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