Sony STR-AV280L - Section 1 Block Diagram

STR-AV280L STR-AV280L
SECTION 1
BLOCK
DIAGRAM
|
|
03o1[
TERED]
|
es
FLUORESCENT INDICATOR TUBE
Ae)
I +B
TM902 L101
iY
SPS
AME
MICROCOMPUTER
oa
eS
FM
RF
AMP
FM
IF
AMP
Mt
%
ne
|
Q107,
110
7M
ees
R-CH
ANTENNA]
—
TMiO1
Lio
R
H
losc
BUFFER
AMP
|
sce
i
ea)
OUT
PUT
MW/
LW
BUFFER
AMP
|
Q103
4
1404
|
(3)
AUTO
STOP
LWOSC
|
ms
\
ie
+8
34)
HOLD
DIGIT
b
FM+B
>
+8
Aas
0808
tt,
_
J
(/)
alos
LW OFF SWITCH
9806
AM
eee
:
/MIX/I
7402 1C401 ) SWITCH
MWOSC
PLL
201,202
1C203
x
KEY BOARD
@)
_
OO™S)-@)
+,
MW OFF SWITCI
Q405
Y
a
ie
FM/MW
PLL
AMP
®
9204,
205
IMW/LW
SWITCH
DRIVE
0404
A
a
RELAY
OUTPUT
(4)
RELAY
DRIVE
eer
FUNCTION
il
,
8
$6-2
$6-1
—
PROTECTOR
(4)
Saleh
[8]
sPeaKer
}{a]
0603,
604
L
5 Q
-|
1
LED
DRIVE
ee
0501
L
0301
CONTROL
ome
0502
:
iS
503
TE]
©
eee
0302
MUTING
>
R-
TAPE
a
TAPE
Q502
(O—)
RecHe_O%C
SPEAKER
J505
|
IMPEDANCE
VIDEO
POWER
AMP
=
ce
é
$501-I
(®
iceoi2)
©
a
©
0
RVSOEI
L-CH
1502
©
®
O
(13)
LOUDNESS
)
LK
rye)
|
S
INPUT
ON
4
:
LW
sod
CD
/AUX
OD)
%
t
fs
CURRENT
DET
®
OFF
601
—
J501
£0
AMP
ii
©
INPUT
}
IC5OI(1/2)
L-CH
506
MUTING
eusso8
iaali
©)
RV502
RVGOI-I
RVE02-|
HEADPHONES
Ou
BALANCE
TREBLE
|
-
R-CH
R-CH
R-CH
=
R-CH
L-CH
_J504
(+7,2V)
Cee
NWW£0)
[rare
]
PE
+B
0!
REC OUT
pee
TRANSFORMER
+8
VOL.REG
$30
:
Hes
(+37
V+
AC
IN
R-CH
«SAME
AS
L-CH.
#2
oT
(-7.2v)
8
|
(-18v)
+8
i
(-37v)
<4