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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