Mazda RX-8 Workshop Manual page 3335

Is buzzing sound or voice confirmed?
4 Tune to local broadcasting station and
check reception condition.
Is reception okay?
5 Push PRESET switches and check preset
conditions.
Has preset been stored?
6 Is aftermarket electronic equipment (two-
way radio, navigation system, mobile
phone, etc.) installed?
NOTE:
TV antenna located closely to audio
antenna can be cause of noise. Relocate TV
antenna.
7 Remove aftermarket electronic equipment.
Turn audio unit/car-navigation unit ON and
check reception condition.
Is reception improved?
8 Refer to confirmation step 3, and inspect
antenna system.
Is a whirring sound present?
9 Inspect antenna plug connection condition.
Is connection okay?
No Follow diagnostic procedure for
symptom No. 3 (AUDIO) or No. 4
(AUDIO).
YesGo to the next step.
No Go to Step 6.
YesThe system is normal.
No Preset broadcasting stations.
YesGo to the next step.
No Go to Step 8.
YesThe system is normal.
(Explain to customers that
aftermarket electronic equipment is
cause of noise)
No Go to the next step.
YesReplace audio unit/car-navigation
unit.
(See CENTER PANEL UNIT
REMOVAL/INSTALLATION.)
(See CENTER PANEL UNIT
DISASSEMBLY/ASSEMBLY.)
No Go to the next step.
YesGo to the next step.
No Insert antenna plug securely.