BOSS MP3-Compatible Digital Media AM FM Receiver User Manual

USER’S MANUAL
MR400UAB

BLUETOOTH® ⌊ FULLY MARINIZED
MP3-C0MPATIBLE DIGITAL MEDIA
AM/FM RECEIVER

PRECAUTIONS

Take Precaution

• To reduce the risk of fire, electric shock, and annoying interference, do not repair yourself. Please refer serving to a qualified person.
•  Some MP3NVMA files may not be playable.
•  Keep lower volumes to concentrate on traffic and road conditions.
• If the battery is disconnected or discharged or changed, the preset memory will be erased and must be reprogrammed.
•  Installation of the unit is better at a horizontal position, or if it is at an angle, it may be not working at its best situation.
• Be sure to lower the volume before switching off the unit or the ignition key.

INSTALLATION

Installation Procedures
First, complete the electrical connections and then check for correctness.
Installation Opening
This unit can be installed in any dashboard Having an opening as shown below.

Insert the mounting collar into the dashboard and bend the mounting tabs out with a screwdriver.
Make sure that the lock lever is flush with the mounting collar( not projecting outward).

**– Only use speakers with 4 ohms impedance.
– The maximum current of the auto antenna is 200mA.
Wiring Connections **

Removal of the Main Unit

1.  Remove the plastic trim out from the main unit.
2. Insert a bracket key into the left and right side of the main unit and draw the unit out of the mounting sleeve.

CONTROL PANEL BUTTON LOCATIONS

OPERATION

POWER/SRC
Press the POWER button to turn on the unit, and long-press it again to turn off the unit.
When the unit turns on, short press the POWER/SRC button to switch the unit between RADIO. USB. BE AUX IN.modes (it there are USB inside the unit).

1/. If there is no USB, then it will be only a radio. BT and Aux. When the user inserts a USB flash memory device. their respective logos will illuminate on the display.

2 – 7.(button 1 to 6) PRESET MEMORY BUTTONS In Radio mode

To memorize the frequency. press one of the six preset buttons(1.6) holds for more rs. the frequency is successfully stored.
Therefore there are FM1,FM2.FM3,AM1 & AM2,each band can store 6 stations.so total 30 stations can be stored.
To recall the preset memory station. Press one of the preset buttons(1-6) plus the BND bunion for FM1. FM2,FM3AM1 & AM2.
During USB mode, press the ‘1/ MI ‘ button to pause or resume music playback.
Press the ‘2/INT’ button to play the first 10 seconds of each track, press again to stop the introduction scan, and play the current track.
Press the ‘3/RPT’ button to toggle between RPT ALL (Play all track). RPT FLR (Continuously repeats all tracks in the current folder) and RPT ONE (Continuously repeats current track).
Press the ‘4/RDM’ button to play all tracks in random order, press again to cancel random playback. During USB mode. press 5/-10 button to go backward 10 tracks.
Press the ‘6/+10’ button to jump toward 10 tracks.
During USB mode, long press’5/-10’button to go back 1 folder.
Long press the ‘6/+10’ button to go up 1 folder. You can repeat this function depending on the number of folders. This button will have no function if the USB has no folders.

8. CLK/MUTE

Press and hold the CLK button once to display the real-time. With time appearing on the display.
Press and hold the CLK button for more than 2 seconds until the hour flashes. You can adjust the HOUR by pressing the Pool button and button. Then press the CLK button briefly, the minute will flash, you can adjust the MINUTE by pressing the buttons and button.
Finally, press the CLK button to confirm the time adjustments.
Short press the MUTE button to turn MUTE ON/OFF. when it is on, the MUTE will be flash on the LCD and no sound output. When short press again it will be canceled.

9. USB Port
10. VOLUME adjustment

Rotate the volume knob to increase or decrease the volume level of the sound output.
Press the SEL button repeatedly to cycle through the following adjustable audio functions:
ILL MID/HI/LOW, BASS, TREBLE, BALANCE, FADER, EQ OFF, CLASS/ROCK/POP/ FLAT, LOUD ON/OFF, DX/LOC, STEREO/MONO, CLOCK 12/24, AREA US/EU.
• Rotate the VOL knob to adjust the selected item.
– ILL MID/HI/LOW: This receiver is equipped with 3 brightness settings.
Rotate the volume knob to preset the illumination to the middle, high, or low.
– BASS: -7, -6, ~, -1, 0, +1, ~, +6, +7
– TREBLE: -7,-6, ~, -1, 0,+01,~, +6, +7
– BALANCE: L7, L6,~, L1, 0, R1,~,R6, R7
– FADER: R7,R6, ~, R1,0, F1,~,F6, F7
– EQ(Equalizer) Setting: OFF, CLASS, ROCK, POP, FLAT
– Loudness: LOUD ON/OFF
– DX/LOCAL: Enables or disables the local broadcast mode (LOCAL).
– Stereo/Mono: Switches between MONO and STEREO reception mode for radio frequencies.
– CLOCK 12/24: Select between 12 hours and 24 hours display.
Note: If 12-hour display is selected, AM= Morning; PM= Afternoon
– AREA US/EU: This car radio is equipped with the USA / Europe frequency.
Rotate the volume knob to switch between USA and Europe frequency.
The system will change the frequency setting in about 3 seconds.

11. FF( ) &12.FB( )
In the radio mode:
Long press the or button for more than 2 seconds, the unit will switch to manual tuning mode, briefly press the or button to search the next or previous frequency step by step. Short press the or button, the automatic search will start, it will search upward or downward for the strong signal radio station within the current band. The  auto searching will stop until finding a station.
In the USB playback:
Briefly press the or button to play the next or previous track.
Press and hold the or button to fast forward or fast backward.

12. BND/AMS
In radio mode, short press the BND/AMS button repeatedly to select one of the radio band: FM 1,
FM 2,FM 3, AM1,AM2 in a cycle sequence. When you select a band, the word F1、F2、F3 for FM band,
and A1, A2 for AM band will be shown on the LCD display.

Press the BND/AMS button for several seconds, the radio searches from the current frequency and check the signal strength until one cycle search is finished. When the 6 strongest stations will be stored into the corresponding preset number within the current band.

During USB playback, press and hold the BND/AMS button to enter track search mode, the “TRK 0000”
will appear on the display. Rotate the VOL knob to select the “first number”. Then press the button to move the “first number” to the left and enter the next number. Finally, press the SEL button to confirm and play the selected track. If no operation in 5 seconds, it will play the current track.
14. AUX-IN JACK
15. RESET
To reset all parameters to factory default values. Use a subject with a sharp point end to thrush the RESET hole.

BLUETOOTH OPERATION

Pair and Connect
Prior to using the Bluetooth device as a handsfree system for a Bluetooth- enabled mobile phone for the first
time, you must pair and connect the two devices as follows:
1. In any mode, prior to pairing and connecting, the BT logo flashes in the LCD indicating that no device is connected. To begin pairing, enable BT mode on your mobile phone.
2. When the phone finds the car audio system, the BOSS MR400UAB will be displayed.
3. Choose the BOSS MR400UAB from the device list to pair and connect with the car audio system. Upon confirming, the BT logo will stop flashing.
4. When pairing is complete, the mobile phone audio will automatically transfer to the car audio system whenever a call is made or received, or when the mobile phone plays music.
Make a Call
• To make a call, dial the call directly from the paired mobile phone.
Redial Last Dialed Number
Press and hold the button on the control panel to redial the last dialed phone number.
Answer a Call

•  When the mobile phone is called, the incoming telephone number displays on the LCD.
• To receive the call, press the button on the control panel.

Reject a Call
To reject a call, press the  button.
End a Call
To reject an active call, press the button.
Switch Audio Between Car and Phone
During a call, press the VOL knob/button to switch the audio source from the car audio system back to your mobile phone.
Adjust Talk Volume

•  During a call, use the VOL knob to adjust the volume level.
•  Use the MUTE button to mute the sound.

Audio Streaming (A2DP)

1.  Press the /SRC button to enter BT mode and display pause in the LCD.
2. When a mobile device is paired, music played through that device will automatically be heard through the car audio system.
3.  Press the or button to play the next or previous song/file on the mobile phone.
4. Press the button to pause or resume music playback.

TROUBLESHOOTING

If you suspect something is wrong, immediately switch the power off. Do not use the unit in abnormal conditions, for example without sound, or with smoke or foul smell, which can cause fire or electric shock.
Immediately stop using it and call the store where you purchased it. Never try to repair the unit by yourself because it is dangerous to do so.
General

1. Car’s engine switch is not on.
   Turn you car’s key to ACC or ON.

2.   Cable is not correctly connected.
   Check the connection.

3.   Fuse is burnt.
   Replace fuse.

4. Volume is in mute or minimum.
   Check volume or mute on/off, adjust the volume to the desired level.

5.   Sound skips.
   The installation angle is more than 30°. Adjust the installation angle to less than 30°.

6. The operation keys do not work.
   The built-in microcomputer is not operating properly due to noise. Press the RESET button to restore the program to zero.

Radio

1.   Much noise in broadcasts.
   Station or signal is too weak. Select other stations of stronger signal level.

2. The antenna cable is not connected.
   Insert the antenna cable firmly into the antenna socket of this car radio.

3.   Preset station is reset.
   Battery cable is not correctly connected. Connect the battery cable to the terminal that is always live.

USB
USB is connecting but no sound
a) USB connection is not good. Take it out and insert it again.
b) USB is damaged or no music file inside. Change to another USB, or record music inside it.

SPECIFICATIONS

Power supply Requirement :              Maximum power output : Speaker impedance :
Unit Dimensions(WxHxD) :                 Weight :
Fuse :| DC 2V
50W×4CH
4-8Ohm
7.0×2.0×3.8 inch
1.54Lb(0.70 kg)
15A
---|---

RADIO

FM

Frequency Range USA / EUROPE:

Channel step:

|  87.5 MHz – 107.9 MHz / 87.5 MHz – 108.0MHz
200 KHz / 50 KHz

AM

Frequency Range USA / EUROPE:
Channel step:| 530 KHz – 1710 KHz / 522-1620 KHz
10 KHz / 9 KHz

USB

Usable Audio Formats
USB Port Type
USB Charging
Pre-amp Output
Frequency Response
S/N Ratio| MP3/WMA
2.0
5V/1A
Front and Rear
20 Hz – 20 kHz
60dB

BT

BT Profile supports
Range  of  frequency| A2DP, AVRCP & HFP

2.4GHz spectrum

MR400UAB

BLUETOOTH FULLY MARINIZED
MP3-COMPATIBLE DIGITAL MEDIA AM/FM RECEIVER
3451 Lunar Court • Oxnard, CA 93030 www.bossaudio.com 800-999-1236 US Toll- free 805-751-4853 Customer Service Tech Support: www.bossaudio.com/support/technical- support

iPode and iPhones are trademarks of Apple. Inc. registered in the U.S. and other countries. BOSS Audio Systems is not affiliated with Apple, Inc. or (=role, Inc. The Bluetooth word mark and k:g0S are registered trademarks owned by Bluetooth SIG, Inc. and any use 01 Such marks by BOSS Audio Systems is under license. Other trademarks and trade names are those of their respective owners.

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