Dual MXD254B User Manual

MXD254B  
INSTALLATION/OWNER'S MANUAL  
AM/FM/CD Marine Receiver with  
Auxiliary Input, USB Charging Port and Detachable Face  
Charge Port  
MXD254B INSTALLATION  
Wiring Diagram  
Rear Preamp Output  
Connect to amplifier RCA input  
RCA Cable  
(sold separately)  
Antenna Connector  
BLUE Remote Turn-On  
Connect to amplifier or power  
AMP  
antenna. Insulate wire if not used.  
BLACK Ground  
Connect to  
chassis ground.  
RED Accessory  
Connect to ignition  
circuit or switched 12 volt source.  
5 AMP  
AGC Fuse  
YELLOW Memory  
FUSE  
Connect to battery  
circuit or constant 12 volt source.  
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.  
Right Front  
Gray/Black (-)  
Gray (+)  
Right Rear  
Violet/Black (-)  
Violet (+)  
Left Front  
White/Black (-)  
White (+)  
Left Rear  
Green/Black (-)  
Green (+)  
* Caution - Do not attach any speaker leads to ground as severe damage will occur.  
3
MXD254B OPERATION  
Control Locations  
1
2
3
4
5
6
7
8
9
10 11 12 13  
20 19 18 17 16 15 14  
Release  
Mode  
Tune/Track Down  
Eject  
1
2
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
Power  
Tune/Track Up  
EQ/Stereo/Mono  
Auxiliary Input with Silicone Cover  
Audio/Loudness  
USB Charge with Silicone Cover  
AS/PS  
3
Rotary Encoder  
Preset 4/Play/Pause  
Preset 1/Repeat  
Preset 5  
4
5
6
7
Preset 2/Random  
Preset 3/Intro  
Preset 6  
8
Band  
9
Display  
10  
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
MXD254B OPERATION  
General Operation  
Faceplate Removal  
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.  
Semi-permanent Faceplate  
Installation  
Press PWR to turn the unit on. Inserting a CD will turn the  
unit on automatically. Press PWR to turn the unit off.  
Power On/Off  
Mode  
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.  
Loud  
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.  
Auxiliary Input  
Adjust volume using the rotary encoder (00-46).  
Volume  
Display  
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  
Set the Clock  
hold DISP for 2 seconds, the clock will begin to flash. Press  
TRACK  
to adjust the hours and TRACK  
to adjust  
nn  
ll  
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).  
12/24-hour Clock  
Reset  
Press and hold for more than 2 seconds to RESET the unit  
upon initial installation. The RESET button is located behind  
the faceplate.  
5
MXD254B OPERATION  
General Operation  
USB Charging Port  
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.  
Select Audio  
Press AUDIO to select between Volume (default), Bass,  
Treble, Balance & Fader.  
VOLUME  
BASS TREBLE  
BALANCE  
FADER  
Bass  
Treble  
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)  
Balance  
Fader  
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.  
6
MXD254B OPERATION  
Tuner Operation  
Seek Tuning  
Press TUNE  
next strong station.  
or TUNE  
momentarily to seek the  
nn  
ll  
Manual Tuning  
Press TUNE  
or TUNE  
for more than 2 seconds,  
nn  
ll  
then release. “MANU” will momentarily appear in the display.  
Press TUNE  
or TUNE  
momentarily to move radio  
nn  
ll  
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.  
FM Stereo/Mono  
Press ST/MO for more than 2 seconds during FM tuner  
operation to select mono or stereo (default) reception of the  
broadcast signal.  
Band  
Press BAND to select between FM1, FM2, FM3 and AM1, AM2  
bands.  
Frequency Spacing  
Press and hold BAND then press TUNE  
to select  
nn  
European frequency spacing. Press and hold BAND then  
press TUNE to select USA frequency spacing (default).  
ll  
Anytime frequency spacing is changed, all station presets  
are erased.  
Storing and Recalling  
Station Presets  
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.  
Automatically Store  
Stations  
Press AS/PS for more than 2 seconds to automatically store  
the six strongest stations in the current band.  
Preset Scan  
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.  
7
MXD254B OPERATION  
CD Player Operation  
Insert CD With the label facing up, insert a standard size CD into the  
CD slot. The CD will automatically begin playback.  
Eject CD Press the EJECT button to stop and eject the CD.  
The unit will change to tuner mode.  
Track Select Press TRACK  
to skip to the beginning of the next track.  
to return to the beginning of the current  
ll  
nn  
Press TRACK  
track. Pressing TRACK  
the previous track.  
again skips to the beginning of  
nn  
Fast Forward and Reverse Press and hold TRACK  
or TRACK  
to fast forward  
ll  
nn  
or reverse a track.  
Pause Press  
/
/
II to temporarily stop CD playback.  
II again to resume playback.  
l
l
Press  
Intro Press INT to play the first 10 seconds of each track.  
Press INT to cancel.  
Repeat Press RPT to continuously repeat selected track.  
Press RPT to cancel.  
Random Press RDM to play all tracks in random order.  
Press RDM again to cancel.  
CD-R/CD-RW Some CD-Rs and CD-RWs may be incompatible with this  
Compatibility unit, depending on media type and recording method.  
Note: CD-R recording sessions must be closed (finalized) for  
playback.  
8
MXD254B OPERATION  
Troubleshooting  
Problem  
Cause  
Action  
Unit will not turn on  
(no power)  
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  
Fuse blown  
Check connection to ground  
Replace fuse  
Unit has power  
(but no sound)  
Speaker wires not connected  
Check connections at speakers  
One or more speaker wires touching each  
Insulate all bare speaker wires from  
other or touching chassis ground  
each other and chassis ground  
Unit blows fuses  
Yellow or red wire touching chassis ground  
Speaker wires touching chassis ground  
Incorrect fuse rating  
Check for pinched wire  
Check for pinched wire  
Use fuse with correct rating  
Excessive skipping  
Unit is not mounted correctly or backstrap is Check mounting sleeve and backstrap  
not secure  
support  
Physical defect in media (CD, CD-R or CD-RW)  
CD mechanism position out of alignment  
Check media for scratches  
Unit will not accept  
a disc  
Press EJECT for 3 seconds to reset  
CD mechanism position  
CD transit screws still in place  
Remove 2 transit screws located on top  
of the unit.  
Error Codes  
Error Code  
ER-1 appears on display  
ER-2 appears on display  
ER-3 appears on display  
Cause  
Disc error  
Action  
Press eject or RESET  
Press eject or RESET  
Press eject or RESET  
Mechanism error  
Servo error or disc is in upside down  
9
MXD254B WARRANTY  
Limited One Year Warranty  
This warranty gives you specific legal rights.  
You may also have other rights which vary from  
state to state.  
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.  
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.  
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.  
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.  
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:  
Who is covered? This warranty is extended to  
the original retail purchaser for products  
purchased and used in the U.S.A.  
• Call us toll-free at 1-866-382-5476  
• E-mail us at [email protected]  
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.  
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.  
10  
MXD254B NOTES  
11  
Specifications  
CD Player Frequency response: 20Hz-20kHz  
Channel separation @ 1kHz: >65dB  
D/A converter: 1 Bit  
FM Tuner Tuning range: 87.5MHz-107.9MHz  
Usable sensitivity: 12dBf  
50dB quieting sensitivity: 16dBf  
Stereo separation @ 1kHz: 40dB  
Frequency response: 30Hz-13kHz  
AM Tuner Tuning range: 530kHz-1710kHz  
Usable sensitivity: 30uV  
Frequency response: 80Hz-2kHz  
General 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.  
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  
©2008 Dual Electronics Corp. All rights reserved.  
NSA0608-V01  

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