Ic Pin Function Descriptions - AEG VCR 4500 Service Manual

Comparison Chart of Models and Marks
Model
VCR 4500
VCR 4505
IC501( SERVO / SYSTEM CONTROL IC )
Pin IN/ Signal
Mark
No. OUT Name
1 IN SC2-IN
IN PG-
2
DELAY
3 IN POW-SAF
4 IN END-S
5 IN AFC
6 IN V-ENV
7 IN KEY-1
8 IN KEY-2
9 IN LD-SW
10 IN ST-S
11 - N.U.
12 - N.U.
OUT D-V-
13
SYNC
IN REMOCO
14
N-IN
15 OUT C-ROTA
A OUT H-A-SW
16
B - N.U.

IC PIN FUNCTION DESCRIPTIONS

Mark
A
B
"H" ≥ 4.5V, "L" ≤ 1.0V
Active
Function
Level
Input Signal
from Pin 8 of
SCART2
Video Head
Switching Pulse
Signal Adjusted
Voltage
P-ON Power
Detection Input
Signal
Tape End
Position Detect
Signal
Automatic
Frequency
Control Signal
Video Envelope
Comparator
Signal
Key Scan Input
Signal 1
Key Scan Input
Signal 2
Deck Mode
Position
Detector Signal
Tape Start
Position
Detector Signal
Not Used
Not Used
Dummy V-sync
H/Hi-z
Output
Remote Control
Sensor
Color Phase
Rotary
Changeover
SIgnal
Video Head
Amp Switching
Pulse
Not Used
Pin
Mark
No. OUT
A
17
B
18 OUT RF-SW
OUT Hi-Fi-H-
A
19
B
A/D
20
21
22
A/D
A
23
OUT POWER-
B
A/D
A
24
A/D
B OUT CAS-LED
A
A/D
25
OUT TIMER-
B
A/D
A
26
B
OUT REC-LED
A/D
27
A/D
OUT LINE-
A
28
A/D
B
A
29
OUT AUDIO-
A/D
B
- A
30
-
OUT AUDIO-
B
L
31
H/L
A
32
H/L
B
OUT D-REC-H Delayed Record
- 33
1-11-1
IN/ Signal
Function
Name
Head Amp
IN H-A-
Comparator
COMP
Signal
-
N.U. Not Used
Video Head
Switching Pulse
Hi-Fi Audio
Head Switching
SW
Pulse
-
N.U. Not Used
-
N.U. Not Used
-
N.U. Not Used
-
N.U. Not Used
-
N.U. Not Used
"POWER" LED
LED
Signal Output
-
N.U. Not Used
"CASSETTE"
LED Signal
Output
-
N.U. Not Used
"TIMER" LED
LED Signal Output
- N.U. Not Used
Recording LED
Control Signal
-
N.U. Not Used
Audio Mute
MUTE Control Signal
-
N.U. Not Used
-
N.U. Not Used
Audio IN/OUT
SW-1 Control Signal
- N.U. Not Used
Audio IN/OUT
Control Signal
SW-2
Recording
Safety SW
IN REC- Detect (With
SAF-SW Record tab="L"/
With out Record
tab="H")
Hi-Fi Tape
IN A-MODE Detection
Signal
- N.U. Not Used
Signal
Active
Level
H/L
-
H/L
H/L
-
-
-
-
-
H
-
H
-
H
-
H
-
H
-
-
H/L
-
H/L
H
L
-
H
HG462PIN