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(D rrloNEEFl'
ORDERNO. ARP-232-0
: - _ t
I I
sixr3Gl3
(SX-303L) MODEL SX-303 COMESIN FIVE VERSIONS DISTINGUISHED FOLLOWS: AS
Model Voltage AC120V only AC120V only A C 1 10 V , 'l2OV ,22OV and 24OV (switchabte) U . S . A .m o d e l
Canada model
AM/FM STEREO ECETVER R
Remarks
sx-303/KU sx-303/Kc
sx-303/s
SX-303L/HE sx-303L/HEZ
G e n e r a le x p o r t m o d e l Europeancontinent model with AM-LW band tuner West germany model with AM-LW band tuner
AC220V only AC220V only
o This servicemanualis applicable the KU types. For servicing the other types, please to of refer to the additional service manual. o Gemanueld'instructionse refdreau modede r6glage, frangais. en o Estemanualde servicio trata del m6todode ajusteescritoen espafiol.
CONTENTS
1. 2. 3. 4. 5, 6. 7.
SPECIFICATIONS F R O N TP A N E LF A C I L I T I E S PARTS LOCATION B L O C KD I A G R A M C I R C U I TD E S C R I P T I O N S . PACKING E X P L O D E D I E WA N D P A R T SL I S T V
2 3 4 5 6 8 9
8. 9.
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
12 15 17
SCHEMATIC IAGRAM D E L E C T R I C A L A R T SL I S T . . 10. P 11. DIALCORDSTRINGING 12. ADJUSTMENTS...
......
19 20
nEcucr
AJUSTE ...
22
24
PICINEEFI FIC|NEEFI FfoNEEFI PI('NEEFf
ELECTFICINIC CclFlPClFIATIClN 4-1, Meguno 1-chome, Mesuno-ku, Tokyo 1F3, Japan ELECTFICINI9 1925 E. Dorninguez St., Long Beech, Catifonnia gOB1O U.S.A. IUAAI lNC. ELEcrFloNlc N.v. Keerbengtean 1,e74o Bevenen, Betgium [EuFtoPEI ELECTFICINIGB AUaTFIALIA FTY. t-lO. lzA-le4 Boundany Ftoad, Bnaeside, Victonier 819F, .Ausrnatia YX O DEC.1982 P r i n t e di n l a p a n
1.SPECIFICATIONS
Amplifier Section
C o n t i n u oA v e r a g eo w e r u t p us 4 5 us P it O p e r h a n n e l i,n . , t 8 o h m f r o m watts* c m a s 4 0 H e r t z 2 0 , 0 0 0e r t z i t hn o m o r e o H w than0.3o/o harmonic total distortion.
Total HarmonicDistortion (40 Hertz to 20,fi)0 Hertz, I ohms,from TAPE) continuousrated povrrcr output N o m o r et h a n 0 . 3 % 22.5watts per channelpower output . . . . N o m o r et h a nO . 1 5 y o I watt per channelpower output
CaptureRati. o Alternate ChannelSelectivity (400kHzl (lkHz) StereoSeparation F r e q u e n cR e s p o n s e y
..2.5d8 . . 50dB . . 35dB
.. 30HztolSkHz,1ffOt
SpuriousResponseRatio. ......7ft8 lmageResponseRatio ....45d8 lF ResponseRatio. ....100d8 AMSuppressionRatio ...45d8 ......31d8 SubcarrierProductRatio. Muting Threshold 27dBf (6.3pV) AntennaInput . . . 300 ohms balanced, ohms unbalanced 75
l*"r..irr"ii""oiri.r,i""it,i""r,rlrt,ill'iJir1"=t;?1, Sensitivity
8 ohms,from AUX) continuousrated power output No morethan 0.3% DampingFactor(1 kHz, 8 ohms) 22 I nput (Sensitivity/l mpedance) PHONO .....2.smV/S0kilohms T A P EP L A Y . . . 150mV/50kilohms . L P h o n o v e r l o a d e v e l( T . H . D . 0 . 1 % 1 , 0 0 0 H 2 ) O . . 150mV PHONO Output Level TAPE REC . 1 5 0m V SPEAKER A, B, A series off B, FrequencyResponse P H O N O( R I A A E q u a l i z a t i o n ) . 30Hz to 20,000H2t0.5d8 TAPE PLAY 1 5 H zt o S O , O O O H z + ] O A Tone Control i9dB (100H2) B A S S. 19dB(10kHz) TREBLE Loudness Contour(Volum control setat-40d8 position) . . +8dB (100H2),+6dB (10,000H2) ( H u m a n d N o i s e l H F , s h o r tc i r c u i t e dA n e t w o r k ) , P H O N OM M . . 71dB TAPEPLAY ......97d8
AM TunerSection
32O1N lm 30gV . 2ft8 . . . ..43d8 ....40d8 .....45d8 AM Loop Antenna
f HF, Loop antenna lHF, Ext. antenna Selectivity S i g n a l - t o - N o i Re t i o sa l m a g e e s p o n s ea t i o R R lF ResponseRatio. Antenna Miscellaneous
PowerRequirements . AC 120 V, 60Hz PowerConsumption. . . 190 Watts(UL), 22S VA(CSA) Dimensions . . . 42O(W) x 98 lHl x 214 (D) mm 1 6 - 9 / 1 6 ( WX 3 - 7 1 8 ( HX 8 - 7 1 1 6 ( Di)n ) ) Weight(without package) . .5 kS (11 tO)
Furnished Parts
FMT-typeAntenna AMI-oopAntenna Instructions Operating ......1 ........1 1
FM Tuner Section**
UsableSensitivity.. 50dB OuietingSensitivity MONO STEREO Ratio Signal-to-Noise MONO STEREO Distortion (at 65dBf) MONO lkHz. S T E R E Ol k H z . .10.7d8f(O.9pV) ...15.3dBf(1.6pV) ..37.6d8f (211ty1 ...75d8(at85dBf) . . 70dB(at85dBf) ...0.3Yo ...O.6Yo
'Measured pursuant to the Federal Trade Commission's Trade Regulation rule on Povver Output Claims for Amplifier. **FM muting functions with this unit when the signals are weak. The unit's internal wires are therefore treated so that the signals are not muted when the sensitivity is measured. NOTE: Specifications notice. and design subject to possible modification without
2
2. FRONT PANEL FACILITIES
swrrcH O powen
Push this to wrritch on and off the unit's power. Power is (r) suppliedat the depressed switch position (ON) and (I) position(OFF). turned off at the released
@ voluruEcoNTRoL
Use this to adjust the volume of the sound delivered through the speakers headphones. or The volume is increased when this control is rotated clockwise from the minimum "0" position.
JAcK @ HenopHoNE
Connect the plug on the stereo headphones this jack to when listening soundthroughheadphones. to
(TUNING) tNDIcAToR @ ruruIruG
This lights up to indicatethat an FM, AM stationhasbeen tuned in.
@ rorue coNTRoLs
: Thebass increased is whenthiscontrolisrotated clockwisefrom the center position and reduced when rotated counterclockwise. TREBLE : The treble is increased when this control is rotated clockwisefrom the center position and reducedwhen rotated counterclockwise. BASS
(srEREo) @ sreneo rNDrcAToR
This lights up automaticallywhen an FM station broadcastingin stereohasbeentuned in.
swrrcHEs @ speerERs
These are used to select the speakers through which you will listento the sound. The selected speakers now working. are A: The sound is heard from the speakers connectedto A on the speaker terminals the rearpanel. B: The sound is heard from the speakers connectedto the speaker terminals the rearpanel. on B No soundwill be heardwhen SPEAKERS and B switches A are both released. This is the position at which the sound can be heardthrough the headphones. NOTE:
No rcund will be heard through the spakers when both the A and B switches are depressed if only one set of speakers has been connected to either the A or I SPEAKE RS terminals.
@ eeLeNcEcoNTRoL
This is normally kept at its center position. lt is rotated when the volume of sound delivered through the left and right channels the speakers headphones of or differs. The right channelvolume 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.
swrrcHEs @ rurucrroN
PHONO : Press when listening records. to FM : Press when listeningto FM broadcasts. AM : Press when listeningto AM broadcasts.
swrrcH @ rape (ADPT)
This is depressed when using a tape deck or adaptor unit connected the rear panelTAPE/ADAPTOR jacks. to
@
FREoUENcY scALE
swtTcH o LouorrrEss
Depress this svrritch the ON position when listeningto to sound at a low levelof volume.This will enhance the bass and treble and give more life to the sound even at a low volume.
This indicates the frequency of the broadcasting station ( F M ,A M ) . The top levelfigures(88 - 108) indicate the FM band. The bottom level figures (55 - 160) indicatethe AM band.
@
@
TUNTNG KNoB
POWER|ND|CATOR
Rotatethis knob to pick up stations(FM, AM).
3. PARTS LOCATION
NOTES: . Parts without part nu ber connot be supplied. . The b morh found on aome component ports indicates the importonce of the sofety factor of the port- Thereforc, uhen replocing, be 6ure to use ports of id.enticol designation. . For your Potts Stock Control, the fost mot)ing items are indicated u)ith the moths ta and l. '' GENERALLY MOWS FASTER THAN '. Thb claesificotion shall be odjusted by eoch di;tributor becouse it deDends on model numbe f , te mperature, humidity, e tc.
Front Panel View
Speaker knob AAD60A
Front panelassembly
Bonnet ANE4lO
ANM-293
..-":.n
AAD$O5
P h o n ej a c k AKN-(X5 Knob B
f\,-
KnobA (vo LU1M E)
AAB316
Functionknob A {TAPELOUDNESS) , AAD06
Function knob B ( P H O N O ,F M , A M ) AAD607
( B A S ST R E B L E B A L A N C E ) , , AAB3I7
RearPanel View
Earth terminal
A
ac socket AKP.O39
Complex terminal AKX{73
Top View
l\r*t Fuse(T2.5A) AEK-123
AWB{44
**
A** Push swirch (POWER' ASG-541
tc
M5153L
Switch assembly
4. BLOCK DIAGRAM
FM F R O N T E N D ( 1 / 3 )
MIX AMP
FM.IF AMP
| . FM
T3 O O O
BAL
I
L r rrupar
l- cND
AM I LOOP L ANT
FT.I IF,/OET MPX
r
f
RE6ULA. r R tx
METER OETECTOR
LED DRIVER
FM MUTE
AM IF AMP
+82 AM 04
rcr i lrJ Itfr
r-;1-l
i I
AM FRONT NO E
FM (Lch) FM(Rch)
lLch
crav
REC
[5dtl
EQUALIZERMP A
sr-l
PHONO
sr-4 TAPE lt/2) | (t/4) (t/? )
sr-5 LOUON ESS (?/2)
POWERON,/OFF MUTING
TONE CONTROL vR2-2,2-3
i- ,"o"o
lzsmrl
t'Ery I pHoNEs
r_134,4/41
ffi--D"t
o='""o'
POWER AMP
f
Rch
eiror,ro
REC
sr-4 | 2 / 2t
sr-5 ( 2 / 2)
l-".o"
POWER SUPPLY A PROTECTOR s2-2
+92 ( 15.4V
SP- B
TO
Rch SPEAKE RS
(vzl
l
I"o
^ ],,
ac r20v 60 Hr
07 s2-l
SP-A lt/2)
SI-l
: F U t { C T I O N( P H O t l O )
S I - 2 : F U N C T I O{ N M ) F s r - 5 : F U t { c T r o N( A M ) SI-4 : TAPE MONITOR
sr-5: LouoNEss
9!L- oFF oN -.9!E oN -.g_Eq ON --qEE or -_q!!
S2.I : S2.2:
SPEAKERS SPEAXERS I
_9_l!- oFF !-!L - oFF
sror i PoWER
oil -
oFF
5
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, local oscillator/mixer IC and an 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 detdctor 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 frorn pins 11 and 1'2. 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 Q5 is raised, Q5 is turned on and the tuning indicator lights.
nrtr F??
|
OETECTOR
L E V EL M E T ER CIRCUIT
INPUT B UF F E R
S T E RE O 5 W r T CH
I
L OUT
R OUT
a F i g . 5 - 1 F M l F , D e t e c t o r n dM P Xc i r c u i t
AM Tuner This uses a variable capacitor type tuning circuit composed of three transistors, a 2-fuansistor 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 45 watt output power IC STK4141-2S(SeeFig. 5-4). 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 D15, +81 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 exceeds its basepotential, Q15 is turned on to activate Q16 and Q17 and ground the signal. A few seconds later, the base potential of Q15 rises to turn off Q15 along with Q16 and e1Z. 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 charge of 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 SPEAKE R SWITCHES
Fig. 5-2
DC Voltageprotectioncircuit
TOPOWER MP A
tr,r2
c o n s to n t
Fig. 5-3
PowerON/OFF mutingcircuit
rN (+)l r
2 r Nl ( - )
I
r8 tN2(+) t7 rN2(-)
fi I
GND
6 8 MUTING
9
VEE
to O U TI
ta
.J
t6 GN
I
OUT 2
F i s . 5 - 4 E q u i v a l e ncti r c u i to f p o w e rl C
6. PACKING
Mark No. Part No. Doscription Side pad Operating instructions (English ) Loop antenna assembly T-type antenna Packing case
1. 2. 3.
4. 5.
AHA.335 AR8526 ATB{76 ADH.OOS AHE-107
a
T.EXPLODED IEW AND PARTS LIST V
NO?ES: o Parts without part number cannot be supplied. o The S marh found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identicol designotion. o For your Parts Stoch Control, the fast mouing items are indicated with the morhs t* ond *. *T GENERALLY MOWS TASTER THAN ). This classification shall be adjusted by each distributor because it depends on model number, temperaturc, humidity, e tc.
Mark
No.
Part No.
Description
lVlark
No.
Part No.
Decriptions 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. 8. 9. 10. 11. 12. 13. 14.
ANE410 BBZ30P080FZK ATT-944 PMZ30PO60FMC AADO8
Bonnet Screw(3 x 8) Powertransformer{120V} Screw(3 x 6l knob Speaker
50. 5 1. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. 66. 67. 68. 69.
VMZ30P06OFMC Screw(3x6) Nut NK9OFUC AAB-317 K n o b B { B A S ST R E B L E , , BALANCE} NKT0FUC Nut AAAO84 Tuningknob A48-316 ANM-293 AAD07 AAD06 ASG-541 AAD05 AEC-784 AXA-373 AEC471 MTZ3OPIOOFZK AEK-123 AKP-039 ADG-073 GWM-265 AKN-045 SUJSLYXSF ACGO17 BBT30P080FZK K n o bA ( V O L U M E ) Front panelassembly Functionknob B (PHONO, F M ,A M ) Functionknob A (TAPE. LOUDNESS} (POWER) Pushswitch Powerknob bumper Cabinet Tuningshaft Nylon rivet Screw(3 x 1O) Fuse(T2.5A) AC socket Ac power cord Complexassembly Phone Jack(PHONES) switch Speaker (0.01 Ceramic ) Screw(3 x 8)
A
**
ts. 16. 17. 18. 19. 20.
a A A
**
z't. 22. 23. 24. 25, 26. 27. 24.
** A
I
J
A
1
/dt"'
2
3
t-'-'
/r"t"
2z\
2
B
@
\--.
a
<(
t e @
h
@
\
Sr
C
7 - \
N
\
8l?'v ,6rff
\@
@@
h<;
K
\lg
EA
l-F
\gw@ AYZ+'-'
t l
"JFi /F/
D
i
l2
1
2
I
3
4
A
{
2
)\
l-J-\
B
C
S-d::)
#
6
D
I
2
External Appearances Transistorsand lC's of
I
I
3
8. P.C. BOARDS CONNECTION IAGRAM D
2SA 726S
2SC1923
TYPe No Type No
A
Lot No
COMPLEXAss'y GWM 2
Q3 02 Q4 01
hFE
h:e
-
2SK34
2SC461
.., *.-ffi
No rvor No--ffi,,...-Lot rvPe*-uh^" '""]fi!rvpeNo
B
2SD 880 2SD 313
2SA1115 zSC2603
Lot
."m*
4[["
JA1Ol JC501
sTK4171-2S
,rO"*"-ffiNo
n"-1ffi-Lot
C
:u\
M51533L
2SK 246
M5218P NJM4558D x
D
Type No
IDss
ru#
1 2
.jj44
LED Ass'y
3
4
5
6
( Ass'y GWM 265
Q4 0r Q6 05 Q9 q8 Q7 QrO
o16 oil
Ql7
SPEAKERA
:: #iE;
l:. q q : : . i : ' . ' : ! e " r -t ,. .. . ! i e : 6 ? , , ' : ' a ! ' . i
,6.'ff$
.;::::: li ora
'lf
, 6
. :S;
, ::
+-tfi
I
I
ti'J' q ,* ":
g Czlze{T S
i : 4 i 6 q S l 6
i
:;
i
ClSr U
I
I
a 6i;!
: ::r qll ?i
'-
I
{ ' | .o:: jlrlt rqi ia iq ;i :lin: ::::: : el, " -
.;.;:
i l ' . ' r i g r; * i l i l ; gY i fl @ 8r ;rr: I '\.i?u J " r . , .:ry :.#f,l:i
; "; :;" r _ ,;:r:*p | , = ; . " - l . F $ ' I;rgI; l l '
t| " ?| . ' T t" il l l l " It t
*.4 b l,:{* Eq"-ffi. **"**
.7 ":*2rolro t F ", ^ .r , . ? dp+ro {
ct'a& 3
+++ttL{
,*"'i'i1#..,"ffi
i:: : J'sc tztzs I
rffi;i
""'rXof,i" 3t 1z Jc$ol r
er 2 S A9 9 2 250880
JAIOl ' : l - - : . , , . ' :
t t
* " cl5? E
-o.
M51533L M 5 2 1 8P sTK417r-2S
A2 04 08 D9
8cR6A W'l-,67s .,L. ,.s;DIS--:,.. z-rX}.Bt-"'- .'"",8O.' sz- 02 K z L 1 4 P . ' 3 , ' l : : l :, ' l R8402', I
$ . +' ; ,
f l
d
I tJ u3.
F r r 2- aSOt
dffi1,'""
i t ':*$ r l
t $ p
4
5
6
7
B
I
NOTE: The indicated semiconductors are representatiue ones only. Other olternatiue semiconductors may be used and are listed in the parts list.
HEADPHONE JACK Ass'y
c50l 0 . 0 t/ A c t 2 5 ACG-0t7
Sl0l : PoWER A S G -5 4 |
ACf20V 60Hz
SWITCHED r 0 0 w M A X.
UNSTTITCHED r00w MAX.
-$t'
'',;j:
s
d;i rP boi
j "
I'lT.-T.TF*
.R-r4a- c.ll.o cr28 RlL0.
- t
ff
I
Ptls i
T,:$.gs* J'g
aEL-405 L-tfip oz
B
POINTERAss'y
7
B
I
1
g . S C H E M A T I CD I A G R A M
C o M P L E XA s s ' Y ( 1 / 3 )
2
GwM-265
3
1r--i
|
[
*,. r,
-l1l1)-Iq IlgLr-q!'.|g
-^^^
-1tB---o4
FM IF AMP ------.1
I
i
i-1: s'et
_
I I -c2I ea {oot1 )47of hwr
7
I
| .. o.o'
'_
3oo:jAl
: " 1
Lz5o
UNBAL
L nro
I r-r,
+ +
c2a to/5 c33 .22/25
R45 6.8 r
I
R50 330
c2( o.0
R43 1 5I
o.o22 T ,r7
c38
Cl52
r-
L3
lmH
+
T zzc 7r'
Q7. I AM FRONT c36
=c3o I lzop 1 ,r7
R4l r.5k
ini ih*Ii
L - - - J
l1'*
c39 oo4T
\?2,38*
FM FRONT ENO
(3/3)
,/25 +
qe
iFe , )I
F M L
I R55 c42 r 47k o.ol I 7 v )
A M I F AMP
Il5o'vl PLAY [TAPE
,:;1?" DrzDr6 !59
f
-
Rr83 REC
471 GND
Q II
POWER
AMP
MUTING 4 5 6 7 A
Vee 9
--{ F rOOp Rr23
cil3
3
PHONO
I-r.s;tl
-
r-*'" ,o[
L *o,
A T E - O 5 8 A T B - O 8 5 A T B - O 8 4 ATF -O8 3 ATF. O84 a c r - t 6 2 acT - 602 RHBSAVS5O2
2SC461 Q1,2,7,9 25K246 Q4 J C5 0 1 Q 5 , 6 , r 3 , 1 6, 1 7 25A99? Q8 2SD88O Q12 Q14,r5 JArOl
Q3 qro qf I
M51533L M 5 2 rI P sTK4171-25
o1,3,12,17,18 rN4l48 D2 WZ-O75 D4 2-1K261
D8 D9 Dil
KZL140 R8402 wz - 130
0t3.14 0r5 016
10E2FO BCR6AM-4 SZ-O27
1_
J
1
2
3
4
ct? o. | /5o
5
6
NOTE: The indicated semiconductors are representatiue ones only. Other alternative semiconductors may be used and are listed in the parfs llsf.
fi^, ,,
L
r---l
1. RESISTORS:
i
f ndicated M:Ma,
in a,%W,'/eW,t5i6
tolerance
unless otherwise (Ml: t2O%
noted
k : ko,
(F) : r1%, (G): t2%, (K) : t10%
tolerance
2. CAPACITORS: Indicated Indication in capacity without (ltF)/voltage voltage is (V) unless otherwise except electrolytic noted p : pF
50V
capacitor.
3, VOLTAGE.
Q3 FM IF/ DETA MPX
CURRENT: voltage at ( 40 W + 4O W 8o)output (lkHz] (V) at no input
[_-l f_]
'signal
, DC voltage Value in (
signal power.
) is DC voltage at ratd
4. OTHERS: rf: @ The Signal route. : Adjusting mark of the point. found safety on some component parts indicates when the im-
I portance
factor
of the part. designation.
Therefore,
replacing,
be zure to use parts of identical
c2l o.22/50
This
is the
basic schematic
diagram,
but
the
actual
circuit
may
vary
due to improvements
in design.
LED Ass'y
f--^-*--]- 4 O 6 D5 AEL I
; D6 AEL-4O7
| |
SWITCHES: COMPLEXA s s ' y s r - 1 : F U N C T I O N ( P H ON O ) s l - 2 : FUNCTION ( FM ) s 1 - 3 : FUNCTION ( AM ) s r - 4 : TAPE MONITOR s r - 5 : L O U D N ES S
SWITCH Ass'y S2-1 S2-2 : : SPEAKERS (A) SPEAKERS (B) ON ON OFF OFF ON ON _ ON _ ON _ ON OFF OFF OFF OFF OFF
| *@--'
L--tl"rr
:
- -J
POINTER Ass'y D7 AEL-4O5 I
l
' _
-"a-l I
\ _ v ( o t A LP o | l { T E R ' J
OUTSIDE OF PC BOARD SIOI : POWER OFF
The underlined
indicates the switch
position.
Qt3,l4 PROTECTOR
[
,,o,
V:r 9
"f
SWITCHEO roow HAx UNSWITCHO roow MAx
Rt7 7 r50
Rr79 r80
;r32 20Op R144
4.7k
COMPLEX Ass'y ( 2/3 )
- - - - _ -
r34 i600p
lLr40 1402 l-r 30
0,t3,14 D l5 D16
1C-E?FO BCR6AM - 4 SZ-O27
-J
l
4
5
6
161
1 0 . E L E C T R I C A LP A R T S L I S T
NO?ES: o When ordering resisfons,first conuert resistancewlues into code form as shown in the following exomples. Ex. 1 l4rhenthere are 2 effectiue digits (any digit apart from O), such aa 560 ohm and 47k ohm (toleranceis shown by J = 5V",and K - IOVo). 560{1 56xLOt 561 .. .. RD%PS @|mJ H 47ha 47x10' 473.. . . R D T I PE D A I E ! / S 0.5{2 0R5.. RN2H EEK O tn olo . . asrPo0cK
-
Ex. 2 l4then there are 3 effective digits (such as in high precision metal film recistors). 5.62ha 562 x 100 5621. . . . AN%SR E6Emr' c The b, marh found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use ports of identical designation. c For your Parts Stoch Control, the fast mouing items are indicated with the marks ** and *** GENERALLY MOVES FASTER THAN *. This classificotion shall be adjusted by each distributor because it depends on model number , temperature, humidity, etc.
Miscellaneous PartsList
P . C .B O A R D A S S E M B L I E S
Mark Part No.
Part No.
Symbol & Description
Symbol & Dercription
Complex assembly Headphone lack assembly LED assembly Pointer assembly Switch assembly
C E A1 O 1 M5 L 3 CEA 21M OL 2 1 C E A4 7 1 6 L M CEANL 2R2M 50 coMA122K 0 5 coMA 562K50 coMA 153K50 coMA 333K50 coMA 242J50 coMA 822J50 coMLA 124K50 cosA 182J50 cosA 5t 1J50 ccDuJ o50c 50 ccDsL 270J50 c c D s L1 2 1 J 0 5 ccDsLt0lJ 50 ccDsL 221J 50 ccDcH 150J 50 ccDcH 220J50
cl50 cl47, C160 c143 c 1 0 1 ,c l 0 2 c l 3 1 .C 1 3 2 c 1 5 ,C 1 3 3 C 1 3 4 , c19,C20 c127,C128 cl07, c108 c109.c110 c 1 2 9 ,C l 3 0 cl8 c34
GWM.265
OTHERS
I\lark Part No. Symbol & Description
A A A A A A
* ** **
ATT-944 ASG-541 ACG{17 AEK-'|23 ADGO73 AKP.O39
T 10 1 Powertransformer(120Vl s 1 0 1 Pushswitch(POWERI (0.01/AC125V) c501 Ceramic
F U l O 1 Fuse(T2.5A)
AC power cord AC socket
c7 c125, C126 c30
c 1 1 3 . 1 1 4C 1 1 7C l 1 8 C , , cl03, c104 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 , C c 1 4 4 , C 1 5 2C 1 5 6 , l 5 7 , c39, C141 C142 , c41 (0.01 50V) Cl48 ceramic /1
(GWM-265) Complex Assembly
CAPACITORS
Mark P.rt No.
Symbol & Dercription
ACH-252 C E A 1 0 1 Ms O L CEA R22M sOL C E AO R l M s O L CEA R47M sOL C E A O l O Ms O L CEA lOOMsOL CEA 22OM 25L C E A4 7 O Ml O L C E A4 7 O M2 5 L C E A 1 0 1 M2 5 L
(470OI5OV) Cl 45,C146Electrolytic c139 c11, C21 C22 , c12 c10 c 1 4 , C 1 7 , C 2 7 , C 1 1 1 ,C 1 1 2 , c123,C' t24 c16, C2a, C31, C38, C119, c 1 2 0 ,c 1 3 8 ,C l 5 4 ,C 1 5 5C 1 6 1 , c33,C121, 122 C c26,Cl05,Cl06 c 1 3 5 ,C 1 3 6 C 1 3 7 C 1 5 1C 1 5 3 , , , c9, c37,Cl40
CKDYF 032 0 1 5 CKDYF 223250 CKDYX473M25 CKDYB 222K50 ACG{19
-
RESISTORS
Note: When ordering resistors, conuert the resistance value into code form, and then rewrite the part no. as before.
Part No. SYmbol & Doscription
COILSAND TRANSFORMERS
Mark Part No.
Symbol & Description
Ll, L2 AF chokecoil L3 Micro inductor T1 T2 T3 FM detector transformer AM antennacoil AM oscillator coil
Mark
ATH{53 ATH.O58 ATEO58 ATB-085 ATB{84
* * *
ACT-162 ACT02 RHBSAVS5O2 ACN-1 1 3 ACN-140 trOO RD'I/4PMFL OOD RD':4PM
VRl VR2 VB3 R166 R187
Volume (250k) (100kx2,1Ml Volumeassembly (Skl Semi-fixed
A A A
D RD1/8PM otrJ
Wire-wound ATFO83 lO.22x2,2Wl Carboncomposition ATF{84 l2.2M,1l2wl R 1 2 , 8 1 5 5 - R 1 5 9R 1 7 3 , R 3 5 , 8 3 6 , R l 1 5 , R l 1 6 , R 1 4 7 - R 1 5 4OTHERS , R 1 6 0 - R 1 6 5 ,8 1 6 7 , R 1 6 8 .R 1 7 2 , R 1 7 4 , Mark Part No. R175, 180 R Other resistors ** ASG-412
F 1 , F 2 F M c e r a m i cf i l t e r F3 AM ceramicf ilter
Symbol & Dercription
Sl P u s hs w i t c h (FUNCTION,TAPE,
SEMICONDUCTORS
Mark Part No.
Symbol & Doscriptaon o1, 02, 07, 09 ol 1
AWB.O44 AKX{73 AEC-940 PBZ30ZP060FMC ABA-271
LOUDNESS} FM Frontnd Complex terminal R ivet
** ** **
2SC461 (25C1 9231 sTK4171-2S M51533L-B M 5 2 1 8P (NJM4558DX) 2SK246 (25K34) 25D880 (2SD313) 2S4992 (25A7265) JC501 (2SC2603) JA101 (2SA11151 1N 4 1 4 8 ( u s 10 3 5 1 ( 152076) (1S1sssl
Screw(3 x 6l Screw
o3
010
Headphone JackAssembly
Mark Part No. Symbol & Dercription Phonejack (PHONES) R176-R179
o4 412 o8 05, 06, 013, 016, 017 0 1 4 ,0 1 5
**
*t
AKN{45 ODtrJ RDY4PM
A** A**
LED Assembly
Mark Part No. Symbol & Description
D l , D 3 ,D 1 2 , D 1 7 , D 1 8
* *
AEL-406 AEL-407
D5 D6
( R e dS T E R E O ) (Green UNING) T
PointerAssembly
D9 D 1 3 ,D l 4 D15 D4 D8 Dl6 Dl1 D2
Mark Part No. Symbol & Dscription D7 (Red) Pointer
A * A * A *
* * * *
RB4O2 1O E 2 F D BCR64M4 2-1K261 KZL140 s2{27 wz-130 (MZ-1301 w2475 (MZ-075)
*
AEL-405 A A F . l1 8
Switch Assembly
Mark Part No. Symbol & D$cription
**
SUJSLYXSF
52
Push switch(SPEAKERS)
11 . D I A L C O R D S 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. Tie one end of the cord to the stud A located inside the tuning drum. 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 drum 1 time, and finally tie it to the spring hook F so that it is tensioned. 9. Tum the tuning shaft, and check that the cord moves smoothly. 10. Cut off any excesscord. 11. T\rm 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
O nvr II
Dial pointer
Dial pointer
I U
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 assemblyand the ground. o In principle, no adjustment should be made on FM tracking. (Seepage 21, if necessary.) o Set the FM switch to ON and connect terminal no. 6 to the ground.
Step FM SG {400H2, t75kHz deviation} Frequency Lcvcl 98MHz 66d8 46dB Position of dial pointor Adiustmant point
Adiustmont procodure
Set the output of the REC OUT terminal to the maximum value. Set the SIGNAL meter to the maximum value Adiust the output of the REC OUT terminal distortion to the minimum level.
'|
2. 3.
4.
98MHz 98MHz 98MHz
t l
98MHz
98MHz
T6
T1
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 .
5.
98MHz I OOae Not modulated
98MHz
VR3
Set the signal of the terminal no. 4 to 76kHz (t200Hz)
6.
98MHz 66dB r S t e r e o m odulation
98MHz
T6 (within
tgOo )
Minimize the distortion of the REC OUT terminal signal
NOTE:
Connect the MPX SG to the FM SG external modulator terminal and set the mod.ulation of Main (lhHz, L+R) !67.5hH2 deuiation, Pilot (19kHz) !7.1kHz deuiation.
Ad.justment
points in brackets are for SX-303L (Low Wave) only.
Fig. 1 1-1
Adjustmentpoints
20
FM tracking
Step FM SG (tl00Hz, r?SkHz doviationl Frequenqy 1 Level Posation of dial pointer Adiustmoni poant Adiustmont procodure
TC7
106MHz
2.
1odB
l O6MHz
TC5 TC6
Set the SIGNAL meter to the maximum value.
3.
4.
Confirm that the dial pointer does not ger out of position at 106MHz and 98MHz.
NOTE:(ForSX-303L/HEZ)
. When 87.6MHz can not be receiued with this unit, adjust the oscillator (TC7) and then it can be receiued. It is prohibited to receiue 87.2MHz or below and so after hauing ad,justed the oscillator, mahe eure that it does not receive 87.2MHz or below.
AM TunerSection o Checkthat the dial pointer indicates startingpoint. a o Tum ON the MW switch. o Connectthe SIGNAL meter betweenthe terminalno. 1 of complexassembly the gxound. and
Step AM SG (400H2, 30% modulataonl Frequency 1 13 9 5 k H z I Lwel 100dB 10 0 d B Position of dial pointer 13 9 5 k H z Adlustment point Adjustment procedure
TC3
Set the SIGNAL meter to the maximum value.
I J
2.
J.
603kHz
603kHz
Set the AM SG to 30dB output level,repeatsteps I to 2 above.
4.
1395kHz 603kHz
3 0 d B l r g g s r H z l r c c
3 0 d B l e O a t H z i - t 2
Set the SIGNAL meterto the maximum value.
5.
o.
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 .
LongWave Section(SX-303L/HE, HEZ only) o Set the AM BAND switch to the LW position.
Setp AM SG (40OHz, 30% modulationl Frequency
1
Level
Position of dial pointor
Adlustmsnt point TC2
Adjustment procedure
254kHz 16 4 k H z
100dB
10 0 d B
254kHz
'l64kH z
2. 3.
4.
5.
Set the SIGNAL meter to the maximum value.
I J
Set the AM SG to 30dB output level,repeatsteps1 to 2 above. 254kHz
50dB 50dB
254kHz 16 4 k H z
TCI Set the SIGNAL meter to the maximum value
16 4 k H z
T4
6.
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
12. REGLAGE
Section Tuner MF o V6rifier que I'aiguille du cadran indique un point de d6part. o Brancher le mesureur de signal sur la borne no 1 et la masse du montage de I'ensemble. o En principe, aucun r6glage ne devrait 6tre fait sur I'accord MF (Voir page 23 si n6cessaire). r Positionner le commutateur de MF sur ON et raccorder la borne no 6 i la masse du montage.
FM SG (4O0Hz, ddviationrT5kHzl Fr6q"on"o--l---N ir"""
98MHz 98MHz 98MHz Position de l'aiguille Point de 169lago
Etape
Proc6dure de r5glage
I
66dB
46dB
98MHz 98MHz 98MHz
T1 T6
T1
Positionner la sortie sur la borne de REC OUT d la valeur maximum. P o s i t i o n n e rl e m e s u r e u r d e s i g n a l d l a v a l e u r m a x i m u m . R d g l e rl a s o r t i e d e l a b o r n e R E C O U T a u n i v e a um i n i m u m de distorsion.
2.
3.
4.
66dB
D6connecter la borne no 6 de la masse du montage.
5.
98MHz
I
oooa
Non moduli 98MHz 66dB r Stdr6o de m o d u l a t i o n
98MHz
VR3 T6 (en tre t90')
Positionner le signal de la borne no 4 d 76kHz (t2OOHz).
6.
98MHz
Abaisser la distorsion du signal sur la borne REC OUT.
* REMAROUE: Brancher le MPX SG sur la bome du modulateurextdrieur du MF SG et rdglerl"amodulation surle fil principal ( thHz, L+R) !67,5hH2 de ddviation, sur le Pilote (19kHz) t7,ShHz de ddviation.
_ rc4 ics i@-trsl
Les points de rigl.age entre parenth4ses ne concernent que b SX-303L (ond.e infCrieure).
Fig. 11-1
Pointsde r6glage
A C C O R DM F
Etape FM SG (40OHz, d6viation tT5kHzl Fr6quance 1 Niveau Position de l'aiguille Point d r69lage Proc6dure de r6glage
TC7
1O6MHz
2. 3
4
1odB
1O6MHz
TC5 TC6
Positionner le mesureur de signal sur la valeur maximum.
V d r i f i e r q u e l ' a i g u i l l e d u c a d r a n n e c h a n g ep a s d e p o s i i i o n d l O 6 M H z n i i 9 8 M H z .
Section Tuner AM o V6rifier que I'aiguille du cadran indique un point de d6part. o Branche le commutateur de MW (PO) sur ON. o Branchbr le mesureur de signal entre la borne no 1 du r6cepteur et la masse.
Positionner le mesureur de signal d la valeur maximum.
P o s i t i o n n e rl e A M S G d u n n i v e a u d e s o r t i e d e 3 0 d 8 , r 6 p 6 t e r l e s p o s i t i o n s 1 e t 2 c i - d e s s u s ,
30dB
|
1395kHz
Positionner le mesureur de signal d la valeur maximum.
Positionnerle AM SG d un niveau de sortie de 30dB, rdpdter lespositions 1 et 2 ci-dessus.
Section Grandes Ondes(SX-303L/HE, HEZ unaquementl o Mettre le commutateurde gammed'ondessur LW (GO).
Etape AM SG (40OHz, modulation de 30%l Fr6quence 1 254kHz 164kHz Niveau Position de l'aiguille Point do 169lage Proc&ure de r6glage
| 00dB 100dB
254kHz
16 4 k H z
TC2
5r9nal
2.
J.
T5
P o s i t i o n n e rl e A M s G d u n n i v e a u d e s o r t i e d e 3 0 d 8 , r 6 p d t e r l e s p o s i t i o n s 1 e t 2 c i - d e s s u s . 254kHz 16 4 k H z
4.
50dB 50dB
254kHz
16 4 k H z
TCI Positionner le mesureur de signal d la valeur maximum,
5.
o
T4
R d p t e r l e s p o s i t i o n s4 e t 5 j u s q u ' i i a v o i r o b t e n u l e m a x i m u m d e s e n s i b i l i t 6 .
23
12. AJUSTE
Secci6ndel sintonizadorde FM o Comprobar que el indicador del cuadrante indica un punto de inicio. o Conectar el medidor de sefral(SIGNAL) entre el terminal no 1 del ensamblecomplejo y masa. o En principio, no deber6 efectuarse ningin ajuste en el seguimiento de FM. (Ver la p6gina 25 si es necesario). o Poner el selector de FM n ON y conectar el terminal no 6 a masa.
FM SG (4OOHz, r7skHz de dosriaci6nl Frectencia 1 98MHz 98MHz 98MHz Nivel Posici6n del indicador del cuadrlnte 98MHz 98MHz 98MHz Punto de aiusto T1
Paso
Procedimientos de aiusto
66dB
46dB
Aiustar la salida del terminal REC PUT al valor mSximo. A j u s t a re l m e d i d o r S I G N A L a l v a l o r m 5 x i m o . Ajustar la salida del terminal REC OUT con distorsi6n
al nivel minimo
2. 3.
4.
T6 T1
66dB
Desconectar el terminal no 6 de masa. 98MHz
5.
S i n modula r 98MHz 66dB r Est6reo de nodulaci6n
I
66dB
98MHz
VR3 T6 (dentrode t90')
A j u s t a r l a s e f i a ld e l t e r m i n a l n o 4 a 7 6 k H z ( t 2 0 O H z ) .
b-
98MHz
M i n i m i z a r l a d i s t o r s i 6 n d e l a s e f i a ld e l t e r m i n a l R E C O U T .
* NOTA:
Conectar eI generador de sefialesde multiplex (MPX SG) al terminal de modulador exterior del generador de sefiales FM de (FM SG) y ajustar la modulaci6n a Principal (IhHz. L+R) +67,51rH2 de desuiaci6n, Piloto (I9hHz) !7,5hHz de desuiaci6n.
(TC1)
TC7 T96
@ / (r4)-\@6
\ r z
lrc2l @lrsl @-rs
No.1 --No.4
Y
T1 Los puntos de ajuste entre pardntesrs son s6lo para el modelo SX-303L (onda larga).
@-vns
No.6-.-!
Fig. 11
Puntos ajuste de
24
Seguimiento FM de
Paso FM SG (4(XtHz, r75kHz de dawiaci6nl Frecuencia Nivel Posici6n del indicador del cuadrrnto Punto do aiusto
Prododamintosdo ajuste
TC7 2.
l06MHz
1odB
106MHz
TC6 TC6
Ajustar el medidor SIGNAL al valor mdximo
3.
4.
C o n f i r m a r q u e e l i n d i c a d o r d e l c u a d r a n t e n o s a l g ad e l m a r g e n d e 1 0 6 M H z y 9 8 M H z .
Secci6ndel sintonizadorde AM r comprobar que el indicador del cuadrante indique un punto de inicio. o Poner en ON el selector de MW. . Conectar el medidor SIGNAL entre el terminal no 1 del ensambledel sintonizador y masa.
AM SG (4OOHz, 30% de modulaci6n)
;;;;-
|
Procedimientos de aiuste
A j u s t a re l m e d i d o r S I G N A L a l v a l o r m d x i m o .
603kHz
I
T3
A . i u s t a re l g e n e r a d o rd e s e f r a l e s e A M ( A M S G ) a l n i v e l d e s a l i d a d e 3 0 d 8 , y r e p e t i r l o s p a s o s I v 2 d e a r r i b a . d
30dB
I
t395tHz
I
TC4
A j u s t a re l m e d i d o r S I G N A L a l v a l o r m 5 x i m o .
A i u s t a r e l g e n e r a d o rd e s e f i a l e s e A M ( A M S G ) a l n i v e l d e s a l i d a d e 3 0 d B , y r e p e t i r l o s p a s o s 1 y 2 d e a r r i b a d
Secci6n ondalarga(56loel SX-303LlHE,HEZ!. de o Ajustarel selectorAM BAND en la posici6nLW.
Paso AM SG ( fl)Hz, 3O% de modulaci6nl Frecuoncia 1 Nivel Posici6n del indicador del cuadrante Punto de Prododimiontos de ajurto
arusto
TC2
254kHz
16 4 k H z
2. 3.
4.
Ajustar el medidor SIGNAL al valor mdximo.
T5
i A j u s t a r e l g e n e rr d o r d e s e f i a l e s e A M { A M S G } a l n v e l d e s a l i d a d e 3 0 d 8 , y r e p e t i r l o s p a s o s 1 y 2 d e a r r i b a . d 254kHz 16 4 k H z
50dB 50dB
254kHz 16 4 k H z
TCI Ajustar el medidor SIGNAL al valor mdximo.
5. 6.
T4
R e p e t i r l o s p a s o s4 y 5 h a s t a l o g r a r s el a s e n s i b i l i d a dm d x i m a .
P5
2
9 . S C H E M A T I CD I A G R A M
3
Ql,?
f
3OO_O E^L
: " 1
t 75O UNAAL
L o"o
T
c23
t
"-Tt fr1 tb ,,
h
{L
';'* E;l: I i r . - r+ . - -
l
--{-f ;-l-_. d r-::s i+gF l
@
L__-_
FM FRONT l2/
Qt5-17 POWER ON/OF MUTING c160 22o/to Dt1 ot6 i;6
FM R
r TA PE
l,5Nl PLAY
L "r"
c r 5 7! #cr4o o 022 T ;T,@/ I I 25 f r f i
I '] orl |
-'-
REc T TAPE
L ".o"
,3r
ct2s : c 33 | 56OOp
cr34
56OOp
roor I -F c 30
ae
vR2.2 BASS Ql,2,7,9 "5C461
VR2 3 ' TRALE
25K246 Q4 Q5,6,r3,15,17 JC5O1 Qa 254992 2SO88O Qi2 Q14,r5 JA10r
q3 qto Qt1
M51533L M5218 P s T K 4 1 7 1' 2 S
o 1,3,12,\7.14 rN4t4A D2 WZ-O75 04 2-1K261
Da 09 0ll
KZL140 R8402 WZ-130
Dt 3 . 1 4 1 0 E 2 F O D15 BCR6AM'4 015 5Z-O27
J
1
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.
L BESISTOBSI Indicatd in o, y.W, fsw, t 5% rolerance unte$ orherwi* notd k : k! M , M(J, (F) : ,1%, (c) : !2%, (K) . 10% (M); i20% roterance 2 CAPACITOBS Indicated in capacty t! F)/voltase (V) untes, othetuise nord p r pF Indiotion wnhout votr.ge is 5OV ex.ept eterotyri. cap.ciror.
--l-t
Q3 FM IF / DEI A MP'X
3 VOLTAGE,CUFRENT: volraqe l ( 40 W + 40 W a 8lroutpur (lkHz) E:sisnal DC vot4e (V) at no input sisnai E Value in I I h DC volrageat rard power 4. OTHEFSI @ : Adju$ins point. The A maA tound on some componenr pans indicar* the im podance ot the sfety taclor of rhe pa(. Theretore, when reptacins, be lre to u* parrs oi idenlica designaiion. This is the basic $hematic diagram, bul rhe ftrudr o.cu{ d!e to rmprovements in design may vary
LED Ass'y
l-;;^..;-l
; D6 aEL-4O7 | swrTcHEs: COMPLEX Sl-1 51-2: s1-3: SI-4 SI-5 : I : Ass'y FUNCTION (PHONO) F U N C T I O N( F M ) F U N C T I O N( A M ) TAPE MONITOR LOUDNESS
oN -
qE!
oN - 9ir oN - lfqi
ON OFF
POINTER Ass y i D7 AEL-4O5 a l i
?-;;-l 5 \
I
52-1: S2-2 :
S P E A K E R S( A ) SPEA(ER5 (B)
ON
_
oN - lri
OFF
v POTNTER {orAL )!l
OUTSIDE OF PC BOARO s101 : POWER
oN - lrl
indicates the switch Dosiiion
The undedird
o1314 , PRO T E C O R T COMPLEX A!6'y
(3/3)
A slol
o I r ,- -, -r-r-r - e r a a--
A 0 6- O ? !
A
SVITCXED O{SWITCHED roow f,ar roow f,ax
PHONES
,o A Rr57
L.--^*:i
ti'irl14l
COIVPLEXAssy ( 2/3 J
""1i." j 1,."
!140 to? -130
o13.r4 lOE2FO DI5 BCR6AM-4 015 5Z-O27
-J
4
5
6
'"