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NO.7 POOR SOUND QUALITY (POOR TREBLE SOUND)

id0903a1825400

7 | Poor sound quality. (Poor treble sound)/Possible DTC: -
TROUBLESHOOTING HINTS • Tape head gathers oxide residue from cassette tape. • Cassette tape is malfunctioning. • Cassette tape player is malfunctioning. • Dolby noise reduction is used improperly.

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • Inspect the Dolby noise reduction mode. • Is the Dolby noise reduction mode set correctly? | Yes | Go to the Step 3.
No | Go to the next step.
2 | • Set the Dolby reduction mode correctly? • Is the sound improved? | Yes | Set the Dolby noise reduction correctly/
No | Go to the next step.
3 | • Replace with the cassette tape known to be good. • Is the sound improved? | Yes | The cassette tape player is normal. Explain to the customer that the cassette tape is malfunctioning. Note • The tape used for a long time may have a poor sound quality.
No | Go to the next step.
4 | • Clean the tape head using the good quality head-cleaning tape. • Is the sound improved? | Yes | Explain the repairs (head cleaning) to the customer.
No | Replace the cassette tape player.