Grundig K-RCD 110, Service Manual

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Schaltpläne und Platinenabbildungen / Circuit Diagrams and Layout of PCBs K-RCD 110
3 - 10 GRUNDIG Service
IC Blockdiagramme
IC Block Diagrams
2 4 6 8 10 12 14 16 18
1 3 5 7 9 11 13 15 17
Vcc
GND
OSC
AM
MIX
AM
RF
FM/AM
IF Amp.
AM
Det
AGC
AP
Amp.
Quad
Det
MPX
Demod
ST
Ind.
Drive
Vr
Det FF
19kHz
FF
38kHz
VCO
DC
Amp.
Phase
Det
AM
Hi-cut
AN 7024
RF AMP MIX OSC
Bias
Circuit
1 2 3 4 5 6 7 8 8
RF IN
RF By-pass
Capacitor
RF OUT
MIX IN
GND
MIX OUT
OSC T
ANK
Vcc
AN 7205
AMP
AMP
ALC
RIPPLE
FILTER
GND
Vcc
*
AN 7312
12 11 10 13 14 8 9
5 1 2 3 4 6 7
ALC
CONST.
ALC
IN 1
OUT
1 P.C.1 NF1 IN1
R.F. ALC
IN 2
OUT
2
P.C.2 NF
2
IN2
DECOUPLING
THERMAL
PROTECT.
START
CIRCUIT
TEA 2025 B
1
+
-
2
+
-
1
2
9 10 11 12 13 14 15
16
1
2 3 4 5 6
7
8
IC 1 AN 7205 IC 2 AN 7024
IC 3 AN 7312
IC 4 TEA 2025 B
IC 301 LA 9210 M