Yamaha T-80 OWNER'S MANUAL

 CONTENTS =
CAUTION: READ THIS BEFORE OPERATING YQUR T-80:
CONNECTION DIAGRAM Lu iii 3
CONNECTIONS ocr, 4 a
FRONT PANEL PARTS AND FUNCTIONS mur aia ai BE | Theserial numberislocated on therearofthechassis. -..
MULTIPATH INTERFERENCE .......... | | 7 ; | | | Retain this Owner s Manual in a safe place for future reference.
, | | |
9
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RECEIVING FM/AM BROADCASTS ee
SPECIFICATIONS Loire
TROUBLESHOOTING oceans À
WARNING
To prevent fire or shock hazard, do no expose this appliance to rain or maisture, |
CAUTION (PREPARED IN ACCORDANCE WITH UL STANDARD 1270)
1 Read Instructions — All the safety and operating instructions
should be read before the appliance is operated.
— Retain instructions — The safety and operating instructions
should be retained for future reference.
3 Heed Warnings — All warnings on the appliance and in the
operating instructions should be adhered to.
Zl Follow Instructions — All operating and other instructions
should be fo lowed.
=> 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.
6 Carts and Stands — The appliance should be used only with
a cart or stand that is recommended by the manufacturer.
/ Wall or Ceiling Mounting — The appliance should be mounted
to a wall or ceiling only as recommended by the manufacturer.
= Ventilation — The appliance should be situated so that its
location or pasition 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 hookcase or cabinet that may
impede the flow of air through the ventilation openings.
9 Heat — The appliance should be situated away from heat
sources such as radiators, stoves, or other appliances that
produce heat.
1 e Power Sources — The appliance should be connected to
a power supply only of the type described in the operating
instructions or as marked on the appliance.
1 1 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.
1 = Cleaning — The appliance should be cleaned only as
recommended by the manufacturer.
1 3 Nonuse Periods — The power cord of the appliance
should be unplugged from the outlet when left unused for a long
period of time.
1 Zl Object and Liquid Entry — Care should be taken so that
objects do not fall into and liquids not spilled into the inside of the
appliance.
1 — Damage Requiring Service — The appliance should be
serviced by qualified service personnel when:
A. The power-supply cord or the plug has been damaged; or
~ B. Objects have fallen, or liquid has been spilled, into the
appliance; or
C. The appliance has been exposed to rain; or
D. The appliance does not appear to operate normally or exhibits
a marked change in performance; or
E. The appliance has been dropped, or the cabinet damaged.
7 (2) Servicing — The user should not attempt to service the
appliance beyond those means described in the operating
instructions. All other servicing should be referred to qualified
service personnel.
1 у Power Lines — An outdoor antenna should be located
away from power lines.
1 = Outdoor Antenna Grounding — If an outside antenna is
connected to the tuner, 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/NFPA No. 70 — 1981, provides information with respect 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, connection to
grounding electrodes, and requirements for the grounding elec-
trode.
EXAMPLE OF ANTENNA GROUNDING
AS PER NATIONAL ELECTRICAL CODE
. INSTRUCTIONS
Ground
Antenna
Lead-in Wire
Mast —
Antenna To
Discharge — Tuner or Receiver
Ground Unit с
Wire Ground
a,b wire #9
Ground
Clamps
| Grounding
—_—l Electrode Driven
SBR1682 1 8" Into the Earth
u (2.44 Meters)
a. Use No. 10 AWG (5.3 mm?) copper, No. 8 AWG (8.4 mm?)
aluminium, No. 17 AWG (1.0 mm?) copper-clad steel or
bronze wire, or larger, as ground wire.
b. Secure antenna lead-in and ground wire to house with
stand-off insulators spaced from 4 feet (1.22 meters) to 6 |
feet (1.83 meters) apart.
c. Mount antenna discharge unit as closely as possible to
where lead-in enters house. |
D0 NOT OPEN
CAUTION: TC REDUCE THE RISK OF ELECTRIC SHOCK,
DC NOT REMOVE COVER (OR BACK) NO USER-
SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
e Explanation of Graphical Symbols
The lightning flash with arrowhead symbol,
within an equilateral triangle, is intended to
alert you to the presence of uninsulated
“dangerous voltage” within the product's
enclosure that may be of sufficient
magnitude to constitute a risk of electric
shock to persons.
The exclamation point within an equilateral
triangle is intended to alert you to the
presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the appliance.
The 1-80 is a sophisticated AM/FM stereo tuner. To ensure proper
operation for the best possible sound reproduction, please read
this manual carefully.
Choose the installation location of your T-80 carefully. Avoid
placing itin direct sunlight or close to a source of heat. Also avoid
locations subject to vibration and excessive dust, heat, cold or
moisture.
3
Do not open the cabinet as this might result in damage to the set, or
electrical shock. If a foreign object should get into the set, contact
your dealer. |
A
To prevent lightning damage, pull out the power cord and remove
the antenna cable during an electrical storm.
D
When removing the power plug from the wall outlet, always pull
directly on the plug; never yank the cord.
6
Do not use force when using the switches or knobs.
When moving the set be sure to first pull out the power plug and
remove cords connecting to other equipment.
E
Do not attempt to clean the T-80 with chemical solvents as this
might damage the finish. Use a clean, dry cloth.
_
Be sure to read the “troubleshooting” section for advice on
common operating errors before concluding that your T-80 is faulty.
10
Keep this manual in a safe place for future reference.
Be sure to turn the power OFF before making connections, and connect the left (L) and right (R) channels consistently from
component to component.
Outdoor FM antenna FM T-type antenna Control amplifier or preamplifier
wn | YAMAHA ik ame BC
| AM antenna lead: if reception is poor |
| with the loop antenna, runa5 — 10}
| meter insulated wire outdoors.
Connect either an
indoor FM T-type |
antenna or an
outdoor FM Tuner output terminals (HIGH, LOW) Connect the output
antenna but not ; The tuner output level can be selected: cords to the ampiifier's
Direction of both. ' : At HIGH, the output level is high (FM: Tuner jacks.
broadcasting ; | 1\/2 КО). and at LOW it is lower (FM:
station ; | | 0.5V/2.5 kQ). Depending upon the input
Flat twin-lead wire | sensitivity of the connected amplifier and
(300) i | the output level of other connected
A E equipment, select the closer: HIGH or
! LOW. The usual connection is to LOW.
T-80 rear panel É
Notes on connections
e Plug all cords in firmly. If the
© connections are not secure,
ET there may be no audio out-
upon cakm co. 0. | © put or there may be noise.
MACE eN JAPAN ® [Do not coil up excess wire
on the floor. Also, do not
GARMIN. co racer не са зноя bundie with cords from
WALID DO ROT EXPOSE Is APPLIANCE 10 { other system components.
fi MODEL SO
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8
Connect the AM loop antenna pro-
vided (in the accessories envelope).
it may be detached from its bracket if
E desired and placed at a distance
: from the set.
Coaxial cable
(75Q)
A ground lead is not necessary for normal reception, but | Connect to an AC power
from the point of view of safety and reduced interfer- outiet or to the amplifier's
ence, grounding is desirable. Connect a heavy wire to a auxiliary power outlet.
cold water pipe or a grounding rod driven solidly into the
earth.
B CONNECTING THE FM ANTENNA
Choose an FM antenna that is appropriate to the local reception
conditions, taking into consideration the distance from the broad-
cast statior and possible interfering objects such as surrounding
tall buildings. In locations where there is a strong signal from a local
station, a portable T-type antenna is usually adequate. Connect the
feeder wire to the 300Q terminal, pull the wire tight, and turn to
obtain optimum reception while watching the SIGNAL QUALITY/
MULTIPATH meter. Attach the antenna to a suitable support such
as a wall.
In all but the best reception conditions, an outdoor FM antenna is
necessary “or best results. Either 3009 flat twin-lead wire or 75Q
coaxial cable may be used. In locations where electrical interter-
ence is a problem, coaxial cable is preferable.
Outdoor FM antenna
pr FM ANT AM ANT ——
750 UNBAL 3000 BAL
Direction
of broad-
casting
stations
With 750
coaxial
cable
А
|
Mag vacio mr mens omen wm wy am ons aww
With 300Q
flat twin-lead
Find the optimum
FM T-type antenna
reception.
J
J) Do not bring
other cords close
tothe feeder.
FM AM
75, LIFE AL
Attaching the plug to the
coaxial cable
“Insert the center
conductor
o Plug section
Shield holder
Center conductor: ——
Shield -
Quter jacket —-
Coaxial cable ——fi
(1) Remove the outer-covering
of the coaxial cable up 16 about
“ 23 mm from the end, and slide
the tightening sleeve over the
cable. Insert the center
conductor of the coaxial cable
into its hole in the plug section,
place the shield into the shield
holder and push in.
(2) Screw on the tightening
sleeve.
®@ CONNECTING THE AM ANTENNA —
In many cases it will be possible to get excellent AM reception with
the provided AM loop antenna. Attach the antenna leads to the
GND and AM ANT terminals, and rotate the antenna in its bracket
for best reception while watching the SIGNAL QUALITY/MULTI-
PATH meter. The loop antenna may also be removed and hung on
the wall.
lí necessary, an outdoor antenna may be used for improved AM
reception. Connect a 5 — 10 meter length of insulated wire to the
AM ANT terminal and run it outdoors.
The loop antenna may also be
removed and hung on the wall.
1. Clip to rear panel.
2. Try changing the direction
of the loop antenna.
B CONNECTING THE AMPLIFIER
Use the cable supplied to connect from the output jacks to the tuner
input jacks of your amplifier, being sure to observe the left and right
channel markings. Also make sure that the connections are secure
and that the connecting cable is not bundied with the speaker
leads or power cord from the amplifier.
NATURAL SOLIND AM /FM
Q POWER SWITCH
€ STATION INDICATIÓN PAÑEL
When a preset button is pressed, the color of the corresponding
indicator changes from red to yellow.
During presetting, the indicator of the button pressed last will
alternately flash red and yellow.
@ PRESET BUTTONS
A total (FM + AM) of 10 broadcast stations can be preset. They are
preset to include the settings of the FILTER switch, FM ATT switch”
RX MODE switch*, and TUNING MODE switch (including FINE
TUNING). Thereafter any station can be tuned to (in that preset
mode) by one touch of the preset bution.
In addition, preset button P1 also includes the initial station
function, so that the broadcast station preset to that button can be
tuned by simply switching on the power by the POWER ON mode
switch on the rear panel.
* The FM ATT switch and the RX MODE switch are effective
during FM reception only.
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; ETATIOR FREGUENCY
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“DEF
@ FREQUENCY INDICATOR
e FM stereo indicator
This indicator illuminates only during FM stereo broadcasts, and
not during monaural broadcasts. It also does not illuminate, even
during a stereo broadcast, if the TUNING MODE switch is at the
MANUAL/MONO position.
® Fine tuning indicator
Indicates that the tuning mode is fine tuning. The indication is up to
0.01 MHz for FM reception.
© SIGNAL QUALITY/MULTIPATH METER
Indicates the quality of signals being received at the tuner.
It also can be used to indicate the detection of multipath
interference during reception of FM broadcasts by setting the
switch to MULTIPATH (indicator iluminates).
© RECORD-CALIBRATION SWITCH
When this switch is ON (indicator illuminates), a 333-Hz signal
(corresponding to 50% FM modulation} is output. Adjust so that the
indication of the tape deck’s level meter is -6 VU to 0 VU.*
* This switch has operational priority over all other switches.
* Refer to the tape deck’s operation instructions, because-the
recording level varies according to the type of tape used.
@ METER SWITCH
This switch functions only during reception of FM broadcasts.
When itis set to MULTIPATH, the SIGNAL QUALITY/MULTIPATH
meter will function as a multipath interference detection meter
(MULTIPATH indicator illuminates).
When the switch is pressed once again, the meter will once again
function as the signal quality meter.
O FILTER SWITCH
e During FM... This switch functions as an FM noise-reduction
switch. If noise is excessive, set to ON (indicator illuminates).
Noise in stereo and monaural broadcasts can be reduced,
e During AM ... This switch functions as an AM emphasis switch.
Reception conditions can be improved by setting to ON
(indicator iluminates) during reception of pre-emphasized
broadcasts, distant broadcasts, weak broadcasts, or broad-
casts which are near the frequency of another broadcast.
To receive broadcasts which are not pre-emphasized and which
have good reception, set this switch to OFF for optimum,
wide-range reception.
* Note that the displayed value shown by the signal quality meter
changes slightly as a resuit of ON/OFF switching of AM
emphasis.
E) FM ATTENUATOR SWITCH
When this switch is ON (indicator illuminates) during FM reception,
the antenna input can be attenuated by about 10 dB. This is
effective in the following conditions. |
1) If, during reception in the LOCAL mode, the signal quality meter
reading is full scale, even with the FM ATT ON.
2) Reception conditions may be improved during reception of
weak or medium-strength broadcasts, if there is a strong-signal
broadcast on a nearly frequency, by receiving in the FM ATT
ON condition. |
3) Ifthere is interference {radio interference, beat signals, etc.)
caused by intermodulation, interference signals, etc...
Select the best position (ON or OFF).
Otherwise, the OFF position is suggested. Note, however, that
automatic search tuning will be faster if this switch is set to ON,
especially if there are many broadcast stations, because the
weak broadcast station will be by-passed. After completion of
the tuning, however, the switch should once again be set to
OFF,
ED) AX MODE SWITCH
This switch is effective for improved reception of distant stations or
noisy stations during FM reception.
Each time the switch is pressed, it changes in order from AUTO DX
to compulsory DX to compulsory LOCAL, as indicated by the
indicator.
® AUTO DX
When interference is not strong, the wide-range LOCAL mode is
used for reception, but when the signal is weak or there is
interference, there is an automatic switchover to the highly selective
DX mode so that reception noise can be lessened.
There is no automatic return to the LOCAL mode even if the
reception conditions improve. Either the broadcast should be
detuned, or this switch should be pressed to the LOCAL position.
® Compulsory DX | |
Set to this mode to receive a distant broadcast station or if the
broadcast signal becomes weak.
® Compulsory LOCAL
Set to this position if broadcast signals are strong and there is little
interference, or if you wish to receive only strong-signal broadcast
stations. |
* The suggested usual setting is the AUTO DX mode.
TUNING MODE SWITCH
® AUTO position (indicator illuminates)
Tuning will automatically stop at a tuned frequency when the
TUNING button is used for tuning. (This is automatic search tuning.)
Moreover, the muting circuit functions to eliminate between-station
noise during FM tuning.
In addition, stereo broadcasts are automatically tuned.
e MANUAL/MONO |
When the TUNING button is pressed intermittently, the frequency is
changed in 0.1-MHz (FM) or 10-kHz (AM) steps. (If the button is
pressed continuously, the frequency is changed continucusly in
these gradual steps.)
Use the MANUAL setting when tuning is not satisfactory at the
AUTO position because the station is distant or reception condi-
tions are poor. |
Note that, at this position, all FM broadcasts will be heard
monaurally, {Automatic stereo reception is by switching to AUTO
after tuning is completed.)
* Because the stereo operation level of this model is set to a low
level, tuning of very weak signals can be improved by tuning
manually.
The setting of the FILTER, FM ATT, RX MODE and TUNING MODE
(FINE TUNING) switches can of course be programmed into the
memory ofthe P1 — P10 preset buttons, and the initial station and
last station can be recalled.
Usual settings are:
FILTER and FM ATT switches ... CFF
RX MODE and TUNING MODE switches ... AUTO
In this way, programmable functions can be entered into the preset
button memories in the best condition.
@ TUNING BUTTON
The frequency displayed by the frequency indicator will become
lower when the DOWN side is pressed, and higher when the UP
side is pressed. |
Tuning wilt be automatic search or manual depending upon the
setting of the TUNING MODE switch.
® FINE TUNING BUTTON
When this button is pressed, the words “FINE TUNING” will
illuminate in the frequency indicator, and the FM frequency will be
displayed to a precision of 0.01 MHz (= 10 kHz). Thus, FM tuning to
a precision of 0.01 MHz is possible when the FINE TUNING button
is pressed intermittently. For AM, 1-kHz step tuning will be
possibie. (The frequency can be continuously changed in steps of
this width if the button is pressed continuously.) This button, then,
can be used for even more precise tuning.
O MEMORY BUTTON
This button is used to program the frequency to the preset buttons.
When it is pressed, the indicator illuminates for about 4 seconds.
During that time, the reception frequency and each mode will be
simultaneously programmed into whichever of the preset buttons
(P1-P10) is pressed.
(GB BAND SELECTOR
To select FM or AM reception.
* The most recently tuned broadcast station on the AM (FM)
band will be received when the band is changed from FM to AM
(AM to FM).
FM multipath reception is, inthe same way as TV “ghosts”,
caused by the reception of the same signal (one directly from
the broadcast station, and one indirectly very slightly afterward
because it is reflected from a nearby building, mountains, etc.)
as two signals, resulting in a worsened S/N ratio of the sound.
To avoid this problem, an antenna with highly directional
character stics should be used, and its height and direction
should be planned to prevent multi-path reception as much as
possible |
The SIGNAL QUALITY meter of this unit is designed to detect
and indicate interference signals. When the METER switch is
set to SIGNAL Q, the reception quality is indicated, but when it -
is set to MULTIPATH (indicator illuminates) during FM recep-
tion. the meter detects and indicates multipath interference.
in an area of weak signals, the meter should mainly be used as
a signal quality meter, and the antenna should be placed where
the indicator is most iluminated.
In an area of strong signals, the meter should mainly be used -
as a multipath meter, and the antenna located where the
indicator is least illuminated.
Because sound will be distorted when multipath reception is
detected, it may be necessary to re-adjust the antenna
direction, height, etc., and to replace the antenna with one
which is more highly directional.
Transmisstion
antenna
Wave received
Reflected
directly
wave
Outdoor FM
antenna
Humi-
nated
> MTLULTPAFH
9 eme a e “Eo TTTOR
SIGNAL QUALITY
i
{
Indicates multipath $ Functions only during
reception (LED illuminates) FM reception
METER
8 MULTIPATH
FSIGNAL 3
ON : ‘ON where signals are strong
{OFF during ordinary reception)
eo Switch ON ... indicates multipath reception (FM only)
e Switch OFF ... indicates signal quality
Position the antenna where SIGNAL QUALITY indication is most
and where multipath indication is least.
8 MANUAL Tuning
Automatic search tuning may be impossible if the station signal is
weak. If so, use manual tuning.
1. Setthe band selector GB (AM/FM).
Set the TUNING MODE switch 8) to MANUAL MONO.
Set the RX MODE switch @ to AUTO or DX.
Set the FM ATT switch 3 and the FILTER switch €) to OFF.
Use the TUNING button @ to tune.
The frequency will change rapidly if the TUNING button IS
pressed continuously. Release it slightly before reaching the
desired frequency, and then press it intermittently until the
desired frequency is reached.
6. Ifthe reception conditions are satisfactory when the TUNING
MODE switch @ is set to AUTO, return it to that position. (FM
stereo broadcasts can be heard as stereo at this setting.)
о К © №
E AUTOMATIC SEARCH Tuning
If signals are strong and there is no interference, quick automatic
search tuning is possible.
1. Set the band selector @ (FM/AM).
Set the TUNING MODE switch @ to AUTO.
Set the RX MODE switch (to AUTO or DX.
Set the FM ATT switch O and the FILTER switch ® to OFF.
Use the TUNING button { to tune.
The tuning will be automatic, stopping at each broadcast
station frequency.
6. If the station where tuning stops is not the one you want, press
the TUNING button @ once again.
The tuning operation may not stop at all during automatic
search tuning if an antenna is not connected, or if the unit is in a
building or some other place where signal reception is weak. If
this happens, change the TUNING MODE switch to MANUAL
MONO and try again.
SEEN
+
®@ FINE Tuning
Rapid tuning is usually possible by the automatic search or manual
tuning method, but more stabilized reception by fine tuning is
possible as follows. | |
(1) To receive a weak or very badly fading broadcast signal from
among many signals
(2) To receive a weak or medium-strength signal which is near a
strong signal
(3) If beat noise is received
in the above instances, manual tuning and then fine tuning can be
used to reduce noise and distortion. The best reception can be
easily obtained by using the signal quality meter during fine tuning.
* The optimum reception conditions obtained by fine tuning can
be programmed into the memory of the preset buttons, both for
FM and AM.
Set the and selector §B
—
(FM/AM).
2. Setthe TUNING MODE switch {8 to AUTO or MANUAL
MONO.
3. Setthe FX MODE switch to AUTO or DX.
4. Setthe FM ATT switch @ and the FILTER switch @} to OFF.
5, First, tune by using the TUNING button @
6. Next use the FINE TUNING button @ to obtain the very best
reception. (The frequency changes quickly if the button is
pressed continuously.)
® Frequency display when changing from fine
tuning to automatic or manual tuning …
Automatic search tuning begins immediately when changing
from fine tuning to automatic. :
When changing from fine tuning to manual:
ist press...
FM... rounded to nearest whole number
AM... rounded to nearest whole number
2nd and subsequent presses …
FM... 0.1 MHz steps
AM... 10-kHz steps
(1
ar
(2
Sor?
B PRESET Tuning
The preset button can be used to select, at a single touch, any
desired station which has been preset by manual, automatic
search or fine tuning. |
To program the PRESET MEMORY
The following example is for an FM station to be programmed to
preset button P1.
1.
2.
Set the band selector € to FM.
Follow the tuning procedure ( Y @ to tune tothe FM
frequency for that station.
Set the FILTER @, FM ATT @, RX MODE $ and TUNING
MODE O switches according to the reception conditions.
Press the MEMORY button @ and then, while the indicator is
illuminated, press the P1 preset button
(Alter the MEMORY indicator stops illuminating, the Pt indica-
tar will change to yellow.)
That FM station is now preset, including the reception mode
conditions, to preset button P1. To confirm the setting, press
some other preset button and then press preset bution P1.
The frequency will be displayed and you can confirm that the
reception mode is included.
To continue programming other buttons, when the MEMORY
button is pressed, the last preset button programmed (P1 in this
case) will flash in red and yellow.
ASEAN STEREO TUNER T-80
YAMAHA Natura.
EN
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e
AM stations can be programmed in the same way after the
band selector is set to AM.
In this way as many as 10 stations (total AM and FM) can be
programmed for preset tuning.
To change the setting for any button, follow the same
procedure. The new setting will be programmed in place of the
former one.
2 INITIAL STATION
By setting the most often listened to broadcast station to preset
button P1, you can immediately hear that station first when the
power is switched on. This feature is also useful for unattended
taping and for wake-up programming.
1. Program your favorite station to P1, as described above. lt then
becomes the “initial station”.
2. Set the POWER-ON MODE switch, on the rear panel, to INITIAL
STATION. |
3. To confirm, switch the power off and then on. The programmed
frequency and reception modes should be displayed.
4. If the POWER-ON MODE switch is left at the LAST STATION
position, the station received just before the power was
switched off will be heard.
Setto INITIAL STATION
PDWER-ON MOLE
cod fC] ve. as
A NAME €
e Memory retention
The memory back-up circuit will prevent the programmed
information from being lost even though the power is switched
OFF for timer use or other temporary power cut-off. If, however,
the unit is not used for a long time, the memory may be erased.
1 so, it can be re-programmed by simply following the original
procedure.
@ FM SECTION
TUNING RANGE «o.oo scene 87.6 t0 108 MHz
50 dB Quieting Sensitivity (IHF)
MONO LL rca ca rar és aa ace caan neane 1.6 a V (15.3 dBf)
SINR ONY cesse cena rene rca sense 1.2 uV (12.8 dBf)
SEEIBO cernes enrer rene anses ane 20 uV (37.2 dBf)
(NRON) EEE 10 uV (31.2 dBf)
Usable Sensitivity (IHF mono)
(30 dB S/N Quieting) 75 2... ee 0.94V (10.3 dB)
Image Response Ratio e 95 dB
IF Response Ratio... 115 dB
Spurious Response Ratio .............. N BEER ae aa 110 dB
AM Suppression Ratio scene 70 dB
Capture Ratio
LOCA! a car ea eee a errant 1.2dB
Alternate Channel Selectivity (DX) on 85 dB
Adjacent Channel Selectivity ...................2=. 20 dB
Signal-to-Noise Ratio (IHF)
Mono esos reee ren ea es ses 94 dB
Stereo... RD EE 86 dB
Harmonic Distortion
Mono: 100HZz ............eeeeee cenre DX 0.03 %, Local 0.02 %
1KHZ encino DX 0.15%, Local 0.03 %
BKHZ erkenne . DX 0.4%, Local 0.06 %
©1егео: 100 На... DX 0.5 %, Local 0.04 %
1TkHz e... Denim ene DX 0.5 %, Locai 0.03 %
BkHZ es DX 0.8 %, Local 0.07 %
Stereo Separation
560 HZ r ELLE RER EEE Local 65 ¢B
1) A ce ces Lea ae aa a … Local 65 d8
LO KHZ ar ear ea ce essence rene eee Local 60 dB
Frequency Response
50 Hz to 10KHZ cc aarue ES +0.2, —0.3 dB
20Hzt015KHZ ee rss re nca eee +0.2, —05dB
Subcarrier Product Ratio... EEE 65 dB
в АМ SECTION
Tuning Range ae es 510 to 1,620 kHz
Usable Sensitivity oor nren es eee 250 pV
Selectivity ............. mmm NETTE 30 dB
Signal-to-Noise Ratio ............... cn cnrs scesees 55 dB
Image Response Ratio ........ RES 40 dB
Spurious Response Ratio ........... Dina acen er en eee 50098
Harmonic Distortion (400 HZ) 20... ae se encens ee 0.2 %
a AUDIO SECTION
Output Level/{mpedance (High)
FM (100 % mod. 1TkHzZ) nn se . 1 V/2 kQ
AM (30 % mod. 400 Hz) ..............e. ersenenres 0.3 V/2 ka
REC. CAL. Signal (333 HZ)... 0.5 V/2 kQ
Output Level/Impedance (Low)
FM (100 % mod, 1 KHZ) resserre 0.5 V/2 5 kg
AM (100 % mod. 1 kHz} .............. ees 0.15 V/2.5 ka
REC. CAL. Signal (333 HZ) iii sens 0.25 V/2.5 ka
E GENERAL
Power SUpply ............ nn nee ee, 120 V, 60 Hz
Power COnsumpfiOn Yes EEE EEE KEER EN 13 W
Dimensions (W x HX D) i, 435 x 93.5 x 357 mm
(17-1/8" x 3-6/8" x 14")
Weight... eee nee 5 Ка (11 165.)
E ACCESSORIES
FM T-type ANTENNA oie 1
® Pin-Pin Cord oi er ener 1
e AM Loop Antenna... ee 1
e 750 Loaxial PIUG oo eecereen can are re re ee enr eee eee 1
e Station Card... A 1
Specifications subject to change without notice.
Occasional static-like noise.
Before assuming that your tuner is faulty, check the following troubleshooting list which details corrective action you can take yourself
without having to call a service engineer. If you have any doubts or questions, get in touch with your nearest Yamaha dealer.
Ignition noise from motorcycles or automobiles.
Install the antenna as high as possible and away from traffic; use coaxial
cable.
Noise caused by a thermostat-controlied appliance.
Try installing a noise-prevention device to the appliance
Noise increases during stereo broadcasts.
Automatic search tuning can't be done.
Due to stereo broadcast characteristics, occurs far from
station or if antenna input is weak.
Check the antenna connection.
Use an FM antenna.
Try changing the direction of the FM antenna, or using one with more
elements.
Try setting the RX MODE switch to DX.
Try setting the FM ATT switch to OFF.
- Try manual or fine tuning.
FM STEREO indicator flashes irregularly; excessive
noise.
Insufficient antenna input.
Use an antenna appropriate MO the local field force; try setting the TUNING
N
| MODE switch to MANUAL/M
Try setting the FM ATT switch to OFF,
incomplete tuning.
Retune, or reprogram the preset memory.
FM antenna is used but sound is distorted.
Multipath interference.
Replace the antenna with one of higher directionality, or install the antenna
where it won't easily receive multipath signals.
Left channel sound leaks to right channel during
stereo test broadcast.
The crosstalk phenomenon; normal if slight.
Compare right sound with left; normal if only slight.
Try setting the FILTER switch to OFF.
Stereo broadcasts can’t be received as stereo.
TUNING MODE switch set to MANUAL/MONO.
Try setting the TUNING MODE switch to AUTO.
Preset tuning can't be made.
Memory erased because not used for a long time.
Reprogram the preset memory.
Insufficient sensitivity.
Automatic search tuning cant be done.
Weak signals, or incorrect connection or direction of
antenna.
Try changing the direction of the AM loop antenna.
Try installing an outside AM antenna.
Try manual tuning.
{Continuous noises.
Noise caused by atmospheric static or lightning, or by
fluorescent light, motor or thermostat-controlled ap-
pliance.
Can be reduced by using an outside AM antenna and grounding completely;
compiete elimination is difficult.
Unusual high-pitch noises (especially at night).
Interference by adjacent frequency signals.
Try changing the direction of the AM loop antenna.
TV is being used nearby.
Try separating this unit and the TV.
10
SINCE 1887
NIPPON GAKKI CO, LTD. HAMAMATSU, JAPAN
Printed in Japan 841 %