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OPERATING INSTRUCTIONS KU
STEREO TUNER
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IMPORTANT NOTICE
The serial number for this equipment is located on the
rear panel. Please write this serial number on your
enclosed warranty card and keep in a secure area.
This is for your security.
WARNING: TO PREVENT FIRE OR
SHOCK HAZARD, DO NOT EXPOSE
THIS APPLIANCE TO RAIN OR MOI.
STURE.
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SAFETY INSTRUCTIONS
READ INSTRUCTIONS - All the safety and operating instructions
should be read before the appliance is operated.
RETAIN INSTRUCTIONS - The operating ;nstructions should be
retained for future reference.
HEED WARNING - All warnings on the appliance and in the
operating instructions should be adhered to.
FOLLOW INSTRUCTIONS - All operating and use instructions
should be followed.
WATER AND MOISTURE - The appliance should not be used near
water - for example, near a bathtub, washbowl, kitchen sink,
laundry tub,in a wet basement, or near a swimming pool, etc.
CARTS AND STANDS - The appliance should be used only with
a stereo rack that is recommended by Pioneer.
LOCATION - The appliance should be installed in a stable location.
WALL OR CEILING MOUNTING * The appliance should not be
mounted to a wall or ceiling.
VENTILATION - The appliance should be situated so that its
location or position does not interfere with its proper ventilation.
For example, the appliance should not be situated on a bed, sofa,
rug, or similar surface that may block the ventilation openings;or,
placed in a built-in installation, such as a bookcase or cabinet that
may impede the f low of air through the ventilation openings.
HEAT - The appliance should be situated away from heat sources
such as radiators, heat registers, stoves, or other appliances
(lncluding amplifiers) that produce heat.
POWER SOURCES - The appliance should be connected to a
power supply only of the type described in the operating instruc-
tions or as marked on the appliance.
POWER CORD PROTECTION - Power-supply cords should be
routed so that they are not likely to be walked on or pinched by
items placed upon or against them, paying particular attention to
cords at plugs, convenience receptacles, and the point where they
exit from the appliance.
CLEANING - The appliance should be cleaned only with a polish-
ing cloth or a soft dry cloth. Never clean with furniture wax,
benzine, insecticides or other volatile liquids since they may cor-
rode the cabinet.
POWER LINES - An outdoor antenna should be located away from
power lines.
NONUSE PERIODS - The power cord of the appliance should be
unplugged from the outlet when left unused for a long period of
time.
OBJECT AND LIOUID ENTRY - Care should be taken so that
objects do not fall and liquids are not spilled into the enclosure
through openings.
DAMAGE REOUIRING SERVICE - The appliance should be
serviced by Pioneer authorized service center or qualified service
personnel when:
. The power-supply cord or the plug has been damaged; or
. Ob.iects have fallen, or liquid has been spilled into the appli-
ance; or
o The appliance has been exposed to rain; or
o The appliance does not appear to operate normally or exhibits
a marked change in performance; or
. The appliance has been dropped, or the enclosure damaged.
SERVICING - The user should not attempt to service the appliance
beyond that described in the operating instructions. All other
servicing should be contact nearest Pioneer authorized service
ce nte r-
OUTDOOR ANTENNA GROUNDING - lf an outside antenna is
connected to the antenna terminal, be sure the antenna system is
grounded so as to provide some protection against voltage surges
and built up static charges. Section 810 of the National Electrical
Code, ANSI/NEPA No. 70-1978, provides information with re-
spect to proper grounding of the mast and supporting structure,
grounding of the lead-in wire to an antenna discharge unit, size of
grounding conductors, location of antenna-discharge unit, con-
nection to grounding electrodes, and requirements for the ground-
ing electrode. See Fig. A.
EXAMPLE OF ANTENNA GROUNDING AS
PER NATIONAL ELECTRICAL CODE INSTRUCTIONS
a), b)
Mast
ground
wire To Antenna terminal
Ground clamps
Grounding electrode
driven 8'into the earth
(2.44 meters)
Fis. A
a) Use No. 10 AWG copper or No.8 AWG aluminum or No. 17
AWG copper-clad steel or bronze wire, or larger as ground
wires for both mast and lead-in.
Secure lead-in wire from anlenna to antenna discharge unit and
mast ground wire to house with stand{ff insulators, spaced
from 4 feet (1.22 meters) to 6 feet ( 1.83 meters) apart.
Mount antenna discharge unit as closely as possible to where
lead-in enters house.
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b)
c)
2
TJIONEER
CONTENTS
Specifications....
Rear Panel Facilities
Antenna and Ground Connections
3
4
4
FrontPanel Facilities ...6
ListeningtoBroadcasts ...6
Troubleshooting... .....8
SPECIFICATIONS
Semiconductors
lCs. . .
FET..
Trans isto rs
Diodes
FM Tuner Section
Usable Sensitivity
50dB Ouieting Sensitivity
MONO
STE R EO
Signal-to-Noise Ratio (at 85dBf)
MONO
STEREO
Distortion (at 65dBf )
MONO lkHz .
STEREO lkHz .
Capture Ratio .
Alternate Channel Selectivity
400kHz
Stereo Separation
lkHz .
Frequency Response
Spurious Response Ratio . . . . .
lmage Response Ratio
lF Response Ratio .
AM Suppression Ratio
SubcarrierProduct Ratio . . . . .
SCA Rejection Ratio
Muting Threshold
Antenna lnput .
5
1
5
15
10.3dBf (1.8pV)
15.8dBf (3.4pV)
38.3dBf (4SpV)
8ftB
82dB
0.08%
0.15%
1.0d8
60dB
40dB
2oHzto 1skHz:? 3 dB
70dB
60dB
90dB
60dB
60dB
60dB
17.2dBt (4.0pV)
300 ohms balanced,
75 ohms unbalanced
AM Tuner Section
Sensitivity
(lHF, ferrite antenna)
(lHF, ext. antenna)
Selectivity
Signal-to-Noise Ratio
lmage Response Ratio
lF Response Ratio .
Antenna
Audio Section
Output ( Level/l mpedance)
FM (100% MOD) .
AM (30% MOD) .
Miscellaneous
Power Requirements
Power Consumption
Dimensions
Weight (without package) . . . . .
Furnished Parts
Operating instructions
FM T-type antenna
NOTE:
Specifications and the design subject to possible modifications
without notice due to improvements.
300pV/m
1 5pV
3ft8
50dB
40dB
40dB
Ferrite loopstick antenna
650mV/1kSl
150mV/1kO
AC 12OV,6OHZ
17W (UL}
420(W) x 94(H)
x 262(D) mm
16-9/16(W) x 3-1 1/16(H)
x 10-5/16(D) in
3.6kg (7 lb 15 oz)
1
1
REAR PANEL FACILITIES
E FM ANTENNA INPUT TERMINALS FoR
3OO-OHM TWINLEAD FEEDER
Connect a 300-ohm twinlead feeder to these terminals
when using it as the feeder from the FM antenna. Use
these terminals when connecting the accessory T-type FM
anten na.
@ FM ANTENNA INPUT TERMINALS FOR
75-OHM COAXIAL CABLE
Connect a 75-ohm coaxial cable to these terminals when
using it as the feeder from the FM antenna.
@ cNo TERMTNAL
This is the ground terminal. From aspects of both safety
and reduced noise, connect a ground lead to this terminal.
Refer to Fig. 3 on page 5.
@ NTVI ANTENNA INPUT TERMINAL
When using an external AM antenna, connect it to this
term inal .
@ ourpur coRD
Connect these cords to tuner input jacks on your ampli-
fier (white plug for left channel and red for right channel).
making sure that the power to the stereo system is switch-
ed off before hand. When connecting these to the inputs
of a stereo amplif ier, first check the color of the plugs and
then connect f irmly.
@ poweR coRD
This is plugged into a household AC power outlet or into
an auxiliary outlet on another stereo component.
Connecting the 75-ohm
coaxial cable
FM outdoor antenna
75-ohm coaxial cable
ANTENNA AND GROUND CONNECTIONS
FM ANTENNAS
There are two methods you can use when connecting the
FM antenna to the antenna input terminals: you can use
a 300-ohm twinlead feeder or a 75-ohm coaxial cable.
Pioneer recommends the 75-ohm coaxial cable (RG59U,
etc.) if you want your tuner to display its capabilities to the
full. The coaxial cable is more effective than the twinlead
feeder in safeguarding against external interference noise
from impairing the sound quality. ln other words. twinlead
feeders are liable to pick up external noise, and this iswhy
they are not recommended.
CONNECTIONS USING A 75-OHM COAXIAL
CABLE
Refer to Fig. 1 and follow the procedure. Prepare the tip
of the coaxial cable and connect it to the antenna input
terminals (75Sr-UNBAL).
EH:rh
Unit: mm {GND
7S-ohm terminals
CONNECTIONS USING A 3OO-OHM TWINLEAD
FEEDER
ln cases where it is only possible to use a twinlead feeder
with a community receiving system antenna, refer to Fig. 2
and follow the procedure. Prepare the ends of the twinlead
feeder and attach them to the 300S2-BAL antenna input
terminals. Then make the twinlead feeder as short as
possible but do not bundle the wires or run them loose on
the floor.
ACCESSORY T.TYPE ANTENNA
Th is antenna is designed to allow you to receive FM
programs in areas where strong signals are beamed by
broadcasting stations until you install your FM antenna.
As shown in Fig.2, atlach the antenna to the 300Q-BAL
antenna input terminals and then tune into an FM station.
following the instructions listed under "LISTENING TO
BROADCASTS" on page 6. Extend both ends of the
antenna horizontally, locate the optimum receiving location
by moving the antenna to the left or right, or up or down,
and then secure it to the ceiling or wall.
AM ANTENNA
This tuner is provided with a ferrite bar antenna inside.
lf reception is not satisfactory when AM programs are
received, change the direction of the tuner (and this will
change the direction of the inside bar antenna).
To achieve optimum reception, connect an AM antenna as
follows.
Indoor AM antenna
Provide yourself with a vinyl-covered wire (5 - 6 m),
attach one end to the AM terminal and the other end to a
wall or other high location.
Outdoor AM antenna
lf reception is still poor even when the indoor lead wire is
extended, stretch a vinyl-covered wire outdoors as in
Fis.3.
GROUND
Stations can be picked up without grounding the tuner.
However, it is a good idea to connect the ground wire to
the GN D terminal in the interest of saf ety and noise
suppress ion.
NOTE:
Do not connect the ground wire to a gas pipe since this is danger-
ous.
T-type FM antenna
l-------l
rJIONEER
Fis.3
FM antenna
300-ohm
term i nals l- tg
Outdoor Alvl antenna
Connecting the twinlead feeder
lndoor AM antenna
(vinyl insulated wire)
5
FRONT PANEL FACILITIES
E PoWER SWITcH
Set this switch to ON to supply power to the tuner.
@ FUNCTTON INDTCATORS
These indicator light up in accordance with the position
of the function switch.
@ srcrunl tNDrcAToR
This indicator lights in sequence from 1 through 5 during
the tuning of an AM or FM broadcast in accordance with
the strength of the signals being received. The optimum
tuning point is where the maximum number of indicators
light.
@ FM STEREO INDICATOR
This indicator lights up when the tuner is receiving a
stereo program if the FM muting/mode switch is set to
oN.
€) TUNING METER
This tuning meter also acts as a dial pointer during the
tuning of AM and FM broadcast stations. The optimum
tuning point is indicated regardless of the strength of the
signals. When a program is not being received, the pointer
is positioned in the center. When tuning in a station, the
pointer deflects to the left or right, and perfect tuning
is indicated when the pointer is positioned in the center.
LISTENING TO BROADCASTS
1 . Set the power switch to ON.
2. Select the function switch according to the band of the
station whose program you want to hear.
3. Set the FM muting/mode switch to ON.
4. Turn up the volume control on the stereo amplifier a
little.
5. Turn the tuning knob to select the desired station.
(RefeT to ,,HOW THE TUNING METER AND STA-
@ FUNCTION SWITCH
This switch is used to select the type of broadcasting
waves.
FM For reception of FM broadcasting
AM For reception of AM broadcasting
€) FM MUTING/MODE SWITCH
When this switch is set to ON, unpleasant interstation
noise is eliminated, which makes selection of stations
easier. However, if the muting switch is set to ON in areas
where the field strength is extremely weak, the station
being received may also disappear. ln such areas. there-
fore. the muting switch should be turned OFF (MONO) .
When this switch is set to OFF (MONO), monaural
reception will be obtained even though the station is
broadcasting a stereo program.
@ RECORDING LEVEL CHECK SWITCH
Set this switch to OFF for normal FM reception and to
ON for a recording reference level used for FM broadcasts.
Refer to "RECORDING LEVEL CHECK SWITCH" on
next page.
€) TUNING KNOB
This knob is used f or selecting station. Observe the tuning
meter and signal indicators, and set the tuning knob to the
optimum tuning point when aligning the target broadcast
station.
TION INDICATORS WORK" on next page).
o The FM stereo indicator lights up with an FM stereo
broadcast.
o ln order to listen to weak-signal FM stations, set the FM
muting/mode switch to the OFF (MONO) position and
re-tu ne.
6. Adjust the volume with the volume control on the stereo
amplif ier.
I
PIONEER
HOW THE TUNING METER AND SIGNAL INDICATOR WORK
This tuning meter operates on center tuning principles.
The pointer works in the same way for both AM and FM
recept io n .
When the pointer deflects
to the left. When the pointer def lects
to the right
This means that the station
is near.
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to the right. \_/
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96 ga 10o
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rThe pointer is positioned in the
center when the tuner is not
receiving a broadcast.
. When the pointer is brought
near a spot on the scale where
there is a station, it will deflect
as shown in the figures on the
left or right.
. When the pointer is positioned
in the center and the maximum
number of signal indicators
light, this indicates the optimum
tuning point.
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lndicators 1 through 5light
in line with the strength of
the signals being received.
This means that the station
is near.
Rotate the A
tuningknob I n " )
totheleft. V
I
DING LEVEL CHECK SWITC
The recording level must be set correctly for good quality
FM broadcast. However, this is not easy since the output
level is fluctuating allthe time.
By setting the recording level check switch to ON, it is
possible to make available an approximately 330H2
reference signal at a level which is equivalent to a 50%
FM modulation. This means that it is possible to set the
recording level optimally, irrespective of the program being
received.
Setting the recording level
1. Connect the tape deck.
2. Set the tape deck to the recording standby mode.
3. Set the function switch to FM.
4. Set the recording level check switch to ON, and 330H2
signals will now be fed out to the OUTPUT.
5. Adjust the recording level of the tape deck so that the
recording level meter pointers deflect with in the
following ranges:
. 0 to +2dB with an open-reel deck
o About -2dB with a cassette deck
6. Tune in to the desired FM station and start recording
after setting the recording level check switch to OFF.
The output level of the signals is the same for both left and
right channels, and so these signals can be used as reference
signals to adjust the left/right channel volume balance of a
stereo system connected to the OUTPUT.
l
r,IONEER
TROU BLESHOOTING
Sometimes an operational fault can be mistaken for a malfunction or failure. Check the following points and see if the
symptoms of the trouble are outlined below before you get in touch with the serviceman. lf you cannot locate the symptoms,
turn off the power and contact your nearest Pioneer Service Center, Service Station of authorized Pioneer dealer.
Symptom Possible trouble and Remedy
No power even when POWER
switch is set to ON.
No sound
lntermittent noise
Sound is distorted
Stereo reception is not obtained
Power plug is not connected
to the power outlet.
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Connect the plug to the outlet.
One or both output cords
have worked free.
Connect the jacks securely
The antenna is not pointing
in the riqht direction and the
tuner is not performing to
the best of its ability.
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Point the FM antenna pro-
perly in the direction of the
transmitting antenna.
Tuning is not satisfactory
and the tuner is not there-
fore performing to the best
of its ability.
Refer to the section on "Lis-
tening to Broadcasts" and
adjust the tuning knob to
the optimum tuning point.
The muting switch is set to
OFF (MONO}.
The antenna connecting
leads have worked free.
Connect f irmly to the termi
nals.
The FM antenna is not point.
ing in the right direction and
it is being affected by the
multipath phenomenon.
lf the tuner is being used
near equipment generating a
great deal of noise, separate
it f rom the equipment.
The signals being picked up
are weak and so the muting
circuit has been activated
and no sound is heard.
lnstall a highly sensitive
antenna outdoors or set the
muting switch to OFF.
The antenna has not been
connected properly and so
the sensitivity is poor and
the tuner is picking up inter-
ference.
Connect f irmly to the termi-
nals.
+
-
Point the FM antenna pro-
perly in the direction of the
transmitting antenna.
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Set this switch to ON
PIONEEFI ELEGTFICINIC CCTFIPOFIATICIN 4-.1 ,Mesuno'1-chome,Meguno-ku,Tokyo 1s3,Japan
I'J.5. FICINEEFI ELECTFICINIGS COFIPCIFIATION 85 Oxfond Dnive, Moonachie, New Jersey O7O74, U.S.A.
PICINEEFI ELECTFICTNIC IEUFICIPE! N.V. Luithagen-Haven g, 2O3O Anrwenp, Eletgiurn
PIONEEFI ELECTFEIUICA AUEiTRALTA PTY. LTEI. 178-1A4 Eoundany Fload, Bnaeside, Vicronia 39S, Ausrnatia
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