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(v)rrtoNeerl
ORDERNO. ARP-230-O
sx-?;0e(SX.2O2LI MODELSX.2O2 COMESIN SIX VERSIONS DISTINGUISI.IED FOLLOWS: AS
Modol Volteg
AM/FM STEREO RECETVER
R6mrrks U.S.A.model
Canada model General export model Australia model E u r o p e a nc o n t i n e n t m o d e l w i t h A M , L W b a n d r u n e r West Germany model with AM-LW band tuner
SX-202/KU
AC12OV nly o AC120V nly o AC11OV ,12OV,22OV and 240V {switchable} AC240Vonly
AC22OV only
sx-202/Kc
sx-202/s
sx-202lYP
SX-202L/HE
sx-202LlHEZ
AC220V only
o This servicemanual is applicableto the KU types. For servicingof tlte other types, pleaserefer to the additional service manual. o Ce manueld'instruction serefdreau modede r6glage, frangais. en . Estemanualde serviciotrata del m6todo de aiusteescritoen espaiiol.
CONT E NT S
't. sPEctFtcATtoNs .....
2. 3. 4. 5. 6. 7. F R O N TP A N E L F A C I L I T I E S PABTS LOCATTON . . . . . . . B L O C KD I A G R A M C I R C U I TD E S C RP T I O N S I PACKING E X P L O D E D I E W A N D P A R T SL I S T . . . V 3 4 5 6 8 9 8. 9. I1. P . C .B O A R D S O N N E C T I O N I A G R A M C D SCHEMATIC IAGRAM D DIALCOR STRINGING D REGLAGE AJUSTE.
12
t5
1 0 . E L E C T R I C A L A R T SL I S T P 1 2 . A D J U S T M E N T S. , . ,
17 19 20
FICINEEFI ELECTFICINIC GCIFIPCIFIATION a I, Mesuno 1 Ljhome, Mesu.o-ku, Tokyo 1::3, Jspen PICINEEFI ELEC:THONICB lNC. 1925 E. oomnguez SE., Long Beach, Cahfo.nra go8lO u.S.A.. IUBAI PIGINEEFI ELEC?FIC,NlC N.V. Keerbenglssn 1, 2740 Beve.en, Eletg,um [EUnclPEI PICI|YEEFI ELECTFIEINICB AUBTFIALIA PTY. LTE!. 178-1821 tsounde.v Fosd, Bnaesde, Vrcco. a 3195. a.usc.atr YX O DEC. 1982 P r i n t e di n l a D a n
1.SPECIFICATIONS
Amplifier Section
P 0 C o n t i n u oA v e r a g eo w e ru t p uits 2 5 us w a t t s p e r h a n n mli,n . ,t 8 o h m f r o m * c e a s 4 0 H e r t z 2 0 , 0 0 0e r t z i t h n o m o r e w o H than0.3%o harmonic tolal distortion.
Total HarmonicDistortion(40 Hertzto 20,000 Hertz, 8 ohms,from TAPE) continuousrated power output N o m o r et h a n 0 . 3 % poweroutput 12.5watts per channel N o m o r et h a n0 . 1 5 % 1 watt per channelpower output No more than O.2o/" Hertz= 4: 1, Distortion(50 Hertz:7,000 Intermodulation AUX) 8 ohms,fror;'r ratedpoweroutput continuous No morethan 0.3% 22 F D a m p i n g a c t o r( 1 k H z , 8 o h m s ) mpedance) I nput (Sensitivity/l PHONO .....2.5mV/5Okilohms ' 150mV/50kilohms T A P EP L A Y ( T . H . D . 0 . 1 %1 , 0 0 0 H 2 ) , L Phono verload evel O . . 150mV PHONO Output Level . 1 5 0m V TAPE REC .... A, B,AseriesB.off SPEAKER Frequency Response ( PHONO RIAA Equalization) . 30Hz to 20,000H2t0'5dB .... l5Hzto50,000Hz+ldB TAPEPLAY Tone Control r9dB (100H2) B A S S. ... rgdB(10kHz) TREBLE Loudness frntour (Volum control setat-40d8 position) . . +8dB (100H2),+6dB (10,000H2) Hum and Noise(lHF, short circuited,A network) .....71d8 PHONOMM.. ...97d8 TAPEPLAY *UsableSensitivity
CaptureRati. o (400kHz) Selectivity AlternateChannel (lkHz) StereoSeparation Frequency Response
..2.ft8 . 50dB . 35dB oa [ ......70d8 ...45d8 ....100d8 ...45d8 ......31d8 . 2 7 d B t( 6 . 3 P V )
. . 30Hz to 15kHz,1!
SpuriousResponseRatio. lmageResponseRatio lF ResponseRatio. AM SuppressionRatio SubcarrierProductRatio. M u t i n gT h r e s h o l d Antennalnput 75 300 ohms balanced, ohms unbalanced
AM TunerSection
Sensitivity lHF, Loop antenna lHF, Ext, antenna Selectivity Signal-to-NoiseRatio lmageResponseRatio lF ResponseRatio. Antenna Miscellaneous PowerRequirements . , AC 120V, 60Hz PowerConsumption. . . 125 Watts(UL),150 VA(CSA) Dimensions . . . . 4 2 0 ( W ) x 9 8 ( H lx 2 1 4 ( D ) m m X X 16-9/16(W) 3-718(H) 8-7116(Dn i) Weight(without package) . . . 4.3 kg (9lb 8 oz) 32OtNlm 30pV .....25dB ....43d8 ....40d8 ...'45dB AM LooP Antenna
Parts Furnished
FMT-typeAntenna AM Loop Antenna Instructions Operating .....1 1 1
FM Tuner Section
...10.7dBf (0.9pV) ....15.3d8f (1.6pV) .37.6d8f(21pYl ....75d8(at85dBf) 7 0 d B( a t 8 5 d B f ) 'O'3Yo .'0.67o
50dB OuietingSensitivity **MONO STEREO Ratio Signal-to-Noise MONO STEREO Distortion(at 65dBf) 1kHz. MONO STEREOlkHz.
*Measured pursuant to the Federal Trade Commission's Trade Regulationrule on Povnr Output Claimsfor Amplifier. *'FM muting functions with this unit when the signalsare weak. The unit's internal wires are therefore treated so that the signals ara not muted when the sensitiviry is measured. NOTE: modification without Specificationsand designsubiect to possible notice,
2. FRONT PANELFACILITIES
L;Nt';K t;K
-IFUNCTION
l-*'-'
L FI-EI-E
r6"
swtrcH O PowER
Push this to s1^ritch and off the unit's power. Power is on suppliedat the depresed ( - ) switch position (ON) and (I) position(OFF). turnedoff at the released
@ voLUMEcoNTRoL
Use this to adjust the volume of the sound delivered throughthe speakers headphones. or The volume is increasedwhen this control is rotated clockwise from the minimum "0" position.
@ HEADPHoNEJAcK
Connectthe plug on the stereoheadphones this jack to when listening soundthroughheadphones. to
( I @ TUNING NDIcAToR TUNING)
This lightsup to indicatethat an FM, AM stationhasbeen tunedi n.
@ ToNEcoNTRoLs
BASS : The bassis increased whenthis control is rotated clockwisefrom the centerposition and reduced when rotatedcounterclockwise. TREBLE : The treble is increased when this control is rotatd clockwisefrom the center position and reducedwhen rotatedcounterclockwise.
(srEREo) @ srEREotNDtcAToR
This lights up automaticallywhen an FM station broadcastingin stereohasbeentuned in.
swrrcHEs @ SPEAKERS
These are used to selectthe speakers through which you w i l l l i sten the sound. to The selected speakers now working. are A: The sound is heard from the speakers connectedto A the speaker terminals the rearpanel. on B: The sound is heard from the speakers connectedto the speaker terminals the rearpanel. B on No soundwill be heardwhen SPEAKERS and B switches A are both released. This is the positionat which the sound can be heardthrough the headphones. NOTE:
No sund will be heard through the geakers when both the A and B switches are depressed if only one et of speakerc has been connected to either the A or B SPEAKERS terminals.
@ BALANcEcoNTRoL
This is normally kept at its center position. lt is rotated when the volume of sound deliveredthrough the left and right channels the speakers headphones of or differs. The right channel volume is reducedwhen the control is rotatd toward the LEFT from the center position while the left channel volume is reduced when it is rotated towardthe RIGHT.
swtrcHEs O FuNcrtoN
PHONO : Press when listeningto records. FM : Press when listeningto FM broadcasts. AM : Press when listening AM broadcasts. to
@ TAPE (ADPT)SWITcH
This is depresed when using a tape deck or adaptorunit connected the rear panelTAPE/ADAPTORjacks. to
@
FREoUENcY scALE
SWITcH @ LOUDNESS
Depress this switch to the ON position when listening to sound at a low levelof volume.This will enhance the bass and treble and give more life to the sound evenat a low volume.
This indicatesthe frequencyof the broadcasting station ( F M ,A M ) . The top levelfigures(88 - 108) indicate the FM band. The bottom levelfigures(55 - 1601indicate AM band. the
@
T U N T N GK N o B
Rotatethis knob to pick up stations(FM, AM).
@
P o w E Rt N D t c A T o R / D t Ap o t N T E R L
3. PARTS LOCATION
NOruSr
. o Parts uithout part number connot be supplied. morh found on some component ports indicotes the impottonce of the ?he I sofety foctor of the port- Therefore, uhen replacing, be sure to use parts of identicol desEnation. For your Ports Stoch Control, the fost mouing items dre indicdted uith the morhs t* ond *. ,* CENERALLY MOWS FASTER THAN '. This classificotion shall be odjusted by each distributor becduse it depende on model number, temperoture, humidity, e tc.
.
Front Panel View
Speaker knob AAD608 Bonnet AN E4I O
Front oanelassemblv
ANM-292 AADO5
P h o n ej a c k AKN{45
Tuning knob AAA{84
e--
Knob lvoLuME) A
AAB.3'I6 Function knob A {TAPE, LOUDNESS) AAD6O6 Function knob B { P H O N O ,F M , A M ) AADO7
Knob B
( B A S ST RE B L E ,B A L A N C E } , AAB-317
RearPanelView
Earthterminal
AC socket AKP-O39 Rear panel
Complex terminal AKX-073
ADG-073
Top View
A ** Fuse(T 1.6A) AEK-121
A *
Power transformer 1120v) ATT.942
Switch assembly
4. BLOCK DIAGRAM
FM F R O N T E N D ( 1 / 3 )
I
FM IF AMP
t-3 O O O
| FM BAL
I
|
75o
L-UNBAL
l- GND AM I LooP L ANT
D6 TUNING
FMIFIDET MPX
L au9 LJ sr-s
(4/41
rdLF
TOR IN
--* ar, I
STEREO
S METER DETECTOR
':*" I
vco DET. OUT- p 691 SlG. IN L OUT
Q6
Q4
LED DRIVER
FM MUTE
+82 AM D4
AM FRONT END
lLch
ernv
REC
trsomvl
E q U A L I Z E RA M P
^:
+q2 -(v4l lt5omvl.
I
sr-4 TAPE (t/21
sr-5 LOUDNESS (2/21
P O W E RO N / O F F M U T I N G
TONECONTROL vR2-2,2-3
i- rroro
lz.smvl
a 5[,
_ l r 4 .r v I PHONES
fT",
(3l4.,4/41
1,"=rd;Tt--17
G:405dB
POWER AMP sr-4 (2/2't sr-5 (2/2 |
I Rch
l-enor.ro
REC
L PLAY
POWER SUPPLY 8 PROTECTOR
s2-2
TO
Rch S PEAKE RS
+82 srol acr2ov | 6OHz I
( 13.4V
SP. B (t/2' t
qI a ri" l
\,, o{ll
ON - OFF ON - OFF ON - OFF ON - OFF ON - OFF S2-I : S2-2: SPEAKERS A SPEAKERS I
ON ON OFF OFF
;o\--
D7
^ 1,,
OFF
, 1,,
Sl-l:
F U N C T I O( P H O N O ) N
F S I . 2 : F U N C T I O( N M ) ( s r - 3 : F U t { c T r o Na M } SI.4 : TAPEMONITOR SI-5 : LOUDNESS
SIOI : POWER
ON -
5 . C I R C U I TD E S C R I P T I O N S
FM Front End A unitized variable capacitor type front end unit is used consisting of an FET RF single stage amp, Iocal oscillator/mixer IC and rn IF transformer. FM lF Amp, Detector and MPX Circuit A 2-transistor IF amp with ceramic filter is used and the next stage has an IC (M51533L) containing the FM IF detector and MPX circuit. The block diagram of IC M51533L is shown in Fig. 5-1. This IC uses a peak detection method which can be adjusted with a single coil. The PLL method is employed to reconstitute the 38kHz sub-carrier for the MPX circuit. The IF signal is input at pin 1 and the detection output is obtained from pin 5. The detection output passesthrough the muting Q4, goes to pin 9, passes through the MPX circuit and the stereo signals are obtained from pins 11 and L2. In addition, this unit detects the presence or absence of a pilot signal to automatically switch between stereo and mono reception by R14 which is connected to pin 14. When a stereo signal is received, pin 13 drops to the low level to light the stereo indicator. When pin 2 is grounded, the PLL VCO and FM IF operation stop (for AM). FM Muting and LED Driver With this unit, muting is automatically activated when the antenna input drops below 10pV. As the antenna input decreases, the voltage at pin 3 drops, Q5 is turned off and Q6 is turned on. As a result, the gate voltage of Q4 drops, Q4 is turned off and the detector output circuit is blocked (Fig. 5-1). When an FM or AM station is tuned in, the base potential of Qb is raised, Q5 is turned on and the tuning indicator lights.
M 5 r5 3 3 L
REGULATOR
L E V EL METER CIRCUIT
INPUT BUFFER
S T E RE O S WI T C H
AM s t-3
T
Fig. 5-1
L OUT
R OUT
F M l F , D e t e c t o ra n d M P X c i r c u i t
AM Tuner This uses a variable capacitor type tuning circuit composed of three transistors, a 2-transistor front end and a single transistor AM IF detector. AF Section The equalizer circuit has a low-noise operation amp (2 channel)M5218P. The power amp has a 25 watt output power IC STK4141-2S(SeeFig. 5-a). The tone control circuit is placed in the negative feedback loop of the power amp. Protective Circuits This unit has a circuit to detect DC voltages at the power amp outputs and a muting circuit that operates when power is turned on and off. Fig. 5-2 shows the construction of the DC voltage protection circuit. When a DC voltage
appears at the power amp output, either Q13 (plus) or Q14 (minus) is activated depending on the polarity of the DC voltage and a trigger is applied to D15. This turns on Dl5, +B1 is shorted, the fuse on the primary side is cut and the power supply circuit is shut off. Fig. 5-3 shows the power on/off muting circuit. Time constant t1 is longer than t2 so that immediately after the power is turned on, the emitter potential of Q15 exceedsits basepotential, QL5 is turned on to activate Q16 and Q17 and ground the signal. A few seconds later, the base potential of Q15 risesto turn off Q15 along with Q16 and Q17. When the power is turned off, the charge of C161 passesthrough D18; it is almost completely discharged in an instant to make the base potential of Q15 zero. However, becausethe chargeof C160 remains, Q15 is turned on and muting is activated in the same manner as when power is turned on.
POWER AMP ( L ch ) TO SPEAKER
swrTcHEs
Fig.5-2
DC Voltageprotection circuit
M A IN VOLUME
- - : - - - - - J
BALANCE VOLUME
!
Dt7 Dr6 RtSl
;-:'i t
- J z
F i g .5-3
P ow erON /OFF muti ngci rcui t
I lNl(+)L
r8 t N2 ( + ) t7 lN2(-)
z l
t N t( - )
3
GND
5
6 8 MUTING
9 Vee
r
O OUTI
1 O U T2
3
t Vee
4
4
L__t
t5 16 GN
t
I f il t
l
F i g .5 4
E q u i val ent rcui tof pow erl C ci
6. PACKING
Mark No. Part No. Description Side pad Operatinginstructions (English) Loop antenna assembly T-type antenna Packing case
1. 2. 3. 4. 5.
AHA-335 ARB-525 AT8-076 ADH-Oos AHE-l02
7. EXPLODED IEW AND PARTS LIST V
NOTES; o Parts without part number cannot be supplied. o The I marh found on some component parts indicates the importance of the safety foctor of the part. Therefore, when replacing, be sure to use parts of identical designation. o For your Ports Stoch Control, the fast mouing items are indicated with the marks t* ond i. rT GENERALLY MOTTESFASTER THAN *. This classification shall be adjusted by each distributor because it depends on model number, temperature, humidity, e tc.
A
No.
Part No.
Description Bonnet Screw (3 x 8l Power transformer (1 20V) Screw (3 x 6) Speaker knob Screw(3x6) Nut K n o b B ( B A S S ,T R E B L E , BALANCE} Nut Tuning knob Knob A (VOLUME) Front panel assembly Function knob B (PHONO FM, AM) Function knob A (TAPE, LOUDNESS) Pushswitch (POWEF) Power knob Cabinet bumper Tuning shaft Nylon rivet Screw (3 x 1O) Fuse (T 1.6,4) AC socket AC power cord Complex assembly PhoneJack (PHONES)
No.
Part No.
Descriptions Speaker switch assembly Switch holder Pully assembly LED assembly Earth Mounting plate Pully assembly Pully assembly Pully holder H e a d p h o n ej a c k a s s e m b l y Chassis Bottom Plate Binder Earth terminal Rear panel Tuning drum Smoother Pointer holder Pointer assembly Heat sink Wire holder
A
1. 2. 3. 4. 5. 6. 7. L 9. 10. 11. 12. 13. 14.
ANE410 BBZ30P080FZK ATT-942 PMZ30P060FMC AADO8 VMZ30P060FMC NKgOFUC AAB-317 NKTOFUC AAA-O84 AAB-316 ANM-292 AADO7 AAD06 ASG-541 AADOs AEC-784 AXA-373 AEC471 MTZ3oP100FZK AEK-121 AKP{39 ADG{73 GWM-267 AKN-045
50. 5 1. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70.
B
A**
15. 16. 17. 18. 19. 20.
A** A A
i*
2 1. 22. 23. 24. 25. 26. 27. 28.
A
SUJSLYXSF Speaker switch ACG-O17 C e r a m i c { 0 . 0 1) BBT3OPOSOFZK Screw (3 x 8l
D
1
2
3
,^-2
U
A
.g
\ \
E
2
22" | 727^)<
@
\--.
Z'7
./2,
\
@
q---[ ,/
\
,/
t e @
m tr
JF]
/tri
Sr
@
*N
,,-g$ _ f
>l u I
@9
>\-
,\r #E
z'
D
\rs
9
t0 tl
7
3
1
2
4
@
? ' 2 0
A
B
V. I
C
s"-<))|\ \is-j=
^'/ q, -S=),)i
Ks)
hs
6
D
I
I E 8.1 . BO A RDS CO NN EC T2IO ND IAGR AM P.C
and lC's ExternalAppearances Transistors of
2SC1923
3
COMPLEX Ass'y
Q3 A2
GWM 267
2SC461
'":":f'+irvpN. -S:"B
2SA1115 2sc26lt3
"'M, illill .ll!jil"
a\r,,
, ML
sTK4141-2S
C
M51533 L
'.',-.
det M521aP NJIT44558D x
@d
I
It ttJtll
LED Ass'y
2
3
4
5
6
I
q9
q0
Q7 Qro
ot6 ofi
qt7
32- O2l
4
5
6
I
7
8
I
HEADPHOT\E JACK Ass'y
B
SWITCHO UNSWITCHEO roow MAx. toow MAx.
c
D
POINTERAss'y
l
lt
7
I
I
I
2
9. SCHEMATICDIAGRAM
3
A ","o
A
, .oo^ Io,
F M I Lzsn uraaL
L n"o
lil,", ot,, FM lF aMP
B
LED
ol5-17 POWR il/OFF
cr60 22olo
_.- _.eI' u'b Fr
"to" ,1".
Ithv'l
L "."
ffi l'",
t-*;
""" "I',2, r r,''
cr57! *cr4o I l REC
, '+
Lct25 Tzzo
4Rr45 lrok
f---
J:i
|
"'
47' --c!-r
rook I crr4 .'; a:-
D
;F
cr45,r46 ACH-249
vR 3
RHAAAV5502
Qr,2,7,9 o4 o 5,6,13,16,r7 oa ot2 Q t 4 .| 5
2SC461 25K246 JCSd 2SA992 2S0aao J4101
or,3 o2 D4 oa D9 011
rN4t48 wz- o75 2-1K261 KZL14O RB4O2 wz-i 3 0
iN4148 O12 0r3,r4 roE 2FO 0r5 8CR6AM-4 SZ-O2? Dt6 D17,18 tN4148
2
3
4
5
6
NOTE: The indicated semiconductors are representatiue ones only. Other alternatiue semiconductors may be used and are listed in the parts list.
A
L RESTSTORS. Indietd in o, %W, 7.W,i5% tolerance unl6s otheMis notd k; k!) M; Ma, lF); !1%, lcl: !2%, (K),110%, (Ml; i20% tolerance 2, CAPACITORS: Indicaid in capachy kF)/voltage (V) unle$ otheBis p; pF. ldiBtion whhdt voltage is 50V except etftt.otytic
I
notd capaci
a3 F M I F I O E TA M P X
3. VOLTAGE S i e n a tv o l t a s e a t ( 2 5 W + 2 5 W , 8 a ) o u t p l t E; DC voltase (V) at no j.put sisnal Fli Valuein{ ) bDCvoltageatratdporer.
{1kHz)
4. OTHERSi , Signal route. + A i^Adiusting po,nt. _ I re /n matk round or toFe componenl pans indic.rs the in podanc-e of rhe salety lactor of the pdn. lh.relore, whcn repttrrng, be ere to u* pafts of identical designarion. X markd capeitoB and rsistoE h&e psds numbe6. This is the basic $hmatic diagram, but the etual vary due to improvemenb in dsisn. circut may
-
LEo A3rr y
!--"-;-;-t
!
I i": T_T
I
0 066 aEL- 40? !
*
.
:
SITCHES:
J'
cr8; t-reooo et I {"at r5k
COMPLEX Sl-t : 0 :
A.sry F U N C T I O N( P H O N O ) FUNCTION (FM) | FUNCTION (AM) TAPE MONITOR LOUONESS
l -? 2 e
LEO
L--:"*
-J
sr-2 sl-3 SI 4 51- 5
r
oN 9! oN oNON _
gfI oFF 9!r 9[
OFF
o3*'ut*
POINTER A3s'y
"*.;'-l
52_1 52.2: SPEAKERS ( A) SPEAKERS{8) OUTSIDE OF PC BOARO SlOl : POWER The undedind
B
9! oN ON -
OFF gfr
OFF
indi@tes the switch Dosition.
o t 3 , r4 PROTECTOR COMPLEX AsBry (3,/3) A r,o, ort-"., ---------1, AEK-r?r : Furor I sror a
A
uNswrTdED swrrdEo roow MAr roow Md
=-^., -;fi,'
HEAOPHONE ACK A33'y J
-___J
/25
--1F
ARrsT ro
-
*-1
I
qr48 E2FO -o27 414 8
I 52 SUJeLYXSF
I
L__
S W I T C HA 3 . ' y
4
5
6
16
l--
1 O .E L E C T R I C A LP A R T S L I S T
NO?ES; o ll/hen ordering resicfors, first conuert resistancewlues into cod,eform as shown in the following examples. Ex. 1 vthen there are 2 effectiue digits (any digit apart from 0), such as s60 ohm and 47h ohm (toleranceis shown by J = iVo, and K - lOVo).
560a 47ha 56 x 10t 47 x lO3 561 . . 473 . .
0.5{t
0R5..
t(}
010..
RD%PS E|6tflr RD%PS @AgJ RN2H oBEr
asrPotloK
Ex. 2 When there are 3 effective digits (such as in high precision metal film resistors). 5.62ha 562 x loo 5621. . . . RN%SA EGiltrDF o The b, marh found on some component parts indicates theimportance of the safety factor of the part. Therefore, when replacing, be sure to tlr,e parts of identical deeignation o For your Parts Stoch Control, the fast mouing items are indicated with the marhs ** ond *. ** GENERALLY MOVES FASTER THAN *. This classificotion shall be adjusted by each distributor because it depends on model number , temperuture, humidity, etc.
Miscellaneous PartsList
P.C.BOARD ASSEMBLIES lVlark PartNo.
GWM.267 Symbol & Dccription Complexassembly jack assembly Headphone LED assembly Pointerassembly Switch assembly
Mark
Part No.
Symbol & Deccription
C E A1 0 1 M 5 L 3 CEA 21M OL 2 1 CEA 71 6L 4 M CEANL R2M 0 2 5 coMA 122K50 coMA 562K50 coMA 153K 50 coMA 333K50 caMA242J50 coMA 822J50 coMLA 124K50 cosA 182J50 cosA 511J 0 5 ccDUJ050c 50 ccDsL 270J50 c c D s L1 2 1 J 5 0 c c D S L1 0 1 J 0 5 ccDsL 22' tJ 50 ccDcH 150J 50 ccocH 220J 50
cl50 c l 4 7 ,C l 6 0 cl43 c l 0 1 ,c l 0 2 c l 3 1 ,C l 3 2 c l 5 , C l 3 3 ,C l 3 4 cl9, C20 c127,C128 c l 0 7 ,c l 0 8 c109,cl10 c l 2 9 ,C l 3 0 cl8 c34 c7 c125.C126 c30 c113,Cl14,Cl17,C118 c l 0 3 ,c l 0 4 c24 c36
c2-c5, c23, C29, C32, C40, C42 c 6 , c 8 , c l 3 , C 4 3 ,C l 1 5 , C l 1 6 , c144,c152, Cl56, C157 c39, C141 C142 , c41 (0.01/1 C148ceramic 50Vl
OTHERS Mark PartNo.
ATT-942 ASG-541 ACGOl7 AEK-121 ADGO73 AKP.O39 Symbol & DGcription
A A A A A A
* ** **
T101 s101 c501 FU1 1 0
Poraprtransformer ('1 20Vl Pushswitch (POWER) (0.01/ACl25V) Ceramic Fuse{Tl .64} AC power cord AC socket
ComplexAssembly(GWM-267)
CAPACITORS Mark PartNo.
ACH-249 CEA1O1M OL s CEA R22M sOL C E AO R l M s O L CEA R47M sOL C E A O l O Ms O L C E A l O O Ms O L Symbol & Description C145, C146 Electrolytic(3300/42V) cl 39 cI1,C21,C22
CKDYF 032 0 1 5 CKDYF 223250 CKDYX47PM25 CKDYB 222K50 ACG{19
c't2 cl0
c 1 4 , C 1 7 , C 2 7 , C 1 1 1 ,c 1 1 2 , c123,C124 c16, C28, C31, C38, c l 1 9 , c l 2 0 , c 1 3 8 ,C l 5 4 , C l 5 5 , c l 6 1 c33, C121 C122 , c26,Cl 05,C1 06 c 1 3 5 ,C 1 3 6 C l 3 7 ,C l 5 1 ,c l 5 3 , c9, c37,Cl40
CEA 22OM25L C E A4 7 O M1 O L CEA 47OM25L C E A 1 0 1 M2 5 L
17
RESISTORS Note: When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no, as before. Part No. Symbol & Description VRl VR2 VR3 Rl66 R187 Volume(260k1 (100kx2,1M) Volumeassembly (5k) Semi-fixed
COILSAND TRANSFORMERS
Mark Part No. ATH{53 ATH.O58 ATEO58 ATB{85 ATBO84 Symbol & Description
L1 , L2 AF choke coil L3 Micro inductor Tl T2 T3 FM detector transformer AM antennacoil A M o s c i l l a t o rc o i l
* * *
ACT-162 ACT02 RHBSAVSSO2 ACN-131 ACN-140 trOtr RD'4PMFL RD/.PMootr
A
A
1\
R D l / 8 P Mo t r E J
Wire-woundlO.22x2,Vt'll ATFO83 Carboncomposition ATFO84 Q.2M,1l2wl Rl2, R155-R159, l73 R R3E, R36, Brls, 8116, Rl47-R154, OTHERS R160-R165, R167. 8 168, R172. P.17 4, R l 7 5 ,R l 8 0 Part No. Other resistors ** ASG412
F 1 , F 2 F M c e r a m i cf i l t e r F3 AM ceramic f ilter
Symbol & Description
51
SEMICONDUCTORS
IMark Part No.
Symbol & Description
AWBO44 AKX{73 AEC-940 PBZ30ZP060FMC ABA.271
Push switch (FUNCTION,APE, T LOUDNESS) FM Front+nd Complexterminal
** ** **
25C461 (25C19231 sTK4141-2S M51533L-B M 5 2 1 8P (NJM4558DX} 25K246 (25K34l 2SD880 (2SD3131 2S4992 {2SA7265) JC501 (2sc2603) JA101 (2SA1115) 1N 4 1 4 8
01, 02, 07, 09 ol 1 o3 010 o4 012 o8 0 5 , 0 6 , 0 1 3 ,0 1 6 .0 1 7 0 1 4 ,O l 5 D 1 ,D 3 ,D 1 2 , D 1 7 , 1 8 D
B ivet Screw(3 x 6) Screw
Headphone Jack Assembly
Mark Part No. Symbol & Description P h o n ej a c k ( P H O N E S ) R176-R179
AKN{45 trtrtr J RD'/4PM
**
A**
LED Assembly
Mark Part No.
a**
*
Symbol & Deecription D5 D6 ( R e dS T E R E O I (Green TUNING)
(us1035) (1520761
(1Sl555)
* *
AEL4O6 AEL-407
PointerAssembly
D9 Dl3,Dl4 D15 D4 D8 Dl6 Dl1 D2
Mark Part No.
A * A * A *
* * * *
RB4O2 1OE2F D BCR6AM4 2-1K261 KZL140 s2427 wz-l30 (MZ-1301 w2475 (MZO75l
Symbol & Description D7 (Red) Pointer
* AEL4Os AAF-I 8 1
Switch Assembly
Mark Part No.
Symbol & Description 52 Push switch(SPEAKERS)
**
SUJSLYXSF
1A
1 1 . D I A L C O R DS T R I N G I N G
1. Remove the bonnet. 2. Remove the tuning drum from the shaft of the tuning capacitor. 3. fie one end of the cord to the stud A located inside the tuning dmm. 4. Rotate the tuning capacitor right around until the rotor blades are fully intermeshed. 5. Secure the tuning drum back onto the tuning capacitor shaft, making sure that the securing screw B faces directly upward. 6. Passthe cord out through the small opening in the circumference of the tuning drum (see diagram), and then take it over pulleys C and D in that sequence. 7. Wind the cord around the tuning shaft 3 times. 8. Passit over pulley E, wind it around the tuning dmm 1 time, and finally tie it to the spring hook F so that it is tensioned. 9. Tum the tuning shaft, ild check that the cord moves smoothly. 10. Cut off any excesscord. 11. Turn the tuning shaft counter-clockwise as far as it will go. 12. Align the dial pointer with the starting point of the dial scale, and then pass the cord over it. 13. Check that the dial pointer is in line with the starting point of the dial scale. 14. Finally apply the locking paint to the cord securing positions (stud A and spring hook F) and the dial pointer connection.
Starting point
I
E nvr
I
r g
t-T-t-l
Dial pointer
II
Tuningdrum
12. ADJUSTMENTS
FM Tuner Section o Check that the dial pointer indicates a starting point. o Connect the SIGNAL meter between terminal no. 1 of complex assembly and the ground. o In principle, no adjustment should be made on FM tracking. (See page 2I, if. necessary.) . Set the FM switch to ON and connect terminal no. 6 to the ground.
Step FM SG (400H2, t75kHz deviation) Frequency Level 98MHz 98MHz 98MHz Position of dial pointer Adjustment point
Adjustment procoduro
1
66dB
46dB
98MHz 98MHz 98MHz
T1 T6 T1
set the output of the REc ouT terminalto the maximum value.
Set the SIGNAL meter to the maximum value. Adjust the output of the REC OUT terminal distortion to the minimum level.
2. 3. 4. 5.
66dB
D i s c o n n e c tt e r m i n a l n o . 6 f r o m t h e g r o u n d .
98MHz I OOOB Not modulated 98MHz 66dB I * Stereom o d u l a t i o n
98MHz
VR3 T6 (within r90" )
Set the signal of the terminal no.4
to 76kHz lt2OOHzl.
6.
98MHz
Minimize the distortion of the REC OUT terminal signal.
NOTE:
Connect the MPX SG fo the FM SG external modulator terminal and set the modulation of Main (lkHz, L+R) t67.5kHz deuiation, Pilot (19hHz) +7.5hHz deuiation.
(TC1) \ T 2
TC7
TC6
T6
TCs
@/ (r4)----_@6
_ (rc2) @trst uoFT3 \___
S
,/
TC4
TC3
No.1 -.-No.4
Y
T1 Adjustment points in brachets SX-202L (Low Waue) only. for
@vns
No.6-1_!
poi F i g . 1 1 -1 A dj ustment nts
FM tracking
Step FM SG (40OHz, t75kHz deviationl Position of dial pointel
Frequenry
1
Adjustmont point TC7
Adjustment procedure
Lewl
2.
lO6MHz
1odB
106MHz
TC5 TC6
Set the SIGNAL meter to the maximum value.
3.
4.
Confirm that the dial pointer does not get out of position at 106MHz and 98MHz.
NOTE:(For SX-202L IHEZI
. When 87.6MHz can not be receiued with thb unit, ad,just the oscillator (TC7) and then it can be received. It is prohibited, to receiue 87.2MHz or below and, so after having adjusted the oscillator, make sure that it does not receiue 87.2MHz or below.
AM TunerSection o Checkthat the dial pointer indicatesa starbing point. o Turn ON the MW switch. o Connectthe SIGNAL meter between the terminalno. 1 of complexassembly the gxound. and
Step
AM SG (400H2,30% modulation)
Frequoncy I Level
Position of daal pointor
Adiustment point TC3
Adjustment procedure
I
13 9 5 k H z 603kHz
100dB 100d8
13 9 5 k H z 603kHz
Set the SIGNAL meter to the maximum value.
2.
J.
T3
to 2 above.
Set the AM SG to 3OdB output level, repeat steps
4
1395kHz 603kHz
R e p e a t s t e p s4 t o 5 u n t i l m a x i m u m s e n s i t i v i t y i s a t t a i n e o . Set the SIGNAL meter to the maximum value.
5. 6.
LongWave Section(SX-202L/HE, HEZ only) o Set the AM BAND switch to the LW position.
Setp AM SG (40OHz, 30% modulationl Frequency
I
Level
Position of dial pointer 254k{z 16 4 k H z
Adjustment point
Adjustment procrdure
254kHz 16 4 k H z
100dB
10 0 d B
TC2
Set the SIGNAL meterto the maximum value.
2.
T5
3.
4. 5. 6.
S e t t h e A M S G t o 3 0 d B o u t p u t l e v e l ,r e p e a t s t e p s 1 t o 2 a b o v e .
254kHz
16 4 k H z
50dB 50dB
254kHz 16 4 k H z
TC1
Set the SIGNAL meter to the maximum value.
T4
R e p e a t s t e p s4 t o 5 u n t i l m a x i m u m s e n s i t i v i t y i s a t t a i n e d .
+.-