Sony CDX-3900R

Location of controls

Refer to the pages listed for details.

1 Volume control dial 15

2 MENU button 7, 9, 10, 11, 12, 14, 15, 17,

3 Z (eject) button (located on the front

side of the unit behind the front panel)
8

4 PRST +/– (cursor up/down) buttons

7, 9, 10, 11, 12, 14, 15, 17, 20

During radio reception:

Preset stations select 11, 16

5 DSPL/PTY (display mode change/

programme type) button 8, 9, 13, 16

6 MODE button 15

During radio reception:

BAND select 10, 11

7 SOURCE (TUNER/CD) button

7, 8, 9, 10, 11

8 Display window

9 OPEN button 6, 8, 22

q; D-BASS button 21

qa SOUND button 19

qs Reset button (located on the front side

of the unit behind the front panel) 6

qd OFF button* 6, 7, 8

qf SEEK/AMS –/+ (cursor left/right) buttons

7, 9, 11, 12, 14, 15, 17, 19, 20
Automatic Music Sensor 9
Manual Search 9
Seek 11, 13

qg ENTER button 7, 9, 10, 11, 12, 14, 15, 16,

17, 20

qh Number buttons

During radio reception:

Preset number select 11, 14, 15

During CD playback:

(1) REP 10
(2) SHUF 10

qj AF button 13, 15

qk TA button 14, 15

* Warning when installing in a car

without ACC (accessory) position on
the ignition key switch
Be sure to press (OFF) on the unit for two
seconds to turn off the clock display after
turning off the engine.
When you press (OFF) only momentarily,
the clock display does not turn off and this
causes battery wear.

CDX-4000RX/4000RV
/4000R/3900R

PRST

–

MODE

DSPL

OFF

PTY

ENTER

SOUND

SOURCE

-SEEK/AMS

REP

SHUF

OPEN

D-BASS