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G-99-046-E0.pdf1/2 Service Technical Information MODEL NO. NSX -S888 / S999 / S989 / S898 / A888 / A999 SUBJECT Modify sound quality REF.No. :G - 99 - 046 - E0 DATE :01. NOV. 1999 The models in question may receive customer complaints such as "bass sound is too strong," or "sound lacks sharpness." Take the following steps to improve the sound quality. Perform the following modifications on the MAIN C.B. circuit: 1. Change values of C614 capacitor 3.Replace R635 from 0.1 microfarad to 0.33 microfarad. 180K 100K 2. Add R695 and R696 10K resistors between "+" terminal of C451/C452 and 2.Add R695 10K C451 36 35 34 IC601pin 16. Note: Use CUSH-S,PWB to avoid 1.Replace C614 contacts with other components. 0.1 0.33 IC601 16 3. Change values of R635 and R636 resistors from 180K to 100K . 15 13 14 2.Add R696 10K 3.Replace R636 180K 100K C452 4. Change values of C451 and C452 capacitors from 1 microfarad/50V to 0.47 microfarad/50V. 5. Change values of capacitors C471 and

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