Ic Pin Function Descriptions - Hitachi VT-FX440E Service Manual

7-2 IC PIN FUNCTION DESCRIPTIONS

Comparison Chart of Models and Marks
Model
VT-FX440E(UK)
VT-MX410E(UK)
VT-FX540E(UK)
IC501( SERVO / SYSTEM CONTROL IC )
Pin IN/ Signal
Mark
No. OUT Name
1 IN SC2-IN
2 IN PG-DELAY
3 IN POW-SAF
4 IN
END-S
5 IN
AFC
6 IN V-ENV
7 IN KEY-1
8 IN KEY-2
9 IN
LD-SW
10 OUT ST-S
11 -
NU
12 -
NU
13 OUT D-V-SYNC
REMOCON-
14 IN
IN
15 OUT C-ROTA
OUT H-A-SW
16
B - NU
Mark
A
B
C
"H" ≥ 4.5V, "L" ≤ 1.0V
Active
Function
Level
Input Signal
from Pin 8 of A/D
SCART2
Video Head
Switching Pulse
A/D
Signal Adjusted
Voltage
P-ON Power
Detection Input A/D
Signal
Tape End
A/D
Position Detect
Signal
Automatic
A/D
Frequency
Control Signal
Video Envelope
Comparator A/D
Signal
Key Scan Input
A/D
Signal 1
Key Scan Input
A/D
Signal 2
Deck Mode
A/D
Position
Detector Signal
Tape Start
A/D
Position
Detector Signal
-
Not Used
-
Not Used
H/
Dummy V-sync
Output Hi-z
Remote Control
L
Sensor
Color Phase
Rotary
H/L
Changeover
SIgnal
Video Head
Amp Switching H/L
Pulse
Not Used -
7-8
Pin IN/ Signal
Mark
No. OUT Name
IN
H-A-COMP
17
B -
NU
18 OUT RF-SW
A OUT Hi-Fi-H-SW
19
B - NU
20 - NU
21 -
NU
22 - NU
23 -
NU
24 -
NU
25 - NU
26 -
NU
27 -
NU
OUT LINE-MUTE Audio Mute
28
B - NU
-
NU
29
OUT AUDIO-SW-
B
1
-
NU
30
OUT AUDIO-SW-
B
2
REC-SAF-
31 IN
SW
IN A-MODE
32
B -
NU
33 OUT D-REC-H
34 IN
RESET
35 IN
Xcin
36 OUT Xcout
37 -
Vcc
38 IN Xin
39 OUT Xout
40 -
Vss
41 - NU
42 - NU
Active
Function
Level
Head Amp
H/L
Comparator
Signal
-
Not Used
Video Head
H/L
Switching Pulse
HiFi Audio Head
H/L
Switching Pulse
Not Used -
Not Used -
-
Not Used
Not Used -
-
Not Used
-
Not Used
Not Used -
-
Not Used
-
Not Used
H
Control Signal
Not Used -
-
Not Used
Audio IN/OUT
H/L
Control Signal
-
Not Used
Audio IN/OUT
H/L
Control Signal
Recording
Safety SW
Detect (With
H
Record tab="L"/
With out Record
tab="H")
Hi-Fi Tape
L
Detection Signal
-
Not Used
Delayed Record
H
Signal
System Reset
L
Signal
(Reset="L")
-
Sub Clock
Sub Clock -
-
Vcc
Main Clock Input -
Main Clock Input -
-
Vss(GND)
Not Used -
Not Used -