Mazda RX-8 Workshop Manual page 3298

BASS/TREB.
Is there a poor
sound quality at "-3
— +3" of
"BASS/TREB"?
NOTE:
When press the
AUDIO CONT switch
for a few seconds,
BASS/TREB is set at
"0".
4 Attempt to duplicate
the symptom on the
other vehicle.
Is the sound better
than the customer's
vehicle?
5 Identify the speaker
with a broken sound
by adjusting
BAL/FADE.
No If there is a broken sound at "+6 — -6" of BASS/TREB with
the maximum volume, the system is normal.
Without BOSE®:
Yes
Replace the audio unit.
(See CENTER PANEL UNIT
REMOVAL/INSTALLATION.)
(See CENTER PANEL UNIT
DISASSEMBLY/ASSEMBLY.)
With BOSE®:
If noise occurs from the speaker of a
specific channel, or the volume is minimized
and the noise occurs:
If the noise occurs from the speaker of two
or more channels or the volume is
minimized and the noise does not occurs.
No The system is normal.
YesGo to the next step.
No Install the speaker properly.
Replace the audio
amplifier.
(See AUDIO AMPLIFIER
REMOVAL/INSTALLATION.)
Replace the audio unit.
(See CENTER PANEL UNIT
REMOVAL/INSTALLATION.)
(See CENTER PANEL UNIT
DISASSEMBLY/ASSEMBLY.)