Panasonic RX-5120LS Service Seite 4

RVDKB167
AN7213
FM RF AMP
TELESCOPE
3.42','
ANTENNAI
EXT
-31
70
S7-2 0 3
ST-4
20
22
I. S7•INS7-IO:Band selector switch in "FM" position.
(I...FM, 2...LW, 5...MW, 6...SVV)
Z S107:
FM mode switch (shown in stereo position).
I...STEREO, 2. ..MONAURAL
3. DC voltage measurements are taken with electronics voltmeter
from negative terminal of battery.
.. FM Position, ( )..AM Position
4. Battery current: No signal
. ........120mA
Maximum output (Radio)
..............I.IA
5. VRI......VCO Oscillator FrequencyAdjust.
6. The mark (V) shows test point. e.g. v = test point 1.
BOTTOM VIEW
S7—8 ST-7 S7-6
S7-t ST-2 S7-3 ST-4
S7-s
RX.5120LS
SCHEMATIC DIAGRAM (RADIO CIRCUIT) MODEL RX.5120LS
RVIUP\i018CE
MAi50
2SC829
FM IF AMP FM
FM AFC FM D. AGC
AM CONV
'CF2
7 27K
0.7
910mA
SO-3
S7-8
IC BLOCK DIAGRAM
ICl
RF AMP MIX
L2
0600 0 ooo
0 0 00
765
L3.7.8.9
Lf01, 201, 3 01, If. '2
RX.5120LS
2-i'Ä90
FM DET AM DET
IF AMP
& IF AMP
K27P
IC2
R25fK
C30K5éP
Rz 10K
caq
IC2
1st
osc
AM CONV AGC
IC3
O
VCO 76kHZ
DETECTOR
STEREO
PHASE
TRIGGER
DETECTOR SWITCH
RECODER
o
RVIBlÄh330
2SC829
FM MPX
-M METER AMP
Rn 00K
R29fK cz
.58)
0mA
50Vf
Rao
23210K
Raj
S 7-5
0022
123
St07
ToAudio Block
14
12
10
2nd
IC2, 3
11
.2
QI, 2
-2
Anode
ICl
OAåo
8
AM METER RECT
oi'åo
FM METER RECT
Cathode
Anode
D2
Cathode
Anode
03, 4
Cathode
Cathode
Anode
05, 6, 7, 8