3
4
2
4
74 78 72 46
7064/7066
10
SPEED/
POSTION
PG/FG
7086
ADC
ASTB
A0..A7/D0..D7
A8..A16
D0..D7
A8..A16
A0..A7
A0..A7
38
35
29
7060
31
12MHz
32
9
39
PWM
OUT
18
17
7050
EPROM
LATCH LE
+14/8VUM
DCA
SHIFT
REGISTER
3/1508
1/1508
6/1502
THREADING
MOTOR
REEL÷DISC
RIGHT
8X
REEL÷DISC
LEFT
8X
3
6
13
3
1
2
12
11
1
7
8
9
12
14
LA2722
7070B
FTA
WT2
WT1
LED
EF
5/1502
7070C
7070C
6
8/1502
4/1502
TS
TE
2/1502
10/1502
7/1502
PRO–
TEC–
TED
INIT
SVHS
CONTROL
HEAD
SW1
SW2
SW3
3/1502
1/1502
7/1502
6/1502
REC
S–VHS
CTL
DATA
CLOCK1
DUBBING
REF
REF
SAA 1310
TAPE END DETECTION
TAPE START DETECTION
CTL PROCESSING
1
2
18
CTL OUT
11
3
7070A
7030
7100/12
CLOCK2
SDA–A
SCL–A
STROBE
DATA
CTL GND
17
7070D
6
4
14
3
TO 7002
7020
2
1
10
13
34
SDA–A
SCA–A
36
24
IIC BUS
25
5
3
4
27 26
CAMERS
digital_9403
HG_N9
DATA2
EP
(AL)
(AL)
(AL)
(AL)
(FE)
(AL,SF,IO,FE)
(IO,FE,SF)
(DCII)
(AF)
LP
RESET-B
MUTE MICRO
DATA1
STROBE
CLOCK
CLOCK2
5
3
7
5 PIN EDIT TERMINAL
1520
7
3
2
1
5
3
1
µPD78011
7080
7075
CLOCK
32,768kHz
EEPROM
1520
38
38
37
64
49
(DC
II
) U16/9
”CAMERA µP”
62
1
58
57
35
6
5
6
5
8
8
6
1
5
2,3
7190
1050
T1,25A
FILTER
L9,3
L9,6
L9,5
L9,7
L9,4
HALL
IC
HALL
IC
HALL
IC
HALL
IC
17
1L1
14
7301
TDA
5140
15
+14M2
COMMU–
TATION
LOGIC
1
18
19
20
21
15
8, 13, 14
7100,7101
5L2
12/1502
15/1502
7
15
CAPSTAN
SPEED
7070A
3L2 3CON3
7CON3
1CON3
4L2 2CON3
2L2
14/1502
CM
FG
C–F/R
DIRECTION OF MOTOR
+14/8VDM
13/1502
Vcc
FG2
FG1
CREV
+14/8VDM
MOTOR
DRIVE
W
V
U
CXA–8005AS
2
3
4
5
6
H1 +
H2 +
H2 –
H3 +
H3 –
H1 –
HWM
6/1501
1
3
16
5
HMO1
(PART OF HEAD AMPL.)
HA/HV
HMO2
HMO3
POS
COIL
MAINS
PLUG
TDA 4605
HOT CIRCUT
5070
1/1501
1509
7002
4/7020
7088
7090
1
8
8
5
9
7
6
3
6
6
6L1
5
5
10
1,2
4
4
4
3
17
17,18
17
14
11
18
-30VD
+14/8VUM
+14/8VDM
+14VDM
+15VF
+15VD
RESET
+F2
-F1
EC
+12VD
+12VF
11
13
15
18
16
1
1
2
2
3
4
36
(DE)
7085
7085
REFERENCE
REFERENCE
11
10
(IO)
(IO)
16
3
2
2
14
14
9
15
42
41
5
16
4
17
10
6
9
14
5
4
10
9
7
8
1
5
1526
ARCHIVES
CONTROL
LATCH LE
EPROM
EEPROM
EEPROM
A0…A7
A0…A7
D0…D7
A8…A16
A0…A7
A0…A7
D0…D7
A8…A16
D0…D7
A8…A16
7
8
1
11
7
RESET TO AR
8/1526
RESET TO AR
7/1526
SCL-A TO AR
10/1526
SDA-C TO AR
9/1526
CTL TO AR
1/1526
RESET TO DE
7/7020
RESET TO DE
11/7020
CTL TO DE
18/7070
SDA-C TO DE
71/7060
SCL-A TO DE
75/7060
SCL-B TO VT
57/7140
SCL-C TO VT
56/7140
ARCHIV (AR)
KEYBOARD UNIT
DC
1512
KEYBOARD UNIT
III
(DC)
7085
2,5mm
O
1 + 5Bit
10
7030
7007
7010
7015
7040
12MHz
&
7080
27