Pioneer SX-4 User manual

c)ProNEEr{
2
4
6
I
I
8.
9.
10.
ORDER
NO.
ARP-O15-O
COMPUTER
CONTROLLED
STEREORECEIVER
s)(-
MODEL
SX.4COMESINFOURVERSIONSDISTINGUISHEDASFOLLOWS:
r Thisservicemanualis
applicableto theKU
type.
o Forthecircuitdescription,
please
refer
to the modelSX-7
service
manual
{ARP-047-0).
r Cemanueld'instuction serefdre
aumode
der6glage,enfrangais.
o Estemanual
deserviciotratadelm6todo
deajusteescritoenespafrol.
1.
2.
3.
o.
13
17
21
23
za
27
CONTENTS
SPECIFICATIONS
F
RONT
PANE
L FACILITIES
PARTS
LOCATION
4. PACKING
BLOCKDIAGRAI\4
P.C.BOARDS
CONNECTIONDIAGRAM
PIoNEEFIELECTFICINICCG,F|PCTF|AI|CTN r-chome.M6su.o-ku.r
(,.a. FE N--ll aLaCtFCtNlce CC,FIPC'AATIC'N 85 Oxro.ct O.'ve. Moona.h'e, New Je.sey O2O74. u s a
PE illla tl.-CtFCtNlC IEUFC'PE, N.V. Lu'.haAe.-Haven 9.2O3o
FlCrialCF lLaCTElC'NlCa AUaIFIALIA F Y. LYo. 1 7E' I A4 Aolnda.y Rodd, B.aes'de
FHOTULY 1981
Printed
in
japan
SCHEMATIC
DIAGRAM
ELECTRICALPABTS
LIST.
EXPLODED
VIEW
ADJUSTMENTS
nEcuce
AJUSTE
Type Voltag€ Remarks
KU AC12OVonly U.S.A.model
sAC110V,120V,220Vand24OV
(Switchable) Generalexport model
KC AC12OVonly Canadamodel
YP AC240Vonly Australiamodel

1. SPECIFICATIONS
Amplifier
Section
ContinuousAveragePower
0utput
is 20
watts*
per
channel,min.,at 8 ohms
from
20 Hertz
to 20,000Hertzwith
no more
than
0.04%
total
harmonicdistortion.
TotalHarmonic
Distortion
(20
Hertz
to 20,000Hertz,
8
ohms,from
AUX/VIDEO)
continuous
rated
power
output . . No
more
than0.04%
10
watts
per
channel
power
output
. . No more
than0.04%
fntermodulation
Distortion
(50
Hertz:
7,000
Hertz
=
4 : 1,
8ohms,
from
AUX/VIDEO)
continuousrated
power
output. . Nomore
than
0.04%
Damping
Factor
l2O
Hertz
to 20,000Hertz,
8 ohms) 50
In
put
(Sensitivity/l
mpedance)
PHONO ....2.5mYlb0kitohms
AUX/VIDEO
TAPE
PLAY 150mV/50
kitohms
Phono
Overload
Level
(T.H.D.
O.1"/o,
1,000H2)
PHONO 130mV
Output
(
Level/lmpedance)
TAPEREC .15OmVl2.2kitohms
Frequency
Response
PHONO
(R
IAAEqualization)
. . . . 30Hzto 15.000H2t0.5d8
AUX/VIDEO.
TAPE
PLAY
ronr'coniro; " " 10H2to
50'000H21!
uoe
BASS. ...t8dB(100H2)
TREBLE . .18d8 (tOkHz)
'"':::'::::::':lY:
::'
*::':l:':
::
i?::Jil$Tl,
Hum
andNoise
(lHF,
short
circuitedA network)
PHONO 70dB
AUX/VIDEO,TAPEPLAY. ....96d8
FMTuner
Section
Usable
Sensitivity.
Mono;11..2d8f
(lHF)(1.OpV,75
ohms)
50dBOuieting
Sensitivity
Mono;
16.3dBf
(1
.8pV,
75ohms)
Stereo;37.2dBI
(19.9pV,
75ohms)
Signal-to-NoiseRatio Mono;75dB
(at
85dBf
)
Stereo;70d8
(at
85dBf)
Distortion
(at
65dBf)
Mono. ...100H2;0.15%
1kHz;0.15%
6kHz;O.2%
Stereo ....100H2;0.3%
lkHz;0.3%
6kHz;O.4o/o
CaptureRatio. ....1.0d8
AlternateChannel
Selectivity 400kHz;
60dB
StereoSeparation ....1kH2;40d8
30Hzto 'l5kHz;
35dB
Frequency
Response 20Hz
to 15kHz
+0.5d8,
-1dB
SpuriousResponseRatio. ...65d8
lmageResponseRatio ......65d8
lFResponseRatio, ..90d8
AMSuppressionRatio .
55dB
SubcarrierProductRatio. ...40d8
SCA
Rejection
ratio . .60dB
MutingThreshold 29.3dBf
(8pV)
Antenna
Input. . 300ohms
balanced,75
ohmsunbalanced
AM Tuner
Section
Sensitivity
lHF,
ferrite
antenna . . 300pV/m
lHF,
external
antenna 15gV
Selectivity .27d8
Signal-to-Noise
Ratio .50dB
lmageResponseRatio ......40d8
lFResponseRatio. ......73d8
Antenna Built-in
ferrite
loopstick
antenna
Miscellaneous
Power
Requirements AC120V.60Hz
Power
Consumption . . .200W
(UL)
Dimensions . 420(W)
x 98(H) x 311(D)mm
16-9/16(W)
x 3-718(H)x 12-114(Dl in
Weight
(without
package) 5.2kg (1
1lb7 ozl
Furnished Parts
FM
T-typeAntenna 1
DryBatterysuM-3"AA"
. ....2
Operatinglnstructions ,......1
*Measured pursuant to the federal Trade Commission's Trade
Regulation rule on Power Output Claims for Amplif ier.
NOTE:
Specifications and design subiect to possibtemodification without
notice.

SETTINGUSE
THE AM CHANNEL
STEP
SWITCH
(on
therear
panel)
Before the receiverleaves
the manufacturing
plant, this
switch is set to the channel
allotment
olan of the destina-
tion. For the U.S.A., it is set to 1OkHz.Check that the
switch
is
set
properly
beforeuse.
Set it to the 9kHz position when the channelallotment
plan is changed and the intervals between the AM broad-
castingstationschangefrom 1OkHz
to 9kHz units.
NOTE:
Contact your dealer and inquire if you are not sure about the
c
hannelalI
otment pla n.
LOADING
THEBATTERIES
Two size
"AA" dry batteriesareprovided
as
accessories.
They are usedto retainthe stationpresetting
memory
functions.
Beforeusingthe
unit,disconnectthe
power
cordandload
the batteries
into the compartment
on the rear
panel
as
follows:
1.Slidethe
lid inthedirection
of thearrow
andopenthe
compartment
(see
Fig.
1).
Load the batteries with the polarities
properly aligned
with the marks on the inside
of the compartment (see
Fis.2).
Align the tab of the lid with the interlockinghole and
depressthe lid lightly.
BatteryPrecautions:
lf batteries
areincorrectly
used.theymayleakor even
break open inside the battery holder. Observe
the following
precautions
when inserting
and
replacing
the batteries.
1. Always be surethe + and - endsarealigned
properly
as
shownabove
and
as
marked
on the batteryholder.
2. Do not use new batteries and partly used batteriesat
the same time.
3. Do not usedifferent brandsand types of batteries at the
same
time.
niT-trn
".r.J L'orr.
10kHz
position
Fig.2
Insert
tab into
interlocking
hole
Fis.
3Fis.4
There are rechargeabledry cell batteriesand non-
rechargeabledry cellbatteries.
Always
read
the
notes
on
thebatteryto besurewhichkind
youhave.
When
replacingthe batteries,always usethesametype
of batteries
(carbon
zinc)
astheonesoriginally
provided
with the receiver.
Do not use
alkalineand
nickel
cad-
miumtype
batteires.
2.
3.
4.
5.

2. FRONTPANELFACILITIES
o powen
swlrcH
Power
is
suppliedto theunit whenthis
switch
isdepressed
("in" position).
@ FM
STEREo
INDIcAToR
This lightswhen receiving
an FM stereo
program.
@ TU INDICATOR
This
lightswhenreceivingthe FM broadcasts.
(This
lights
whendepressedthe
FMswitch).
@ nrurNDrcAToR
ThislightswhenreceivingtheAM broadcasts.
@ FREOUENcY
scALE
This
scaleiscomposed
of 16light-emitting
diodes
(LEDs).
Duringfrequency
scanning,
the lighting
movesfrom left
to right or viceversa,
depending
on thedirection
corres-
ponding
to the TUNING SWITCHwhichhasbeende-
pressed.
@
rurueorNDrcAToR
This lights when the optimum tuning point hasbeen
located
duringreception.
lt blinkswhenstations
are
being
searched.
@ TUNING
switch
This is used
to tune in broadcastingstations.
Whende-
pressed,
the LEDs
on the frequency
scalelightup in the
leftward
or rightward direction,depending
on thedirec-
tion corresponding
to the part of theTUNING
switch
whichhas
beendepressed.
and
frequency
scanningstarts.
The
TUNEDindicator
now
startsto blink.
Whena stationislocated.
the LEDs
stopmoving
andthe
TUNED
indicator
lights
up.
The soundfrom thestation
canbeheardin about
5 sec-
onds.After thatsoundhas
beenheard
for thesefew sec-
onds,
the frequency
scanning
operation
startsagain.
In
this way, all the broadcasting
stationsarepicked
up in
succession.
NOTE:
The sound of each station is heard for about 5 seconds but de-
press the TUNING switch if this is not the required station or if
you want to search the next station promptly.
@ FM
swrrcH
Depressthis
switch
for FMreception.
@nmswtrcH
Depress
thisswitch
for AM reception.

3. PARTSLOCATION
FrontPanel
View
Display cover
ANR454
Topcover
ANE.362
Front
panel
assembly
-
ANM075
Knob (POWER
)------------5
AAD.406
Knob
(BASS,TREBLE,BALANCE)
AAB.274
Front
ViewwithPanel
Removed
AEL.379
NO?'Sr
o The ! marh found on some componentpatts indicatesthe importance of the
6ofet! factor of the
part. Therefore,whenrcplscing,be
sureto u8e
ports
of identical
designation,
o For your Parts Stoch Contrcl, the faet mouing items ore indicdted uith the
marhs ** qnd *
** GENERALLY MOVES FASTER THAN ,
Thiaclossificationehollbeodiustedb! eachdietibutor becauseit depend,on model
number,temp
eroture,humidity, etc.
Knob
{TUNING)
AAD.4OO
Knob
(FMl
AAD4O2
Knob
(AMl
AAD403
Knob
(VOLUME)
AAB.273
Knob
(INPUT)
AAD.399
A r * Push
switch(POWER
ASG-521
Knob
(TAPE/ADPT.
MONO,
LOUDNESSI
AAD-405
Knob
(MEMORY/STOP)
AAD4O4
Variable
resistor
(VOLUMEI
ACT-128
I * 3{angedpush
switch
(TAPE/ADPT.
MONO,
LOUDNESS}
ASG'301
*t Tactswitch
ASG-177
Controlassembly
GWX-721
Phones
jack {PHONES}
AKN-029
Variableresistor
(
ACT-140
Variable
resistor
(TREBLE)
ACT-140
Variable resistor
ACT-o23

4. PACKING
No. Part No. De.cription
1. AHA-294
2. ARB439
3. ADHOo4
4. AHD-961
Side
pad
Operatinginstructions
T-typeFM€ntenna
Packing
case s*613
RearPanel
View
* t Slideswitch
(AM
CHANNEL
STEPI
ASH-O15
rerminal
(AM
STEREOOUTI
AKB{76
Terminel
(PHONO,
AUX/VtDEO,R
ECI
AKB-079
Terminal
(PLAYI
AKB{77
TopView
,\ ACsocker
(AC
OUTLETSI
AKP-039
Strainreliet
AEC-358
ACpower cord
ADG.O52
Terminal
{SPEAKERS)
AKE.lOI
ti\ ** Fuse
(5A)
AEK-1OA
Power
transform€r
ATT€39
.'! *r Fuse
(3Al
AEKI
Ol

5. BLOCKDIAGRAM
FM FRONT END FM IF AMP A DETECTOR FM MPX STEREODEMODULATOR
MPx STEREo L.P,F/ AF A}AP
DECODER
IC L-ouT
300n
FMF
GNO !
IF AUP
A OETECTORIC
'I
oerecroa
SIGNAL
IIETER
Io"
TUNING OETECTOR
3 E. X'TAL
IC P06004
R7 Voo
R8
R9
Rto RESET
Rtl
KO
KI
X2
K3
.' IRQ
PO
Oo
or vurE
l,-o.0.
I osc 351
bl
PLL SYNTHESIZERCIRCUIT
r IC M54922P t^
Illt oarr Ia
I
--" rN
l"
^M/FM I'
PO G) LD
+35.6d8 ATlkHr
8CD
TO
OECIMAL
OECOROER
FM,/Ail sELEcroR
va vs vo Yt Y2 Y3 vi
rUNER
SECTION
EQ AMP
FUNCTION
S€LECTOR
I
POWER
SW I
-1#orr I
f Fr tql'
lj jf
FREQUENCYDISPLAY
POWER
AMPLIFIER
IONE
CONTROL
POWER SUPPLY CIRCUIT
AUX
,/
Vt0€O
MUTING
CONTROL
--
-
FUNCTION
SELECTOR
r*}@*
g€ oFF fcl
sw q MoD€ sw
^ SPEAKERS
r
f- -o
v MoNo oN
R,
CH -r I pxorts
-+& _=r"f
ll -j-vn
#
I ', --{1
v-
LOU0f{ES
S
sw oFF
j
R.CH
AC12OV
60Hr
a

E6.P 1
.C.BOARDS I
l2
CONNECTION I
DIAGRAM 3
A
B
CONTROL Ass'y(GwX-72 | )
Q2
VOLUME AssV
C
CONTROL Ass'y A
D

6
5
4
COMPLEX Ass'y
CONTROL Ass'y
(awx-7,7)
TC202
Qro5 o2o4 Q2r3
Q2O5

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HEADPHONES JACK Ass'y
B
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I
7. SCHEMATICDI
NOTE:
The indicated semiconductors are representatiue ones
only. Other alternatiue semiconductors may be used
and
arelisted in the parts list.
- 3OOn
L 750
I
l2
AGRAM 3
2SC1919
2SC710
2sAz26s Lot
No
h.E
A
-
-
C
-
| 22o
I a,l
B
D
f"*
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t-rdl
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aux/vt0E0
tpiNl
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4
2SC1845
258560
2SA992
2SC1384 254684A
Type No
Type No Type No Type No
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"--\:\
sw TcHEs i
S TUNlN6
(UP)
s2 luNrNc (oowN)
Sf, MEMORY/STOP
54 STATIONCALL 1
55 STATIONCALL 2
56 STAIION CALL 3
57 SIAT1ON CALL4
Sg STAiION CALL 5
59 STATION
CALL 6
SIO INPUT
(PHONO)
sr rxPW (aux /vtoEo)
S3 AM
sol I
slo
-3
sro2
stoS
TAPE/ AOAPT ON qI
MONO/MUTE
6F SIEREO/ON
- MONO/OFF
LOUoN€SS ON 9!q
N CHANNELSTEP 9kAt - M
POWER ON _ OFF
The lndar nad nd carss rhe sw rch pos r on
1 AES STORS
Indicatd in lt, yiw, l/8 W !5% lorera.ce un €$ otheBie nord k k'
M MQ,IF) i1%,(Gl .2% (K) '1&,(M) r20%rcrer..c.
Indicaid n capac(y 1!F)/volia* lvl !. e$ orhemte nord p pF
Indlcatio. w(ho!! vohaqe s SV
3 VOLTAGE, CURR€NT
X Sqna vooge* ?a w+ 20 W 8!rourpulirkHz)
E ocvolraqelvrdno nputse.a
Va ue ,n 1 ) s DC vo tase ar ,a1d power
fie I_ n"ft rolnd on sode compo.enr
I rhe pad Theretora when reD ac nq,
be sureto uee
oans oi dent ca desq.anon
Th s tr rhe basc ihemal,c d,aqrah, bui rhe aclua
duero mprovemenc ndesgn
!-;"*". ^*r;
-O\
r@\
A
;-tA coNTRoL Ass'yB J-
cwx-7al t1/t) L-
T
I
=-1
q3 rc4069!AP
05c
CONNECTOR Ass'y A3s'y
l1/2)
05fr
A€L- 35I
I
8
7
I 36 coNTROLAss'yB GWX-7!7
(2/3)
' F;.
R;
=l i".i"";, llli_iiq
i i 03
wz-157
I L.__{----
o.,5 rsr555 06 sz-o27 |
- -----
I
1I
05ro aEL-365

I12
2SA798
10
2SK168
11
-Lot No
2sD313 "N
2sD880 r,c.
r.-f\)
i,..ffifu"rn.
ry!
;:3:::t,,"."+\
""';ffi,-"'.'
2sc2s62
"'"."
- ftt,
lyl -nFE
ill
.[|l"
::3ff3'
'"'*'-ffi
h'e
hv-
rvpeNo
([\
A
B
C
L81473
M*922P
LA1247
P44008
HAl 156W-P
TC4O69UBP
PA3001-A
M74LS42P
ffi
CoNTROL Assry B
GWX-717 {3/3}
"Ar^nlj44
fteeeeeMry
r______{
.in44
&ee$#
-
D
110
NJM4558DXC
12 ,'"1-

8. ELECTRICALPARTS LIST
NO?,0S.
. When
ordering resislors,
first conuertresistanceualues
into codeform ossholt)nin
the following exomples.
Ex. 1 When there ore 2 ettecliue digits (any digit apart from O),
such as560 ohm
and 17h ohm (tolerance is shoun by J 5%,ond. K=10% ).
560s1 56 t 10t 561... .. RD%PS
6@E J
17htt 17 ,. 103 473 . . . . . RD'/,PS AAB J
0.50 0R5.... ..... RN2H
@86 K
lsl 010 .... ..... nSlP @m@ K
Ex. 2 When there are 3 effecliue digits (such (Lsin high precision metol film
reslslo'3).
5.62hsl 562 x 10' 562r.... RN%.SR
EdBm r
Symbol & Description ccDsL221J50
ccDsl100Ds0
ccDSL101K
500
ccDsl 220Ks00
CKDYB472K
50
ccDSL271J50
CKDYX273M25
CKDYB
561K50
CKDYB
182K
50
CKDYB222K50
CKDYB392K50
9KDYF223250
CKDYB
1O2K50
ccDSL470J
50
CKDY
F1O3Z50
CKDY
F
473250
coMA
473K
50
CKDYB
152K50
CKDYB562K50
CGB
R47K
5OO
cosA 511J50
cosA431J 50
coMA 183K50
COMA
1O4K
50
coMA 273K50
COMA
333K
50
CEANL2R2M50
CEANL
R47M
50
cEANL 01orvl50
. The I marh found on sotne componenl parls indicates the importance of lhe
sofet! factor of the part. Therefore, when replacing, be sure to use parts of
ideaticol designation.
. For your Port6 Stocl? Control, the fost mouing items are indicoted wilh the
marhs t* and t
** GENERALLY }IOVES FASTER THAN *
This classification shall be adjusted by each distibutor because it depends on
model number, temperature,humidity, etc.
MiscellaneousParts
Mark Part No, c125,C331
,C332
c342.C343
c354,C355,C364,C365
c352,C353
c346,C341
c323,C324
cr39,c140
c141.C142
c145,Ct46
c1
43,C1
44,C21t,C334.C33
5
c317,C318
c215
.C21
A
,C221,C222
c1t't,c2t4,c219.c221
c319,C320,C336-C339
c103,c109,cr10, c119,cr20,
c201, c202, c207, c211. C224,
c226. C224,C231,
C234,C325,
c326,C?53
Mark Symbol & Description
I t ATT-839
I ACG-017
irr Ascs2t
i r* AEK
101
i ir AEK-108
AEL
379
i AKP-039
I ADG-052
AKE-101
AKA-076
GWX-721
GWX-717
AWM.351
Mark PaIt No.
T101 Power
transformer
C101 Ceramiccapacitor
5101 Push switch
{POWER)
F
U101 Fuse
(3A)
FU102,FU103 Fuse
(5A)
D101 LEDarray
AC socket(AC OUTLETS)
Terminal
(SPEAKERS)
Terminal
(AM STEREOOUT)
Control assembly
Control assemblyB
Complexassembly
'The complex assembly
(AWM.351) iscomposedof Complex assem
bly, Volume assemblv, Headphones jack assembLyand switch
Complex
Assembly
CAPACITORS
Symbol & D€scription
c121
, C123,C124,C126,
c131, C't33, C205,C208,
c216, C220,C366,
C367
c406,c407
c311,C312
c309,c310
c107
c136
c204
c344.C345
c348,C349
c350,c351
c356,C357
c303,c304
cr50
c137,C138,C315,C316
c128
c210,
ccDUJ040c50
ccDcH 220J 50
ccDTH100D50
ccDSL060D50
ccDTH 120J50
ccDcH 020c50
ccDcH 080D50
ccDcH 150J50
ccDcH 330J50
ccDsL
101J
50
c101
.c
t
02
c229,C230
c104,c105
c106
cl 't 4,c1
't
5
c113
c112,C118
c117
c108,c310,c302
17

Mark PartNo. Symbol & Description TRANSFOR
MERS,COILS
AND F ILTERS
CEANL 2R2M50
CEANL lOOM50
CEANL 47OM
]6
CEANL4R7M 50
cEA 471N4 25L
CEAR33M
50L
CEA
R6AM
50L
CEA R47I!1
50L
CEAOl
OMsOL
C
EA
2R2M
50L
CEA4R7M
50L
CEA lOOM
50L
CEA3R3M
50L
CEA 22OM25L
CEA47OM25L
CEA47OM50L
CEA101M
lOL
CEA221M
35L
CEA221M
16L
cEA331rvts0L
cEA
470[/
16L
cEA221M
100L
cEA470[il 100
L
ACH.21/
ACG
019
ACM-O14
ACt\,1-006
ACM
015
c321
,C322
.C32A,C329
c340,c341
c307,c308
ct35
c418
c408
c233
c14t,c14A,C209
c t22,c232
ct21
c206
c1
49
.C223,C401
c212
c360,c361
c333,C405,C409,C41
3,C41
6,C41
1
c362,C363,C402
c132
c4to
c134
c330
c213
c403
c404
C411,C414
Etectrotytic
{4700/35V)
C412 Cerar.lc (0.01/AC150V
)
TC101,TC102
FM
ceramic
tf
immer
TCl03 Ccramictrimmer
IC2O1
.rC2O2 AM
ceramictririrmer
Mark Part No. Symbol & Descriprion
ATE,O39
ATE
052
ATC
112
ATC.131
ATC-115
ATH.O49
I24.O30
ATB-636
AT8 067
AT8 069
ATH.O28
ATF,126
ATF
'121
SEMICONDUCTORS
Mark Part
No.
T101
r102
Lt01
L102
L103
L104
L201
FM lF transformer
FM det.transformer
L2O2 Bar-antenna
assembly
L203 AM osc.
coll
T2O1 AM lFcoil
L4O1,L4O2 AF choke
coi
F101,F102 F
N/l
ceramic
fi ter
F2O1 AM ceramicfl ter
Symbol & Description
RESISTORS
NOTE:When otdering rcsistors,
conL)ertlhe resistance
ualue
tnto codeform, ond then reuite the
part no. asbefore.
Symbol & Descriptron
t I L41241
* r M54922P
r r P43001-A
* T HAl156WP
r i PA4008
(PAO001)
r r NJM4558DXC
(NJM4558D
X
)
* * 2SC1919
(2SC1845)
r r JC501
(2SC2603/A/)
** 2SC1384
(2SD438)
*r 2SC1A45
l2sc2240l
2SC53
5
* r 2sc461
(2SC710)
* r 2sD880
(2SD313)
* , 25C2362
t2sc2240l
t t 2sA850-D
r
(2SA850
C.)
(2SBs60-D
")
(2SBs60-E')
t * 2SC1735-D*
(2SC1735
C*)
(2SD438,D')
(2SD438
E.)
a20l
a20l
o107
o108
o329
0330
4202
o109, 0203-0205, o208, 0209,
0313,
0314,O405
0401
o307,o308
0102
or
04,or
05
0402.4403
0309,0310
0321,4322
4323,4324
Mark PartNo.
RD7.P[/]ar-irJ R10r,R135,
R137-R150,
R202
R201, R209-R227. R229, R230,
R232-R240, R243, R250, R255.
R256. R301 R306, R313-R319,
R32t. R322,R325 R329,R334-
8353, R360 R388, R392, R393,
R39s R398, R406 R408, R410,
R431,
R501,R502,R504,R506
R510,R512
R515
R505,R511
R136
R389,R415-R418,R421
R424
R425 R428,R201
R503,R517
R251 R254
R419,R420
Wirewound
{0.47l2W
R52P f ! I_]J
RN7.PO
![n|]F
RD%PSFII IL]J
R
D%PS!C ]J
PD%PM
F ! ]It]J
RD1/8PMf r-lr
rJ
ACN118
ACN-029
ACP.O79
ACT,023
ACT 140
x2l
Carboncomposition
12.2M/l,Wt
Semiflxed
(2k
A)
Rs16
VRlO1
VR302 Varlab
e (BA LANC
E)
v R303,VR3
04
Varlable
(TREBLE,
BASS)
'hfc of Q321-O324
shouclhave
the sarnevatue.

Mark PartNo. Symbol & Description SwitchAssembly
Mark PartNo.
r * 2SB595P-Y*' 0325,0326
(2S8595P
O*-l
(2SB595P-R
"
*)
t r 2sD525P Y"* Q321,Q328
{2SD525P-O.
*
)
(2SD525P-R
" )
"
* hfe
of 0325.-0328should
have
thcsame
value.
Symbol & Description
r * 2sA798
* r 25A7265
(2SA992)
i r 2sA684A
* * ASH
015 S102 Slideswitch
(ANN
CHANNEL STEP)
Mark PartNo.
* ACT128 VR301 Variable
(VO
LUME)
VolumeAssembly
RESISTORS
NOTE.When
ordeinE resistors,
con erl lhe resistonce
ualue
itltocode
form,
ondthen
rewritethe
partno.asbefore.
Symbol & Description
(2S8560)
* * JAl01
{2SA11
15/A/)
* * 2SKt68
(2SK61.GR
)
, wz.o48
tMz
o41l
t KzL120
* KZLO]2
* KZLl40
* wz 2go
r MZ-150
(wz-150)
r KZL056
: t 1s2471
i 1s1555
t1s24131
' * GP-20D
I t 10E2
o305,o306
o1
10,o1l1
ol04
4106
,0206
.o21
4
,421
5
o101,o103
D206
D205
D402
D301,D403
D401
D416
D409
D407,D408
Mark PartNo.
R
D%PM
!rrjJ R354 R359
Headphones
JackAssembly
Symbol & Description
AKN.O29
RD%PS
331J R429,8430
Control Assembly
A
Symbol & Description
Phones
jack(P
HON
ES)
Mark PartNo.
RD]"PM272J R201 F203
r r Jc501
(2SC2603/A/) o13,O14
ControlAssembly
B (GWX-717)
Dr04,Dr05,D2os,D2o4,
D2oi CAPACITORS
lstBol 02)
r KVI320A-3 D1O1
s KV1226
Y D201
a 2-1K261 D411
Mark PartNo.
D2t0 D3t0 Dllt D315 D3l6
D4ro.D4l/ Ma'k PartNo'
D412 D415
D404,D405
Mark Part No.
Symbol & Description
CKDYF
103250 C103
RESISTORS
NOTE:Whenord.ering
resi$tors,
conuert
the resistance
Dalue
intocode
form,
andthen
rewite the
portno.osbefore.
Symbol & Description
* KV13204'3 consistsof threetwln vari-cap
diodeswith rheindenri
cal
characteristics.
* KV1226-Y consists of two vari.cap diodes v!ith the indentical
OTHERS
RD%PM
[]ILJ R4, R5, R7, R8_R11, R14,
R24,
R105-R107,R109 R111
SEMICONDUCTORS
Mark Part No. Symbol & Description
r r ASG-301
I ATF 125
t ASS-O16
AKA.O17
A
KB.O77
AKB.O79
AEC-841
Symbol & Description * * TC4069UBP A4
r * Jc501
l2sc2603lAlJ
* wz 140
\MZ-140)
* wz-l10
{MZ-110)
r wz 157
\MZ-1571
r 1s1555
(1S2473)
5101 Push
swilch
X201 Ceram;cresonator
X2O2 Crystalresonator
T€rmina (ANTE NNA)
Terminal
(PLAY)
Terminal
{PHONO,
AUX/VlDEO,
REC)
o7-o9
D1
D2
D3
D7,D302
pBZ3opO6OFMC Screw
(3x
6)
VBZ30P060FMC Screw
(3x
6)
ABA
258
AKHOO5 Screw Spac'rr

ConnectorAssembly
Mark PartNo. Symbol & Description
r 1s1555 D301
(1S2473)
ControlAssembly
(GWX-721
)
CAPACITORS
Mark PartNo. Symbol & Description
cKDYFl03Z50 Cl,C4
CKDYB331K50 C2
cKDYB102K
50 C3
cEA101M
25L C5
cEA010M50L C101,C102
CEA47OM
25L C6
CKDYF413250 C501
RESISTORS
NOTE:When ordering resistors, conuert the resistance udlue
into code form, ond then rcwite the part no. asbefore.
Mark PartNo. Symbol & Descriprion
RD%PM
IL.|IJ R] R3,R6,Rl2, R13,RI5 R2O,
R25 R28,R101 R104,R108
' RD%PMFN.-lJ R29
SEMICONDUCTORS
Mark PartNo. Symbol & Description
tt L81473 a2
r* TC4069U8P 03
* t PD6004 05
** M74LS42P o1
Symbol & Osscription
r r Jc501 o10-o12,o1
5
{2SC2603/A/)
1s1555 D4,D5,D1B
D20
\1524131
* 2-1K261 D8-D17
* sz,o21 D6,D101
r AEL-365 D5o1-D510 LED
(Red)
r AEL-351 D511 D513 LED
(Green)
OTHERS
Mafk Part
No.
t* Asc,l77 S1 513 Tact
switch
* ASS-017 Xl Ceramicresonator
PBZ25P1
ooFMc screw2.5x
1o
2A

32
e.
EXPLI"ED
vrEL
A
A
-(-u q
B
'o
)/
/ ll
&
B
C
C
o
A
ff-2
9
28
^L^
ffi]+
.2
D
7-{'
7
D
3
2
1
-'KN
;$Nn
-.e 23"e..
-#@
@;;
27 ='l-