CONTENTS Precautions..............................1 How to Handle Discs..........................1 Lithium Battery Cell Warnings........................ 1 Installation ..............................2 Prepare Radio............................2 Mount Radio............................2-3 Wiring Connections..........................3 Removal of the Main Unit ........................3 Control Panel Button Locations ........................4 General Operation ............................5 Turn Unit On/Off.............................
PRECAUTIONS How to Handle Discs Handle a disc by its edges. Do not touch the playing side. Before inserting a disc, wipe the disc outward from the disc center with a clean, soft, dry and lint-free cloth. Do not use solvents or thinners such a petrol/benzene or cleaners.
INSTALLATION Prepare Radio Before you begin, disconnect the battery negative terminal. Remove the transport screws. Remove chassis from the mounting sleeve. BRACKET KEY PLASTIC TRIM OUT BRACKET KEY If you want to remove the chassis from the mounting sleeve, remove the plastic trim out from both sides.
INSTALLATION (CONT.) INSTALLATION DIAGRAM DASH BOARD HEX NUT METAL MOUNTING STRAP SPRING WASHER CONSOLE PLAIN WASHER TAPPING SCREW MOUNTING SLEEVE HEX BOLT - Only use speakers with 4 ohm impedance. - Do not attach the control panel to the chassis before wiring is complete. - The maximum current of the Amp Remote trigger is 200mA.
CONTROL PANEL BUTTON LOCATIONS MR508UABW: MR508UABS: POWER/SRC (source) button SEL (select/menu) button and VOL (volume) knob BAND/AMS (automatic music search) and button >|| or 1 button INT (intro) or 2 button RPT (repeat) or 3 button RDM (random) or 4 button...
GENERAL OPERATION Turn Unit On/Off Press the power ( ) /SRC button to turn on the unit. Press and hold it to turn off the unit. Press the power ( ) button on the remote control to turn the unit on or off. Adjust Volume (VOL) Rotate the knob on the front panel or press the VOL+/-...
RADIO OPERATION Switch Between US and EU Frequency In radio mode, press and hold the VOL button to select the AREA EU/US, then rotate it to switch between US (USA) and EU (Europe) frequency. The system will change the frequency setting in about 3 seconds.
DISC/USB/CARD OPERATION Insert Disc/USB/SD To play on a disc, insert a disc with the label surface up into the disc slot. Playback will begin automatically. To play on a USB/SD device, open the USB port cover and insert the USB/SD storage device into the USB/SD port.
DISC/USB/CARD OPERATION Track Search During CD, USB or SD playback, press the AMS button to select one of the following 3 track search modes: 1) NUM SCH (Searching by track number) 2) DIR SCH (Searching by directory number) 3) FILE SCH (Searching by track or file name) 1) NUM SCH (Searching by track number) a) In playback of CD or files with MP3 format, press the button once to access the track...
To begin pairing, enable BT mode on your mobile phone. 2. When the phone the car audio system, the BOSS MR508UABW(S) will be displayed. 3. Choose the BOSS MR508UABW(S) from the device list to pair and connect with the car audio system. Upon the BT logo will stop 4.
REMOTE CONTROL Remove Insulating Sheet The remote control comes with an insulating sheet attached to the underside of the remote control, as illustrated on the right. The remote control will not work until the insulating sheet is removed. Replace Lithium Battery Cell When the lithium cell battery becomes weak, replace it as illustrated on the right.
REMOTE CONTROL (CONT.) Button Names and Locations Power button BAND or button >|| or 1 button + 10 or 6 button NEXT button MUTE or DEL button - 10 or 5 button SEL (select) button AMS (automatic music search) or 9 button LOUD (loudness) or 8 button RPT (repeat) or 3 button 12.
TROUBLESHOOTING Symptom Cause Solution No Power Car ignition not on Switch ignition key to “ACC” Fuse blown Replace fuse Disc cannot be loaded Another disc is already in the Eject disc and insert new player Disc cannot be read Disc was inserted upside Insert disc with label facing down upward...
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SPECIFICATIONS General Power Supply Requirement................... DC 12V Current Consumption ....................15A MAX Maximum Power Output ...................50W x 4CH Radio USA/Europe............... 87.5 MHz - 107.9 MHz/87.5 - 108.0 MHz Usable Sensitivity ......................30 dBu I.F. Frequency......................10.7 MHz USA/Europe..............530 KHz - 1710 KHz/522 - 1620 KHz Usable Sensitivity ......................20 dBu I.F.