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SJC8A00J10300000000FEAT06 SJC8A00J10300000000FEAT07 Special Tools Required Special Tools Required Frequency sweep Sound judging 23-54 23-54 Audio System Sound Quality Diagnosis (cont’d) Diagnostics CD 07AAZ-SDBA100 Do this test to find rattles or reverberations that may 1. Insert audio diagnostic CD (T/N 07AAZ-SDBA100) into the CD player. 2. Play track No. 13 (sweep from 500 Hz to 35 Hz) at a normal, or slightly higher than normal, volume 3. Listen to each speaker for poor sound quality or reverberations caused by specific frequencies. Use • If vibrations or poor sound quality is heard, go to step 4. • If no vibrations or poor sound quality is heard, go to sound judging (see page 23-54). 4. Choose the appropriate track from No. 14 to 25 (small range frequency sweep) or 26 to 53 (single NOTE: When you get to the track that recreates the 5. Replace or insulate the source of the vibration or, if the speaker is the source of the poor sound quality, Diagnostics CD 07AAZ-SDBA100 Do this test to compare overall sound quality, imaging, 1. In the customer’s vehicle, set the bass, treble, fader, and balance settings to the customer’s normal 2. Insert audio diagnostic CD (T/N 07AAZ-SDBA100) into the CD player. 3. Play tracks No. 7 to 12 (sound quality, midland, dynamics, and imaging demonstration tracks) at a 4. Listen to areas of the track that stand out as being either very clear or poorer than other areas of the 5. Insert audio diagnostic CD (T/N 07AAZ-SDBA100) into the CD player of a known-good vehicle. 6. Play the tracks at the same volume level and the same bass, treble, balance, and fader settings as 7. Listen to the same area of the track that stood out as being either very clear or poorer than other |