Ic Pin Function Descriptions - Durabrand AD214BD Service Manual

IC501( SERVO / SYSTEM CONTROL IC )
Pin IN/ Signal
No. OUT Name
Input Signal from Pin
1 IN SC2-IN
8 of SCART2
Video Head Switching
PG-
2 IN Pulse Signal Adjusted
DELAY
Voltage
P-ON Power
3 IN POW-SAF
Detection Input Signal
Tape End Position
4 IN END-S
Detect Signal
Automatic Frequency
5 IN AFC
Control Signal
Video Envelope
6 IN V-ENV
Comparator Signal
Key Scan Input Signal
7 IN KEY-1
1
Key Scan Input Signal
8 IN KEY-2
2
Deck Mode Position
9 IN LD-SW
Detector Signal
Tape Start Position
10 IN ST-S
Detector Signal
11 - NU Not Used
12 - NU Not Used
D-V- Dummy V-sync
13 OUT
SYNC Output
REMOCON Remote Control
14 IN
-IN Sensor
Color Phase Rotary
15 OUT C-ROTA
Changeover SIgnal
16 - NU Not Used
17 - NU Not Used
Video Head Switching
18 OUT RF-SW
Pulse
19 - NU Not Used
20 - NU Not Used
21 - NU Not Used
22 - NU Not Used
23 - NU Not Used
24 - NU Not Used
25 - NU Not Used
26 - NU Not Used

IC PIN FUNCTION DESCRIPTIONS

"H" ≥ 4.5V, "L" ≤ 1.0V
Active
Function
H/Hi-z
Pin IN/
No. OUT
27 - NU
28 - NU
Level
29 OUT AUDIO-
SW-1
A/D
30 OUT AUDIO-
SW-2
A/D
IN REC-
31
SAF-SW
A/D
32 - NU
A/D
33 OUT D-REC-H
A/D
34 IN RESET
A/D
35 IN Xcin
A/D
36 OUT Xcout
37 - Vcc
A/D
38 IN Xin
A/D
39 OUT Xout
40 - Vss
A/D
41 - NU
-
42 - NU
-
43 IN CLKSEL
44 IN OSCin
L
45 OUT OSCout
H/L
46 - NU
47 - LP
-
IN FSC-IN
-
48
[4.43MHz]
H/L
49 - OSDVss
IN OSD-V-IN OSD Video Signal
-
50
-
51 - NU
-
52 OUT OSD-V-
OUT
-
53 - OSDVcc
-
-
54 - HLF
-
55 - NU
-
1-13-1
Signal
Function
Name
Not Used
Not Used
Audio IN/OUT
Control Signal
Audio IN/OUT
Control Signal
Recording Safety SW
Detect (With Record
tab="L"/With out
Record tab="H")
Not Used
Delayed Record
Signal
System Reset Signal
(Reset="L")
Sub Clock
Sub Clock
Vcc
Main Clock Input
Main Clock Input
Vss(GND)
Not Used
Not Used
Clock Select (GND)
Clock Input for letter
size
Clock Output for letter
size
Not Used
LP
4.43MHz Clock Input
OSDVss
Input
Not Used
OSD Video Signal
Output
OSDVcc
LPF Connected
Terminal (Slicer)
Not Used
Active
Level
-
-
H/L
H/L
H
-
H
L
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
HM212PIN