Dual C 844 - Service Information and Schematics; Processor Pin Assignment and Schematics

Prozessor TMP 4320 P (IC
409)
•
Pinbelegung
Pin Signal
1
+ 5 V
2 4-
Repeat Switch
0000
Switch
Stop Switch
3
4-
Record Switch
Memory
Switch
Fast
Forward Switch
»
44-
fL
Pause Switch
Set Switch
Rewind
Switch 44
5
4-
fL
Auto
Space
Switch
Play
Switch
6-'
Pulse Dekade 1
7- ,
Pulse
2 Dekade
8 ii-
Pulse Dekade 3
4
9- ,
In Function by
Pulse Dekade
10 -•
Solenoid
Fast Forward
Fast Forward, Music Finder
N, Record, Play
11-'
Solenoid
Rewind
Rewind, Music Finder 44, Record, Play
12 -›
Solenoid Play
Pause, Record SB, Play,
Record
13
Solenoid MF
(Music
Finder)
Music
Finder N und 44
14 Pulse
Segment a 14 15 - '1"
Clear
Muting Playback
Play, Record SB,
Record
15
ii
Pulse
Segment b
3 2 -3.1
Record Recod SB, Record
16 -• Pulse
Segment c
4
co
5 -0.1
Capstan Motor,
Reel Motor
alle Funktionen, all functions
17 Pulse
Segment d 13
12 -3.5
Fast
Forward
Fast Forward, Music Finder N
18
JL
Pulse Segment e
19
iL
Pulse Segment
f 6
7 - 1, -1
UBAT
Solenoids (100 ms)
alle Funktionen, all functions
20
-3. Pulse
Segment g
11 10
Pause
Pause, Record SB
21 GND
22' - JlSLFL
Frequency
1050 Hz from 1 C
404
234-
5
Reset
Power ON
24
}Quartz
25
26
-'11
Clock 10As (IC
408)
27
+ 5
V
28
lf
LED Record]
Dot
Set
LED
Repeat
Record SB,
Record
Set
Repeat
29
LED Play JDek. 2 Dot
Memory]
Dek. 3
LED
Stop
J
Dek. 4
Play, Record SB Memory
Stop
30 0V
31
Music Finder ON -
Suchlauf, Scan
Music Finder N und 44
32
Clear Muting RA (Record
Amp)
Record
33 uu -
Wickelregelung,
Reel Control
Fast
Forward, Rewind, Music Finder N und 44
34
+ 5V
35- SISI.
Remote Control
alle Funktionen, all functions
36 4-
Record
Safety
Switch
Musicassette
374-111111
Tape Run Sensor
38'-
L
Signal Space (Musiklücke)
Music Finder » und 44
39' -
1.
Timer
Record
Timer Switch Record
40' - 1 Timer Play
Timer Switch Play
41 -
L
DLL IR
-System, Cassette
Switch
Kassette entfernt, without a casstte
42
UBAT +
5 V
Transistorentabelle Dolby
• Transistor
leitend / turned on
= HIGH an Basis
Bezeichnung, Signification:
2 Input
Transistor
Switch
Off
S
B
22
C
7 —output
o
104
•
1 Signal HIGH active
Q
107
•
1
Signal LOW active
Q 108
•
Record SB = Record Stand By
Q
109
•
Q 110
•
Q 112
•
Q 113 •
•
0114 • •
Q 115
•
Q
116 •
Q
117
•
Q 118
•
Q
119
•
Q 121
•
12