Poor Sound Quality - Mazda MX-5 1990 Workshop Manual

T
AUDIO
Cassette Tape Player
Symptom: Poor sound quality.
Note
• Before troubleshooting, verify that the customer is using the audio system correctly. If not,
instruct him/her in the proper operating procedurer. (Refer to pages T -110.)
• If a speaker(s) do not operate, refer to "Speaker(s) do not operate".
(pages T -115 or 117).
05UOTX-340
9MUOTX-380
9MUOTX-382
T-122
05UOTX-265
Step 1
1. Playa known good tape, and check the sound quality.
2. If sound quality is normal, the previous tape is defective.
The system is OK.
3. If sound quality is still poor, go to Step 2.
Step 2
1.
Check for oxide or dirt on the head, capstan, and pinchroller.
2. If oxide or dirt is found, clean the parts with a head cleaner.
3. If there is no oxide or dirt, go to Step 3.
Step 3
1 .
Check for damage to the speakers.
2. Check for proper connection of the speaker connectors.
3. Disconnect all speaker connectors, and measure resistance
of each speaker.
Resistance: 40
4. If a speaker has incorrect resistance or is damaged, replace
it.
5. If the speakers are OK, go to Step 4.
Step 4
1. Compare sound quality with that of another vehicle that has
the same type of audio system.
2. If the sound quality is inferior to the other unit, replace the
audio unit.