1-14-3
HE473PIN
IC PIN FUNCTION DESCRIPTIONS
[ VR540/ (39, 58), VR740/ (02, 07, 16, 58), VR742/ (16, 39, 58) ]
Comparison Chart of Models and Marks
IC501( SERVO / SYSTEM CONTROL IC )
“H”
≥
4.5V, “L”
≤
1.0V
Model
Mark
VR540/36 D
VR540/58 E
VR740/02 F
VR740/07 G
VR740/16 H
VR740/58 I
VR742/16 J
VR742/39 K
VR742/58 L
Pin
No.
Mark
IN/
OUT
Signal
Name
Function
Active
Level
1
IN
SC2-IN
Input Signal
from
Pin 8 of
SCART2
L/Hi-z
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
OUT 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
REMOC
ON-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
HiFi-H-
SW
HiFi Audio Head
Switching Pulse
H/L
20
F,G,
H,I,J,
K,L
IN
DAVN-L
VPS/PDC Data
Receive = “L”
L
D,E
-
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/Hi-z
28
OUT
LINE
MUTE
Audio Mute
Control
Signal
L
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
Pin
No.
Mark
IN/
OUT
Signal
Name
Function
Active
Level
