1-11-1
HG242PIN
IC PIN FUNCTION DESCRIPTIONS
Comparison Chart of Models and Marks
IC501( SERVO / SYSTEM CONTROL IC )
“H”
≥
4.5V, “L”
≤
1.0V
Model
Mark
29B-250
A
29B-750
B
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
REMOCON
-IN
Remote Control
Sensor
L
15
OUT C-ROTA
Color Phase
Rotary
Changeover
SIgnal
H/L
16
A
-
N.U.
Not Used
-
B
OUT H-A-SW
Video Head
Amp Switching
Pulse
H/L
17
A
-
N.U.
Not Used
-
B
IN
H-A-
COMP
Head Amp
Comparator
Signal
H/L
18
OUT RF-SW
Video Head
Switching Pulse
H/L
19
A
-
N.U.
Not Used
-
B
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
A
OUT
POWER-
LED
“POWER” LED
Signal Output
H
B
-
N.U.
Not Used
-
24
A
OUT CAS-LED
“CASSETTE”
LED Signal
Output
H
B
-
N.U.
Not Used
-
25
A
OUT
TIMER-
LED
“TIMER” LED
Signal Output
H
B
-
N.U.
Not Used
-
26
A
OUT REC-LED
Recording LED
Control Signal
H
B
-
N.U.
Not Used
-
27
-
N.U.
Not Used
-
28
A
-
N.U.
Not Used
-
B
OUT
LINE-
MUTE
Audio Mute
Control Signal
H
29
A
OUT
AUDIO-
SW-1
Audio IN/OUT
Control Signal
H/L
B
-
N.U.
Not Used
-
30
A
OUT
AUDIO-
SW-2
Audio IN/OUT
Control Signal
H/L
B
-
N.U.
Not Used
-
31
IN
REC-
SAF-SW
Recording
Safety SW
Detect (With
Record tab="L"/
With out Record
tab="H")
H
32
A
-
N.U.
Not Used
-
B
IN
A-MODE
Hi-Fi Tape
Detection
Signal
L
33
OUT D-REC-H
Delayed Record
Signal
H
Pin
No.
Mark
IN/
OUT
Signal
Name
Function
Active
Level
