Sony ST-A35L - Page 14

ANNE A NNT LT NTE,
ic20l_ HAII225
FM IF CIRCUIT
mal
yal
G20!
RT
202}
|
0,047
E R202 At <
470k |
50 k(B) C2l2
0.02
aun NAL
INDICATOR
LEVEL
ok 1-10 | Sie
OFF | ‘ll +7
HV R41
a) 330
C418
= OO/BV
me CAIE =c4i7| C424
10.047 70022
“¥0.65V) — ee
—W—-#
R404
330
‘AEA
se noted. pF : wuF e na nonflammable resistor.
ras
ca)
Ee
yt for electrolytics
otherwise noted.
o oo @ @
| a208 2S¢945
FM. MUTING LEVEL
1 Q201,202 25C945
NULL INDICATOR DRIVE
0.022
R409
CAL TONE OSC
Readings are taken under no-signal (detuned) conditions
with a VOM (20kQ/V).
no mark: FM
‘ internal component.
: panel designation.
adjustment for repair.
;
witch Switch
| Position |
LW
IC301 HAIZOI6 FM MPx pe
C305
33/6.3V
:
R301
|
01,55!
25C945
—
By
|
He
el
trey!
cam)
fe
a8
ss
Lao
STI
=i
Ik
C307
5.
Ba
x
|
C306
4
2.9V
=i
R313
R353
220/16
Shel
as
A 22V 1/ 16V (0.25 ta R3i2<. IBk oe 18k HI-BLEND
pe
a
POV
tyes
Brace
Frege
3.3k
OFF
{5
f
sy
(TS
=
foe
|
on
a
(OUTPUT
BOARD]
eee
ae
‘oO.
ie
compa-[__|
|
LPF
30!
0.0027
Pp
:
“IOV
FM
eae
ia
OE
C314
RATOR ae ae ION oes Jones -
RT301.
C316
C501
L-GH
0
:
en
Sh)
lOOk{B)
!
47/25y
4.7/25N
PUT
Si-t
S1-2l
|
ae
|
samara
ore
Y
©)
L
(EM)
(CALTONE
|}
DEMODULATOR
5
.4V
ai
C312
Sy
he
6.0056
|
som
ON——
OF
4.7/25V
Comm
;
—=
OFF
ON-OFF
eee
ameg
ys
|
oe
C55
1
[00p
TM902
1
tt
|
|
Sirk
=000
RS
Sree
Ares
|
[OUTPUT]
aaa
[STEREO
/
MONAURAL
‘oveark
F000
hee
Ma
ars
|
SWITCH
5
C382
aa
3
R
iH
lees
a,
gS
4.7/25V
3.3k
|
=
cha
C205
(4
REG
+—
|
lOOp
4.7/25V 7 ere. ) eee ae cue eee Q501 Q85| |-=0V i
HL?V
,ET
UE
P
SHASE
AMP
oo
tee
|
R356
0.85Y,
:
coMPA
|
|
SWITCH
|
[DRIVE
J]
maeeas
e
ot
:
ry
2a
oe
es
9)
pags
R316
R501
bs
>
R305
10k
oii
2
ye
9
ay
LEV
lOk
Ok
|
\Ok
eet
bedes|
:
:
|
|
<0.75V>
cane
”
mic
207
C206
C304
R306
6303
R302
CHASSIS
|
vsovT
Gee
47/2
|
i5k
3.3/6.3V
Ik
|
és
i
is
és
E O
ape
aes
|
Say!
ps0
11/3)
SIni6
Si-19
Sy
|
|
'
G
(STEREO
|
(LEVEL
|
WING
oie
(CAL
THE
CAL
TONE
os
:
See
|
|
ea
|
"ee
LOW
OFF~ON
ON=—
OFF
ON-—
OFF
S33
|
ay
oft
7
ak
ai
[MUTING
C607
|
4.7/25V
} |
| q | WHEN THE BAND SELECTOR| =,
a | Te Gapacsi rer i -| & 0809 IS SWITCHED OVER, SI-23
RO14
|
er
een
TURN
ON
MOMENTARILY,
|
REI
ae
+10k
bos
|
oe
Q802
2SA733
ne
Oe]
RéI3.
YW
p602
ce
|
R601
LOK
L-a7k
MUTING
CONTROL
aT
k
id
R604
;
D807~
809
IN4I48
R6I6
!
|
D601
OV
<2
100k:
|
BANS
eee
|
i
|
Ke
=
42V
/Q802
TURNS
ON
FOR
pepe ce 33K | ONE SECOND AFTER
:
CBIO
py
CBll
hy
Wine
|
THE
POWER
SWITCH
|
3.3/16V | 047 _algy \IS TURNED ON.
50V 5808
L_W——¢—_——_
C809
Ur 29 /25V
peo7 4
a
|
|
13.5V
mt
IB5Vio
ot
IC6Ol
UPC4558C
D602
IN4I48
Q603~605
250945
D60|
[SIBBAM
Q601,602
280945
65,
aia)
| AFC AFC MUTING :
|
:
2.fV
sh
ee
27V
(SIGNAL
STRENGTH
;
|
|
sense
plsoy
ae
a
|
DB0i~805
1N4002
B5Ve
See
geese
capers
y
D806
HZ15
1b
= Q80| 2SD809
| REGULATOR
bs
Ov,
4 3 a q
|
|
=
i
BOARD
oy. |
e) Cale
[CAL
TONE|
>
|
G0
is
Cre
|
é
LEVEL
cal
fe
|
CBOl
C802
|
RT6O!
|
C807
is
|
|O.0lx2
0.01x2
C603
|
50k(B)
22/16V
|
250V..
250V
47
R221
—
=
ik be ¢ La b
( 14 mee(B ‘
|
oy * | R702 91k by BV 7
Q203,204
2SC945
ne
ba
|
i/50V
R70!
R703$
imjC701
C804
Q205,206 2SA733 ; 7 Ok isk = | 41728v 100/25V C803 0.022
NULL INDICATOR DRIVE meee OL RARER st SRR Drnantee nine sacs macy Ce eanrerer ene
‘IC701. LBI416
:
i:
__
SIGNAL
INDICATOR
DRIVE
D901
SEL8B14
PL902 am | PL9O!
DIAL POINTER ) 4 (0) DIAL SCALE LAMP
“He "LT _ItLAMP BOARD]
OF
ay
an
Note:
The
components
identified
by
shading
and
mark
$4
MUTING/STEREO
ON
are
critical
for
safety.
Replace
only
with
<
>
:FMSTEREO.....
with
signal
input
PEVEL
LOW
part
number
specified.
HI-BLEND OFT
ean ae CAL TONE
POWER
VOLTAGE SELECTOR