Sony STR-AV220 Service Manual page 5

AM SECTION
e AM Meter Adjustment
Setting :
AM RF signal
generator
AM loop antenna
mee
Put the lead-wire
antenna close to
the set.
(Ce
Procedure:
1, Tune the set to 1,050kHz,
2. Adjust the RV283 so that the 5 point segment of the
signal meter goen on,
Adjustment Location: tuner board
721, A
ADJ
RV24
LEVEL ADJ
RV21
FM STEREO
SEPARATION
ADJ
RV23
AM METER
ADJ
} DISCRIMINATOR
FM STEREO OPERATION
SECTION 3
DIAGRAMS
FL3OI FLUORESCENT INDICATOR TUBE
16-96 K-A
, $301-308,
Ea $0308
30-27 ,25 —20, I7 (16)
$0 —-———- $10 SII
3-1. BLOCK DIAGRAM
KEY BOARD
SWITCH
FEI
FM FRONT IFOUT(4)
IF AMP
C1) FM IN ANT IN Q1,2
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—— R-CH
1S OMISSION ——
AC IN
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Bt +16V REG Farrel RECT CNJ 901 $90!
(16.3V) AW D801 x AC OUTLET | |
B- ae -30V REG ey
(-30V) Q702
B- (-15V) l
|
|
+6V REG |
Q703
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Q706 ,707
Q704 705
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