Download Print this page

Panasonic Technics ST-CH7L Service Manual page 8

Lw/mw/fm stereo tuner
Hide thumbs Also See for Technics ST-CH7L:

Advertisement

>
—:
re
———
TP206
R252 8.2K AM*B LI
1c201
e260
aK
a 208-208
AN7273W
25!
8° aM iLwaaw
KSAII75YGTA
FM/AM IF AMP
(sev KSA II 75YGTA
te Nose
POWER SUERLY.
DETECTOR
e.av| LW/MW
2.28
'4
S
oy | SWITCHING
_
\
tas
r
"
\
ns
vy
Ov
Y o u
SRY teh 8
AI
of
0251
=
t +
le)
46 J
teas
,
sp
48
at
E54
0209 ay)
bd
i
O.7V
C44)
x
Coen
ty
I
Ua7vi
fla 7VI
=
|
LW ANT
L
eel
Q207
ry
xe
KSC2785YGTA
3
x
paren 2 ca
me
:
POWER SUPPLY
CONT.
(ov) OV.
Q252
0.6V
(8.87) 0.6V|
glx
Cov)
(0.7
COV] ga54
R212 470K
Ber
R253
COV)
arn
1B
(02M) =
es
28
£0.7v)
"Stitt
tH
=
-
t
9204
a
38
252 ~254
KSC 2785YGTA
3
7
aes
KSC2785YGTA
SIGNAL
DETECTOR
z
5 8
LW/MW
SWITCHING
FM
offset
voltage (O
mv)
ST-CH7L
ST-CH7L
FM
MPX
VCO
adi
(19OKHzZ
output)
FM
MPX
VCO
adj
5+
0302_1SS254TA
R314 1K
Q205
KSC 2785YGTA
=
SWITCHING
58:
&
0303, 304
3st
-
US
2SC1740SQSTA
R228
1C30l
2
iS
©
MUTING
100K
tov3
RVIBAI332L
%
I~
,
poe
ee]
CLBV} | (ove
FM MPX
0
S
a
.
iSVil
264
gs
i
=
men
ee)
ea
8.
4y
Ss
"i
311
50V1
a ELA
ae
e e e
pes
Ny
'7 ess
"
83
303
5
'
=
at
9205 |.) ay)
20K
£38
01
a
g
eae
joes
2
2
e
C17V}
srvfiev[sav[
~
Lévl.
evi!
ev
s
3
w0.01
FM mono
7
bS
(3)
al
SB
i
'as
/
distortion ad)
§
8B 3
TS
ik on
AF signal
0.3V
sv 15.3V)
leg
|S
5
2.9V
PLL
=
a
|{DETH{AF_ANe
1202
p—iwex F< 4
en
x | 87s
'@
Sp
3
ease
vay SS
8a
OX
[
3
8
C352, 16V10
o>
'
c312 Sov
TE
Ba
@O—O)—(6)—B)
OD
3
cr tans
T
:
*[
:
*
a
ie sot
[yf S4v[54vf0 avy 6v]
ov
Tey ov
"4
°
ox
v
5
=
=
be)
58
8
BLS
b
© 7 R305 6.8K
Al a|
a
a=
g
es
8
R301
ons
FM offset
«je
4
3s
hoK«B)
R|
5
voltage
o
ba}
4
2
Q301, 302
(0
é
©
LJ
KSC 2785YGTA
MM
8
-
BUFFER
AMP
2
f
u
To
SL-CHT7/
SuU-CH7
901
100UH
£OO™
N902
(1/2)
cP902 (1/2)
53V
1SS254TA
CN902
(1/2)
1SS254TA
R914
e901
KSC 2785YGTA
SWITCHING
(RESET)
Ic90l
MNI87I25STTI
MICRO COMPUTER
902,903
OTC 144 ESTP
BUS
LINE
DRIVE
ROIS
R915
C922
25v3.3
R928
4.7K
0903
1S8S254TA
907,908
KSC2785YGTA
POWER
DOWN
DETECTOR
39K
10
0904, 905
KSC2785YGTA
BUS LINE DRIVE
Q701
2S01862QRTVE6
REGULATOR
e}6
Bsk
is
=
gst
3
=
2 J Bee
ns
+
9 =
3
560
=
= he
B48
SS
Bas
=
=
MA4068MTA
!-5K
Aozos
AT
SR 35z00Te ARTE
At
1/2W 150,
a!
al
C708
S
ooora | Log
|
ST
ase
|
Sire
|
@!
Bos
re
R£S
5
!
ota
o
*
ac san}
1
MA
4240MTA
C713
50V22
0712
D714
0716
0718
0711
D713
0715
0717
0711~718
1SS254TA
R710 100
0709
MA4O47MTA
R711
00
ora
50v1
Y q
R705,
2.2
C715
20.01

Advertisement

loading