This document provides specifications and service information for Pioneer stereo tuners models F-294L, F-294, F-2570L, and F-2570. It includes: 1. Specifications for the FM, MW, and LW tuner sections, including frequency ranges, sensitivities, signal-to-noise ratios, and dimensions. 2. Exploded views of the exterior parts and packing materials, along with a parts list. 3. A schematic diagram of the tuner circuitry showing components like transistors, capacitors, and resistors. 4. Diagrams of the printed circuit board connections for the main and display assemblies.

1. (DrrloNeerl' //!,The Art of Entertainnrent
-|.:#
t--=:::------
t l _ 4 1
| 6 'r---:-rl
j FM/AMDIGITALSYNTHESIZERTUNER
-
a
o
o
o
o
o
a
FIZS|4LF-294
This manualis applicableto the F-Z9[L|ZEB and F-Z94|ZEWZ types.
As to the other types,referto applicableservicemanuals.
F-294L and F-25701cover MW/IW bandswhile F-294 and F-2570coverMW.
Theseproductsare componentsof systems.As to the systemcomposition,refer to the systemmanuals.
Eachof these productsdoesnot function properlywhen independent; to avoid malfunctions,be sureto
connectit to the prescribedsystemcomponents,otherwisedamagemay result.
Ce manuelpour le sevicecomprendles explicationsde r6glageon franeais.
Este manualde serviciotrata del m6todo ajusteescritoen espaFol.
ORDERNO.
A RP 2 I 3 4
MODELF-294L,F-294,F-2570tandF-2570HAVEFOLLOWINGVERSIONS:
Typc
Appliceblc modcl
Powcr rcquircmcnt Dcstination
F-294t F-Z9l F-2570t F-ZEt0
ZEB X o X (DC powcrsupply) Europcancontin€nt and United Kingdom
zEwz X X (DC powcrsupply) Germany
z X X (DC powcrsupply) Gencral rnarket
ZEVVXlB o X o X (DC powersupply) Europcancontinent
ZIXlB X o X o (DC powcrsupply) Italy
PIONEER ELECTRONICCORPORATION 4-1,Mesuro1-chome,Mesuro-ku,rokyo153,Japan
PIONEERELECTRONICSSERVICElNC. P.O.Box 1760,LongBeach,California90801U.S.A.
PIONEERELECTRONICSOF CANADA,lNC. 505 CochraneDrive,Markham,OntarioL3R8E3Canada
PIONEERELECTRONICIEUROPEIN.V. Keetberglaan1,2740Beveren,Belgium
PfONEEBELECTRONICSAUSTRALIAPTY.LTD. 178j184BoundaryRoad,Braeside,Victoria3195,AustraliaTEL:[03] 580-9911
O PIONEERELECTRONICCORPORATION1990 FX DEC.1990Printedin Japan

2. CONTENTS
I.SPECtFtCATtONS .......................................2
2. EXPLODEOVIEWS.PACKINGAND
PARTSL|ST ...................... 3
3.ScHEMATtCDTAGRAM ................................. 6
4. P.C,BOARDCONNECTIONDIAGRAMS .........10
5.P.C.B' SPARTSLt5T ..'.'..'.'....'.'.........'......13
1. SPEC|F|CATTONS
FM TunerSection
Frequencyrange....... 87.5 MH2to lOSMHz
Usabfe Sensitivity.-................Mono:12.8 d9f, IHF11.2pV175 A)
Sensitivity{DlN)........ MonoS/N26 dB: 1 avl75 0
. StereoS/N 46 dB: 35 pVl75 0
Signal-to-NoiseRatio(lHF,85 dBt Input) Mono: 77 dB
Signal-to-NoiseRatio{DlN)-..........-........................Mono:66 dB
Stereo:60 dB
D i s t o r t i o n . . . . . . . . . . . . . . . . . . S t e r e o : 0 . 5 % { l k H z )
AntennaInput.......... ........75 O unbalanced
MW {AM} TunerSection
FrequencyRange ...... 531 kHzto 1,602kHz
Sensitivity(lHF,Loopantenna) ..... 350 FVlm
Antenna...,..,.,..,.,,.,. ,,.,.,.,.,.,LoopAntenna
LW TunerSection
Frequencyrange....... .-. 153 kHzro 281 kHz
Sensitivity(lHF,Loopantenna) ... 1500pvlm
An1enna..,.,.,,.,.,.,,.,. ,.,.,.,.,,.LoopAntenna
Misc€llaneous
Dimensions.............- 360 (W)x 68 (H)x 316 (D)mm
Weight(withoutpackage)..-..........................................2.2kg
FumishedParts
F MA n t e n n a. . . . . . . . . . . - . . . . . . . . . . . . . . . . . . . . . - . . . . . . .1
A M L o o pA n t e n n a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
. Specifications and design subject to possible modification without
notice due to imprcvement.
6 . A D J U S T M E N T S ' . . . . . . . ' . . . . ' . ' . . . . ' . ' . ' . . . . . . . . . . . . . . . . . 1 5
6. REGLAGE

3. 2. EXPLODEDVIEWS,PACKINGAND PARTSLIST
NOTES:
. Parts without part nutnber cannot be supplied,.
. Parts marked.bg " (D" are not alwayskept in stock. Their d.elioerylime may belonger 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 EXTERIORAND PACKING
Marl ilo. & Description Parl ilo.
ADE1102
AE81r11
AED1112
ABA-298
ABA1O18
ABAllOO
ABE-053
BP226POsOFMC
AEC1m3
AMB1739
AAK2O82
AAD1682
AAD1892
AHA1313
AHD1995
AWZ3196
AWZ3199
1. CORDWITH PLUG
2. CHASSTS
3. RUBEERSHEET
,I. WASHER
5. PCBMOULD
7.
8.
10.
11.
L2.
13.
L1.
15.
t7.
18.
20.
21.
22.
23.
24.
SCREW
scREw 3x 18
SCREW3X 18
WASHER
SCREW
LEGASSEMELY
FRONTPANEL
DISPLAYPLATE
GOLDENBUTTON
STATION BUTTON
WAKEUPBUTTON AAD1893
BONNET ANEI285
FMANTENNA ADH1OOs
LOOPANTENNAASSEMELY AT81006
srDEPAD(L) AHA1312
SIDEPAD(R)
PACKINCCASE
PACKINGSHEET
MAINASSEMBLY
DISPLAYASSEMBLY
EARTHPLATE(F-294/ZEWZor.l,r)

4. J
B
U
32
v
6
, {
L l

5. 6
ffi
"-iV
<s
J6
t .

6. 3. SCHEMATICDIAGRAM
Q i l O 8
r f " "
I
f
'"
-"""t l
t - " - "t l
ffil313rEi,
n
I

7. b54
Q I O 4 , 1 1 O 5
D C A M P
1OOOPZE||Z 47' ZM
0i oo1
Dl 002
D 1 0 0 i , 1 1 1 2 - 1 1 1 7 ,
1 1 1 9 , 1 1 2 1
0 1 1 1 a , 1 1 2 0
L 1 1 0 4
F 1 0 0 2
F 1 1 0 3
F 11 0 4
F 1 1 0 5
l.*-l
Glrel
. T V
. F M
" A M
c 1 1 0 1
t c 1 1 0 2
t c 1 1 0 3
o 1 0 0 1
0 1 1 0 3
0 1 1 0 4
0 1 1 0 5
0 1 1 0 4 - 1 1 1 0
0 11 1 1 - 11 1 2
o 1 1 1 3 - 1 1 1 5 , 1 1 1 7
0 11 1 6
I Lte?001
: LA12655
: AN747OP
I RN12O3
! 2SC266a
! 2SK246
: 2SC1740SLN
:RN220l
.RN1203
.2SC245a
| 2SA1O48
t c l ! o t
: 1 S V 1 5 6
! RD7.sESB
: Hssl 04-02
: 1SSas
: ATE-O79
:ATF-107 ZEB
ATF*I 19 ZEWZ
: ATF-107
:ATF-2Oa ZEB
41F1042 ZEWZ
3ATF10Sg
:AXXlOl2 ZEB
AXXIOl4 ZEWZ
: A X X 1 O 1 3
: ACPI042
: ACPl043
! ASSi O42
:ATF1027
T 1 1 0 3
T 11 0 4
vR1102
vR1104
x 1 1 0 1
x 1 1 0 2
TCl 101 : ACt,|-Ola
C 1 1 1 O , 1 1 1 6 : A C G 1 O 2 1
C 1 1 1 4 , 1 1 4 0 , 1 1 6 6 : A C G I O 2 2
C 1 1 4 2 : A C G 1 O 1 6
D 1 1 6 2 : A C E 1 O 3 9
654

8. I
,:l1""t"'- *:""r*:,r;r J t - - -
I r c l o l
I M l c R o
;ET!- coMPUTER
{ N ) = =
8 a c 9 :
_ - t
j ;
: F F $ i l F i l fF *H F F s$ F F; " "
F P P i P * . * E T f t F F ; i
tr,
s l 0 1 - 1 2 0 , : 1 S G l O 3 4
12t-1 28.1 30
, P D 4 3 2 8 A 9 z E BD 1 O 1 - 1 0 4 .
PD4328A ZEB 106"1 13
PD429]A ZEWZD105
.2SC2458
:RNi2O3
: HSSl04-02
x 1 0 l
c104
ct 07
. ASSIOi 8
:ACH1037
:ACG1020
l,RESISTORS:
lndicated6-n, t1+W,1/6W and L/gW, +S% tolcranccunless
otherwisenoted k; kO, M; MO, (F) ; +l%, (G); +2%,
(K); +ro%, (M); +2O%tolcrancc.
2.CAPACITORS:
Indicatedin capacity(pF)/voltagc(V)unlessothcrwisenotedp;
pF. Indeicationwithout voltagc is 50V exccpt electrolytic
capacitor.
3,VOLTAGE,CURRENT:
L] ; DC voltage(V) at no inputsignal.
Valuein ( ) is DC voltageat rated powcr.
€mA ; DC currentat no inputsignal.
I mVl ; Signalvoltagcat FM 400H2-f75HzDEV.
4.OTHERS:
* ; 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 capacitorsand resistorshave parts numbcrs.
#; D1 and R1 through R7 are uscd with PD4328A9 only.
This is the basic schernaticdiagram, but the actual circuit may
vary duc to improvcmcnts in design.

9. 4. P.C.BOARDCONNECTIONDIAGRAMS
T U N E RM A I N A S S ' Y
r€-r.,rq]
rgLrql
d
^)
. Ht.
t - " 6 .l F-
T O D E C K
FE MOOULEASS'Y
(AXOIOO2For ZEB
(AXOIOO4 For ZEWZ
t y p s )
t y p €)
rh. dFds cnh.r hnr.d whho
rh. diod. r.mhrr F!*.d w rh6) {
TUNEROISPLAY ASS'Y (AWZ3I99 )
{ | q".,.e ro o
/ - Y o - , o ; ' i
( o 0 . E i ' i
l - o o ' o
C M KI 4 O S X
- R ' ' 5 o o - , . , , o o " , " 6 d " , , 0 " o ,
I]6zrcd y,
:l -' r+ll$*iIj o o 6 o . o o o . o o . . o o o o a a a a a a a . a o

10. E RM A I N A S S ' Y ( A W 2 3 1 9 6F o r Z E B t v D e )
( A W 2 3 1 9 7F o r Z E W Zl v p e )
o l l 1 7
o t 1 l 4
o l l l 5
o | l l 6
t c l l 0 J
o 1 2
o t 1 1 3
Q l l l l
xs0t ) 11l
i !.r:,-wz
/*tda4^
vRl I 02
TCr101
Rt t03
vRl I 04
o1001
t c l t 0 2
ot 105
or 103
ol 104
ot l08
01109
o t 1 t o
t c l l o l
l c l o 1
or02
oA N P I 4 5 BC
=l /.
i-.]l . . -/
EAF:E!----
o- .'5)
f I
o-..'€)
L u
L l 1
I
a ; l P o ! 6 o . t
.",;"" . elt{ :Ortl tV .1"
zEa
ONL
1o
o
g o
l i e r o o - o
i i
O . . ' r l , ; , ;

11. l .
This P.C.B.connectiondiagramis viewed{rom the foil side.
( e o v t 8 3 r o l a e l E S W A )
( e q V t W 3 r o q T e f E W A )
Y'AAA i l IAI/ F
s ro
D I O
e t o
a l o
c o lt c l
s t o
e l l t o
l t o
soI Itv
toI tcr
€ 0 t I w
|o I tnv
looto
s 0 l t 3|
eo o
eolro
! o l t o
a0l l0
eot to
0 l o
tot tf,l
l 0 t 3 l
soto
I
oT * '
J ;
TTI I
t
iti - ; ?9
t l.iru*i
A
cfi,.-r{.ax i:*:3';,,,,,;i:;::S,a:Tli[:l
.lr;- = ,:"i,ffir '' r @'"oriS4gl'luj
H',|
tF I iirill; .l',,,' "fl:&:*,1,0u|"gr".-
'fffi,s[*#ff.ti"lr : :y.1:l'1]t. . &",:"3::3.""l'"ef-l fil: : ir"":.
;': "
":""
;-]:lJ"* * o,l:u)::"S-6' 'k"
il ' "' ?.' .
1",;,'Y:Ili,r..,:,$::*:,::.."; I'"eP-rffit";ir..
_,.ro.--.*-"o-o o "d";
," .,:"A""":::r'.i*- .3-;I " "" ""r"- '"rcD;
t.d
'e
.
o i 4
I"4E' f i +"i*":-5'.:l:1fT-jffiA*.#l
;%.:;t;:s,* :";f[c4gX{":"":
{ u.G ,"=:'.}:- . " -*,tf'.1,8"=A:;--1,1-.<
n:Tl-:/Tx?;ril:'ii ' _ ".TIT
"."fr:# x".d"'b* F
@/-2
[ _ L
l - ' . . i
I 6 J l
l Hlr.__. @

12. s
eMAfaAto
I
140lTf,lt/tl/tof,ofAo8.f,.q .$
Y' EEA ViIAM R3I4UT
qMA )Cfo 0T
Y'aaA 3JUOOM3i
( egyt A3S tol SOOIOXA)
( eqyt W3S rof $OOIOXA)
(ee1€wA)Y'?eAYAJqAIO R3t4UT

13. 5. P.C.B'SPARTSLIST
NOTES:
o Parts uithout part nurnbercannolbesupplied.
o Partsrnarkedbg" A " arenot alwagskeplin stock. Theird,eliaerytimemaybelongerthanusualor theymagbe
unaoailable.
o 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.
o When ord,ering resistors, first conoert resistance aaluesinto codeform as shown in the following eramples.
Er1
Ec.2
When there are 2 elfecthte digits (ang d.igit apart frorn 0), such os 560 ohm and,4 ohm (tolerance is
shownby J: 5%, and K: lO%).
560e 56x 10' 561 '....'.......... ........RD1/.ipsFlFl[-l.t
47k!t17x 103 47s ................ ........noi/.tpsT7llslt
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
Symbol& Description Pa.t ilo. Symbol& Dercription P.rt l{o.
oTUNERMAtNASS' Y(AW23196)
SEMICONDUCTORS
1M7001
LA12655
ANTITOP
RN1203
25C2558
2SK246
2SClTilosLN
RN2201
RN1203
25C2458
2SA1oi|8
25C245A
RD7.5ESB
HSS10+02
1SS85
H5S10402
H5S10+02
LAUOlOM
ATE.079
LAU2R2M
ATF.107
ATF-208
cKDYF223Z50
CEASORlMSO
CKDYF223ZEO
ACG1021
cEAS470M10
ACG1022
CFTXA224J5O
ACG1021
cEAS330M16
cFTXA224J50
c1123,C1124
c1136
c1137-CI139
c11lo
c1141
ctr42
c1143
C11il4
c1145
c1147
c1148
c1149
cl150
c1151
c7152
c1153
c1154
c1156,C1157
c1158
c1161
cl162
c1154
c1159
c1166
c1169,C1170
c1171,C1172
c1173
c1174
c1r76
c1179
RESISTORS
vR1102
vR1103
vR1104
CERAMICCAPACITOR
ELECTR.CAPACITOR
CERAMICCAPACITOR
cAPACITOR(0.022pF)
ELECTR.CAPACITOR
CAPACITOR(a?p/50)
CERAMICCAPACITOR
ELECTR.CAPACITOR
ELECTR.CAPACITOR
CERAMICCAPACITOR
CERAMICCAPACITOR
ELECTR.CAPACITOR
ELECTR.CAPACITOR
CERAMICCAPACITOR
ELECTR.CAPACITOR
CERAMICCAPACITOR
ELECTR.CAPACITOR
CERAMICCAPACITOR
ELECTR.CAPACITOR
CERAMICCAPACITOR
cAPAclToR(a70pl50)
ELECTR.CAPACITOR
€LECTR.CAPACITOR
ELECTR.CAPACITOR
CAPACITOR(0.022pF)
ELECTR.CAPACITOR
CERAMICCAPACITOR
ELECTR.CAPACITOR
ELECTR.CAPACITOR
CERAMICCAPACITOR
ELECTR.CAPACITOR
vR(4.7Ka)
VR(10Ko)
vR(22KO)
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
ACP1042
VRT86VS1O3
ACP1043
RD1/sPMmJ
PLLIC
AM/FM/tc
MPX IC
TRANSISTOR
TRANSISTOR
N-FET
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
D1OO2 ZENERDIODF
D1003,D1112-D1117DTODE
D1118 DIODE
D1119 DIODE
D1120 DIODE
D1121 DIODE
COITSANDFIITERS
L1OO2 AXIALINDUCTOR
L1104 CO|L
11105,11107AXIALINDUCTOR
F1102,F1103FM CERAMICFILTER
F1104 AM CERAMICFILTER
CAPACITORS
C1OO3 CERAMICCAPACITOR
c1004,c100s ELEcTR.cAPACtTOR
c11O9/ CERAMTCCAPACTTOR
Cl110 CAPACITOR(0.01pF)
C1111 ELECTR.CAPACITOR
C1114 CAPACITOR(0.022pF)
C1115 AUDIOFILMCAPACITOR
C1116 CAPACITOR(0.01pF)
C1117 ELECTR.CAPACITOR
C1118 AUDIOFILMCAPACITOR
1c1101
1c1102
1c1103
Q1001
Q1103
Q110,0
Q1105
Q1108-Q1110
Q1111,Q1112
Q1114,Q1115
Q1116
OTHERRESISTORS

14. Symbol& Description Part o.
OTHERS
cN54
x1101
x1102
14PJUMPERCONNECTORKPE14
RESONATOR(7.20MH2) ASS1042
CERAMICRESONATOR ATFTO2T
ANTENNATERMINAL+P AKAIO1O
AM RFTUNINGBLOCK AXX1O12
(T1103)
AM RF TUNINGBLOCK AXX1OT3
(T110/0)
2SERIALFE MODULEAS5'Y AXQlOO2
oruNERDrsPrAYASS'Y(AWZ3r99)
SEMICONDUCTORS
tc101 coNTRoLtc
Q1O1 TRANSISTOR
Q1O2 TRANSISTOR
Dl DIODE
D10t-D104 DTODE
D1O5 ZENERDIODE
Dlo6Dl13 DTODE
PD4328A
25C2458
RN1M3
1SS152
H5S1o+02
RD9.IESB
HSSlM-02
SWITCHES
5101-5120. SWTTCH ASG1034
s12&s128,S130
cotL
LlO1 AXIAL INDUCTOR LAU22OK
CAPACITORS
C1OI AUDIO FILM CAPACITOR CFTXA224J5O
C1O2 ELECTR.CAPACITOR CEJA1OOM35
C1O3 ELECTR.CAPACITOR CEJA47OM16
c104 CAPACTTOR(47I1o) ACH1037
C1O5 ELECTR.CAPACITOR CEJA47OM16
C1O6 CERAMICCAPACITOR CKDYX473M25
C107 CAPACITOR(1q)0P/50) ACG1020
C1O8 ELECTR,CAPACITOR CEJA4R7M35
C1O9 CERAMICCAPACITOR CKDYX4?3M25
RESISTORS
ALL RESISTORS RD1/sPMfmJ
OTHERS
VlO1 FL IUAE MV1O7O
x101 RESONATOR(4.19MH2)ASS1018

15. 6. ADJUSTMENTS
O As to connections and points to be adjusted, refer to Fig. 6-1
O Where and asterisk(*) is given for "level dBpr," set to the
between TP1104 and GND at 60dB.
6.1 AM TUNERADJUSTMENT
O Set the BAND selector to '(AM",
and Fig. 6-2.
level (dBp) at which the voltage is roughly half the voltage
Stcp
ilo.
Adjurtmcnt Titlc
AM SG(feOHz,30olomodslrtion) Rcccption
Frcqucncy
Dirolrv
Adiuctment
Frcqucncy(lHr) Icvcl(dBp)
Adjurtmcnt
Location
Spccificetionr
1
Tracking adjustment
(ZEWZ typc only)
603 603kHz
MW blockANT coil
(T1103)
Adjust so that the DC voltagc
bctwccn TP11O4 and GND is
maximum.2 1395 1395kHz TC1101
3 R c p c a t l a n d 2 a b o v c
4
TUNEDindicator
scnsitivitvadiustmcnt
999 55-t-5 999kHz vR1104
Adjust so that thc indicator
lights up.
6.2 FM TUNERADJUSTMENT
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 6.75kHz dev.
Stcp
No.
Adjortmcot Titlc
FM SG(trHztT5lHr dcv.) Rcccption
Frcqocncy
Dirohv
Adiurtment
Frequcncy(ll Hz) !cvcl(dBp)
Adjuctmcnt
Locrtion
Spccificetionr
I
Detector coil
T-mctcr adjustmcnt
98.0
(No modulation)
80 98.0MHz L11(X
Adjust so that thc DC voltage
between TP1101 and TP1l02 is-F
50mV.
2 VCO adjustment
98.0
(No modulation)
80 98.0MHz vR1102
Adjust so that the frcqucncy
bctwccnTP1105and GNDis 76t
0.5kHz
3
TUNEDindicator
scnsitivityadjustmcnt
98.0
(No modulation)
22 98.0MHz vR1103
Adjust so that the indicator lights
uP.
1 5

16. 6. REGLAGE
. Lesraccordementset lespointsde rdglagessontreprdsentdsi la Fig.6-l et Fig.6-2.
o Lorsqu'un astdrisqueaccompagneun "niveaudBp", rdgler i un niveau (dBl) tel que la tensionsoit i peu prds la moitid
de cellequi estpr6senteentreTP1104et GND pour 60 dB.
6I R€GIAGEDUSYNTONISEURAM
. Placerle s6lecteurBAND surla Dosition'AM".
Et.pe
No. Items de 169lage
AM SG(400H2,30o/omodulationl Affichagede
l.6qusncede
rcception
R6glage
Fr6quence (kHz) Niveau(dBll Lieude
r€glage Caract6ristiques
I R6glagede l'alignement
(Sculslcstypc ZEWZ)
603 603kHz
Bobine-antenne
blocPO{T1103) R6glerdemanidrequelaten-
sioncontinueentreTP1104et
GNDsoitmaximale.
2 1395 1395kH? TC110'l
3 Repdtelet2ci-dessus.
lndicalcursdcTUNED
Nivcaud'aclaircrrcnt
999 999kHz vR1104
Lc raglcrdc draniar.qu. l.s
indicatcursd. TUNED coF|
rncnccnti s'allumcr.
6.2REGLAGEDUSYNToNISEURFM
o Placerle s6lecteurBAND surla position"FM".
. Rdglerle VCO apresdeuxminutes(ou plus)de misesoustension.
Note: Modulation st6r6o: Principal lkHz L + R ):68,25H2deu
Pilote lgkHz +6,75kH2deu
Et.pe
N'
Items de 169lage
FM SG {1kHz1 75kHzd6v.l
Affichage de
fr6quence de
16ception
R6glage
Fr6quence
(Mtl2)
Niv6au
(dBp)
Lieu de
.69lage Caract6.istiques
R6glagede la bobinede
d6tection
98,0
lsansmodulationl
80 98,0MHz 11104
Rdglcrde rn:niirc quc la tcnJon
continuccntrc TPU01 .t TP1102
soitagalci t50mv.
2 Reglagedu VCO
98,0
{sansmodulation) 80 98,0MHz vR1't02
R6ghrdc nuniirc quc la frdqucncc
cntrc TP1105.t GND soit ;gal. i
76 t 0.5kHz.
lndicat.urs dc TUNED
Niv..u d'acl.ir.mcnt
98,0
(Non mudulation)
98,0MHz vR1103
Le rcglcr dc maniarcquc hs indi-
catcursdc TUNEDcomrnnccnr:
s'allumcr.

17. I
6.AJUSTE
r Paralasconexionesy puntosdeajuste,refidrasea la Fig.6-1 y Fig.6-2.
r Donde un asterisco(*) representeel "nivel dBp", ajuste al nivel (dBll) en el quc la tensidn sea aproximadamentela
mitaddela tensi6nentreTP110.1yGND a 60 dB.
6I AJUSTEDELA SECCIoNDELSINTONIZADORDEAM
. Ajusteel selectorBAND a Iaposici6n'AM".
6.2 AJUSTEDE LA SECCIONDELSINTONIZADORDE FM
. AjusteelselectorBANDalaposici6n"FM".
. RealiceelajusteVCOdosminutoso mdsdespu6sdeconectarlaalimentaci6n.
Nota: Modulaci6n estereo: P ncipal lkHz L + R t68.25H2 deu
Pilote 1gkHz:t 6.75kHzdev
N'. de
paso Items de aiuste
AM SG(400H2,30%rhodulation) Frecuen-
cimetlo de
recepti6n
Ajuste
Frequencia(kHz) Nivel (dBt)
Lugarde
ajuste
Especificaciones
,1
A,ustede alineaci6n
(Sr;lolostipo ZEWZ)
603 603kHz
Bobinade antena
colectivade MW
(T'1103)
Ajustede maneraquela ten-
sion de CC entre TP1104y
GNDseala m6xima.2 1395
'1395kH2 TC1101
3 Repitalospasos1 y 2 arribadescritos
4
Nivcl de iluminaci6n
dc TUNED.
999 999kHz vR1104
Ajnstclo de forma qu. lo3
indicador.s dc TUNED
comi.nc.n a.nc.nd.ras..
N". de
paso Items de ajuste
FM SG llkHz:t 75kHzdsv.) Frecuencimetro
oe
de recepci6n
Aiust6
Frequencia
(MHz)
Nivel
ldBr)
Lugarde
ajuste
Esoecificaciones
I
Ajustedel medidorT de la
bobinadetectora
98,0
(Sinmodulaci6n)
80 98.0MHz 11104
Ajutt. d. 'nancraquc l. tcn5i6{
dc CC.ntrc TP1101y TP1102
5.a d. A50mV.
Aiustevco
98,0
{Sinmoduiaci6ni
80 98.0MHz vR1102
Ajlstc da manaraquala fr€qucn-
ci. cntrc TP1105y GND sla dc
76 t 0.5kHz.
Nivcl dc iluminaci6n
de TUNED.
98.0
(Nonmudulation) 22 98.0MHz vR1103
Ajnstclo dc form. quc los indica-
dorcs dc TUNED cornicnccn a
ancandaras€,

18. AM antenna
terminal
OutputterminalL,R(Ell83)
FM 75 A anlenna torminal
Fig,6-1AM andFMadjustmentwiringdiagram
Borne
d'antenneAM
Bornede sortieL, R (
Borne d'antonne FM de 75 ohmios
Terminalde salidaL, R (ll
Terminal de la antena de FM de 75 ohmios
l-.,".","1I
I
r'ecuencia
I
Voltmalre CA
Fig.6-1Diagrammede cdblagede r6glageAM et FM
Terminalde la
antenade AM
1 A
Fig.6-1Diagrammade conexi6nde ajustede AM y FM

19. *1 : OnlyZEWZtype
SeulslestypeZEWZ
56lolostipoZEWZ
TC110.tfl
@
@
| | MTuBLocx
Lgl 3l33u!oo,*
T1101
TP1101
o
TPr105
og6'*
*;,;*@
@vRl104
TPl102
o L1104
@
l$1(r2
R OUT
@ Rrra5
,@ R11E6
L cltr
TUNERMAIN ASS'Y
FE assenbly
Fig.6-2Adjustmentpoints
Fig.6-2Pointsde 169lage
Fig.6-2Puntosde ajuste

20. 7. FORF-294/ZEWZTYPE
NOTES :
. Parts uithout part number cannot besupplied,.
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'ZC0IZEWZtypeisthesameasthe F-Z94LIZEBtypewiththeexceptionof thefollowingsections.
Mark Symbol& Dcscription
PartNo.
Remarks
F-294L/ZEBlvpe F-794/LEWZtvpc
o
FM antenna
FM antcnnaasscmbly
Packingcasc
Front panel
Main assembly
i:::::
AHD1995
AMB1739
AWZ3196
ADHlOO2
AHD1994
AMB1738
AWZ3197
Forpacking
Main Aeeembty(AWz3l9z)
The Mainassembly(AWZ3l9?)isthe 6ameas the Mainassembly(AWZ3l96)withthe exceptionof the
followingsections.
Mark Symbol& Dcscription
PartNo.
Remarks
AWZ3196 AWZ3197
Q1110
Q1111,Q1112
Ql113
D1001
D1116,D1117,D1119,D1121
D1118,D1120
t1001,11106
11102
11003
F1102
F1104
F1105
TC1101
c1001
c1002
c1003
cl011,c1013
c1012
c1136
c1137
c1138
c1159
c1160
c1167,C1168
RN2201
:::::
H5S10402
15S85
LAUOlOM
ATF-107
ATF-208
cKDYF223Z50
cEA5330M16
cKDYF223Z50
cKDYF223Z50
25C2458
1SV156
:1::::v
LAU4TOK
ATF-119
ATF1O42
ATF1088
ACM-018
cKDYF102Z50
:::::i:""
CKDYBlO2K5O
ccDsL680J50
cKDYX473M25
;;;;;;;,*,
CEAS2R2M50
CKDYB392K5O

21. I
I
Mark Symbol& Dcscription
Part No.
Rcmarks
AWZ3196 AWZ3197
cLr7L.C1L72
c1175
c1176
R1001
R1002
R1003
R1007
R1139,R1142,R1143
R1140
R1141
Rl144
R1163
R1164
R1165
R1166
R1167
Rl174
R1183,R1184
R1192
Antennatcrminal(PAL4P)
Antennatcrminal(2P)
FEmodulcassembly(21)
FEmodulcasscmbly(4L)
AM RFtuningblock(MW)
AM RFtuningblock(LW)
:::::i:'o'
cKDYF103Z50
RD1/8PM472J
::11:'.y'*'
RDl/8PM681J
RD1/8PM104J
RD1/8PM102J
RD1/8PM392J
RD1/8PM913J
RDl/8PM302J
RD1/8PM103J
AKAlOlO
AXQlOO2
;;;;
AXX1O13
cKcYB102K50
:v::i:"*
1:t/::v'"'
RD1/8PM153J
RD1/8PM560J
RDl/8PM224J
RD1/8PM473J
RD1/8PM222J
RD1/8PM122J
RD1/8PM472J
RD1/8PM473J
RD1/8PM472J
RD1/8PM472J
AKA1O12
;;'*
AXX1014

22. 8. PANELFACILITIES
REARPANELFACILITIES
O FM/AMANTENNAterminals
Antennasmustbeconnectedto theseterminals:otherwiseyouwillnot
be ableto receivestations.See page 4 for detailson ANTENNA
CONNECTIONS.
@rururn input/outputcord
Connect to the TUNER jack of the cassette deck amplifier.
FRONTPANELFACILITIES
oEoMa -.--*^-./,- -----. --. FZ94L

23. 9 9l l
I
rwEo
Y.Il-l?trtr
,Xl**",-{r
@ Displaysection
Shows current time, received frequency, contents of timer settings, etc.
@ser button
Used for current time, timer playback, and timer recording setting.
@clocK ADJbutton
Used for starting the clock adiustment.
@ 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 adjustingthe clock, timer settihgs and its relatedadjustments.
@ LocAL button
Use this if the broadcast signal is too strong, causing noise and
distortion. The atttenuator reducesthe strength of the signal, reducing
noise and distortion.
@ MPX (FMMoNol button
Turn on when there is much noise during reception of FM stereo
broadcasts.The reproducedsound will become monaural but noisewill
be reduced.
@nnennonybutton
Used for memorizing stations. When the button is pressed, the
frequency display will flash. To memorizethe frequency of any station,
press a station call button while the frequency display flashes.
@ BANDselectorbutton
Eachtime 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.
@sleePbutton
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.
90 .+ 30-
I (Approx.90 (Approx.60 (Approx.30I
I minutes) minutes) minutes)
I
' (AUT OF F .
lf you pressthe SLEEPbutton during recording,AUTO is displayed,and
power is switched off at the end of recording.
LOCAL
.El El o..'Ll
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) SLEEPindicator
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.
@srATIoNCALLbuttons
Used for memorizing and recalling memorized stations.
@ Timerselectorbuttons
IWAKE-UP1,21
Usedfor timerplaybacksetting.
TRECI
Usedfor timerrecordingsetting.
Itrfffrvf
lU lTtil
Ml
,AI
< 5