1-14-3
HG490PIN
IC PIN FUNCTION DESCRIPTIONS
[ VR750/ (02, 07, 16, 58), VR752/ (07, 16, 58) ]
Comparison Chart of Models and Marks
IC501( SERVO / SYSTEM CONTROL IC )
“H”
≥
4.5V, “L”
≤
1.0V
Model
Mark
VR750/02
F
VR750/07
G
VR750/16
H
VR750/58
I
VR752/07
J
VR752/16
K
VR752/58
L
Pin
No.
Mark
IN/
OUT
Signal
Name
Function
Active
Level
1
IN
SC2-IN
Input Signal
from Pin 8 of
SCART2
A/D
2
IN
PG-
DELAY
Video Head
Switching
Pulse Signal
Adjusted
Voltage
A/D
3
IN
POW-
SAF
P-ON Power
Detection Input
Signal
A/D
4
IN
END-S
Tape End
Position Detect
Signal
A/D
5
IN
AFC
Automatic
Frequency
Control Signal
A/D
6
IN
V-ENV
Video
Envelope
Comparator
Signal
A/D
7
IN
KEY-1
Key Scan Input
Signal 1
A/D
8
IN
KEY-2
Key Scan Input
Signal 2
A/D
9
IN
LD-SW
Deck Mode
Position
Detector
Signal
A/D
10
IN
ST-S
Tape Start
Position
Detector
Signal
A/D
11
-
N.U.
Not Used
-
12
-
N.U.
Not Used
-
13
OUT
D-V-
SYNC
Dummy V-sync
Output
H/Hi-z
14
IN
REMOCO
N-IN
Remote
Control Sensor
L
15
OUT C-ROTA
Color Phase
Rotary
Changeover
SIgnal
H/L
16
OUT H-A-SW
Video Head
Amp Switching
Pulse
H/L
17
IN
H-A-
COMP
Head Amp
Comparator
Signal
H/L
18
OUT RF-SW
Video Head
Switching
Pulse
H/L
19
OUT
Hi-Fi-H-
SW
Hi-Fi Audio
Head
Switching
Pulse
H/L
20
-
N.U.
Not Used
-
21
-
N.U.
Not Used
-
22
-
N.U.
Not Used
-
23
-
N.U.
Not Used
-
24
-
N.U.
Not Used
-
25
-
N.U.
Not Used
-
26
-
N.U.
Not Used
-
27
OUT
RGB-
THROUG
H
SCART 2 RGB
Through
Control Signal
L/H
28
OUT
LINE-
MUTE
Audio Mute
Control Signal
H
29
-
N.U.
Not Used
-
30
-
N.U.
Not Used
-
31
IN
REC-
SAF-SW
Recording
Safety SW
Detect (With
Record
tab="L"/With
out Record
tab="H")
H
32
IN
A-MODE
Hi-Fi Tape
Detection
Signal
L
33
OUT D-REC-H
Delayed
Record Signal
H
34
IN
RESET
System Reset
Signal
(Reset=”L”)
L
35
IN
XC-IN
Sub Clock
-
36
OUT XC-OUT
Sub Clock
-
Pin
No.
Mark
IN/
OUT
Signal
Name
Function
Active
Level
