MEX-BT2500 - Sony Car Audio Service Manual (repair manual). Page 9

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9
MEX-BT2500
(E model)
Location of controls and basic operations
Main unit
Card remote commander 
RM-X304
Refer to the pages listed for details. The 
corresponding buttons on the card remote 
commander control the same functions as those 
on the unit.
A
OFF button
To power off; stop the source.
B
EQ (equalizer)/BLUETOOTH button  
CD/Radio/Bluetooth audio:
To select an equalizer type (XPLOD, 
NATURAL, HARD, UPBEAT, VOCAL, 
CUSTOM or OFF).
Power off:
For Bluetooth signal on/off, pairing.
C
Volume control dial/select/
(handsfree) button
To adjust volume (rotate); select setup items 
(press and rotate); receive/end a call (press).
D
SOURCE button
To power on; change the source (Radio/CD/
AUX/Bluetooth audio/Bluetooth phone).
OFF
BTM
SCRL
DSPL
SEEK
SEEK
PAUSE
ALBM
DIM
REP
SHUF
EQ
AUX
1
2
3
4
5
6
MODE
SOURCE
BLUETOOTH
PUSH SELECT /
1
qa qs
q;
9
2
qd
qh qj
qg
5
8
6
7
3
MEX-BT2500
qf
4
RESET
ql
qk
OFF
DSPL
SCRL
SEL
SOURCE
MODE
1
3
2
4
6
5
ATT
VOL
+
+
4
wd
qs
1
qh
w;
qd
ws
wa
wg
wf
E
Disc slot
To insert the disc (label side up). Playback 
starts automatically.
F
Display window
G
AUX input jack  
To connect a portab le audio device.
H Z 
(eject) button
To eject the disc.
I
 (front panel release) button  
J
BTM button  
To start the BTM function (press and hold).
K
SEEK –/+ buttons
CD:
To skip tracks (press); skip tracks 
continuously (press, then press again within 
about 1 second and hold); reverse/fast-
forward a track (press and hold).
Radio:
To tune in stations automatically (press); find 
a station manually (press and hold).
Bluetooth audio device*
1
:
To skip tracks (press).
L
MODE button  
To select the radio band (FM/MW/SW).
M
DSPL (display)/DIM (dimmer) button  
To change display items (press); change the 
display brightness (press and hold).
N
Frequency select switch
 (located on the 
bottom of the unit)
See “Frequency select switch” in the 
supplied installation/connections manual.
O
Number buttons
CD:
(1)/(2)
ALBM –/+
*
2
To skip albums (press); skip albums 
continuously (press and hold).
(3):
REP  
(4):
SHUF  
(6):
PAUSE
*
3
To pause playback. To cancel, press 
again.
Radio:
To receive stored stations (press); store 
stations (press and hold).
Bluetooth audio device*
1
:
(6):
PAUSE
To pause playback. To cancel, press 
again.
P
SCRL (scroll) button 
To scroll the display item.
Q
Receptor for the card remote 
commander
R
RESET button
(located behind the front 
panel)
  
S
Microphone  
Note
Do not cover the microphone, the handsfree 
function may not work properly.
The following buttons on the card remote 
commander have also different buttons/functions 
from the unit. Remove the insulation film before 
use.
w; <
 (
.
)/
,
 (
>
) buttons
The same as (SEEK) –/+ on the unit.
wa
VOL (volume) +/– button
To adjust volume.
ws
ATT (attenuate) button
To attenuate the sound. To cancel, press 
again.
wd
SEL (select)/
 (handsfree) button
The same as the select button on the unit.
wf M
 (+)/
m
 (–) buttons
To control CD, the same as (1)/(2)
(ALBM –/+) on the unit.
wg
Number buttons
To receive stored stations (press); store 
stations (press and hold).
*1
When a Bluetooth audio device (supports AVRCP 
of Bluetooth technology) is connected. Depending 
on the device, certain operations may not be 
available.
*2
When an MP3/WMA is played.
*3
When playing back on this unit.
Note
If the unit is turned off and the display disappears, it 
cannot be operated with the card remote commander 
unless 
(SOURCE)
 on the unit is pressed, or a disc is 
inserted to activate the unit first.
Tip
For details on how to replace the battery, see 
“Replacing the lithium battery of the card remote 
commander”. 
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