Yamaha K-903 User Manual (English)

Questions and Answers:

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Katrina DiazAug 19, 2025
Why is there excessive noise coming from my Yamaha K-903?
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  Calvin WilsonAug 19, 2025
  Excessive noise in your Yamaha Cassette Player can stem from several factors. The head may be dirty or magnetized; in this case, clean the head or demagnetize it using a head demagnetizer. The tape might be worn out or of poor quality, so try a better tape. Improperly made connections can also cause noise; check and reinsert your input and output connections properly. Finally, external electrical noise from appliances like TVs or electric blankets can interfere; move the deck away from these sources.
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Ronald StricklandAug 21, 2025
Why is the recorded sound distorted on my Yamaha K-903?
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  Robert GainesAug 21, 2025
  If the recorded sound from your Yamaha Cassette Player is distorted, it could be due to a bad tape (stretched or deformed); try replacing it with a fresh tape. A warped cassette shell can also cause distortion, and in this case, you'll need to replace the tape. Additionally, if the recording level is too high, check the input level with the signal level meter and lower the recording level when recording.
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Claudia PowellAug 25, 2025
Why is the playback sound muffled on my Yamaha K-903 Cassette Player?
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  Peter MillerAug 25, 2025
  If the playback sound from your Yamaha Cassette Player is muffled and high frequencies are inaudible, ensure that a normally-recorded tape is played back in OFF position. If not, clean the heads and demagnetize them with a head demagnetizer.
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Morgan WongAug 26, 2025
How to fix a Yamaha K-903 Cassette Player when the tape doesn’t move?
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  Leah WhiteAug 26, 2025
  If the tape doesn’t move in your Yamaha Cassette Player during recording or playback, ensure the power plug is properly plugged in by reinserting it correctly. Also, avoid playing warped or damaged cassette tapes.
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dawnrogersAug 28, 2025
Why do the sounds become faint on my Yamaha K-903?
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  Jack HermanAug 28, 2025
  If the sounds from your Yamaha Cassette Player become faint and sometimes inaudible, the head may be dirty, so clean it. Alternatively, the head may be magnetized, requiring you to demagnetize it using a head demagnetizer. Also, the tape may be damaged or of poor quality; in that case, change to a different tape.
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zcortezAug 30, 2025
What causes excessive wow on my Yamaha K-903 Cassette Player?
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  Emily Hernandez MDAug 30, 2025
  If you are experiencing excessive wow (wavering of the sound) on your Yamaha Cassette Player, it could be due to a dirty capstan, pinch roller, or poor tape. Try cleaning the capstan and pinch roller, or switch to a better tape. Also, if the tape is wound unevenly, rewind it.
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matthewowensSep 1, 2025
What to do if my Yamaha Cassette Player fails to record?
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  Robert ReedSep 1, 2025
  If your Yamaha Cassette Player fails to record, adjust the REC LEVEL control if it is set too low. Also, if the protective tabs are broken off the cassette tape, change the tape or cover the protective hole with adhesive tape.
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longcandiceSep 3, 2025
Why is my Yamaha Cassette Player playing but there is no sound?
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  Matthew FisherSep 3, 2025
  If your Yamaha Cassette Player is playing back, but no sound is heard, check and secure the connections between the deck and your stereo amplifier/receiver.
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Scott MitchellSep 5, 2025
Why doesn't the REC/PAUSE button work on my Yamaha Cassette Player?
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  carpenterdianeSep 6, 2025
  If the REC/PAUSE button on your Yamaha Cassette Player fails to function, ensure that a cassette tape is loaded. If it is, check if the protective tabs on the tape are broken off; if so, change the tape or cover the protective hole with adhesive tape.
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Cheryl WilliamsSep 7, 2025
Why does my Yamaha Cassette Player stop in the middle of the tape?
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  Melinda BishopSep 8, 2025
  If your Yamaha Cassette Player stops in the middle of recording or playback, there may be slack tape or tape spillage wound around the capstan. Insert a pencil in the hole in the cassette shell and turn it to take up the slack.

Yamaha K-903 Specifications

General

Track System	4-track, 2-channel stereo
Tape Speed	4.8 cm/s
Frequency Response	20Hz to 20kHz (Metal tape)
Total Harmonic Distortion	0.8%
Type	Stereo Cassette Deck
Heads	1 x record/playback, 1 x erase
Motor	DC servo motor
Tape Type	Type I, CrO2, Metal
Wow and Flutter	0.05%
Dimensions	435 x 116 x 285 mm