Download Print this page

Panasonic SG-250R/25Q Service Manual page 6

Fm/lw/mw/sw stereo receiver

Advertisement

UK only
roy
UK
Oniy
:
a
RIPPLE FILTER
RECT
RE
S| b aroun |
H
FM
RF AMP
FM
OSC
FM
MIXER
AM
CONV
FM,AM
IF AMP
FM
MPX
TUNING
TR901
2SC1383
Dogo) SIRBIO
FM
t
J
T
BLUE
|
TR
2SK49
TRioz2SCi675-L_
TRi03 2SCIG75-L_
TR2o1 28C1359
1C2o1 AN 217
IC301 AN271
TR2oz 2SC828
STABILIZER
De03,90410DCIR
LINE ANT
!
H
FM
AFC
FM
AGC
AM
DAGC
FM DET
AM DET
AM RECT
AOC
Ds0z2 02Z9.5A
Os08.906 IODC!
rOa
H
Dios SC-15
Dioi.102 OASO
Deo1 CASO
D202.203 20490
02040A90
eos OA90_DzoeVDII21
ce
PS, {EMSS
'Tas
7
gi!
=
2
gt
i
_
t
.
:
°
=
Rais
a
J $7°%,|
Ged
ae
3 1
B30
S
©
'
oH
47k
CF202
1S
jiat
Ry
!
cue
ns BTR]
an
g
cap [Fo7I]
D202
«| =
PL
saul
ke
Lets
1
1
©
i]
So}
>
cas
Sa] 8
t
3
a
Raia 100
a]
e
°
rs
os
2
8
|
pean
|
4
\
Sa" | SIrz
Js 8
2
BE 2
2
ne
aa
=
——
\o203
e\s
SF
os
INTE!
4{ Dv0z | 337"
F
=
(3
°
=F
el
¢
au
.
7
=
é
2
Rairtk
TUNING
Ge
7
2
Rais 470k
meTeR|
Bie
Fs
a
ANA
LAMP
5h
é
R29 100k
3
Sa!
[ || |
| [
[ [ pom
he
SIGNAL
baad
G
1
1
19)
METER
°
1
THERMAL
Reoe 100
Lame
PL3
SB
[7d | ill il alge
FUSE
POWER SUPPLY
o
Q|
Bar,
8
3
SIGNAL METER
8
Fa YY
eee
2904 D906 D305 | D904 D903 Z903
3
35
3ISAT
=
83
on
ht
&
Fe
+
a
=
ol
|S
SPEAKER
6
°F
|S
FM TUNING METERI
Coos M0022
sx
33 +
aes
LEFT
Bie
ayy
3
EST E8t
Ht
H
&
Razz 220k
| R223 33k
|
ry
1
2
=
Y-2)—-B-4-S
i
+
¢
Power Amp
C701
is
STK 0256
z=
PLAY/R
cm
O98)
6
of
13
'
Zz
L204
=
LAY/REC
SOv33
sole
es
x
a
Poa ce 1360R
5
S)
=
Roo.
ost
"3
3
3
FUONES:
B
3
;
B=
R70:
sy.
ee
3
3
:
ees
en
yes
jf
&
3
z
g
1%
8
2
C104
x
Z
j25va7
8
6
Ss
we
413
-—Ga40)G9)G!
at
e
s
D)-2)—-E)-4)
+S
8
2
2
v
G
s
«
|x =
aa
an
t
Power Amp
z
mais.
és
es
.
Ic
é
|
8385
5
io708,
=
ets
ae
x
x
TK_025G
élé 2)":
S77
&
ba
coz
LO-G)—6)(7)-G
¢3n
SPEAKER
=
ay
fs
8
50v33
sit
fe
RIGHT
Fig.3 (Norway ONLY)
S$
"
«|
=
tt
4
e
@
He
gS.
oS
"
Ee
Ss
'e
«
Rroz Ik
P2330
5
:
=|
3
_
35
3
58
a
x
i
=
é
el
ysl=C
J]
laf
fa
wes
/
@)
je) az
sl
ihe
[8
s
a
©
es
z
/
C210 M0022
cy
nz
|e
a
én
§
é
=
Neo
=
a
se Saat
tet
Stl aE
ea an, igi ta eal at
A
Ne
acy ec
eS
L
rs
=
R:
nd
+220
2
rd
CT)
Be 7B)
ithe
eS Fase
BRE =
y)
Rsse22k
Rsa22k
Rsas 35 Ra
D
+080
+080
es
cea
i
G
73
3
Je
3}
°
~
rie
0
°
sz
=
=
.
Bn,
+
5
+262
+287
$1
=
2
Ray
TC s17 Sovi
.
38 a OgT Rass Go2r TRso7_ | 258d] »
a|_+6s0
| +663
T0neo
& * op
00
00000
00000
000
re
is
To
eka i
Sea
=
aLce sis] eet
i
:
T2340
i
ae
,
3]
+108
[+107
30 50
&%
20 00000
00000
000
2 op,
[reer z
<
cia] rea
z
/|
AG PAE
ley
.
2
2
Ca_t 33 4_13 314 13a
Fcc
nee
es
oa
"
ee
OTW,
2
vores
w} | 82
7 yj 2108.10
SF 6
Sra
SF 2
©
coos 3608] EBV
2
sel
oc
Be
g
A,3| g283 | =
31] 33
8 | +790
+795
sell
sB9
S87
$85
$83
$81
eo
poo
Fee
2
ie 138 epee | 5
3) | 73!
2 | +089
2198)
R3ai
S023 41
sO%3ai
36\
S347
O34)
sa341
5
TRsoi,
Seer
Can
=
el?
es
«
$18
0.
+1.01
41.45
as
fot
©
:
20
=
000
000000
000000
00
0000
000000
000000
00
F
bicial
U e e s
+
Bis
uf
+079
+079
i,
R303 C301
TRso3'
é
axle
5)
| IRaeo22k Raz
22k
T
v
BR
gE
24022k
Roa:
a{
+098
[+788
9000
000000
000000
00
0000
000000
000000
00
WoL
Atk
svar
ae
ee
f° F caw
TS
'
|
ie BPR CETS
ore
wast
Se
eset
Seesst
3
2341
Soesa)
SHesaT
SE
I!
C389 O01
a!
SF2
Raza. | SOV!
shal el S118
of
38
va]
+088
+146
soi
SSS
eae
ore
ra
aera
{
3
Si\s
28
3]
SO7
|rsse
H
13]
+089
47.94
Be
HH
52
Rsoe68k
2
+b
2
Cate
EXI]]
BINS
pT
SS 8) OST
lear
4]
|
q
ge
NF
el
1 50vI
-
ls
8
ze
3
16
+056
+0.72
(BOTTOM
view)
u
es.
en
al
3,
wy)
[?
¢€
Saerry
fo
af
7
o|
x
TR
gliy
2
7
|'6vo15)
za
QD
(UNDER STEREO SIGNAL CONDITIONS)
PHONO
2
Hl
R53 68k
R517 6.8K
+
506
Bk
7
-
oi
Loz
:
5
!
:
4
wlig-
bry
26)
3
1615
14 1312
11 109
L2or
of
ee
y
&
+
ny
TOT,
ur
zt
em
=
:
x
[rae]
| 8
Cp-
-—CIp
{
eptcosrelinds
vs, HH
r A
lapel
|
|
r
vo
dn8l ig
§
1C 201, 301
[espa
EF G
v
So}
@:
(TOP VIEW)
1 Red
6 Yellow —}p}—
—})]—
$3,
See
Ree
ake
B
2.No Color
7 Green
5
coonsce ¢] ES
BUTS
ak
¢
1
f
3. Green
8
Black
101, 102, 201,204,205
202,203
s
7
.
454
Green
710
9
869
Brawn
2
TRsoa2|
C308
Coie
iy
12345678
:
a Gres
fogs
eee
_ , |
Sep
Sov!
i
( }
(\#)
é
T
s
—Q-
Raoe C302 | C06
3
6va7
0.0.
:
/
I]
poy
"YT Rs00 [[osay]
FILTER
OPOWER
AMPLIFIERO}
1¢701,702
F
F
+}
—pI|-—
8
Lio
L102, 103
Liog
LEFT
Rsio
68k
oe
5
bas
=
O206
Dio3
Hepoh
pptyit
PHONO
82
a
af
* "4
(BOTTOM VIEW)
0903,904
908,906
t
ee
3
7
=
yey
RIGHT
Rsi6 68k
Asie 68k
4
610
o}i
6fo
oO}
o
c
s}o
| of2
°
PHONO
[RADIO|
AUX
ig
8
alo
o;3
4/0
op
wens
moral
Ts01
x
7
=
Door
PHONO GND o——
E
7
4
A
ees
204
101, 201. 203, 205
(BOTTOM
VIEW)
°
FRONT OM MEM
(Norway ONLY)
1:708;204.208:206'
PHONES (BOTTOM VIEW)
4
NOTES
PHONO
AMP
AF
AMP
S
rt:
G:
C3}:
1) Si:
POWER
SWITCH
IN "OFF" POSITION
SFi~ 6 : FUNCTION
SELECTOR
SWITCH IN "RADIO"
POSITION
TRsoi,502.503,504
2SC1I327
TRs05.506,507,508
2SC900
Pp
o
Sz: POWER VOLTAGE
SELECTOR IN "240Vv" POSITION
S6i~i2 : BAND SELECTOR
SWITCH IN "FM MONO" POSITION
TRI.
> TRI9g
103. 201. 2085
(P:COMMON
|. 110V
2. 120V 3. 220V 4.240v)
2) Letters MP. K. J indicate tolerance of capacitors
as follows
501, 502,503,504,
$3:
TAPE MONITOR
SWITCH
IN "SOURCE"
POSITION
M=t20%
P"O%
K: 410%
J= 15%
505,506, 507.508.
Sq : HIGH
FILTER
IN "OFF" POSITION
3)
OC
Voltages
are
to be
measured
with
VTVM
under no signal
901
condition
in "MW, LW, SW," "FM" POSITION
101
102
106
107
108
3
213
212
214
215
223
216
218
221
227
224
226
228
229
230
231
520
519
553
537
529
902
7O1
703
705
1
R
103
105
9
HOT
2
208
238
au
234
235
236
237
239
301
ae
305
217
219
220
3th
306
307
232
308
233
309310
S22
521
531
533°
903
901
702
704
706
2
104
201
203
204
205
209
210
302
303
304
503
560
505
507
509
S515
511
$513
5Ii7
561
563559
554
523
525
527
535
530
536
539
541
543
555
55i
557
545
549
S47
202
207
B12
504
506
SOB
510
SI6
SI2
$14
518
562
564
524
526
528
532
534
538
540
S42
544
556
552
558
546
550
548
206
201
104
108
13
110
109
16
817
218
22)
224
238
228
230
235
232
308
233
236
Sil
S12
904
903
902
3901
711
705
701
703
707
2
7o9
1
Cc
202
102
105
me
Tht
114
FS
118
214
222
223
227?
239
226
237
306
307
235
309
310
905
907
712
706
702
704
708
TIO
203
103
106
207
209
208
2
216
219
241
27
220
50:
503
S05
SOT
537
539
536
Si!
S09
54)
S13
S250
SIS)
SIT
908
SI9
521
$23
525
533
S27
S29
S3
204
205
okd
210
212
205
213
301
302
303
304
305
502
504
506
508
538
540
Siz
510
si4
S16
518
520
522
524
526
534
$28
$30
532
ev
ea ee
re
SG-250R/25Q

Advertisement

loading