CONNECTOR 1740
DECK A & B CONTROL INTERFACE
(For Dolby B NR version only)
1
REC REW
Record tab protection status switch (reverse)
[open=on: close=off]
2
CrO2 B
Chrome tape detection switch deck B
[open=Cr: close=Fe]
3
REC FWD
Record tab protection status switch (forward)
[open=on: close=off]
4
PHOTO B
Photo sensor output (tape movement indication)
5
SOL B
Solenoid supply for deck B
6
Vcc
Deck / Motor supply
7
MODE B
Mode switch (head engagement)
[open=off: close=engaged]
8
GND M
Deck / Motor ground
9
SOL A
Solenoid supply for deck A
10
PHOTO A
Photo sensor output (tape movement indication)
11
MODE A
Mode switch (head engagement)
[open=off: close=engaged]
12
L
L pin for motor
13
CrO2 A
Chrome tape detection switch deck A
[open=Cr: close=Fe]
14
H
H pin for motor
CONNECTOR 1770
DECK A & B CONTROL INTERFACE
(For Non-Dolby version only)
1
REC REW
Record tab protection status switch (reverse)
[open=on: close=off]
2
CrO2 B
Chrome tape detection switch deck B
[open=Cr: close=Fe]
3
REC FWD
Record tab protection status switch (forward)
[open=on: close=off]
4
PHOTO B
Photo sensor output (tape movement indication)
5
SOL B
Solenoid supply for deck B
6
Vcc
Deck / Motor supply
7
MODE B
Mode switch (head engagement)
[open=off: close=engaged]
8
GND M
Deck / Motor ground
9
SOL A
Solenoid supply for deck A
10
PHOTO A
Photo sensor output (tape movement indication)
11
MODE A
Mode switch (head engagement)
[open=off: close=engaged]
12
L
L pin for motor
13
CrO2 A
Chrome tape detection switch deck A
[open=Cr: close=Fe]
14
H
H pin for motor
CONNECTORS ASSIGNMENTS:
CONNECTOR 1701
INTERCONNECTION TO AF BOARD
1
REC-L
Record input left
2
REC-R
Record input right
3
GND A
AF Ground
4
TAPE-L
Playback output left
5
+12V
D.C. supply (+12V) for AF electronics
6
TAPE-R
Playback output right
7
-CMOS
Negative d.c. supply (-9V) for CMOS ICs
CONNECTOR 1703
INTERCONNECTION TO AF BOARD
1
GND M
Motor Ground
2
+MOTOR
D.C. supply (+12V) for tape deck motor & solenoid
CONNECTOR 1706
INTERCONNECTION TO FRONT BOARD
1
AD2
Deck sensing switches output voltage / Deck A EOT
2
AD1
Deck sensing switches output voltage / Deck B EOT
3
+5V
DC 5V for ADC network
4
GND P
Control & Oscillator Ground
5
CLK
HEF4094BT shift register Clock line
6
DATA
HEF4094BT shift register Data line
7
STROBE
HEF4094BT shift register Strobe line
CONNECTOR 1710
DECK B HEADS CONNECTON
(For Non-Dolby version only)
1
B R/P HD L+
R/P Head left channel positive
2
GND A
R/P Head return ground
3
B R/P HD R+
R/P Head right channel positive
4
ERASE HEAD
Erase Head
5
GND A
Erase Head ground
CONNECTOR 1720
DECK B HEADS CONNECTON
(For Dolby B NR version only)
1
B R/P HD L+
R/P Head left channel positive
2
B R/P HD L-
R/P Head left channel negative
3
B R/P HD R+
R/P Head right channel positive
4
B R/P HD R-
R/P Head right channel negative
5
ERASE HEAD
Erase Head
6
GND A
Erase Head ground
CONNECTOR 1730
DECK A HEAD CONNECTIONS
(For Double Deck versions only)
1
A PB HD L+
Pb Head left channel positive
2
GND A
Pb Head return ground shield
3
A PB HD R+
Pb Head right channel positive
9A-4
9A-4
