Grundig GML2300, Service Document, Page: 14 / 17

K 15 PFCD 2602 Txt
TV sound AM -demodulator and audio source switch (TDA9830)
Symbol PIN Function Symbol PIN Function
IFIN
1
sound IF differential input signal EXTIN
9
input signal (from external) to audio switch
n.c.
2
not connected SWITCH
10
switch input select control
C
AGC
3
AGC capacitor
V
p2
11
supply v12 V (alternative)
C
REF
4
REF voltage filtering capacitor MUTE
12
mute control
n.c.
5 not connected
GND
13
ground (0 V)
AMOUT 6 AM demodulator output V
p1
14
supply v5 to +8 V
AMIN 7 input signal (from AM) to audio switch n.c. 15
not connected
AFOUT 8 output signal from audio switch
IFIN
16
sound IF differential input signal
Vertical deflection booster (TDA4863AJ)
Symbol PIN Function Symbol PIN Function
VP1 1
positive supply voltage 1
V-OUT 5 vertical output
VP3 2 flyback generator output INN 6 inverted input of differential input stage
VP2 3 supply voltage 2 for vertical output INP 7 non-inverted input of differential input stage
GND 4 ground or negative supply voltage
Tuner
PIN Function PIN Function
1 AGC 7 +5V
2 vacant 8 vacant
3 Gnd 9 Vt 33V
4 SCL 10 Gnd
5 SDA 11 IF Out
6 +5V
IC102 24C08B/PCF0539
PIN Function
1 GND
2 GND
3 Upper resistance
4 GND
5 SDA data wire
6 SCL clock wire
7 GND
8 +5V Power