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CAUTION: READ THIS BEFORE OPERATING
YOUR UNIT.

1.

This unit is a sophisticated stereo cassette deck. To ensure proper
operation for the best possible performance, please read this
manual carefully.

2.

Choose the installation location of your unit carefully. Avoid placing
it in direct sunlight or close to source of heat. Also avoid locations
subject to vibration and excessive dust, heat, cold or moisture.
Keep it away from sources of hum such as transformers or motors.

3.

Do not open the cabinet as this may result in damage to the deck or
electrical shock. If a foreign object should get into the deck, contact
your local dealer.

4.

Do not apply excessive force when operating switches and knobs.

5.

When moving the deck, be sure to first pull out the power plug and
remove all cords connecting the deck to other equipment.

6.

Do not attempt to clean this unit with chemical solvents as this may
damage the finish. Use a clean, dry cloth.

7.

Never allow metallic items (e.g. screwdrivers, tools, etc.) to come
near the record/playback head assembly. Doing so may not only
scratch or damage the head’s mirror-smooth finish, it may also
change the magnetic characteristics of the heads, causing a
deterioration in reproduction quality.

8.

Although the record/playback head used in this unit is a high quality
head with outstanding reproduction characteristics, it can become
dirty through the use of old tapes or from dust accumulation over
time. This can have a serious effect on reproduction quality. Clean
the heads regularly with one of the commonly available head
cleaners or with cleaning solutions as explained later in this manual.

9.

Be sure to read the “Troubleshooting” section of this manual for
advice on common operating errors before concluding that your unit
is faulty.

10.

Unplug the power cord from the wall outlet if the unit is not to be
used for an extended period of time. To disconnect the cord, pull it
out by grasping the plug. Never pull the cord itself.

11.

Keep this manual in a safe  place for future reference.

12.

Voltage Selector (General model only)
The voltage selector on the rear panel of this unit must be set
for your local mains voltage BEFORE plugging in the AC mains
supply.

Please check the copyright laws in your country to
record from records, compact discs, radio, etc.
Recording of copyright material may infringe copyright
laws.

CAUTION (For Canada model)

TO PREVENT ELECTRIC SHOCK, MATCH WIDE
BLADE OF PLUG TO WIDE SLOT, FULLY INSERT.

THIS DIGITAL APPARATUS DOES NOT EXCEED THE
“CLASS B” LIMITS FOR RADIO NOISE EMISSIONS
FROM DIGITAL APPARATUS SET OUT IN THE RADIO
INTERFERENCE REGULATIONS OF THE CANADIAN
DEPARTMENT OF COMMUNICATIONS.

We Want You Listening For A Lifetime

YAMAHA and the Electronic Industries Association's
Consumer Electronics Group want you to get the most out of
your equipment by playing it at a safe level.
One that lets the sound come through loud
and clear without annoying blaring or
distortion – and, most importantly, without
affecting your sensitive hearing.  Since
hearing damage from loud sounds is often
undetectable until it is too late, YAMAHA and
the Electronic Industries Association's
Consumer Electronics Group recommend
you avoid prolonged exposure to excessive
volume levels.

We
Want You

LISTENING

For A Lifetime

FCC INFORMATION (U.S.A.)

1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT!

This product, when installed as indicated in the
instructions contained in this manual, meets FCC
requirements.  Modifications not expressly approved
by Yamaha may void your authority, granted by the
FCC, to use the product.

2. IMPORTANT: When connecting this product to

accessories and/or another product use only high
quality shielded cables.  Cables supplied with this
product MUST be used.  Follow all installation
instructions.  Failure to follow instructions could void
your FCC authorization to use this product in the USA.

3. NOTE: This product has been tested and found to

comply with the requirements listed in FCC
Regulations, Part 15 for Class "A" digital devices.
Compliance with these requirements provides a
reasonable level of assurance that your use of this
product, in a commercial environment, will not result in
harmful interference with other electronic devices.
However, operation of this product in a residential area
is likely to cause interference in some form.  In this
case you, the user, bear the responsibility of correcting
this condition.

This product generates/uses radio frequencies and, if
not installed and used according to the instructions
found in the users manual, may cause interference
harmful to the operation of other electronic devices.
Compliance with FCC regulations does not guarantee
that interference will not occur in all installations.  If this
product is found to be the source of interference,
which can be determined by turning the product "OFF"
and "ON", please try to eliminate the problem using one
of the following measures:

Relocate either the product generating the interference
of the device that is being affected by the interference.

Utilize power outlets that are on different branch
(circuit breaker or fuse) circuits or install AC line filter/s.

In the case of radio or TV interference, relocate/reorient
the antenna.  If the antenna lead-in is 300 ohm ribbon
lead, change the lead-in to coaxial type cable.

If these corrective measures do not produce
satisfactory results, please contact your local retailer
that is authorized to distribute this type of product.  If
you cannot locate the appropriate retailer, please
contact Yamaha Electronics Corp., U.S.A. 6600
Orangethorpe Ave, Buena Park, CA90620

The above statements apply ONLY to those products
distributed by Yamaha Corporation of America or its
subsidiaries.

Summary of Contents for K-902

Page 1: ...réo de la série Natural Sound OWNER S MANUAL MODE D EMPLOI IMPORTANT Please record the serial number of your unit in the space below Model Serial No The serial number is located on the rear of the unit Retain this Owner s Manual in a safe place for future reference ...

Page 2: ...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 17 Grounding or Polarization The precautions should be taken so that the grounding or polarization of an appliance is not defeated CAUTION The apparatus is not disconnected from the AC power source as long as it is connected to...

Page 3: ...nic Industries Association s Consumer Electronics Group want you to get the most out of your equipment by playing it at a safe level One that lets the sound come through loud and clear without annoying blaring or distortion and most importantly without affecting your sensitive hearing Since hearing damage from loud sounds is often undetectable until it is too late YAMAHA and the Electronic Industr...

Page 4: ... Playback from DECK A to DECK B Selection Search Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation DOLBY and the double D symbol are trademarks of Dolby Laboratories Licensing Corporation DUBBING 13 CASSETTE TAPES 14 MAINTENANCE 15 OPTIONAL REMOTE CONTROL TRANSMITTER 15 TROUBLESHOOTING 16 SPECIFICATIONS 17 Recording Mute Function Rec Return Operation Ea...

Page 5: ...uld be connected to the Rec Out Recording Output jacks on your amplifier receiver Connect the power cord to an AC wall outlet or to an AC outlet on the rear panel of your amplifier receiver if provided Amplifier or receiver NOTES ON THIS MANUAL In this manual the main operation buttons of the front panel are indicated based on DECK B when the operation is common to both DECKs A and B Since the loc...

Page 6: ...rse and the corresponding indicator lights on the display To stop playback Press the STOP button To remove the cassette tape press the EJECT button The cassette compartment door opens To turn off the power press the POWER button To set the counter reading to 0000 Press the RESET button Use the tape counter to aid in locating a point on a tape 0000 to 9999 To fast forward or rewind the tape When th...

Page 7: ...ape is fast forwarded to the end of the forward side playback automatically starts from the reverse side Both sides of the tape are repeatedly played back up to 8 times When the tape is fast forwarded or rewound to the beginning or the end of a side playback automatically starts from the same side or the other side respectively RELAY Cassette tapes loaded in DECKs A and B are played back sequentia...

Page 8: ...sired selection by searching for the beginning of the selection When the tape running indicator is lit To search for the next selection When the tape running indicator is lit When the tape running indicator is lit To search for the beginning of the current selection When the tape running indicator is lit To search for the selection located before the current selection Operate the following buttons...

Page 9: ...Ks A and B start playback from DECK A The playback patterns differ according to the setting of the MODE button Refer to the following When the MODE button is set to RELAY DECK A forward side reverse side DECK B forward side reverse side When the MODE button is set to DECK A forward side reverse side DECK B forward side reverse side When the MODE button is set to DECK A forward side reverse side DE...

Page 10: ...sh in the compartment door until it locks shut PLAY Recording starts 1 2 4 Preparation for recording Turn on the POWER switch Set your amplifier or receiver to cassette deck function mode Basic operation To record a program source 3 Select the tape running direction Press the DIRECTION button for DECK B Each time this button is pressed the tape running direction changes between forward and reverse...

Page 11: ...se OFF No noise reduction B For recording the sources with Dolby B NR C For recording the sources with Dolby C NR Dolby noise reduction is an extremely effective method of reducing undesirable background hiss on tapes This unit incorporates both Dolby B NR and the newer Dolby C NR system Dolby C NR is approximately twice as effective as the earlier Dolby B NR Display during recording 30 dB A R L 2...

Page 12: ...eck enters Rec pause mode after making a 4 second blank interval To resume recording press the PLAY button If a blank interval shorter than 4 seconds is desired press the PLAY button at the desired point during Rec mute mode Recording will be resumed from that point During recording During Rec mute operation the REC indicator blinks During recording When the indicator is lit When the indicator is ...

Page 13: ...bed To stop dubbing Press the STOP button If you press the STOP button on DECK B both decks stop simultaneously and the dubbing mode is cancelled If you press the STOP button on DECK A DECK A stops immediately and then DECK B stops after recording a 4 second blank section When the tape in DECK B reaches its end DECK B and DECK A stop at the same time When the tape in DECK A reaches its end DECK A ...

Page 14: ...es available However they all conform to standard specifications so any brand may be used with the deck Classification of Cassette Tapes by Formulation Cassette tapes are available in four basic types depending on their formulation or type of magnetic material and manufacturing process These four types are commonly known as Normal Type I NORM Chrome Type II HIGH CrO2 Ferrichrome Type III FeCr and ...

Page 15: ... Normal use will cause an accumulation of dirt and dust on the heads capstans and pinch rollers This can lead to poor sound quality drop outs intervals with no sound unsteady tape speed loss of high frequency response etc Thus clean the heads and all surfaces over which the tape travels with a commercially available cleaning cassette and fluid type cleaner DEMAGNETIZATION After 20 30 hours of use ...

Page 16: ...with adhesive tape Clean head Demagnetize head using head demagnetizer Change to a different tape Replace with a fresh tape A warped cassette shell cannot be fixed Replace with another tape and test Check input level with signal level meter and use lower rec level when recording Check and secure connections Clean head Demagnetize head with head demagnetizer Change to better tape Check input and ou...

Page 17: ...ency Response 20 dB Type I Normal 20 16 000 Hz 3 dB Type II High CrO2 20 17 000 Hz 3 dB Type IV Metal 20 19 000 Hz 3 dB Harmonic Distortion less than 1 0 Input Sensitivity Impedance Line 100 mV 43 k ohms Output Level Line 570 mV 1 4 k ohms Phones 0 25 mV 8 ohms Channel Separation 1 kHz more than 40 dB Crosstalk 125 Hz more than 55 dB SPECIFICATIONS GENERAL Power Supply U S A and Canada model 120 V...

Page 18: ... I normale 20 16 000 Hz 3 dB Type II élevée CrO2 20 17 000 Hz 3 dB Type IV métal 20 19 000 Hz 3 dB Distorsion harmonique Moins de 1 0 Sensibilité d entrée impédance Ligne 100 mV 43 k ohms Niveau de sortie Ligne 570 mV 1 4 kohms Casque 0 25 mV 8 ohms Séparation des canaux 1 kHz inférieure à 40 dB Diaphonie 125 Hz inférieure à 55 dB GENERALES Alimentation Modèle pour les Etats Unis et le Canada 120 ...

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