1-11-1
HE4F0PIN
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
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 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
REMOCON-
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
-
N.U.
Not Used
-
IN
DAVN-L
VPS/PDC Data
Receive = “L”
L
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-
THROUGH
SCART 2 RGB
Through Control
Signal
H/L
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
33 OUT D-REC-H
Delayed Record
Signal
L
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
-
NUB
Not Used
-
47
-
LP
LP
-
48
IN
FSC-IN
[4.43MHz]
4.43MHz Clock
Input
-
49
-
OSDVss
OSDVss
-
50
IN
OSD-V-IN
OSD Video Signal
Input
L
51
-
N.U.
Not Used
-
52 OUT OSD-V-OUT
OSD Video Signal
Output
L
53
-
OSDVcc
OSDVcc
-
Pin
No.
IN/
OUT
Signal
Name
Function
Active
Level
Summary of Contents for 27A-850
Page 22: ...Main 1 6 Schematic Diagram 1 8 3 1 8 4 HE4F0SCM1...
Page 23: ...Main 2 6 Sensor Schematic Diagram 1 8 5 1 8 6 HE4F0SCM2...
Page 24: ...Main 3 6 Schematic Diagram 1 8 7 1 8 8 HE4F0SCM3...
Page 25: ...Main 4 6 Jack Schematic Diagram 1 8 9 1 8 10 HE4F0SCM4...
Page 27: ...Main 6 6 Schematic Diagram 1 8 13 1 8 14 HE4F0SCM6...
Page 28: ...1 8 15 1 8 16 AFV Schematic Diagram HE4F0SCAFV...
Page 31: ...1 8 21 1 8 22 Jack CBA Top View Jack CBA Bottom View BHE470F01013 C...
Page 55: ...3 1 1 HE450FEX A1X EXPLODED VIEWS Front Panel...
Page 72: ...27A 850 HE4F0ED...
