1-11-1
HC4S4PIN
IC PIN FUNCTION DESCRIPTIONS
IC501( SERVO / SYSTEM CONTROL IC )
“H”
≥
4.5V, “L”
≤
1.0V
Pin
No.
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
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
HiFi-H-
SW
HiFi Audio Head
Switching Pulse
H/L
20
IN
DAVN-L
VPS/PDC Data
Receive = “L”
L
21
-
N.U.
Not Used
-
22
OUT
TUN-
SW2
Tuner System
Control Signal
Output
H/L
23
-
N.U.
Not Used
-
24
-
N.U.
Not Used
-
25
-
N.U.
Not Used
-
26
-
N.U.
Not Used
-
27
-
N.U.
Not Used
-
28
-
N.U.
Not Used
-
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
-
N.U.
Not Used
-
33
-
N.U.
Not Used
-
34
IN
RESET
System Reset
Signal (Reset=”L”)
L
35
IN
XC-IN
Sub Clock
-
36
OUT XC-OUT
Sub Clock
-
37
-
Vcc
Vcc
-
38
IN
X-IN
Main Clock Input
-
39
OUT X-OUT
Main Clock Input
-
40
-
Vss
Vss(GND)
-
41
-
N.U.
Not Used
-
42
-
N.U.
Not Used
-
43
IN
CLKSEL
Clock Select (GND)
L
44
IN
OSC
IN
Clock Input
for letter size
-
45
OUT OSC
OUT
Clock Output for letter
size
-
46
-
N.U.
Not Used
-
47
-
LP
LP
-
48
IN
FSC-IN
[4.43MHz]
4.43MHz Clock Input
-
49
-
OSDVss
OSDVss
-
50
IN
VIDEO-IN Video Signal Input
-
51
-
N.U.
Not Used
-
52
OUT
VIDEO-
OUT
Video Signal Output
-
53
-
OSDVcc
OSDVcc
-
54
-
HLF
LPF Connected
Terminal (Slicer)
-
55
-
N.U.
Not Used
-
56
-
N.U.
Not Used
-
Pin
No.
IN/
OUT
Signal
Name
Function
Active
Level
Summary of Contents for 25A-664
Page 22: ...1 8 3 1 8 4 1 8 5 HC4S4SCM1 Main 1 5 Schematic Diagram ...
Page 23: ...1 8 6 1 8 7 1 8 8 HC4S4SCM2 Main 2 5 Schematic Diagram ...
Page 24: ...1 8 9 1 8 10 1 8 11 HC4S4SCM3 Main 3 5 Schematic Diagram ...
Page 26: ...Main 5 5 Schematic Diagram 1 8 15 1 8 16 HC4S4SCM5 ...
Page 27: ...VPS Schematic Diagram 1 8 17 1 8 18 HC4S4SCV ...
Page 28: ...1 8 19 1 8 20 HC4S4SCF Function Schematic Diagram ...
Page 29: ...AFV Schematic Diagram 1 8 21 1 8 22 HC4S4SCAFV ...
Page 30: ...Jack Schematic Diagram 1 8 23 1 8 24 HC4S4SCJ ...
Page 31: ...1 8 25 1 8 26 Function CBA Top View Function CBA Bottom View BHC400F01018 B ...
Page 33: ...1 8 29 1 8 30 Jack CBA Top View Jack CBA Bottom View BHC400F01018 E ...
Page 54: ...2 4 6 U25PALDA S 12 19 Cap Belt Fig DM11 Fig DM12 20 C 1 21 ...
Page 60: ...3 1 1 HC4C0FEX A1X EXPLODED VIEWS Front Panel ...
Page 81: ...25A 664 HC4S4ED ...
