Xomax XM-R281 User manual

CAR AUDIO
CAR MP3 PLAYER WITH RADIO USB/SD/MMC MANUAL
XM-R281
1. Power on / off /Mode
2. TR: Color change
3. Change radio channel /
Search automatically/Storage button
(BND/AMS)
4. Radio memory number(1.2.3.4.5.6)
5. Radio search forward/Next song
/Answer the call
6. LCD
7. CLK: Clock
8. USB slot
9. AUX: Aux in
10. SD/MMC slot
11.Knob: Volume button/ Sound effect
chanage
12.Radio search backward/previous
song/Ring off
13. RST: Reset
14. 5/-10: Last 10 songs/Last folder
15. 6/+10: Next 10 songs/next folder
16. MIC
17. Fast charge USB
18.IR: Remote control receive window

1.Basic Operation
1. Power on / off
Short press this button to power on , long press to power off.
2. Volume button/ Sound effect change
Turn this button to control the volume. Press SEL to choose the sound effect as follows:
Volume—BASS—TREBLE——BAL-- FAD ---LOUND OFF/ON –BT -Volume)
When you choose the mode you need , you can turn VOL knob left or right VOL button
to select.
When you choose EQ function . You can turn left or right VOL knob to select as followed:
EQ POPS—ROCK—CLASS—FALT.
3.LCD
It shows radio frequency/and content of SD/USB.
4.FM button / Search and store automatically
In radio mode, repeatedly press this button to change the band: FM1-FM2-FM3. Radio
system will search and save the radio station into the memory number automatically.
5. Change mode button
Short press this button, you can choose the mode: Radio—SD/MMC—USB—AUX
IN--BT..
6. Radio memory number
In the radio mode, when you get the radio you like, You can long press any number
button (1—6) to save this radio station into this number. Such you press the number 2,
next time you press number 2, it will show the station directly.
7.Radio search backward button
In the radio mode, short press this button to search the radio backward automatically.
and it will stop and play when it get the radio station.
Long press this button (about three second) to search the radio by manual, then you
can short press this button to search the station, and if you don’t press any button for 5
seconds, it will quit this function.
8. Radio search forward
In the radio mode, short press this button to search the radio forward. and it will stop
and play when it get the radio station.
Long press this button (about three second) to search the radio by manual, then you
can short press this button to search the station, and if you don’t press any button for 5
seconds, it will quit this function.
9. Clock
Short press this button to display the current time. Long press this button until the clock
time flash ,then you can short press button(5) and (12) to adjust time (hour/minute)
respectively.

10. Aux in
Short press this button to go to AUX in, you can play external music by inserting in this
Aux in hole.
11.Reset button
When the system is crash, you press this button to restart.
12.SD/MMC slot
Insert SD/MMC card into slot, then put on the front panel. Then it will read the music of
the SD/MMC card.
14.USB slot
Insert USB disk into USB Slot. it will read the music in U disk..
15.
1). Insert SD/MMC/USB into slot , short press is pause function. short press again
can go on playing.
2).Insert SD/MMC/USB into slot, short press , it will read the next song .
3).Insert SD/MMC/USB into slot, short press , it will read the previous song .
4). Insert SD/MMC/USB into slot , short press INT is scan function.
5). Insert SD/MMC/USB into slot , short press RPT is repeat function.
6). Insert SD/MMC/USB into slot , short press RDM is random play function.
7). Insert SD/MMC/USB into slot , short press -10/6 last 10 songs function Long press is
last file function .
8). Insert SD/MMC/USB into slot , short press +10/6 next 10 songs function.
Long press is next folder function
16. Fast charge USB
This USB slot only for cellphone charge .
17.TR ( Change 7 color button)
After power on . It will change one color automatically for every 3 seconds. Short press
this button to choose only one color. And press again to choose another color. And
press two times It will go back to change seven color automatically again. Long press
this button to power off the color light.
2. BT operation
1.BT is turned on by default when you power on the player . Short press MODE to
select BT MODE . And you will see the BT symbol flashing all the time . When the
mobile phone succeed in connecting with BT .The symbol would not flashing .
2.In the BT mode . You can play the music of the mobile phone through the BT .
3.In the BT mode. Short press to answer and ring off the call .

3.Technical Parameters
Tuner Part:
FM Frequency Range------------------------------------------------------87.5MHz-108MHz
FM noise-limited sensitivity-----------------------------------------------------------FM≤26dB
FM signal to noise ratio (S/N)------------------------------------------------------------≥45dB
USB/MMC/SD Part:
Frequency Response---------------------------------------------------100Hz-10kHz(+10dB)
MP3 bit rates------------------------------------------------------------------------------8-320kbps
Channel balance---------------------------------------------------------------------------≤3 dB
Channel Separation ------------------------------------------------------------------- ≤22dB
MP3 Signal to noise ratio (S/N)---------------------------------------------------------≥55dB
Working voltage -------------------------------------------------------------------------12V DC
Real power output-------------------------------------------------------------------4x60W/14.4V
Speaker impedance ---------------------------------------------------------------------4Ω-8Ω
Size dimension--------------------------------------------180mm(W)x52mm(H) vx115mm(L)
4.Wiring Diagram
Fault
Reasons
Solutions

Note: Technical data is subject to change without prior notify.
LCD doesn’t
display
1. Yellow wire is not connected
with battery +
2. Fuse of red wire is open
Assure yellow wire is
connected with battery +
Replace fuse
No sound 1. No power supply
2. Speaker wire is open circuit
3. SD/MMC card, U disk don’t
have song with
corresponding format.
4. SD/MMC card, U disk golden
finger is dirt which causes
bad contact.
Connect the power wire.
Connect speaker wire.
Check the contents of
SD/MMC card, U disk.
Clean with absolute
alcohol.
Low sound (not
clear)
1. Power internal resistance is
high.
2. Antenna is bad contact.
Replace the power
supply
Tighten the antenna
plug.
Mono track 1. One channel of speaker wire
is open circuit
2. Amplifier integrated circuit is
damaged.
Connect speaker wire
Replace the IC of
amplifier
5. Trouble shooting