Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
CF 21
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
CF 21
3 - 7
GRUNDIG Service
3 - 8
GRUNDIG Service
Logikplatte / Displayplatte / Tastenplatte rechts / Tastenplatte links
Logic Board / Display Board / Button Board right / Button Board left
CONTROL
LOGIC
INPUT/
OUTPUT
BUFFER
COMMAND/ADRESS
REGISTER
SHIFT REGISTER
MEMORY ARRAY
S CL
S DA
X 24 COO
1
2
3
4
8
7
6
5
NC
NC
NC
Vss
Vcc
NC
S CL
S DA
X 24 COO
NC = NO CONNECT
Vss = GROUND
Vcc = SUPPLY VOLTAGE
SDA = SERIAL DATA
SCL = SERIAL CLOCK
IC502 XT24COOP (EPROM)
POWER LED
5V
-24V
5V
5V
5V
5V
5V
-24V
11.1V
12V
11.8V
0V
0V
0.7V
5.7V
16V
21V
0.6V
0V
0.7V
0V
0V
11.2V
5V
0.7V
0V
5V
0V
5V
4.7V
5V
5V
-24V
