NO.7 POOR SOUND QUALITY (POOR TREBLE SOUND)[CASSETTE TAPE PLAYER]

id0903e4825400

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

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.
1		No	Go to the next step.
2	• Set the Dolby reduction mode correctly. • Is the sound improved?	Yes	Set the Dolby noise reduction correctly.
2		No	Go to the next step.
3	• Replace with a 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 • Sound quality deteriorates on cassettes that have been played over a long period of time.
3		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.
4		No	Replace the cassette tape player.