Dual Electronics Corporation MXD254B Operating instructions

INSTALLATION/OWNER'S MANUAL
AM/FM/CD Marine Receiver with
Auxiliary Input, USB Charging Port and Detachable Face
MXD254B
Charge Port

2
Preparation
KEYS
HEX BOLT
MOUNTING SLEEVE
PLAIN WASHER
HEX NUT
MOUNTING STRAP
TYPICAL MOUNTING METHOD
MXD254B INSTALLATION
Please read entire manual before installation.
Before You Start
•Disconnectnegativebatteryterminal.Consultaqualifiedtechnicianforinstructions.
•Avoidinstallingtheunitwhereitwouldbesubjecttohightemperatures,suchasfrom
directsunlight,orwhereitwouldbesubjecttodust,dirtorexcessivevibration.
Getting Started
•Remove2transitscrewslocatedontopoftheunit.
•Insertthesuppliedkeysintotheslotsasshown,andslidetheunitoutofthemounting
sleeve.
•Installmountingsleeveintoopening,bendingtabstosecure.
•Connectwiringharnessandantenna.Consultaqualifiedtechnicianifyouareunsure.
•Testforcorrectoperationandslideinto
mounting sleeve to secure.
•Snaptrimringintoplace.

3
Rear Preamp Output
Connect to amplifier RCA input
Antenna Connector
RCA Cable
(sold separately)
AMP
BLUE
BLACK
RED
YELLOW
Remote Turn-On
Connect to amplifier or power
antenna. Insulate wire if not used.
Ground
Connect to
chassis ground.
Accessory
Connect to ignition
circuit or switched 12 volt source.
Memory
Connect to battery
circuit or constant 12 volt source.
Right Front
Gray/Black (-)
Gray (+)
Left Front
White/Black (-)
White (+)
Right Rear
Violet/Black (-)
Violet (+)
Left Rear
Green/Black (-)
Green (+)
5 AMP
AGC Fuse
Wiring Diagram
FUSE
When replacing the fuse,
makesurenewfuseisthe
correct type and amperage.
Using an incorrect fuse
could damage the radio. The
MXD254B uses one 5 amp
AGC fuse located in-line.
* Caution-Donotattachanyspeakerleadstogroundasseveredamagewilloccur.
MXD254B INSTALLATION

4
Control Locations
Release
Mode
Power
Rotary Encoder
Preset 4/Play/Pause
Preset 1/Repeat
Preset 5
Preset 2/Random
Preset 3/Intro
Preset 6
1
2
3
4
5
6
7
8
9
10
Tune/TrackDown
Eject
Tune/TrackUp
EQ/Stereo/Mono
Auxiliary Input with Silicone Cover
Audio/Loudness
USB Charge with Silicone Cover
AS/PS
Band
Display
11
12
13
14
15
16
17
18
19
17 16
12 3 8
19 18
MXD254B OPERATION
The MXD254B has an easy-to-use interface that provides a rewarding experience, as
wellassupportforyourfavoritetunes.AudioCD-RandCD-RWdiscplaybackensures
compatibility with your music collection, and the RCA preamp output provides the right
connections to expand your system. From its front panel auxiliary input for connecting your
MP3 player, to the detachable face for security assurance, this head unit has you covered.
4 65 119 12 137 10
141520
20

5
General Operation
Press RELEASE and pull away from the left side to remove.
To re-install, insert right side of faceplate first then push left
side to secure.
Remove trim ring and install supplied #1 x 7/32” Phillips head
screw through left side of mounting frame into faceplate.
Press PWR to turn the unit on. Inserting a CD will turn the
unit on automatically. Press PWR to turn the unit off.
Press MODE to select between AM/FM, CD or auxiliary input.
Modes of operation are indicated in the display.
Press and hold LOUD for 2 seconds to activate and deactivate
the loud feature. Activating this feature will enhance the
bassandtreblefrequencieswhenlisteningtomusicatlow
volumes.
Insert a 3.5mm connector in the front panel AUX port.
Connect the other end of the 3.5mm connector to the
headphone output of an audio device, MP3 player, etc. Press
MODE to select AUX mode.
Adjustvolumeusingthe rotary encoder (00-46).
Press DISPtodisplaytheclock.Theradiofrequency(tuner
mode)andCDtrack/elapsedtime(CDplayermode)willbe
shown by default.
Press DISPtodisplaytheclock,thenrelease.Pressand
hold DISPfor2seconds,theclockwillbegintoflash.Press
TRACK
nn
toadjustthehoursandTRACK
ll
toadjust
theminutes.Clocksettingswillbesavedafter5seconds.
Theclockwilldisplay12-hourAM/PMtimeinUSAfrequency
spacingmode(PM10:00).InEuropeanfrequencyspacing
mode,theclockwilldisplay24-hourtime(22:00).
Press and hold for more than 2 seconds to RESET the unit
upon initial installation. The RESET button is located behind
the faceplate.
Faceplate Removal
Semi-permanent Faceplate
Installation
Power On/Off
Mode
Loud
Auxiliary Input
Volume
Display
Set the Clock
12/24-hour Clock
Reset
MXD254B OPERATION

6
General Operation
Insert the USB connector of a battery powered USB device
into the USB charging port on the front panel, which
provides 5 volts DC and 1.0 amps. The USB device will
immediately begin charging.
Note: The USB charging port may not be compatible with
everydeviceduetodifferencesinpowerrequirements.
Note: This USB port provides power only, and will not
playbackmusicfromaUSBdevice.
Press AUDIO to select between Volume (default), Bass,
Treble, Balance & Fader.
Press AUDIO until BA appears
Rotate the rotary encoderleft/righttoadjust
(-6 minimum / 6 maximum)
Press AUDIO until TR appears
Rotate the rotary encoderleft/righttoadjust
(-6 minimum / 6 maximum)
Press AUDIO until B appears
Rotate the rotary encoderleft/righttoadjust
(BL15/BR15)B00representsequalbalance.
Press AUDIO until F appears
Rotate the rotary encoderleft/righttoadjust
(FF15/FR15)F00representsequalbalance.
USB Charging Port
Select Audio
Bass
Treble
Balance
Fader
BASSVOLUME TREBLE BALANCE FADER
MXD254B OPERATION

7
Tuner Operation
Press TUNE
nn
or TUNE
ll
momentarilytoseekthe
next strong station.
Press TUNE
nn
or TUNE
ll
for more than 2 seconds,
then release. “MANU” will momentarily appear in the display.
Press TUNE
nn
or TUNE
ll
momentarily to move radio
frequencyupordownonestepatatime.Pressandholdto
advancequickly.Iftuningisnotadjustedfor5seconds,the
unitwillreturntoseektuningmode(default).“AUTO”will
momentarily appear in the display.
Press ST/MO for more than 2 seconds during FM tuner
operation to select mono or stereo (default) reception of the
broadcast signal.
Press BAND to select between FM1, FM2, FM3 and AM1, AM2
bands.
Press and hold BAND then press TUNE
nn
to select
Europeanfrequencyspacing.PressandholdBAND then
press TUNE
ll
toselectUSAfrequencyspacing(default).
Anytimefrequencyspacingischanged,allstationpresets
are erased.
Up to 18 FM stations and 12 AM stations can be stored.
To store a station, select the desired band and station.
Press and hold the desired preset button for more than 2
seconds. When stored, the preset number will appear in the
display. The station can be recalled anytime by pressing the
corresponding preset button.
Press AS/PS for more than 2 seconds to automatically store
the six strongest stations in the current band.
Press AS/PS momentarily to scan presets 1-6 on the current
band, pausing for 5 seconds at each. Press AS/PS again to
cancel.
Seek Tuning
Manual Tuning
FM Stereo/Mono
Band
Frequency Spacing
Storing and Recalling
Station Presets
Automatically Store
Stations
Preset Scan
MXD254B OPERATION

8
CD Player Operation
With the label facing up, insert a standard size CD into the
CDslot.TheCDwillautomaticallybeginplayback.
Press the EJECTbuttontostopandejecttheCD.
The unit will change to tuner mode.
Press TRACK
ll
toskiptothebeginningofthenexttrack.
Press TRACK
nn
to return to the beginning of the current
track.PressingTRACK
nn
againskipstothebeginningof
theprevioustrack.
Press and hold TRACK
ll
or TRACK
nn
to fast forward
orreverseatrack.
Press
l
/ II totemporarilystopCDplayback.
Press
l
/ II againtoresumeplayback.
Press INTtoplaythefirst10secondsofeachtrack.
Press INT to cancel.
Press RPTtocontinuouslyrepeatselectedtrack.
Press RPT to cancel.
Press RDMtoplayalltracksinrandomorder.
Press RDM again to cancel.
Some CD-Rs and CD-RWs may be incompatible with this
unit, depending on media type and recording method.
Note: CD-R recording sessions must be closed (finalized) for
playback.
Insert CD
Eject CD
Track Select
Fast Forward and Reverse
Pause
Intro
Repeat
Random
CD-R/CD-RW
Compatibility
MXD254B OPERATION

9
Troubleshooting
Problem Cause Action
Yellow wire not connected or incorrect voltage
Red wire not connected or incorrect voltage
Checkconnectionsforpropervoltage
(11~16VDC)
Blackwirenotconnected Checkconnectiontoground
Fuse blown Replace fuse
Speakerwiresnotconnected Checkconnectionsatspeakers
Oneormorespeakerwirestouchingeach
other or touching chassis ground
Insulateallbarespeakerwiresfrom
each other and chassis ground
Yellow or red wire touching chassis ground Checkforpinchedwire
Speakerwirestouchingchassisground Checkforpinchedwire
Incorrect fuse rating Use fuse with correct rating
Unitisnotmountedcorrectlyorbackstrapis
not secure
CD mechanism position out of alignment
CD transit screws still in place
Checkmountingsleeveandbackstrap
support
Physical defect in media (CD, CD-R or CD- RW) Checkmediaforscratches
Press EJECT for 3 seconds to reset
CD mechanism position
Remove 2 transit screws located on top
of the unit.
Unit will not turn on
(no power)
Unit has power
(but no sound)
Unit blows fuses
Excessiveskipping
Unit will not accept
a disc
Error Codes
Error Code Cause Action
ER-1 appears on display Disc error PressejectorRESET
ER-2 appears on display Mechanism error PressejectorRESET
ER-3 appears on display Servo error or disc is in upside down PressejectorRESET
MXD254B OPERATION

10
Limited One Year Warranty
This warranty gives you specific legal rights.
You may also have other rights which vary from
state to state.
Dual Electronics Corp. warrants this product to
the original purchaser to be free from defects in
materialandworkmanshipforaperiodofone
year from the date of the original purchase.
Dual Electronics Corp. agrees, at our option,
during the warranty period, to repair any defect
inmaterialorworkmanshiportofurnishan
equalnew,renewedorcomparableproduct
(whichever is deemed necessary) in exchange
withoutcharges,subjecttoverificationofthe
defect or malfunction and proof of the date of
purchase.Subsequentreplacementproducts
are warranted for the balance of the original
warranty period.
Who is covered? This warranty is extended to
the original retail purchaser for products
purchased and used in the U.S.A.
What is covered? This warranty covers all
defectsinmaterialandworkmanshipinthis
product. The following are not covered:
installation/removal costs, damage resulting
from accident, misuse, abuse, neglect, product
modification, improper installation, incorrect
line voltage, unauthorized repair or failure to
follow instructions supplied with the product,
or damage occurring during return shipment of
the product.
What to do?
1.Beforeyoucallforservice,checkthe
troubleshooting guide in your owner’s
manual.Aslightadjustmentofanycustom
controls may save you a service call.
2.Ifyourequireserviceduringthewarranty
period,youmustcarefullypacktheproduct
(preferablyintheoriginalpackage)andship
it by prepaid transportation with a copy of the
original receipt from the retailer to an
authorized service center.
3. Please describe your problem in writing and
include your name, a return UPS shipping
address (P.O. Box not acceptable), and a
daytime phone number with your shipment.
4. For more information and for the location of
the nearest authorized service center please
contact us by one of the following methods:
•Callustoll-freeat1-866-382-5476
•E-mailusat[email protected]
Exclusion of Certain Damages: This warranty
is exclusive and in lieu of any and all other
warranties, expressed or implied, including
without limitation the implied warranties of
merchantability and fitness for a particular
purpose and any obligation, liability, right,
claim or remedy in contract or tort, whether
or not arising from the company’s negligence,
actual or imputed. No person or representative
is authorized to assume for the company any
other liability in connection with the sale of
this product. In no event shall the company be
liableforindirect,incidentalorconsequential
damages.
MXD254B WARRANTY

11
MXD254B NOTES

Specifications
Frequencyresponse:20Hz-20kHz
Channelseparation@1kHz:>65dB
D/A converter: 1 Bit
Tuningrange:87.5MHz-107.9MHz
Usable sensitivity: 12dBf
50dBquietingsensitivity:16dBf
Stereoseparation@1kHz:40dB
Frequencyresponse:30Hz-13kHz
Tuningrange:530kHz-1710kHz
Usable sensitivity: 30uV
Frequencyresponse:80Hz-2kHz
Operating voltage: 11-16 VDC, negative ground
Speakeroutputimpedance:4~8ohms
Fuse: 5 amp AGC
Dimensions: 7" x 7" x 2" (178 x 178 x 51 mm)
Designandspecificationssubjecttochangewithoutnotice.
CD Player
FM Tuner
AM Tuner
General
CEA-2006 Power Standard Specifications
(reference:14.4VDC+/-0.2V,20Hz~20kHz)
Power Output: 5 Watts RMS x 4 channels at 4 ohms and <1%THD+N
Signal to noise ratio: 75dBA (reference: 1 watt into 4 ohms)
Dual Electronics Corp.
Toll Free: 1-866-382-5476
www.dualav.com
©2008 Dual Electronics Corp. All rights reserved.
NSA0608-V01