(DrrloNeerl'
The Art of Entertainnrent

t--=:::-----t l _ 4 1

ORDER O. N

| 6'r---:-rl

A RP 2 I 3 4
F M / A MD I G I T A L Y N T H E S I Z E R N E R TU S

FIZS|4L F-294

: VERSIONS MODELF-294L, F-294,F-2570t andF-2570HAVEFOLLOWING

Appliceblc modcl

Typc F-294t ZEB F-Z9l

Powcr rcquircmcnt

Dcstination

F-2570t

F-ZEt0
(DC powcrsupply) (DC powcrsupply) (DC powcrsupply)
Europcan continnt and United Kingdom Germany Gencral rnarket Europcan continent Italy

ZEVVXlB ZIXlB

(DC powersupply) (DC powcrsupply)
a This manual is applicable the F-Z9[L|ZEB and F-Z94|ZEWZ types. to o As to the other types, refer to applicable servicemanuals. o F-294L and F-25701 cover MW/IW bandswhile F-294 and F-2570 cover MW. o These productsare componentsof systems.As to the systemcomposition,refer to the system manuals. o Each of these products does not function properlywhen independent to avoid malfunctions,be sure to ;
connect it to the prescribed systemcomponents, otherwisedamagemay result.
o Ce manuel pour le sevicecomprendles explications r6glageon franeais. de a Este manual de serviciotrata del m6todo ajuste escrito en espaFol.
PIONEER ELECTRONIC CORPORATION
1-chome, rokyo Japan 4-1, Mesuro Mesuro-ku, 153,
90801 U.S.A. PIONEERELECTRONICS SERVICElNC. P.O.Box 1760,Long Beach,California OntarioL3R 8E3 Canada PIONEER ELECTRONICS CANADA,lNC. 505 CochraneDrive,Markham, OF 1,2740 Beveren,Belgium PIONEER ELECTRONIC IEUROPEIN.V. Keetberglaan Victoria3195,Australia TEL: [03] 580-9911 AUSTRALIAPTY.LTD. 178j184BoundaryRoad,Braeside, PfONEEBELECTRONICS
1990 CORPORATION ELECTRONIC O PIONEER
F X D E C.9 0P r i n t e dn J a p a n i

CONTENTS

. A I. S P E C t F t C A T t O N S.6.2 D J U S T M E N T S '. '. '. '. '. '. '. 2. E X P L O D E OI E W SP A C K I N G N D V. A. 3 PARTS |ST L. 6 3.ScHEMATtC TAGRAM D 6. REGLAGE
. 4. P. C ,B O A R D O N N E C T I OD I A G R A M S. C N 5.P.C.B' SPARTSLt5T.'.'.'.'.'.'.'.13

1. SPEC|F|CATTONS

FM Tuner Section
Frequency range. 87.5 MH2to lOS MHz Usabf Sensitivity.-. e Mono: 12.8 d9f, IHF 11.2pV17 A) 5 Sensitivity Mono S/N 26 dB: 1 avl{DlN). StereoS/N 46 dB: 35 pVl75 0. Signal-to-Noise Ratio (lHF, 85 dBt Input) Mono: 77 dB S i g n a l - t o - N oRs e i o D l N ) -. -.o.n o.:d B i at { M. Stereo:60 dB Distortion..Stereo:0.5%{lkHz) A n t e n n an p u t. I.O u n b a l a n c e d

MW {AM} Tuner Section

Frequency Range (lHF,Loopantenna) Sensitivity Antenna.,.,.,.,.,,.,. 531 kHz to 1,602kHz.. 350 FVlm , ,. ,. ,. ,. ,.L o o pA n t e n n a ,

LW Tuner Section

Frequency range. (lHF,Loopantenna) Sensitivity An1enna.,.,.,,.,.,.,,.,.-. 153 kHz ro 281 kHz. 1500 pvlm ,. ,. ,. ,. , ,L o o pA n t e n n a.
Miscllaneous Dimensions.0 ( W )x ( H )x 6 ( D )m m ( t W e i g h t w i t h o up a c k a g e ) -.2.2 k g.

FumishedParts

F M A n t e n n.a. AM Loop ntenna. A. - 1.. 1
. Specifications and design subject to possible modification without notice due to imprcvement.
V 2. E X P L O D E D I E W S , P A C K I N G N D P A R T SL I S T A
NOTES:. Parts without part nutnber cannot be supplied,. Parts marked.bg " (D" are not always kept in stock. Their d.elioery lime may be longer lhan usual or theg mag be unaaailable. o The A mark found on some cotnponent parts ind,icates lhe importance of lhe safety laclor of the part. Therefore, uhen replacing, be sure to use parts ol id,entical d,esignation.
PARTSLISTOF EXTERIOR AND PACKING
Marl ilo. & Description
1. 2. 3. ,I. 5. CORDWITH PLUG CHASSTS RUBEER SHEET WASHER PCB MOULD Parl ilo. ADE1102 AE81r11 AED1112
SCREW 7. scREw 3x 18 8. SCREW 18 3X WASHER 10. SCREW 11. L2. 13. L1. 15. LEGASSEMELY FRONTPANEL DISPLAYPLATE GOLDEN BUTTON STATION BUTTON
ABA-298 ABA1O18 ABAllOO ABE-053 BP226POsOFMC AEC1m3 AMB1739 AAK2O82 AAD1682 AAD1892

WAKEUP BUTTON

t7. BONNET 18. FM ANTENNA

LOOP ANTENNA ASSEMELY

20. srDE PAD(L) 21. 22. 23. 24.
AAD1893 ANEI285 ADH1OOs AT81006 AHA1312
AHA1313 AHD1995 AWZ3196 AWZ3199
SIDE PAD(R) PACKINC CASE PACKING SHEET MAIN ASSEMBLY DISPLAY ASSEMBLY
EARTH PLATE(F-294 /ZEWZor.l,r)

ffi\ "-iV

3. SCHEMATICIAGRAM D

" f

" '" I -""" l

t - "l - "

ffil313rEi,

1OOOP ZE||Z

.TV.FM "AM

QIO4,11O5 DC AMP

tcl!ot

c1101 tc1102 tc1103

I Lte?001 : LA: AN747OP
I RN12O3 o1001 ! 2SC266a 01103 ! 2SK: 2SC1740SLN 01105 :RN220l 01104-1110.RN- 2 o - , 1.2SC245a 7 | 2SA1O6
0i oo1 Dl 002 D100i,1112-1117, 1119,1121 0111a,1120 L1104 F1002 F1103 F 4 F1105
:1SV156 ! RD7.sESB : Hssl 04-02 : 1SSas : ATE-O79 :ATF-107 ATF*I 19 : ATF-:ATF-2Oa 41F1042 3ATF1 Sg 0 ZEB ZEWZ ZEB ZEWZ
T1103 T 4 v R v R x1101 x1102 TCl 101 C111O,1116 C1114,1140,1166 C1142 D1162
:AXXlOl2 ZEB AXXIOl4 ZEWZ :AXX1O13 : ACPI 042 : ACPl 043 ! ASSi O42 : A T F 7 : ACt\,|-Ol a :ACG1O21 :ACGIO22 :ACG1O16 :ACE1O39
,:l1"" t"'- J *:,r; *:""r r

{ N ) = = 8 a c 9 :

s : F F $ i l F i l F * H F F $ F F; " " f
F PPi P*. * E T f tF F ; i

rclol MlcRo coMPUTER

sl01-120, 12 t - 8. 0

:1SGlO34

l,RESISTORS : lndicated 6-n, t1+W,1/6W and L/gW, +S% tolcrancc unless otherwise noted k; kO, M; MO, (F) ; +l%, (G); +2%, (K); +ro%, (M); +2O% tolcrancc. 2.CAPACITORS : Indicated capacity(pF)/voltagc(V) unless in othcrwise noted p; pF. Indeicationwithout voltagc is 50V exccpt electrolytic capacitor. 3,VOLTAGE, CURRENT: ; DC voltage(V) at no input signal. L] Value in ( ) is DC voltage at rated powcr. mA ; DC currentat no input signal. I mVl ; Signalvoltagcat FM 400H2-f75HzDEV.
, P D A 9 z E BD 1 O 1 - 4. PD4328A ZEB 106"P D 9 ] A Z E W ZD 5.2SC2458 : R N i2 O 3 x10l c ct 07 : HSSl 04-02
. ASSI Oi 8 :ACH1037 :ACG1020
4. O T H E R S: * ; Signal route. @ ; Adjusting point Thc A mark found on sorrc component parts indicatcs the inportance of thc safcty factor of the part. Therefore, whcn rcplacing, bc sure to usc parts of identical dcsignation. X markcd capacitors and resistorshave parts numbcrs. #; D1 and R1 through R7 are uscd with PD4328A9 only. This is the basic schernatic diagram, but the actual circuit may vary duc to improvcmcnts in design.

4. P. C. B O A R D O N N E C T I OD I A G R A M S C N

TUNER AIN ASS'Y M

r-r.,rq]

rgLrql

TO DECK

t-" 6

FE MOOULE SS'Y A (AXOOO2For ZEB t y p s ) I (AXOIOO4 For ZEWZ t y p )
rh. dFds cnh.r hnr.d whho rh. diod. r.mhrr F!*.d w rh 6) {
T U N E RO I S P L A Y A S S ' Y ( A W Z 3 I 9 ) 9

q".,.e

-Yo -,o

(o0. E i 'i

C M KI 4 O S X
-R''5 o o-,.,, o o","6 d",,0 "o,

o o 6 o. o o o. o o.

o o o o a a a a a a a. a o

r+ll$I i *

ERMAIN ASS'Y
(AW23196 or ZEB tvDe) F ( A W 7 o r Z E W Zl v p e ) F

!.r:,-wz

xs0t ) 11l

oll17 ot1l4 olll5

.",;""

. elt{

a ; l P o ! 6 o. t

:Or tl tV.1"

o|ll6 tcl l0J o 12
ot113 Qllll vRl I 02 T C r1 \Rt t03 vRl I 04

o1001 tcl t02 zEa

/*tda4^
o o ot 105 or 103 ol 104 ot l9 o t1 t o

A N P I 4 5C B

tcl lol

- -.'5) -o-

l i e r o o - o

EAF:E!

lclo1 or02

.'rl,;,;

This P.C.B. connectiondiagram is viewed{rom the foil side.
(eovt 83\ rol aelESWA) (eqVt \W3\ roq TefE\WA)

Y'AAA ilIAI/ F

a lo c o lt c l s to ellto lto so I Itv t oI t c r 0tIw |o I tnv

looto s 0 l t 3|

* ;%.:;t;:s, {
ef-l.ti"lr : :y.1:l'1]. &",:"3::3."" P-r : ir" ":. l'"e Ili,r.,:,.,:"A""":::r'. fil: 1",;,'Y:t. $::*:,::." i*-.3-;I " ir. ; I'" "d"; ffit";"" "" o-o o _,.ro.--.*-" ,"- '"rcD; r" +"i*":-5'.:l:1fT-jffiA*.#l 'e I"4E' f i t.d.

'fffi,s[*#ff

' 'k" ;': " ":"" ;-]:lJ"* * o,l:u)::"S-6 il ' "' ?.'.
.lr;- = ,:"i,ffir tF I iirill;.l',,,'
cfi,.-r{.ax i:*:3';,,,,,;i:;::S,a: T '' r @' " oriS4gl'luj li[ :l
H' ,| "fl:&:*,1,0u|"gr".-
u.G ,"=:'.}:-. " x?;r n:Tl-:/T il:'ii ' _
:" ;f[c4gX{":"":
-*,tf '.1,8"=A:;--1 ,1-.< "."fr:# x". d"'b ".TIT * F

eo o eolro

!olto a0l l0 eot to 0l o tot tf,l

o* ' T

l - '. i I 6 J l

@/-2 [ _ L

l Hlr.__. @

t l.iru*i

eMAfaAto 140lTf,lt/tl/tof, ofAo8.f,.q.$

Y' EEA ViI AM R3I4UT

qMA )Cfo 0T
Y'aaA 3JUOOM 3i ( egyt A3S tol SOOIOXA) ( eqyt \W3S rof $OOIOXA)
( e e 1 \ w A )' ? e AY A J q AI O R 3 t 4 U T Y
5. P. C. B ' S A R T SL I S T P
NOTES: o Parts uithout part nurnbercannol be supplied. o Parts rnarked " A " are not alwags bg kepl in stock. Their d,eliaery time may be longerthan usualor theymag be
o o unaoailable. The A mark found on sotne cotntr,onent perts ind,icates the irnportance ol the safety factor of the part. Therefore, when replocing, be sure to use parts ol id.enl,icald.esignation. When ord,ering resistors, first conoert resistance aalues into code form as shown in the following eramples. Er1 When there are 2 elfecthte digits (ang d.igit apart frorn 0), such os 560 ohm and, 4 ohm (tolerance is s h o w nb y J : 5%, and K: lO%).
.RD1/.ipsFlFl[-l.t 560e 56x 10' 561 '.'.. noi/.tpsT7llslt x 103 47s. 47k!t 17.:.'. o.se lRi noen@l@Ek 1e o1o notr@ffix
When there are I eflectioe digits (such as in high precision metal film resistors)

5.6pke562x 1ot s6z1

notyasn@@@@r

P.rt l{o.

ccMcH150Js0 cEAS330M16 cKDYF223250 ACG1022 cEAS470M10 ACG1016 cKDYF223250 CEAS4RTMSO cEAS470M10 cKcYF473Z50 cKcYB222K50 CEAS2R2M50 cEA5010M50 ccDsL2?1J50 CEASORlM50 cKDYF2232s0 cEAS330M16 cKDYF2232s0 CEANP2R2MsO cKcYF4732s0 ACE1039 CEAS3R3MsO CEASlRSM50 CEASR22M5O ACC1022 cEA5010M50 cKcYB122K50 cEAS470M10 cEASlqlM25 cKDYF103Z50 cEAS101M50

Symbol Description &

Pa.t ilo.

Symbol& Dercription

c1123,C1124 CERAMIC CAPACITOR c1136 ELECTR.CAPACITOR c1137-CI139 CERAMIC CAPACITOR c11lo cAPACITOR(0.022pF) c1141 ELECTR. CAPACITOR
(AW23196) MAtNASS' Y oTUNER

RESISTORS

ALL RESISTORS

RD1/sPMfmJ

VlO1 x101 FL IUAE MV1O7O RESONATOR(4.19MH2) ASS1018

6. ADJUSTMENTS

O As to connections and points to be adjusted, refer to Fig. 6-1 and Fig. 6-2. O Where and asterisk(*) is given for "level dBpr," set to the level (dBp) at which the voltage is roughly half the voltage between TP1104 and GND at 60dB.
6. 1 A M T U N E RA D J U S T M E N T
O Set the BAND selector to '(AM",

Stcp ilo.

AM SG(feOHz, 30olo modslrtion) Adjurtmcnt Titlc
Frcqucncy(lHr) Icvcl(dBp)
Rcccption Frcqucncy Dirolrv
Adiuctment Spccificetionr Adjust so that the DC voltagc bctwccn TP11O4 and GND is maximum. Adjust so that lights up. thc indicator
Tracking adjustment (ZEWZ typc only)

1395 Rcpcatland2abovc

Adjurtmcnt Location MW blockANT coil 603kHz (T1103) 1395kHz TC1101 999kHz
TUNED indicator scnsitivitv adiustmcnt

55-t-5

vR1104

A 6.2 FM TUNER DJUSTMENT

O Set the BAND selector to "FM". O Perform VCO adjustment two minutes or more after turning the power ON. Note : Stereo modulation : Main lkHz L t R+68.25H2 dev. Pilot l9kHzt

Stcp No.

6.75kHz dev. Adiurtment

FM SG(trHztT5lHr dcv.)

Adjortmcot Titlc Frequcncy( ll Hz) !cvcl(dBp)
Rcccption Frcqocncy Dirohv
Adjuctmcnt Locrtion Adjust
Spccificetionr so that thc DC voltage
Detector coil T-mctcr adjustmcnt
98.0 (No modulation) 98.0 (No modulation)

98.0 (No modulation)

98.0MHz
between TP1101 and TP1l02 is-F 50mV.

VCO adjustment

vR1102 vR1103
Adjust so that the frcqucncy bctwccnTP1105and GND is 76t 0.5kHz
Adjust so that the indicator lights uP.
TUNED indicator scnsitivityadjustmcnt

6. REGLAGE

. Les raccordements les points de rdglages et sont reprdsentds la Fig. 6-l et Fig. 6-2. i o Lorsqu'un astdrisqueaccompagneun "niveau dBp", rdgler i un niveau (dBl) tel que la tension soit i peu prds la moitid de cellequi estpr6sente entre TP1104et GND pour 60 dB.

Nota: Modulaci6n estereo: P ncipal l kHz L + R t68.25H2 deu gkHz :t 6.75kHzdev Pilote 1 FM SG llkHz:t 75kHzdsv.) N". de paso Items de ajuste Frequencia (MHz) 98,0 (Sinmodulaci6n) 98,0 {Sinmoduiaci6ni 98.0 (Non mudulation) Nivel ldBr) Frecuencimetro oe de recepci6n 98.0MHz Aiust6 Lugar de ajuste 11104 Esoecificaciones Ajutt. d. 'nancraquc l. tcn5i6{ dc CC.ntrc TP1101y TP1102 5.a d. A50mV. Ajlstc da manaraqua la frqucnci. cntrc TP1105y GND sla dc 76 t 0.5kHz.
Ajnstclo dc form. quc los indicadorcs dc TUNED cornicnccn a ancandaras,
Ajustedel medidorT de la bobinadetectora

Aiustevco

vR1102
Nivcl dc iluminaci6n de TUNED.

vR1103

AM antenna terminal
terminal R (Ell83) L, Output

FM 75 A anlenna torminal

wiringdiagram Fig,6-1AM and FM adjustment

Borne AM d'antenne

Borne de sortie L, R (

Voltmalre CA

Borne d'antonne FM de 75 ohmios
AM et FM Fig.6-1 Diagramme cdblage r6glage de de
Terminal la de antenade AM
Terminal salidaL, R (ll de
Terminal de la antena de FM de 75 ohmios
I l-.,".","1

I r'ecuencia I

Fig.6-1 Diagramma conexi6n ajuste AM y FM de de de
*1 : OnlyZEWZtype les Seuls type ZEWZ 56lolostipo ZEWZ

TC110.tfl

FE assenbly

* Lgl 3l33u!oo,

T1101 TP1101

BLocx | MTu

TPl 102

TPr105

04 L11

*;,;*@

vRl 104

l$1(r2

,@ L cltr

TUNER MAIN ASS'Y

Fig.6-2Adjustmentpoints Fig.6-2 Pointsde 169lage Fig.6-2 Puntosde ajuste

7. FOR F-294/ZEWZ TYPE

NOTES :. Parts uithout part number cannot be supplied,. t Parts matked by ( O" are not always kept in stock. Their d,elioerytime may be longer than usual or they may be unatailable. o The A mark lound on sorne cornltonenl parts ind,icates the importance of the safety factor ol the part. Therefore, uhen replacing, be sure Io use parts of identical d,esignation.
F'ZC0IZEWZ type is the same the F-Z 94L as of sections. IZEBtypewith the exception the following
Mark Symbol Dcscription &
FM antenna FM antcnna asscmbly Packingcasc Front panel Main assembly
Part No. F-294L/ZEBlvpe F-794/LEWZ tvpc

Rema rks

i:::::

AHD1995 AMB1739 AWZ3196

ADHlOO2 AHD1994 AMB1738 AWZ3197

For packing

(AWz3l9z Main Aee embty ) The Main assembly(AWZ3l9?)is 6ameas the Main assembly(AWZ3l96)with exception the the the of

followingsections.

Mark Symbol Dcscription & Part No.

Q1110 Q1111,Q1112 Ql113

AWZ3196 RN2201 :::::

AWZ3197

Remarks

25C2458 1SV156

D1001 D , D , D , D H5S10402 D1118,D1120 15S85 t1001,11003 F1102 F1104 F1105 TC1101 c1001 c1002 c1003 cl011,c1013 c1012 c1136 c1137 c1138 c1159 c1160 c1167,C1168

LAUOlOM

:1::::v
LAU4TOK ATF-119 ATF1O42 ATF1088 ACM-018 cKDYF102Z50

ATF-107 ATF-208

cKDYF223Z50

:::::i:""

CKDYBlO2K5O ccDsL680J50 cKDYX473M25 ;;;;;;;,*, CEAS2R2M50 CKDYB392K5O
cEA5330M16 cKDYF223Z50 cKDYF223Z50

Symbol& Dcscription

Part No.

AWZ3196

cLr7L.C1L72 c1175 c1176

:::::i:'o'

cKDYF103Z50 RD1/8PM472J
R1001 R1002 R1003 R1007 R1139,R1142,R1143 R1140 R1141 Rl144 R1163 R1164 R1165 R1166 R1167 Rl174 R1183,R1184 R1192 Antenna tcrminal(PAL 4P) Antenna tcrminal(2P) FE modulc assembly(21) FE modulc asscmbly(4L) AM RF tuningblock( MW) AM RF tuningblock(LW)
:v::i:"* ::11:'.y'*' 1:t/::v'"'

RD1/8PM153J RD1/8PM560J

AWZ3197 cKcYB102K50

Rcmarks

RDl/8PM681J RD1/8PM104J RD1/8PM102J RD1/8PM392J RDl/8PM224J RD1/8PM473J RD1/8PM222J RD1/8PM122J RD1/8PM472J RD1/8PM473J RD1/8PM472J RD1/8PM472J
RD1/8PM913J RDl/8PM302J RD1/8PM103J AKAlOlO

AKA1O12

AXQlOO2 ;;;; AXX1O13

;;'* AXX1014

F 8. PANEL ACILITIES

REARPANELFACILITIES

O FM/AM ANTENNAterminals
you will not Antennas must be connected theseterminals: to otherwise be able to receivestations. See page 4 for details on ANTENNA CONNECTIONS.
cord @ rururn input/output
Connect to the TUNER jack of the cassette deck amplifier.

FRONTPANELFACILITIES

-.--*^-./,-

-----.

@ Displaysection
Shows current time, received frequency, contents of timer settings, etc.

@ ser button

Used for current time, timer playback, and timer recording setting.

99 l l

I rwEo

@ clocK ADJ button

Used for starting the clock adiustment.

frvf Ml lU lTtil ,AI

Itrff r ,Xl**",-{

Y.Il-l?trtr

{-, @ TUNTNG/TIMER + I buttons
lDuring tuningl Used for locating stations. " " " " Use button for lower, and + button for higher frequencies. [During time and timer settingl Used for adjusting the clock, timer settihgs and its related adjustments.

.El 'Ll El o.

lJ rrme
6) MoNo indicator Lights when the MPX button is set to ON. When this indicator is lit, FM stereo broadcasts are reproduced monaurally. @ TUNED indicaror Lights when a broadcast is received and tuned in well @ srEREo indicator Lights when an FM stereo broadcast is received (MPX button set to OFF}. @ LocAL indicaror Lights when the LOCAL button is set to ON. @ Timer indicators These show various timer settino. G) SLEEP indicator Indicates that the sleep timer is activated. @ Frequency display Shows received broadcast frequency. Also gives scrolling display of main function status. FM and MHz light: FM reception. AM and kHz light: MW or LW reception. @ Time display This shows the present time and during recording, it shows the elapsed recording time. When you listen to a broadcast, the STATION CALL number is displayed. O Deck REC TIME indicator Lights when deck is recording.

@ LocAL button

Use this if the broadcast signal is too strong, causing noise and distortion. The atttenuator reduces the strength of the signal, reducing noise and distortion.

@ MPX (FM MoNol button

Turn on when there is much noise during reception of FM stereo broadcasts. The reproduced sound will become monaural but noise will be reduced.

button @ nnennony

Used for memorizing stations. When the button is pressed, the frequency display will flash. To memorize the frequency of any station, press a station call button while the frequency display flashes.

@ BAND selectorbutton

Each time this button is pressed, FM, MW or LW reception is selected in order.

@cHEcK button

Used for confirming timer settings, after setting for timer playback or timer recording.

@ sleeP button

Sets the sleep timer. Each time you press this button, the setting changes as shown here. The current setting is shown on the tuner display. Power turns off when your set time has elapsed.

@srATIoN CALLbuttons

Used for memorizing and recalling memorized stations.

@ Timer selectorbuttons

1,21 IWAKE-UP Usedfor timer playbacksetting. TRECI setting. Usedfor timer recording I I I I '
90.+ (Approx. 90 minutes) (AUT
(Approx. 60 minutes) OFF.

30(Approx. 30 minutes)

lf you press the SLEEPbutton during recording, AUTO is displayed,and power is switched off at the end of recording.