Advertisement
Notes:
1. $7-1~87-10: Band selector switch in "FM" position.
(1...FM, 2...LW,3...MW,4...
SW)
FM mode switch (shown in stereo position).
1C1
1...STEREO, 3... MONAURAL
3. DC voltage measurements are taken with electronics voltmeter
from negative terminal of battery.
[_—}..FM Position, (
2. $107:
4. Battery current: No signal
..............cccccceceueseeceeeeees 120mA
Maximum output (Radio) ..............0..008. 1.1A
5. VR1...... VCO Oscillator Frequency Adjust.
6. The mark (¥) shows test point. e.g. V =test point 1.
S700
$7-9
St8
S7-7
8-6
i cae
ME
Rx-5220LS
RX-5220LS
SCHEMATIC DIAGRAM (RADIO CIRCUIT) MODEL RX-5220LS
FM MPX
IC
Dy
D2
.
Qi
ICz
AN7213
RVDKB1G7
= MAISO
=. 28829
RVIUPCIO18CE
FM RF AMP
FM AFC
FM D. AGC
FM IF AMP
an eee ANE ap
ee
=
sear aieel Gaal) Cow) [eae (aan | GO
EO
a a
ea
a
'
SIS
.1y) (Ov)
(vy)
@y
Cv)
Gv)
(ov)
(ov)
"~HS1S
F2
T/
hy 21K JS SPS
20 "Re
| 5 |B ire
2
5
&
410K / 41
sc
re f is
Ca Ke.
-
é
hee
CweCAP
3
7
0200!
(®'
3
CXKDOONKD®
$
tg
a
a!
TV)
OV 7, ow (
Hel
eye
JNe
(0.
O.BV)-V25.179) (5.169)
eS -
g Ft
PIT EDROGGOO
C20
Z0022'5
)...AM Position<
>-...FM stereo position
BOTTOM VIEW
Fo BRLR> 99
2
9
sone
[$85 88885 82883 See SeEES 8 |
St
S72
S30
Spa
S75
8
Tt.3.4 13.789
Ltot, 201, 301, HH 12
T2
310 ol4
310 o|4
'Cn:
IC BLOCK DIAGRAM
O
4° S76
R32 10K
w]e
<1
=a]
= |\@X<
SF
|8
SF
|S
x
>
Ss
as
To Audio Block
©
®
D;
OA90
AM METER
RECT
8
0A90
FM METER
RECT
Cathode
Anode
D2
¢
Jen
D3, 4
Cathode
Di
-
~ Cathode
Anode | Cathode
.
Anode
{05,6
7,
Sosa
FM STEREC
]
5.5V
1.77V
2.0V
2
3
4
2.6V
Advertisement
