Pin
No.
IN/
OUT
Signal
Name
Function
Active
Level
48
OUT
C-F/R
Capstan Motor
FWD/REV Control
Signal (FWD="L"/
REV="H")
H/L
49
IN
T-REEL
Take Up Reel
Rotation Signal
PULSE
50
IN
S-REEL
Supply Reel
Rotation Signal
PULSE
51
IN
C-FG
Capstan Motor
Rotation Detection
Pulse
PULSE
52
IN
D-FG
Drum Motor
Rotation Detection
Pulse
PULSE
53
IN
D-PG
Drum Motor Pulse
Generator
PULSE
54
IN
PB-CTL
Playback Control
Signal
PULSE
55
OUT
C-CONT
Capstan Motor
Control Signal
PWM
56
OUT
D-CONT
Drum Motor Control
Signal
PWM
57
–
N.U.
Not Used
–
58
–
N.U.
Not Used
–
59
OUT
LM-FWD/
REV
Loading Motor
FWD/REV Output
H/Z/L
60
OUT
P-ON-L
Power On Signal to
Low
L
61
OUT
D-PB
Playback
Instruction Signal
(Playback="L")
L
62
OUT
D-REC
Delayed Record
Signal
H
63
IN
P-DOWN
-L
Power Voltage
Down Detector
Signal
L
64
–
N.U.
Not Used
–
65
IN
HiFi/NOR
-IN
Audio Mode Input
HiFi="L"/Normal="H"
H/L
66
OUT
BLUE
BACK-
ON
Blueback Control
Signal
H
67
IN
ST/SAP-
IN
Tuner Stereo/Sap
Detector Signal
Input
A/D
68
IN
END-S
Tape End Position
Detect Signal
A/D
69
IN
AFC
Automatic
Frequency Control
Signal
A/D
70
IN
V-ENV
Video Envelope
Comparator Signal
A/D
Pin
No.
IN/
OUT
Signal
Name
Function
Active
Level
71
IN
PG-
DELAY
Video Head
Switching Pulse
Signal Adjusted
Voltage
A/D
72
IN
KEY-1
A/D Key Data Signal
A/D
73
IN
KEY-2
A/D Key Data Signal
A/D
74
IN
LD-SW
Deck Mode Position
Detect Signal
A/D
75
IN
ST-S
Tape Start Position
Detect Signal
A/D
76
–
AVcc
A/D Converter
Power Input/
Standard Voltage
Input
–
77
–
FLDVcc
FLDVcc
–
78
–
N.U.
Not Used
–
79
–
N.U.
Not Used
–
80
–
N.U.
Not Used
–
81
OUT
G1
Display Digit
H/L
82
OUT
G2
Display Digit
H/L
83
OUT
G3
Display Digit
H/L
84
OUT
G4
Display Digit
H/L
85
OUT
a
Display Segment
H/L
86
OUT
b
Display Segment
H/L
87
OUT
c
Display Segment
H/L
88
OUT
d
Display Segment
H/L
89
OUT
f
Display Segment
H/L
90
OUT
g
Display Segment
H/L
91
OUT
h
Display Segment
H/L
92
OUT
i
Display Segment
H/L
93
OUT
j
Display Segment
H/L
94
OUT
e
Display Segment
H/L
95
–
N.U.
Not Used
–
96
–
N.U.
Not Used
–
97
–
N.U.
Not Used
–
98
–
N.U.
Not Used
–
99
–
N.U.
Not Used
–
100 –
N.U.
Not Used
–
Notes:
Abbreviation for Active Level:
PWM ---------------------- Pulse Wide Modulation
A/D ------------------------ Analog - Digital Converter
1-12-2
Summary of Contents for VT-FX685A
Page 23: ...1 9 3 1 9 4 1 9 5 Main 1 4 Schematic Diagram PWR VCR PM REC ...
Page 24: ...1 9 6 1 9 7 1 9 8 Main 2 4 Schematic Diagram ...
Page 26: ...1 9 11 1 9 12 Main 4 4 Schematic Diagram ...
Page 27: ...1 9 13 1 9 14 Function Schematic Diagram ...
Page 28: ...Function CBA Top View Function CBA Bottom View 1 9 15 1 9 16 ...
Page 54: ... 48 49 S 17 Slide Holder S Slide Holder T S 18 50 L 3 Fig DM17 52 51 Slide P 9 Fig DM18 2 4 8 ...