Pioneer SX-9000 User manual

INSTALLAT
ION. OPERATION
AND SERVICE
MANUAL
IncludingPARTS
LIST,CIRCUIT
DIAGRAMS,
TROUBLE
SHOOTING
AND
MOUNTINGTEMPLATE.
rJIONEEIiI'

FEATURES
A MULTI-PURPOSE,
EASY-TO.USE
DESIGN
The SX-9000 was designedto give you a high degreeof versatility
in operation.
You can,for example,
usetwo microphones,two tape
decks,
two headsetswith the SX 9000. All controls are rationallv
placed
for easy use.
The circuitry is qrlite advanced,on a par with
professional
designs.
CLEAN-LINED,CONTEMPORARYAPPEARANCE
The SX-9000 looks
good,too. The front incorporates
a folding
panel
that adds to its distinctivedesign.When in operation,the smoked
glass
dial window lightsup with subduedillumination.andthe source
alsolightsup for quick identification.
HIGH
PERFORMANCE
TUNER
The SX-9000 employs the latest
circuitry, including FET and lC's.
The resu lt is a professional receiver of exceptional sensitivity and
stabiIity.
PRE-SET
TONECOLORS
In addition to the normal bass and treble controls, there is a
4-positiontone color selector
knob. This provides
quick switching
from "flat" to "soft", "bass" or "vivid". These cttaracteristics
are
svmbolized
in an illuminated
window in the dial face.
TAPE-TO-TAPE
MONITOR
ING
Two buttons on the front panel allow easy,
one-touchmonitoring of
tapes "A" or "8" when you usethe SX 9000 to copy directly from
onetapeto another.
FOOLPROOFMICROPHONE
USE
When either microphone knob is set to OFF, the unit operatesin
parallel
to provide monophonic signals
for both speakers without
having
to setthe modeswitch.
REVERBERATION
EFFECT
Also included is a reverberation
effect knob. The degreeof "echo" is
easily
read
in the "Reverberation"
window in the dial face"
SPECIAL
"OVERLOAD
PROTECTION''
You can play up to three different pairs of speakersystemsthrough
the SX-9000 in combinations
A, B, C, A+8, A+C, B+C. lf all three
are accidentally turned on, however,the "Overload Protection" goes
into actionand the speakers
areautomatically
shutoff.
EARPHONE
VERSATILITY
Becausethe SX-9000 hastwo "earphones" output jacks,two people
may Iisten simultaneously with earphones without having to go
through an accessory
junction box.

I TJTONEER
LINEVOLTAGE
SELECTIONANDFUSE
SWITCHING
LINE VOLTAGE
SETTINGAND FUSE
To remove the fuse, turn the fuse cap located on the line
voltage selector switch in the direction indicated by the
arrow. Then remove the fuse plug from the unit. Put the
fuse plug back so that the proper line voltagemarking can
be seenthrough the cut on the edgeof the plug. Whenever
the position of the selector switch is changed,check the
ratingof the fuse.
A 1.5-ampere
fuse
is to beusedforeither
22OY or 240V operation and a S-ampere
fusefor 110V,
120V or 130V operation.
If the ratingof thefuseiscorrect,
replace
cap.
FUSEREPLACEMENT
If the fuse blows, removethe fuse capand replace
the fuse
with a new one.
STEREOSYSTEM
The SX-9000 is general-purpose
stereoamplifier. Connectit
to the speaker systems (two to six), turntable, tape
recorder,etc., which are separately
available.
INSTALLATION
When installing your stereo
points. system, check the following
o The place should be well-ventilated, and free from
dampnessand dust.
o The units should not be exposed
to direct sunlight.
o The units should not be placed near radiators or other
heatingunits.
o The place should be substantial
and roomy enough
for the
installation, when installingthe unit on a shelf.
A WORD
ABOUTROOMACOUSTICS
The quality of reproduced sound varies according to the
size and shape of the room, the materials of walls, floor
and ceiling and the amount and arrangementof fumiture.
Too harsh or "bright" a sound usually results from too
many hard reflecting surfaces,and/or too low a ceiling.
This condition is improved by having ample carpet areaor
coveringthe wall (especially
that facing the speakers)
with
a thick curtain.
On the other hand, too many absorbingsurfaces
will tend
to "soak up" the sound, resulting in a certain "deadness".
Furniture may be rearranged
to provide irregularreflection
of the sound. In any event, the true stereo effect is lost if
the two speakersystems
areplacedtoo far apart. This may
be corrected by angling them slightly toward eachother or
reducingthe distance
betweenthem.
FUSE
CAP
Fig. 1
Take off the fuse
cap by turning it with a coin,
etc.an the direction
indicated
by the arrow mark.
A SPEAKER SYSTEM B SPEAKER SYSTEM C SPEAKER SYSTEM
Fig. 2

SPEAKHR
SYSTEM
CONNECTIONS
o First remove the speaker connector plugs from the
accessories
bag and then connect the speaker leads as
shown in Fig. 3. Be sure to match the speakerand plug
polarities.
o After the plugsare connected,insert the one for the right
channel in the left side of the SPEAKER OUTPUTS (A)
panel on the rear of the unit. Connectthe left channelto
the right sideof this panelasshownin Fig.3.(Refer also
to the connection diagramon Page4.)
. If you have one (or two) more speaker system(s),
connect them in the same way, using the B (and C)
terminals.
ANTENNA
AND
GROUND
CONNECTIONS
When using the SX-9000 at a placeof low field strengthor
distant from the station, select the most suitable FM and
AM antennasas follows, and the efficiency of any antenna
depends
on its height more than its length.
FM ANTENNA
o Reception is easierif the building is primarily of wood
and is nearthe FM station, in this case,
usethe accessory
T-type indoor antenna.Unfold the horizontal section of
the antenna to its full length, and determine the best
direction for the antenna while actually receivingan FM
broadcast program. Attach the horizontal section to a
wall or other placein the determineddirection.(See
Fig.4.)
o When using the SX-9000 at a relatively long distance
from the station, or within a building or home with
relatively thick walls, or vicinity of tall buildings,erectan
FM outdoor antenna, and connect it to the FM antenna
terminalsasshown in Fig. 5.
AM ANTENNA
o If your houseis located in area
relatively closeto the AM
station, the ferrite loopstick antenna provided on the
back of the SX-9000 will be sufficient for reception of
AM broadcast program. The antenna is directional it
should be moved about while listening to a station and
set at the position which provides the best reception.
(
See Fig.
6.
)
. If the loopstick antenna does not provide sufficient
sensitivity for reception and static is noticeable,put the
furnished antenna wire on the wall and connect one end
of the wire to the AM antennaterminal. (SeJfig. +.;
o If you want reception from a distant AM station, you
may have to set up an AM outdoor antenna. In such a
case,connect one end of the AM outdoor antenna
to the
AM antennaterminal. (See
Fig. b.)
RIGHT CH
SPEAKERSYSTEM
LEFT CH Fig. 3
SPEAKER SVSTEM
Fig.
-' FM OUTDOOR ANTENNA
AM OUTDOOR
ANTENNA
Fig. 5

CONNECTION
DIAGRAM
NOTE:
lf connecting one set of speaker sys-
tems to speaker output terminal the
speaker of each channel should be 4
to | 6 ohms : however, both outPut
terminals (A,B and C speakers)to two
speaker systems the of each channel,
8 to 16 ohms.
AM ANTENNA
AM FERRITE ANTENNA
PRE OUT
& MIXING
REC. pAE & t,,tntN
MAIN
IN
JNTfR
COUPLED
PHONO
MAG I MAG 2
SPEAKER PLUGS
SPEAKER OUTPUTS
i4 to |6() r
CENTER
CHANNE
OUTPUT
lo)t
Y7
e*clTAPE
REC P.B
/^
TAPE TAPE
MON A REC. A
I:'l
-
-4,
I
r
FUSE
5A: 240V
220V
34: |
30V
|20v
|
10v #
@
TURNTABLES
(RECORD
PLAYERS)
GROUNDING
The SX-g000 will provide stable performance
whether
grounded or not. In rare case,however, grounding may
help. If so, connect a wire from the GND terminal to a
water pipe or balcony, fastening
it FIRMLY. Neverusea
gas
pipe asa ground.
MICROPHONE
CONNECTION
Insert the plug on the microphone cord into either one of
the MIC jacks on the front panel of the unit.
Use both jacks when you wish to employ two microphones
at the sametime.'
oer! ! f ...
TAPE DECK OR TAPE RECORDER
MICROPHONE A
(LEFT CH.)
TURNTI
. If the tur
cartridge,
1 termina
crystal car
Connectt
right to tl
either terr
o A second
used,con.
. If a tumt
used, eith
separateh
. Some tur
terminals
with the s

FM INDOOR ANTENNA
HED
-l
--1
-!
FM OUTDOOR
ANTENNA
NTABLE
CONNECTION
:retuintable is equipped with a moving-magnet
type
:idge,connect its output cords to the PHONO MAG
rminais
on the rear of the unit. If the turntable hasa
balca'tridge,connect it to the AUX 1 terminals.
nectthe left channel cord to the upper terminal, the
bto thelower. If the cartridge
is of monophonic
type,
:r terminalwill do.
:cond turntable with magnet type cartridge is to be
l, conoect
its cords to the PHONOMAG 2 terminals.
turntable with a moving-coil (MC) cartridge is to be
l, either a matching transformer for MC cartridge or
ratehead
amplifier must be employed.
Leturntable output cord plugs do not match the
rinals
of this unit. In such a case,
replacethe plugs
L
the spares
provided in the accessories
bag.
PI()NEER
TAPEDECK
(RECORDER)
CONNECTION
. A tape deck connected to this unit must have a
record/playback
preamplifier
built-in. PIONEER's
models
T-600 and T-500 feature characteristics
ideally suited
to the SX-9000.
o The connected tape recorder should also have output
terminals for tape recorder connection (LINE OUT) or
tapemonitor terminals.
CONNECTION
FOR
TAPERECORDING
Connect this unit's TAPE REC terminals to the signalinput
(LINE IN) terminals of the tape deck. Use the cords
provided with the deck. The upper terminal is for the left
channel, the lower for the right. If the tape deck is of
monophonic type, use the CENTER CHANNEL output
terminal instead.
CONNECTION
FORTAPE
PLAYBACK
(OR
MONITOR)
Connectthe LINE OUT or TAPE MONITOR terminals
on
the tape deck to the TAPE MON terminals on this unit.
Connection is done in the same way as described in the
aboveparagraph.
USEOF RECORD/PLAYBACK
CONNECTOR
The tape deck hasa DIN type record/playback
connector,
all recording and playback connections can be made by
means of this one (optional) cord. Plug one end into the
TAPE REC/P.B.
connector
on this unit and the other into
the correspondingconnector on the tape deck. In this case
no other connection cordsarenecessary.
CONNECTION
FOR
MIXED
RECORDING
Connect the tape deck input terminals and this unit's PRE
OUT & MIXING REC terminals. Connection is madein the
sameway asoutlined above.
CONNECTION
WHEN USING TWO TAPE DECKS
(RE-
CORDERS)
When usingtwo tape decks,for example,when you wish to
edit an already-recorded tape or practice along with a
recorded concert, etc., and then hear the results, connect
the secondtape deck to the TAPE MON B and TAPE REC
B jacks on the front of the SX-9000.
These
jacks
take 1/4"
standard
phone plugs.

FRONT
PANEL
FACILITIES
Push once to switch on the power, once again to turn
it off.
PHONESJACKS
These
phones
jacks
for stereo
headset(s).
The two jacks (A, B) areavailable
for connection
with
two stereo
headsets.
TUNING
I
When selecti
pointer of th
possible.
For an FM
way. Precisi
that the dial
TUNING
This knob is
the tunir'g
TONE
INDICATOR
BALANCE
Used
to adju
right chan
channel sou
MODESIIVI
Controlsthe
unit asfol
REV: S
Right
speak
f,eft
Turn this knob to the right to
the left to reduce them. Set
position for flat response.
TREBLE
Useof this knob issimilarto that of the BASSknob.
REVERB
This is the reverberation
adjustmentknob. Turn it to the
right to increase
reverberation,
to the left to reduceit.
accentuate
basstones,
to
the knob at its center
Use this filter to cut out low-frequency
ference,
such
as
motor rumblingor hum.
Usethis filter to cut out high-frequency
ference,such as that from fluorescent
FM
MUTING
This switch is usedto suppressmuch noisebetweenFM
stations when tuning. In a fringe area, however, this
switch should be kept off becauseit may suppressthe
desired
station signalat the sametime.
LOUDNESS
At reducedvolume the ear's
sensitivityto extremelylow
andhigh frequencies
isreduced.Thisswitch compensates
for that phenomenonby emphasizing
thesefrequencies.
At normal or high volumes this switch should be kept
off.
TAPE
MONB JACK
This jack is for connectingto the LINE OUT terminals
of a tapedeckor taperecorder.
It isdesigned to accept
a
3-Ptype plug.
TAPE RECB JACK
For connectingto the LINE IN terminalsof atapedeck
(recorder). Allows recordingof another program source
or tape for editing.
FILTER
LOW:
HIGH:
ST:
LT:
TONE COLOR
aa s 92
AM 55 6ct 70
FM STEREo AM
OFF ON
PO\A/ER 6
PH e
tc

NG
INDICATOR
selecting an ANI broadcast, tune so that the dial
er of the lower meter deflects as far to the right as
ble.
an FM broadcast, use the lower meter in the same
Precision
FM tuning is also possible by adjusting so
thedial pointer of the upper meter is ceutered'
This knob is used to adjust the volume of AM and FM
broadcasts,record play and tape playback' It is also
used to balance the program source signallevel during
mixed recording
with a microphone'
RCE
VOLUME
ASTER
VOLUME
Turn this knob to the right
the speakers.
If this knob is
sound will come frorn the
SOURCE
and MIC LEVEL
all the waYto the right.
SPEAKERS
ABc
TONE COL
ING
knob
unir'g
E COLOR
CATOR REVERBERATION
INDICATOR
is used to locate AM or FM stations' Watch
meter(s) for more Precise
tuning-
to increase
the volumefrom
turned down all the waY
no
speakers,even though the
volume controls are turned
S E LECTOR
PHONO 1
T UNING
IE COLOR
s s2 s1 s6 9A 1OO 1O21O4 106 1O8 MHz
:l- ;-;-; t" t"" 12o 14o 160 xlokHz
ooo
FM PHONO AUX
\SS TREE}LE
VOLUME
BASS. l.
vtvlo
MIN
M A STER Q- souace
ANCE
MIC
LEVEL
CONTROLS
() r:torueen
REVERB ERATION
o
d to e.djust
the stereophonic
balance
between
left and
Ltchannels.
Turning to the left strengthens
the left
nnel
sound;
to the right, the right channel'
LANCE
CONTROL
DE
SIIIITCH
rtrolsthe stereo aud mono output functions of the
t as
foliows .
V: Stereo, with right arld
r3versed.
r Normal stereo.
: Left channel sigual fed
speakers.
: Ii.,ight channel
speakers. signal fed
PUSH ON
MUTING Lo
left chairnel siglals
to both left and right
to both left andright
channel sigr-rals
mixed, then fed
right channel sPeakers.
Control the microphonesignal
input level'
Control A is for a microphone connected
to MIC JACK
A, and Control B for MIC JACK B' Turning eitherto the
right increases
the signal.
Ul"roplrones can be used at any time, for mixing with
another sound source'suchas
arecord or recorded
tape'
When a microphone is not being used, that control
shouldbeturned all the way to the left (off)'
NOTE: When only one microphone
is
used'
its
signal
is
monaurally
fed
through both left andright
speakers'
regardless
of which iackis
useo.
When
two microphones
areused'
however'
the one connected
to jack A broadcasts
through the left speakers'
while the one
connected
to iackB isheard
through
the right'
MON.
B.l
JMIC LE r F:,:
. L"(
TON E
R: l,eft ar-rd
right
tr both left and

' PIONEER
SPEAKERS
Theseswitchesturn the various speakersystemson and
off. Push each button once to turn it on, once againfor
off. Pushing the A button will causethe sound to be
reproduced from the speakers connected to the
SPEAKER A terminals. The B and C buttons control
their corresponding
terminals on the rear of the unit.
NOTE: Only two speakersystemscan be usedat the sametime (i.e..
A+8, B+C, or A+C). lf all three speakerbuttons are pushed
at
the sametime, no soundwill be reproduced.
If you wish to shut off all speakersound, simply press
the OFF button.
TONE
COLOR
This switch is for selecting the particular tone
. your mood or the music beingheard.
VIVID: Emphasizes highs and lows for more
clarity
BASS: Emphasizes
bass
tones.
FLAT: Flat, untemperedtone.
SOFT: High tonesrelatively softened.
TAPEMONITOR
Depress this button to monitor a recording; press it
again and it shuts off. During record or tape play, or
when listening to a broadcast, leave this switch off.
Turning it on automatically switches off the speakers.
This button is intended to aid in checking recording or
editing conditions.
There are two TAPE MONITOR jacks, A and B, on the
rear(A) and front (B) of thisunit, and
thesetwo buttons
correspondto them. Button A directs the signalthrough
jack A, and
button B through
jack B.
SELECTOR
This switch is for choosing
the program source.
AM: For receiving
AM broadcasts.
FM MONO/WIRELESS: For FM monophonic broad-
casts, or for broadcastingthe
signal from a wireless FM
microphone.
FM AUTO: For automatic switchover between FM
mono and stereo
broadcasts.
PHONO 1: For playing records on a turntable con-
nected to the PHONO 1 terminals.
PHONO 2: Same
asabove,
for PHONO 2 terminals.
AUX 1: For playing signals fed to the AUX 1
terminals.
Same
asabove.for AUX 2 terminals.
MIC
JACKA,
B
Pluga microphone
usedinto one of these
jacks.
Two
microphones
can
beused
atthesame
time.
to suit
sound
AUX2:

RECEPTION
OF FM
1. SettheSELECTOR
switch
to FM STEREO.
2. Turn the MUTING switch on (unless
the signalstrength
is
very low-then leave
it off).
3. Tune in the desired
station while watching the TUNING
meters.
Best reception is obtained when the dial pointer of the
Iower meter deflectsasfar to the right as
possiblefor that
station,while that of the uppermeteriscentered.
If the broadcastis stereo.the FM Stereoindicator will
light up. It remains
unlit if the broadcast
ismonophonic,
and the set automatically switchover for monophonic
a. ffi::1""Ting
iscomplete,
slowly
turnupthe
VoLUME
SOURCE and MASTER knobs until the proper levelis
achieved.
Then adjust the BASS, TREBLE, TONE COLOR and
other controlsfor the most pleasing
sound.
5. To increase
reverberation,
turn the REVERB knob to the
right.
For FM reception located far away from the station, or
when externalnoiseishigh,receptioncanbeimprovedby
setting the SELECTOR to FM MONO. In this case,
however,stereoprograms
will be received
asmonophonic.
RECEPTIONOF AM
1. Set
theSELECTOR
switch
to AM.
2. Tune in the desired station while watching the lower
TUNING meter. Tune so that the dial pointer deflectsas
far to the right aspossiblefor that station-
3. After tuning is complete,slowly turn up the VOLUME to
the desired level, then adjust the BASS, TREBLE and
TONE COLOR controls.
4. To increase
reverberation,
turn the REVERB knob to the
right.
If noise is extremely high during both FM and AM
'reception, the problem could be in the antenna and
. ground. Reread the section, ANTENNA CONNECTION
AND GROUNDING,page 3.
LISTENING
TO RECORDS
1. Setthe SELECTOR
switchto PHONO
1 or PHONO
2.
To use the turntable connected to the PHONO 1
terminals,setto PHONO 1, for that connected
to PHONO
2,setto PHONO
2.
2. If tbe record is monophonic, set the MODE switch to
either L or R.
3. Adjust the VOLUME, BASS, TREBLE and TONE
COLORcontrols.
4. To increase
reverberation.
turn the REVERB knob to the
right.

TJIONEEfiI
USING
MICROPHONES
The SX-9000 permits the use of two microphonesat once,
for such purposes as recording a concert in stereo; even
performancesor dramasin large theaters can be efficiently
recorded.
1. Turn the VOLUME - SOURCE knob all the way down if
microphone recording only is desired.
If mixed recording,
combined with music from a record, etc., is desired,set
the SOURCEknob to the bestlevel.
2. Tii,e MIC LEVEL A knob controls the input from a
microphone plugged into MIC jack A; knob B controls
jack B. Tum either of theseknobsto the right to increase
input signal strength. Adjust the level while watching for
"howling" (acoustical feedback of the speaker signal
through the microphone). If this occurs, reduce the
volume or separate
the microphone(s) and speakers.
If
only one microphone is used, plug it into either jack. If
settingthe MIC LEVEL for another
jachnot being
usedto
OFF, the sound
will bereproduced from both speakers.
NOTE: Whenadjustingthe MIC LEVEL control, be carefulnot to cause
howling.
Howling isof courseunpleasantto hear,
but it canalso
damage
the VU meter
of your taperecorder
or deckduringrecording.
3. If two microphones are used,the one connectedto jack
A will broadcastover the left channel,B the right. If you
wish to use only one of thesemicrophones
at any time,
tum the unusedmicrophone levelcontrol off. Then the
microphoneused
will broadcastoverboth channels.
USING
TAPEDECKS
ANDTAPE
RECORDERS
As shown in Fig. 9, signalsheard from the speakers are
normally fed to the SX-9000 TAPE REC A and B terminals.
Whenrecording, set the SELECTOR and MODE switches
to
your program source.Refer to the sections
on Listening to
Broadcasts and Listening to Records. Recording signals
cannot be regulated by the SX-9000 VOLUME, BASS,
TREBLE and TONE COLOR switches. These must be
adjustedby the recordinglevel control on the tapedeck/tape
recorder.
NOTE: When usingmono tape recorders,
either the left channel
signal
or
the right channel signal may be recorded, but not both. The
CENTER CHANNEL terminalshould therefore
be used.
TAPE MONITOR
With 2-head and 3-head type tape recorders fitted with
monitor mechanisms,
turning the TAPE MONITOR switch
ON during recording has the following effects (if recording
and playback heads are first connected): With the 2-head
type, signalsfed to the recording head can be monitored;
with the 3-headtype, signals
can be monitored immediately
afterrecording.
(
See
Fig.
9.)
TAPE DECK B
...oIa---
...aro.--
sx-9000
10

PLAYBACK
. Turn TAPE MONITOR SWITCHA or B ON andadjustthe
VOLUME, BASS,
TREBLE andTONE COLORswitches
to
the desired
levels.
o WhenTAPE MONITOR SWITCHES A or B areturned ON,
the position of the SELECTORbecorries
immaterial.
MIXED
RECORDING
When using a microphone in mixed recording, connect the
tape deckto the PREOUT terminal andadjustthe volume of
the microphonewith the MIC LEVEL knob while listening
to
the record or broadcast.Do not turn this knob too high as
this will result in howling and may damage
the VU meterof
the tapedeck.
EDITING
RECORDING
TAPES
By using two tape decksand re-recordingonly certain parts
of a tape,you can edit old tapestaken from FM broadcasts,
etc. and obtain a brand-new tape containing only your
favoriterecordings:
1. As shown in Fig. 10, place
the old tapeor mother tapeon
TAPE DECK A and turn TAPE MONITOR SWITCH
A ON.
2. Placethe newtapeon TAPE DECK B.
3. Playback is performed on TAPE DECK A and recording
onTAPE DECK B.
By tuming TAPE MONITOR SWITCH B ON and OFF
you can monitor the recording.Besure
not to turn TAPE
MONITOR SWITCHA OFF.
YOUCANALSO
USE
YOUR
SX-gOOO
AS FOLLOWS
MULTICHANNELAMPLIFIER
SYSTEM
By using an ELECTRONIC CROSSOVER NETWORK
(PIONEER MODEL SF-700) and one or two POWER
AMPLIFIERS, you can build a high-quality multichannel
amplifier system.
a. Set the PRE & MAIN switch on the rear panel of the
SX-9000at the SEPARATED position.
b. Connect the PRE OUTPUT terminal of the SX-9000 and
the CROSSOVER NETWORK INPUT terminal. Also
connect the CROSSOVER NETWORK LOW-RANGE
OUTPUT terminal and the MAIN INPUT terminal of the
sx-g000.
c. For MID-RANGE and HIGH-RANGE a separatePOWER
AMPLIFIER mustbeused.
3.D STEREO
SYSTEM
By connectinga POWERAMPLIFIER with a low-pass
filter
of 150 - 250H2 cut-off frequency to the CENTER
CHANNEL OUTPUT terminal in the rear panel,you canset
up a 3-Dstereo
system.
sx-9000 Fig. 10
sx-9000
...oro---
oooooo
oooo

TJIONEEFI
CONDITIONS
FREQUENTLY
MISTAKEN
FOR
MALFUNCTION
Noise:Thereare
a
variety
of noises
relatingto theoperation
of a from external sourcesof nolse. Due to the inherent
high
hi-f
i unit. Theseare
generalty
divided
intotwo types;
(1)
theunit amplif
ierand reproducesextraneous
noisesintodefiniteoutput
is faulty (a transistor or part has deteriorated) and (2) an noise.lf your receivel
produces
a noise,checkaccordingtothe
external
sourceof
noiseisaddingnoiseto
theunit. following table and trace out the sourceof noise
for the
When a hi-fi unit produces
an unpleasant
noase,it is often appropriate
correctiveaction.
assumed
that the unit isfaulty, but statistical
records
indicate
that the maiorityof noises
produced
in hi-fi acoustic
unats
result
Watchfor the following
conditions;these
arealsoaptto bemistaken
for malfunction.
SVmptom Suspected
Source
of Noise Diagnosis
and
Remedy
a
o
E
o
m
o
g
o
'?
.J
q
o
!
=
Continuousor intermitten
noiselike jjjjlior zzzzzz. . Static
(lightning)
o Fluorescent lamp, motor, or thermostat
may be in use in house
or in the vicinity
of the house.
In manv cases, it is very diff icult to remove the source
of noise. In order to make the radio input largerthan
the noise level, set up a good outdoor antenna and
make a complete grounding
Whena station
istunedin,
hum is mixed in the
program.
r Poor fluorescent
lamp, motor, or electric
heatermay be in use in houseor nearthe
house.
Reversingthe line
plug
mayoccasionallyalleviatethis
noise
problem.
Usually
it isvery
difficult
to eliminate
tnenorse.
Hissingsound
noisein AM
(medium
wave) reception. I The frequency of an adjacent station is
interferingwith that of the stationbeing
tunedin (10kHz beatinterference).
o TV set ison in the samehousewith the
receiver.
lmpossibleto removesuchinterference.lf the cause
of
such noise is in the TV set. increasethe distance
between
the TV set
andreceiver.
Staticnoise
(in particular,
whenautomobiles
runclose
to thehouse).
a White noise generated
from automobile
engi
nes.
r Radiofrequency
sewing
machineor weld-
ing machine
being
usednear
your house.
In an area surroundedby hillsor highbuildings,the
FM inputsignalsareveryweak.
Thus
thenoiselimiter
in the circuit losesitsfunction.
Set
upanoutdoor
FM
antenna
havingmany reflector
elements.
Reception of FM stereo
program contains more
noise than FM mono pro-
gram.
a Note that the servicearea coveredby an
FM stereobroadcast isabout 50%of that
of aregularmono broadcast.
Increasing
FM input
signalmay alleviate
this
problem.
Usean exclusiveFM outdoor antenna
instead
of the
indoor T- tvpeantenna.
E
o
E.
o
.=
o
o
=
Hum or buzz. When
switchedto radio
reception,
the noise disappears.
a Poorconnectionof shieldedwire {a).
. Jackconnection
isloose.
(b)
o Line cord or fluorescent
lamo isnearthe
shieldedwire.
(c)
o Poor
grounding.
(d)
a Ham transmittingstationor TV transmit-
tingstationisnear
your house.
(e)
Correcr
the conditions
statedin (a),(b). (c) or (d). ln
caseof (e),
report it to anofJicialactivity.
Output tone quality is
poor
andmixedwith noise.
Trebleisnot clear.
. Stylus iswornout. (a)
. Record
is
wornout. (b)
a Dustadheres
to stvlus.
(c)
. Stylus isimproperlymounted.
(d)
a Stylus
pressure
isnot proper.
(e)
r TheTREBLE
levelis
too hiqh.
Check
(a)
through (e) andcorrect
the condation.
Lower
the
TREBLE level.
Symptom Suspected
Sourceof Noise Diagnosisand Remedy
Power is not turned on
although the power switch
rs
set
to ON.
o Fuse
blows.
(a)
. Line
plug
is
loose.
(b) Check (a)
and (b) and correct the condition.
In playing a record, in-
creasingthe volume causes
howling.
a Distancebetween the turntable and the
soeakers
is
too short.
a The place on which the turntable
or
soeakersareset
is
unstable.
Change the distance or rearrangethe installataon
increaseof the unit and speakers.
(lnstalling
the
turntableon a firm, solid stand
may alleviate
this
oroblem.)
Do not enhance
the BASS sound
level
excessavely.
TZ

SPECIFICATIONS
SEMICONDUCTORS
Audio Section
Transistors
Diodes
TunerSection
IC's
FET
Transistors
Diodes
AUDIO SECTION
Music
PowerOutput
Continuous
Power
Output (Eachchannel
driven)
Continuous
Power
Output (Both channel
driven)
HarmonicDistortion
DampingFactor
FrequencyResponse
Power
Bandwidth
Hum andNoise
Sensitivityand Impedance
(at 1kHz,continuous
power output)
Output Jacks
and
Terminals
EqualizationCurve
BASSControl
TREBLE Control
Filters
8A 150 watts total (IHF
rating)
4A 240 wattstotal
Be 62wl62w (1kHz)
4a 85w/85w (1kHz)
8O 50w
+ 50w
(lkHz)
4A 60w+ 60w
(lkHz)
Less than 0.57o (at 1kHz,
continuous
power output)
30
(at
8f2,lkHz)
l-OHzto 35kHz.
tldB
10Hzto 35kHz(IHF rating)
PHONOMAGmore
than B0dB
AUX.............morethan
100dB
PHONO
MAG (1,2)
...............2.5mV,
50kQ
AUX (1,2)
..............160mV.
50kA
TAPEMONITOR (A,B)
..............160mV.
5OkO
MICROPHONE
(A,B)
...............1.6mV,
65kO
MAIN INPUT
............500mV,
180kQ
Speakers
(A,B,C)
4 to 16 ohms
Stereo
Headphones
Jacks
(A,B)
TAPERECording
Jacks
(A,B)
TAPE REC/P.B. Connector
(DIN type)
PRE
OUTPUT 500mV.13kSl
PHONO.....RIAA
+12.5dB,
-14dB
(at50Hz)
+9dB.
-11dB
(at 10kHz)
LOW.......Cut
6dB (at 50Hz)
HIGH.....Cut
12dB
(atLOkHz)
47
11
5
t-
12
11

PIONEER
Loudness
Contour
Reverberation
TONE COLORSwitch
MlCrophone Mixing
FM TUNER
SECTION
Frequency Range
IHF Sensitivity
CaptureRatio
Selectivity
ImageRejection
Signalto Noise Ratio
Antenna Input
FM MPXSECTION
Circuit
Channel
Separation
Harmonic Distortion
AM TUNER
SECTION
Frequency Range
IHF Sensitivity
ImageRejection
Antenna Input
MISCELLANEOUS
PowerRequirements
PowerConsumption
Dimensions
(Overall)
Weight
Switchable
to ON-OFF
+12dB (at SOHz),
+7dB (at
10kHz).with VOLUME control
setat-4OdB,VOLUME
Reverberation easily control-
lable
4-positionknob for "VIVID",
"BASS",
"FLAT" and
"SOFT"
Stereo
.....through
both "A" and
"B" channels
Monophonic
.....througheither "A" or
"B" channel
87.5MHz
to 108MHz
1.6pV
(at 98MHz)
1dB(at 98MHz)
40dB (at 98MHz)
90dB (at 9BMHz)
Morethan 65dB
300ohmsbalanced
Time-switching type demodu-
lator
FM Mono-Stereo automatic
selection
40dB(at lkHz)
O.B7o
(at lkHz) 100%Mod.
525kHz to 1,605kH2
9.5rrV
78dB
(at
1,000kH2)
Built-in ferrite loopstick
antenna
110, 120, 730, 220 and 240
volts (switchable)
350
VA (310W)
MAX.
20-9176" 522mm (width)
7-518" 194mm (height)
13-9/16" 344mm (depth)
Without Package34 lb 8 oz
16.7 kg
With package
42lb 3oz L9.2kg

ALIGNMENT
INSTRUCTIONS
SECTION
terminal
of front-end
f
rom lN
SELECTOR
..,..
FM MONO
MUTING .....
..
OFF
Volume
Control
Setting: Fully Counterclockwrse
ALIGNMENT
OF FM
Disconnect
OUTPUT
Position
of Switch:
terminal
of lF unit
A
lignment
Input
Level
Dial
Setting
O
ut
Put
EquiPment
C
onnect
ions
STEPS A
dj
ust Remarks
E
qu
ipment
C
onnect
tons FrequencY iil""
Unit Adjust for maxlmum
sensitivitY
and sYmme'
trical characteristics
Sweep
Generator
lN terminal
of lF unit
10.7MHz 40dB O
scilloscope
,4-h
\9
termrnal Check sYmmetrY
of curve
280dB
MIF niI 4.7
FF in detector clrcu
O
scilloscoPe
OUT terminat
3Remove electrolytlc caf'acitor C
rz (ol
T+ of
lF Unit
Adjust the Primary
core
of Ta so that slope
of
straight Portion
of : S"
curve will become the
steepest
and
adjust the
secondarY
core so that
the center of : S" curve
will coincide
with the
center of the marker'
A
SweeP
Generator I I
lN terminal | 10
TMHZ I
of lF unit I
I
connect OUTPUT terminal
of front-e
40dB
nd to lN terminal of lF unit __------..-
lAdiust for maxrmum
lsensitivitY and sYmme
I trical characteristics
5
Sweep Generator 10.7MHz
Point
of
no Inter-
ference
as
near as
88MHz
O
scilloscope
@
term
inal
Tz oI
front-end
640dB
Check symmetry of curve I OF
--
TP of F
ront O
scil
loscope
OUT terminal
Tq of
lF Unit
sim
ilarlY
8end
capacitor C t, \
4.7
ltF )-- ^;--1
;"tsq- -]Adjust for maxlmum
deflection
9
10
Connect electrolY
trc
Gtl-;;l ,.." 90MHz O
scil
loscoPe
'.](+ooH
f:: CT
+ of
front-end
1l termrnal lr11iI our
t
I
Lr.
rl, I
| : OT
front
-end Adjust to( maxlmum
deflection
I2
FM Antenna
terminal
Repeat
STEPS
j 1
o6MHz
L3 and
14 several
l
0dB
(400H
30,,/o
)IO6MHz
I OscilloscoPe
] VTVM
OUT termtnat
i3
Qf', CTz,
CT: of
front-end
l4
limes
15

PIONEEFI
ALIGNMENT OF MPX
Position
of Switch:
Volume
Control Settino
Input Signal
:
SECTION
SELECTOR
... FM AUTO
MUTING
...
OFF
Fully Counterclockwise
Main ( L+ R) 40 .5KHz Deviation (.60,)o
)
l9KHz Pilot 7.5KHz
Deviation (IO%)
STEPS Circuitto be Connect A
Ii
gnment
adjusted Connections Signal R
emarks
+ --
-'- l
1
2
MPXSG to trM
Separation Antenna
terminal
Sub AC VTVI\4
(L
-R)
XLL
terminal
LorR LorR
for maximum
deflection
Adjust for minimum
deflection
of
other channel.
VRr
ALIGNMENT OF AM SECTION
*
VTVM andoscilloscopeshould
beconnected
in
parallel
at theoutput.
Position
of Switch: SELECTOR..................MW
Volume
Control Setting: Fully
Counterclockwrse
I
Adlust I n
emart<s
AIignment
Adjust for maximum
sensitivity
andsymmet
rical characteristics.
Input
TLPS Lqu,pment I I .:',::" .i,liLt.,
connectrons l requency
Point of no
, Sweep
Generator ] interference ^ vrVM
t 455kHz 6OdB i - - -- Oscilloscope
12 ':^:":;;' 8
2 Signal
Generator 60OkHz 600kHz VTVIM
Antenna
Terminal 30dB Oscilloscope
^ Tnrougn
dummy 8
3 l il4ookHz
i I 14o0kHz
4 Repeat steps 2 and 3 several times.
S
T3
T4
T5
Adjust for maximum
defrection
600kHz
I60OkHz Adjust for
deflection. maxrmum
SignalGenerator
Antenna
Terminal
through
dummy

PARTS
LAVOUT
ToP vlEw L2142-024
DIALCORD
STRINGING
FM TUNING CAPACITOR
,7
2lurn AM TUNTNG
cApActroR
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TUNING SHAFT
2200
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VC304
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\.i\ \
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ot\
, LuS
\\"
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REVERBERATION CONTROL
2 turn

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PRINTED
CIRCUIT
BOARDS