Inspection Procedure 18

Inspection Procedure 18: Distortion On AM And/Or FM.

DIAGNOSIS

STEP 1. Check the level of distortion.

Q : How much distortion is there?

Occasional distortion : Go to Step 2.
Constant distortion : Go to Step 3.

STEP 2. Check the location of the distortion.

Q : Is there distortion when the vehicle is near the radio station?

YES : The antenna is receiving too strong a signal.

NO : Go to Step 3.

STEP 3. Check the wires at each speaker.

Q : Are the speaker wires contacting the paper speaker cone?

YES : Move the speaker wires away from the paper speaker cone. The speaker should now be free of distortion.

NO : Go to Step 4.

STEP 4. Remove the speakers, and check the paper cone for foreign material or damage.

Q : Is there foreign material or damage on the paper cone of the speaker?

YES : Repair or replace the speakers. The speaker should now be free of distortion.

NO : Go to Step 5.

STEP 5. Check for distortion with the speaker installed.

Q : Does a distortion occur?

YES : Install the speaker securely. The speaker should now be free of distortion.

NO : Repair or replace the radio and CD player. The speaker should now be free of distortion.