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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. 

Summary of Contents for XM-R281

Page 1: ...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 ...

Page 2: ...u 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 th...

Page 3: ...DM 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 Shor...

Page 4: ...tio 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 ...

Page 5: ...g 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 A...

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