SECTION 1

SEFIVICE MANUAL

TABLE OF CONTENTS

I . T E C H N I C A L D A T A . . . . . . . . . . . . . . 2 ,I I . D I S M A N T L I N G O F U N I T . . . , , . . . . . 4Í I I . C O N T R O L S . . . . . . . . . . 5I V . P R I N C I P A L P Á R T S I O C A T I O N S . . . . . . . . . . . . . . . 5V . V À R A C T O R T U N E R A N D P R E S E T T U N I N G S Y S T E M . . . . . . . . . . . . . . . . , . , . 6

l . V A R A C T O R T U N E R . . . . . . . . . . . . . . . . . . . . . ó2 . P R E S E T T U N I N G S Y S T E M . . , . , . - . , . . , . , . - , 9

V I . T U N E R A D J U S T M E N T . . . . . . . . . . . . I 0I . F M S E C T I O N A D J U S T M E N T . . . . , . . . . . . . . I 02 . L W S E C T I O N A D J U S T M E N T . . , . , . , , . . , 1 23 . M W S E C T I O N A D J U S T M E N T . . . . . . . . . . . . . I 3

VII . MAIN AMP ADJUSTMENT ,. . . . , . , . , , . , . . . . . . . 14VIII. TUNING CORD THREADING .. . , . , . , . . . . . . . . . . I5I X . C L A S S I F I C A T I O N O F V A R Í O U S P . C B O A R D . . . . . . . . . . . . . . . 1 6

I. RELATION OF P,C BOARD TITLE AND IDENT]FICATION NUMBER . . . , , . , . , . , , , , . , . I ó2 . C O M P O S I T I O N O F V A R I O U S P . C B O A R D . . . . . . _ . . . . . . . . _ 1 7

FoÍ baÍc adjusimênrs, ne.suring nerhoG, 6d operari.g prin.iptes, reter to CENEÍ|ÀL OPERÁTING PRINCIPLES AND

ADJUSTMENTS.

I. TECHNICAL DATA

PoWER AMPLIFIER SECTION

CONTINUOUS POWER OUTPUT2{HÁNNELS DRIVEN 14 Watts per chdnel, nininun RMS, at 8 ohms from 40 to 20,000 Hzwilh no

more thm 0-8% lotal tamonic distoilio..

POWER BANDWIDTH OHF)SIGNAL TO NOISE RATIO OHF)

RESIDUÀLNOISE

CHÀNNEL SEPÀRATION íHF)

l5 Hz to40 tHzl8 ohns. dislortion withiÍ 0.8%

PHONO

AUX

SPEAKERSHEADPHONE

PHONO Betler rhan50 dB at 1,000 HzLes rhán 0.8 nV al 8 onns

More than 30 (l kHz.8 ohmt

A, B (4 to 16 ohmt/Á+B (8 ro 16 ohm9

PIN: 150 nV/100 k óhnsDIN: l0 nv/180 k ohms

P I N : 1 5 0 ó V / l 0 0 k o h n sDIN: 150 mv/r00 k ohms30 Hz lo 15 kgz ll dBl0 Hz lo ?0 kHz +0 dB, 2 dB

+10 dB at 100 Hz, +5 dB at 10 kHz(Volume conbol setal -30d8 position)

INPUT SENSIÏVITY/IMPEDANCE

PHONO

AUX

TAPE MONITOR

DAMPINC FACTOR

ottrPuT

PRE ÁMPLIFIER SECTION

OTITPUT I'EVEL/IMPEDANCE

TONE CONTROL

LOT'DNESS CINTROL

FREQUENCY RANCE

SENSITIVITY OHF)CAPTURE RATIO

SELECTIVITY (IHF)

IMÀGE REJECTION

IF RE.'ECTION

SPURIOUS REJECTION

AM STJPPRESSION

SIGNAL TO NOISE RATIO

HÁRMONIC DISTORTION

TT'NING INDICATOR

STEREO SEPARATION

SUBCARRIER SUPPRESSION

ANTENNA INPUT IMPEDANCE

88 MHz ro 108 MHz

1.5 dB

TAPE REC

FREQT'ENCY RESPONSE PIIONO (RIAA)

TUNER/AUX/'TAPE MONITOR

BASSTREBLE

More rhan 5 t dB (98 MHz)

More than 70 dB (98 MÈz)Móre than ?0 dB (98 MHz)

50 dB60dB

MONO

STEREO

Le$ thàn 0,3% i 100% nodtlation)

Les ihan 0,6% (1009', modulÁ1ion)

C€nter Turiq meter a FMore than 40 dB (l tHz)

300 ohns balanced, ?5 ohms unbabnced

FM TUNER SECTTON

AM TUNER SECTION

FREQUENCY RANGE

SENSITIVITY (IHF)

SELECTIVITY OHF)

SICNAL TO NOISE RATIO

IMAGE REJECTION

IF REJECTION

SEMI{ONDUCTORSPOWER REQUIRDMENTS

DIMENSIONS

520 kHz 10 1 ,605 kgz150 kHz to 350 kHz '200 Àrv/n (tEr anl€nna) 20liv (ext. antêntu)300 lrv/h (bar antenna) 30llv {ext. antÈnM)

MW: More than 30 dBLW: More than 30 tlB

More than 55 dB (l MHz)More tho 35 dB (240 ktlz)

MW: Moie than 45 dB,Lwr More thd 50dB

TÍaÍníors: 27, Diodes: 25, FET!: 2,CSÁ, ULa.d LA hodelsr l20V,60HzCEE nodeh: 220V, 50 HzOlher nodels: 110/220l240V, 50/60 Hz swilchable440(w) x l2s(H) x 26s(D)nm (17.3 x 4.9 x r0.4")

WETGHT 6.2 ke ( l I T lb t

' Forimprovem€nl purposes, specilications and d€sisn are snbj.ct tóchanse{nhost nolic€,

DISMANTL ING OF UNIT

In case of lrouble, e1c. necessilaring disassembly. pleáse

disassemble in the order show. in pholos.aphs. Reassemble

scREws

scREws

. . - : .

| = = = = = = a l= i l Ê E E ë l

a iË . - iÊE=E . - . - .a l" t

I I I . CONTROLS

-n r= FIl

VOLI]ME

IV. PRINCIPAL PARTS LOCATION

Fis. 1 Controls

[.lr "t4. - l f .

r--Eïl Ê . ' Il9g!)

**."" Enn6U

Fig.2 Top View

V,R PC EOARDaÁ-5t57

IC FC EOARDAÁ-5r56

TOUC|I SW|ÍCHPC BOARo ÁA-5r58

Fig.6 Block Dias.am

t :

L

t - -

3) Acrual Operation

Fig. 5 is a cÍcuit diagram of the high fr€qu€ncyamplifier stase only of a circuit which is actuallyused. Condenser Cl and varactor diode Dl inthe diagram are equivalent to the variable con,denser of an ordinary FM fÍont end. As can beunderstood from Fig. 3, Dl varies the capacitancein a 4 to 16 PF ranSe by means oí inverse biasvoltage. This capacitance and condenser Clcombined caFcitance forÍns the Íesonance circuitwith coil LA. Consequently, it is satisfactoryif at low.esonance íÍ€quency, the voltage suppliedto the varactoÍ diode d€clines, and at hid re-sonanc€ frequency, the voltage supplied to th€varactor diod€ increas€s. This voltage variationmethod with variabl€ resistor, êtc., op€ratesin the sam€ way as a regulaÍ variable cordenser.

FiE.7

This method uses a local oscillator circuit andfrequency mixer circuit, and bias voltage is appliedto the varactor diode for starioo selection and iscalled a varactor tuneÍ. Pleas€ r€fer to the scheÍ,a-tic diagran foi actuai circuit drawing.

I IV

\/. \'ARACTOR TUNERAND PRESET TUNING SYSTEM

I. VARACTOR TUNER

A varactor tuner is th€ luner system in which varáctordiode junction capacitance is varied by means of theinverse bias value applied to the diode for stationselection. By employing a varactor diode. tuningwhich is same a! ordinary vaÍiable condenseÍ s),stemcán bê mad€ without using a variable condenser bychanging control voltage only.

l) Featuresa) When used in an FM tuner, th€ front end can

be made small€r than \{hen compaÍed with avariable condenser.

b) Station selector butaon positioning is notlimited.

c) Slation sel€ction by remote control is possible.d) Ideal voltage can be set for a certain reception

frequency beforehand, and preset tuning canb€ efect€d by successively switching the

e) If control voltsg€ sweep is at ideal speed,automatic tuning (seàÍch tuning) is posible-

0 Pow€r consumption is about the same as avariable condenseÍ system.

ïf,g

q

Fig. 3

Fig. 4 Tuning circuit employing a vaÍactor diode

Fig. 5 Example ofHigh Frequency

Amplifier Stage Cncuit

+ INVERSE VOLTÀCE

2) VaÍactor Diode CharacteristicsAs foÍ varactor diode characteristics, as shownin Frg. 3, cápacitance c r( changed by chm8e ininverse voltage VR. Further, ifthis varactor diodeis used jn a tuning circuit, the following conditions

Cmax + CD

Cmin + CD

Cmai, Cmin arc th€ maximum and minimumvalues of varactor diode capacitánce change. CDis the sum of stray capacitance and trinmercapacitance. K is over l_5 b€cause FM broadcastfrequency range is 88 to t08 MHa Fig.s 4(a)and 4(b) show the actual usage method.

I

iti!È! ruMre

\ . t t i i' i i lt I

t r i

Fig. 8

lcr lJPclo09cTERMTNAL@@@@

TO VÀRIABLE CAPACITOR

Fig. 9

2. PRESET TUNING SYSTEMl) Preset Station Selecrion

For preset íatio. selection, there is a mechanicaland an eleclrical merhod. These are memoryequipme.t and seiection equipment enablingdesÍed station s€lection beforehand and selectingthes€ pre-set srations by simply d€pressing therespective switches.An ordinary car redio, etc. utilizes a mechanicalstation selection system wherein mechanicalvariation is by mea.s of a variable condenser orposilioning ofa dust corc inside a coil.Model AA,1010L utilizes an electrical srálionselection system and employs the varacror tunerexplained in a previous item.

2) An example of a stllion selection system employ"ing a varactor tuner is shown in Fig. 6. For skrionselection, push switches are used for s€lecuonof voltage supply to the varactor tun€r. However,in the AA.10I0L, these station selection pushswitches are puÍe electronic system sensi.touch

3) Sensi-touch Employed Preset Station SelectionSystem OperationThe circult shown in Fig. 7 is th€ conlrol voltagegenêratinS pres€l volume and sensi-touch circuir.Fig. 8 sho'rrs the inside of circuit sensi-touch ICFPCI009C which include the 4 channel circuitry.Terminals 14 thÍou8h 17 are the input teminals;. e r m i n a l s @ , @ , @ , - a @ a r ê t h e s t a t i o nselection output terminals; and terminals O ,@ , @ , and O are rhe pilot outpul terminals.When channêl I sensor electrode is louched,voltage is snpplied to the IC as rhe input signalthrough fmger (body) resistance at t€rminal @ .Then, the impedance is lowered at IC stationselector output terminal @ and current flowsai shown by the arrow marks in Fig. 9. Consequ-enlly, because the supply voltage 10 the varactorruner diode is changed by the dividing ratio ofRb and Rc, station selection is possible bym€ans of setting the pr€set volumes beforehandaccoÍdrng to the deri Íed broadcarl t Íequen.res.

tVI- TUNER ADJUSTMENT

IIIJLTI FUNCTIOI{ PC BOARD AA-5I59À

" @

@

@

Ë E@ a D

o

@. @ .o.

FM IUNING METER ÀOJ (LO*ER CORE)FM OISTORTION ÁDJ (I]PPEN CONEI

aà.o;

K-lt :J

rkHÍr I Ei " t rca

@. @"TP.o

FREOUENCY ÀOJ

i:ió'" Á0

€Ío lH: tró",,1"R?".1-,

7 { A ^\<9r

p"@.@ "op@ @ @*@oo

ro rà aà(à

@ o @ ( s )à EÈ 5 .À,.À.n

a Ë

Fic. l0 Multi Function P.C Board AÀ-515941. FM SECTION ADJUSTMENT (RefeÍ to Fig. l0)

IF CoilIF Cóil

Tune oÍly noise withour

inlerfereÍce of hroadcasls.

2

3108 MHz,ó0 dB (mono) input,Lers than 0.3% distoition

t 0

I f Tunins M€ler iÍdicalion

is nol al @ler posilion,

rep€tl íeps 2 a.d 3 above.

108 MHz,60 dB(moÍo) input.

EÍor: within !250 kgz.

108 MHz, L6s than l2 dB

vR3,5 tB88 MHz, ó0 dB (nono) inpul.

Eror: WÍhin 1250 kHz.

888 Mttz, Les ihan 12dB

9

98 MHz. Less than 12 dB

EÍor: Within 1250 kHz.

l 0

v R l , I k B

19.00 kHzConnect Frequency Counter

l l

98 MHz.60 dB Gt€reó) input.When ihe Í€r€o i.dicatorràils to light, this mans thalbroadcast n nol beins Íeceiv€d

t 2vR2, I kB

40 dB

98 MHz,60 dB G1€r€o) l€ftchannel inpul. DistortionFaclor ruí be less than

0.6%.

t l40 dB

98 MHz,60 dB Glereo)

Distortion factor musl be

NOTE I.

NOTE 2.NOTE 3.

Chart I

ln the event that the distortion facrors in Steps 8 and 9 are not tess than 3%, re-adjust FroÍt End TrimÍn€.Condensers TCR.nd TCA to obtain a miniÍnum average dislortion factor at 88,98, and 108 MHz (san€distortion factor at all thÍee Doints).PLL IC Free Running Frequenry Ínust be an exact 19.00 kHz.Ifthe distortion factor is not less than 0.ó%, tuÍn IF Coil in Step I wjthin 1/2 turn rnd adjusr.

VII- MAIN AMP ADJUSTMENT

i-*i i-*i'ÍxI' '[[ro. @

.(a7

Á @

. @

" @

-CF+:C.o3 @

m Q€ ? l I

" l l

p p/z=\ n.= _ En!* (( "," )) =*H@v

mP{JSH swrrcH Pr soaRD aÀ-5l55 @. Ul

Fig. 12 Main Anp P.C BoaÍd AA'5106

ldling Cuíent Adjultment (RefeÍ to Fig. l2)

l� Remove Power Fuses F2 2A (left channel) and F32A Gight channel) and connect an aÍuneter to

2. At non.signal input, adj$t Senifixed ResistonVR4 3008 o€ft channel) aíd VR4b 3008 (Íiehtchannel) to obtain a 20 mA idling cuÍÍent.

VIII . TUNING GORD THRTADING

!EsX E ;

:EE

F€

ë

tgz

15

I

IX. CLASSIFICATION OF VARIOUS P.C BOARD

I. RELATION OF P.C BOARD TITLE AND IDENTIFICATION NUMBER

P.C Board Number ofP.C Board

MFC P.C Board À4.5159À

Main Amp P.C Board AA-5106

Touch Switch P.C Board A A 5 1 5 8

Volume P.C Board A A - 5 1 5 7

IC P.C Board A Á . 5 1 5 6

Push Switch P.C BoaÍd AA-5155

LED P.C Board AA-5159C

Chart 4

2. COMPOSITION OF VARIOUS P.C BOARD

I) MFC P.C BOARD AA.5I59A & JUMPER P.C BOARD AA.5'59B

." . '" t- ^"r 1.1o.) t�

- r , _ -

! Á s o & O j ! É

- l

cti

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-

r t r " - . r - , ,o ï

IL n -

6).

ÀÁ - 5,6r 4,G).:

o r

@ @ Fnn

2) I tÀrN AMPP.C EOARD AAslOó

@ 0 9 e @ 9

II

3i TOUCH SWITCH P,C BOARD AA.5I58

,1) VOLUME P.C BOARD AA-5t57

5) IC P.C BOARD AA.5156

a a - 5 1 5 8

an-s os@

M E T E R { + )

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ó) PUSH SWITCH P,C BOARD AA-5I55 & LED P,C BOARD AA-5T59C

9 P

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2.3 .

HOW TO USE THIS PARTS LIST

This parts lÈt is compiled by various indMdual blocks based on assembly processWh€n ord€riog paÍs, please describe paÍts number, serial numb€I, and model nunber in delail.How to read list.

The Íef€r€nce numbeÍ corresponds with illustration oÍ photo number of thal paíicularpaÍts list.

This numbeÍ coÍÍesponds wilh .he Figul€ Number.This numb€r corÍesponds with the individual parts index numbeÍ

A small "x" indicates the inability to show that particulaÍ paí

in tl€ Photo or lllustration.Schematic Diagram NumbeÍ of individual

(not requn€d foÍ parts ordet-Quantity of paniculár part requjred.It

in ttut figure.

FLFvI|EEL BLocK #llr2- l I sx 3oo42s Flyvneel Blo.k asy.conp. RDorr312 lló 244so6 Flywheel Onlyl 2 - r r ?x 244754 F .h , F l ywhe . l

Mlin M.r,l C$er2 - l r 9 2s3030 M . i n M . t . l

4. The synbol numb€rs shown on the P-C. Board list can be matched w h the Conposite Viewsofcompon€nts cfthe Sch€matic Diagram or Service Manual.

5. Please utilize sepaíàte "Common List for Senice Parts" for Resistor parts orders.6. The shape ofthe parts and paÍts name, etc. can be confirmed by compa.ing them ivith the paÍs

shown on the Electrical Parts Table ofP.C. Board.7. Both the kind of part and installation position can be determined by the Parts Number. To

determine wh€re a parts numbeÍ is listed, utilize Pans Index at end of Pans List.It is necessary first of all to find th€ PaÍts Number. This can be accomplished by using theReference Number listed at right of parts number in the Parts Index. (meani.g of ref. no.outlined in Item 3 above).

8. Utilize separate "Price List fo. PaÍs" to det€rmine unit price- The mosl simple method offinding parts Price is to utilte the ref€r€nce number.

CAUTIONT l .

2.

When placing an order for paÍs, be su.e to list the paÍs no. model no., anddescÍiption. There aÍe instances in which ifany ofthis informaiion is omitted,paÍts cannot be shipped or the wÍong parts will be delivered.

Please be cáreful nol to make a mistak€ in the pads no. Ifthe paÍsno.isi.eÍror, a part different trom the one ordered may be delivered.

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Parts No. Note

EO645838 OSC Coil RWR41497A

EO650373 AM-IF Trans. RLC41543A 468 kHz Same as AA-1010

EOó50384 AMIF Trans. CFU-085-D 468 kHz

ES24035s Rotary SW. SR26N l-3-5 30KC

Ê,s240287 Rotary SW. SR26N 30 KC

8S240096 Push Sw. 3FT-0001FF2120

85240276 Pushsw. 5FT-0001DF3620

EV24U34 Double axial 2 thÍow Vol(FR) DJ80D 250 kBx2

8V240445 Single aixal 2 throw Vol. CM70R 20 kcx2

8YL299 ts Pre-set Vol. (w/knob) LFQDRS04 I00 kB

8V499364 Semifixed Vol. V10K8-4-2 5kB $me as AA-1010

8V484863 Semifixed Vol. V10K84.2 I kB

E2655t8'�7 5P Àntenna Têrminal Plate

s8607t38 Push Knob C A5-5022

sK6468 t 7 Single Knob AA.5250

sK644670 Double Knob (Upp€D ÀA-s3ss Same asAA-1010

sK645208 Double Knob (Lowet AÁ-s3s3

sK646828 Tuning Knob (Snall ) AÁ-5252

s2645243 CirculaÍ Foot A CA.60l4

TA240300 VaractorTuner VFT-22MH-21

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INDEX

2-T3

F R s s 2 7 r 2 l R 2 4 , 2 5

SECTION 3

SCHEMAÏIG DIAGIFIAMAA,IOlOL CONNECTION DIAGRAMAA.'OIOL MFC SCHDMAïTC DIAGRAM

AA,IOIOL MAIN AMP.SCHEMATIC DIAGRAM

AA-IOIOL VARACTOR TUNERSCHEMATIC DIAGRAM

l �2 .3.

P"*N. 5;lilïftR e r \ ^ & - . . F r Í \ n . a R e r N n &i . - . . : D r L N L '

: P r b l \ " .s l m b . r \ 4 , - " s y m b a r \ , .Ref No . &

Pd ís No . s r mb4 t Nn

36

TP rr t--_ ll R E c | @- _ - ll A u x I O

_ li PHoNo I o- T

I

I- ' - ---- . - . ---- ll P 8 I @

.--- - - - ._ lL i E r l O_ - - - ll a u x l @

.--_-_-------_lI PHoNo I @

MULÏI FUNCTION PC BOARD

a a - 5 t 0 5

I/ó-è\(F--@)\ag/

- rI DTSTANCE I- L

- - TI L 0 c a L l- L

A M

_ - l

II9O2 PRESET TUNIN6

I voLUMEP.C BOARD AA-5157

PUSH SWIÏCH PC BOARD

! l-TÀtrE Mo-nlro-Rl foFF-l (J ttÍ l @l -

I s ïL l -5 rr lilopÊ i LqtEEqo I Cl i-iloF-dll s w * -I rrnriï-FE<IL faF" ló m"*l _

l C . | . , J P C 1 0 0 9 C l C . 2 ! P c 1 0 0 9 c

t MANUA r l

TOUCH SWITCHtFM:ll tFM-tPC BOARD AA-srso

lTil3 tFM:4 I l-Frí-s l or-I P R E S E T ï u N r N G I

s E L

LOUDNESS

L . C H

souRcE

MAINE

SOURC E

R . C H

LOUDNE SS

+ lzv

+ 4 8 V

6 N D

AMP PC BOADA C

A A - 5 1 0 6 AG N O

T 9 0 l

f ^^ - 'o-,ot-o I

LAMP

II

l - - - - - i r g o r 2 A 2 3 o v

= lt o o v A R E I

F 9 0 t t l 2 6 0 v

200v ^REA

F 9 0 2 . ? t O 3 2 ^ 2 ó O V

P i 0 Í E c ï t 0 t

s w

s w 9 0 |S P Ê A K E R SO F F ( P O W E R )

OFFB

A + B

o o o

@ o @8 1 9 0 1 - c

UNLESS OTHERWISE SPECIFIEDaLL RES|SToRS tN oHMS t /4 tv (J )ALL CAPACITORS lN r rF 50WV (J )POWER TRANSFORMER IS DIFFERENTACCORDING TO AREA

l sFaÀr (ERi lL R

+ -

tsPiliER-ftl

S P E A K E R O U T

AA-t0t0LCONNECTION DIAGRAM

No.4-r 1540214A

llc orEilFal

I N D 9 0 l - 9 0 3

S E VT 9 0 1

f. l";;-t| Á Á - r 0 r 0 Í - 7l,!Eo -E

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IOTEt. rrf{LEss on€RwtsE gEctFt€D

aLL RES|SIORS tr{ OIS t,//rw(JtALL CÀPAC|ÍORS ti !F Sorví,r)

2.IÍARK IiIOICAÍES LOT LEAI(AG€CAPACIÍORS

AA-IOIOL MFCSCHEMATIC DIAGRAM

No.4-2 15402154

9

co

I

T R 6 l o T R 82 S 0 3 r 3 { E ) ( F )

il-r\ l

:i

ÈF

e

I U N L E S S O T H E R W I S E S P E C I F I E DaLL RES|SÍoRS rN oHMS r/4 "V (J )A L L C A P A C I Í O R S I N I F s O W V ( J )

2 ÍR6 ANDTRT LOCAÍEO ON HEAT SINK ELOCK

ln trlr R wI t [ t f l l/ l \ , f l \E C B i r v

zsc t222 2s8505

AA-IOIOL MAIN AMPSCHEMATIC DIAGRAM

No, 4-3 15402164

UI{LESS OTHERIVI SE SPECIFI EDALL RESISTORS IN OHMS I, /4 W (J )A L L C A P A C I Í o R S l N / F 5 0 W V ( J )ÍR6 ANDTRT LOCATED ON HEAT SINI( ELOCK

AA-IOIOL MAIN AMPSCHEMATIC DIAGRAM

No,4-3 l5402l64

R

----t

r F r I---t I

,l--i-óJ l b ! Yr t+ íó--- i T

IF OUÍnHs

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AA-IOIOL VARACTORÍUNERSCHEMATIC DIAGRAM no,+-r l54O2l7A