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Sony CDX-M9900 User Guide

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Using the rotary commander
You can also control the unit (and optional CD/
MD units) with a rotary commander 
(optional)
.
First, attach the appropriate label depending on 
how you want to mount the rotary commander. 
The rotary commander works by pressing 
buttons and/or rotating controls.
By pressing buttons
By rotating the control
Rotate and release to:
– Skip tracks.
To continuously skip tracks, rotate once and 
rotate again within 2 seconds and hold the 
control.
– Tune in stations automatically.
Rotate, hold, and release to:
– Fast-forward/reverse a track.
– Find a station manually.
By pushing in and rotating the control
Push in and rotate the control to:
– Receive preset stations.
– Change discs during CD (MD) playback*
1
.
– Change albums*
3
.
*1
Only if the corresponding optional equipment is 
connected.
*2
If your car has no ACC (accessory) position on the 
ignition key switch, after turning off the ignition, be 
sure to press and hold 
(OFF)
 until the display 
disappears.
*3
Available only when an MP3 file is played.
Press
To
(SOURCE)
Change the source 
(Radio/CD/MD*
1
)/Power 
on.
(MODE)
Change operation 
(Radio band/CD unit*
1
/MD 
unit*
1
).
(ATT)
Attenuate the sound.
(OFF)*
2
Stop playback or radio 
reception/Power off.
(SEL)/(SOUND) (Not available)
(DSPL)
Select the display mode 
(This button works as the 
SCREEN button).
SEL
DSPL
MODE
SEL
DSPL
MODE
OFF
(ATT)
(SOURCE)
(DSPL)
(MODE)
(OFF)
Rotate the VOL control 
to adjust the volume.
continue to next page 
t
SEEK/AMS 
control
PRESET/DISC 
control