1-11-1
HE244PIN
IC PIN FUNCTION DESCRIPTIONS
Comparison Chart of Models and Marks
IC501( SERVO / SYSTEM CONTROL IC )
“H”
≥
4.5V, “L”
≤
1.0V
Model
Mark
27C-250
A
27C-254
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
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
-
N.U.
Not Used
-
17
-
N.U.
Not Used
-
18
OUT RF-SW
Video Head
Switching Pulse
H/L
19
-
N.U.
Not Used
-
20
A
-
N.U.
Not Used
-
B
IN
DAVN-L
VPS/PDC Data
Receive = “L”
L
21
-
N.U.
Not Used
-
22
-
N.U.
Not Used
-
23
OUT
POWE
R-LED
“POWER” LED
Signal Output
H
24
OUT
CAS-
LED
“CASSETTE”
LED Signal Out-
put
H
25
OUT
TIMER-
LED
“TIMER” LED
Signal Output
H
26
OUT
REC-
LED
Recording LED
Control Signal
27
-
N.U.
Not Used
-
28
-
N.U.
Not Used
-
29
OUT
AUDIO-
SW-1
Audio IN/OUT
Control Signal
H/L
30
OUT
AUDIO-
SW-2
Audio IN/OUT
Control Signal
H/L
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
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
CLKSE
L
Clock Select
(GND)
L
44
IN
OSC
IN
Clock Input
for letter size
-
Pin
No.
Mark
IN/
OUT
Signal
Name
Function
Active
Level
Summary of Contents for 27C-250
Page 22: ...Main 2 7 Sensor Schematic Diagram 1 8 5 1 8 6 HE244SCM2...
Page 23: ...Main 3 7 Schematic Diagram 1 8 7 1 8 8 HE244SCM3...
Page 24: ...Main 4 7 Jack Schematic Diagram 1 8 9 1 8 10 HE244SCM4...
Page 26: ...Main 6 7 Schematic Diagram 1 8 13 1 8 14 HE244SCM6...
Page 30: ...1 8 21 1 8 22 Jack CBA Top View Jack CBA Bottom View BHE470F01012 C...
Page 54: ...3 1 1 HE240FEX A1X EXPLODED VIEWS Front Panel...
Page 71: ...27C 250 27C 254 HE244 249FD...
