Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
RR 620 CD / RR 650 CD
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
RR 620 CD / RR 650 CD
GRUNDIG Service
GRUNDIG Service
3 - 3
3 - 4
Tuner
Seite / page
3 - 13
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3 - 5
VOLTAGES IC U301 TA8164P
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
V (FM)
0.8
0
6.4
6.4
5.0
6.4
6.4
6.4
0
6.4
1.6
5.7
6.4
6.4
6.4
0.3
V (AM) 2.2
0
7.0
7.0
9.0
7.0
7.0
7.0
0
7.0
1.6
7.0
0.7
0.7
7.0
7.0
VOLTAGES IC U302 TA7343
PIN
1
2
3
4
5
6
7
8
9
V (FM)
3.5
5.0
6.5
5.6
0
5.8
5.8
3.5
3.5
V (AM) 3.3
5.0
6.5
4.7
0
5.0
6.4
3.5
3.5
GLEICHSPANNUNGEN GEGEN GND
i
GEMESSEN.
DC-VOLTAGES MEASURED AGAINST GND
i
.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
FM DET
AM OSC
FM OSC
FM / AM
SW
FM
RF
FM MIX
AM MIX
AGC
AM DET
AM
IF
FM
IF
FM
IF IN
AM
IF IN
VCC
AGC
AM
MIX
FM
MIX
GND1
FM
RF IN
AM
RM IN
FM
RF OUT
AM / FM
SW
FM
OSC
AM
OSC
DET
OUT
QUAD
GND2
TA 8164 P
1
2
3
4
5
6
7
8
9
STEREO
LED
LPF
(2)
GND
*
Vcc
L
R
OUTPUT
INPUT
LPF
(1)
VCO
AF
DC
VCO 76kHz
PILOT DET.
PHASE DET.
TRIGGER
STEREO
SWITCH
STEREO
DECODER
STABILIZED
POWER SUPPLY
1/2
1/2
1/2
TA 7343
19 kHz < 90
19 kHz < 0
38 kHz
°
°
108MHz
3 x
Pointer
Seilzug
Dial cord
