Service Manual
Page 36
Troubleshooting Audio Problem [MIC problem] Start Check LS201 pad and MIC NO Clean LS201 pad and change MIC YES NO Check R220, R221, R202, R207, C202 Change R220, R221, R202, R207, C202 YES NO Check C208, C200 Change C208, C200 YES MIC will work properly R202, R207 R220, R221 MIC200 C208 C202 C200 - 37 - 4.
Troubleshooting Audio Problem [MIC problem] Start Check LS201 pad and MIC NO Clean LS201 pad and change MIC YES NO Check R220, R221, R202, R207, C202 Change R220, R221, R202, R207, C202 YES NO Check C208, C200 Change C208, C200 YES MIC will work properly R202, R207 R220, R221 MIC200 C208 C202 C200 - 37 - 4.