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16

If your cassette deck fails to operate normally, check the following table.  It lists common operating errors and simple measures
which you can take to correct the problem.  If it cannot be corrected, or the symptom is not listed, disconnect the deck’s power
cord and contact your authorized YAMAHA dealer or authorized service center for help.

Cause

÷

Power plug is not properly plugged in.

÷

Cassette shell is warped or damaged.

÷

No cassette tape loaded.

÷

Protective tabs are broken off.

÷

Head is dirty.

÷

Head is magnetized.

÷

Tape is damaged or of poor quality.

÷

Tape is bad (stretched, deformed, etc.).

÷

Cassette shell is warped.

÷

Recording level is too high.

÷

Faulty connection between deck and stereo
amplifier/receiver.

÷

Head is dirty.

÷

Head is magnetized.

÷

Worn out or poor quality tape.

÷

Connection(s) improperly made.

÷

Affected by external electrical noise.

÷

Dirty capstan, pinch roller, etc., or poor tape.

÷

Tape is wound unevenly.

÷

Slack tape, or tape spillage wound around
capstan.

÷

REC LEVEL control is set to too low.

÷

Protective tabs are broken off.

÷

Blank section is too short.

÷

Recorded section has low-level portions.

÷

Conversation, etc. has been recorded.

÷

Dolby NR-recorded tape is played back in OFF
position.

÷

Normally-recorded tape is played back in Dolby
NR.

÷

Heads are dirty.

÷

Heads are magnetized.

÷

Basic levels are different for different cassette
decks.

÷

The batteries are exhausted.

÷

The remote control transmitter is operated from
an incorrect distance or angle.

÷

The remote control sensor is lighted strongly.

Cure

÷

Reinsert plug properly.

÷

Do not play damaged tapes.

÷

Load a cassette tape.

÷

Change tape or cover protective hole 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 output connections and
reinsert properly.

÷

Move deck away from electrical appliances
(TV, fluorescent light, electric blanket, etc.).

÷

Clean capstan and pinch roller, or change to
better tape.

÷

Rewind tape.

÷

Insert pencil in hole in cassette shell and turn
to take up slack.

÷

Adjust REC LEVEL control.

÷

Change tape or cover protective hole with
adhesive tape.

÷

Blank sections must be at least 4 seconds
long.

÷

No remedy

÷

No remedy

÷

Play back in appropriate Dolby NR position.

÷

Play back in OFF position.

÷

Clean heads and carry out demagnetization
with head demagnetizer.

÷

This is not a fault.

÷

Replace batteries.

÷

Operate it from less than 7 meters (about 23
ft.) and 30°.

÷

Place the unit away from the strong light.

Fault

Tape doesn’t move in recording or playback.

REC/PAUSE button fails to function.

Sounds become faint and sometimes
inaudible.

Recorded sound is distorted.

Tape is playing back, but no sound is heard.

Excessive noise.

Excessive wow (wavering of the sound).

Tape stops in the middle of recording or
playback.

Fails to record.

Search does not operate correctly.

High frequencies in the playback sound are
emphasized and unpleasant to listen to, and
noise level (hiss) is also high.

Playback sound is muffled and high
frequencies are inaudible.

When playing back tapes recorded on other
decks, meter deflections are greater
(smaller) than when recorded.

The remote control transmitter cannot be
operated.

TROUBLESHOOTING

Содержание K-902

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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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