Boss marine MR2020G User manual

Installation ....................................................................................................3
Wiring Connection ........................................................................................4
Operation.......................................................................................................5
General Operation ................................................................................................5
Radio Operation ...................................................................................................7
CD Operation ........................................................................................................8
CD Changer Operation ..........................................................................................9
Marine remoto .....................................................................................................10
Specification................................................................................................13
Trouble Shooting.........................................................................................14
2
CONTENTS

3
TAKE OUT SCREWS BEFORE INSTALL
Before install the unit, please remove the
two screws.
NOTE: This unit is installed on the ship,
so you should use two pieces of plastic
film (30mmX20mm) supplied with the unit
to seal the two holes after remove the
screws. And this will be waterproof.
INSTALL THE UNIT
1. According to the mounting paper
supplied with the unit, determine the
mounting location in the dashboard,
and then stick the paper to the
dashboard.
2. Then cut and remove the part of the
dashboard in a rectangle shape the
same as the hatching area on the
mounting paper. And then drill four
mounting holes (ø5) in the exact
position also according to the mounting
paper.
3. Use the glue paper to stick the two
mounting bracket to the back of the
dashboard. The screw holes of the
brackets must respectively aim at the
mounting holes in order to fix the unit
to the dashboard.
4. Open the two pieces of rubber cover
on the unit to display the four screw
holes, and then use four screws
(M4X30) to mount the unit to the
dashboard with the mounting plate
between the dashboard and the unit.
Note: If you don’t install the unit
according to the installation instructions
above, the main unit will not be up to
the IPX5 waterproof standard.
INSTALLATION
Take out screw before install.
Mounting paper
Dashboard
Dashboard
Mounting Location
Mounting holes
Dashboard
Mounting Bracket
Dashboard
Mounting plate
Rubber cover
Screw (M4x30)
Rubber cover
Mounting plate

4
WIRING CONNECTION
FRONT Lch
SPEAKER
GREEN
GREEN/BLACK
Constant
12 Volts
MAIN UNIT
Rch RED
Lch WHITE
AUX IN
IGNITION
SWITCH (B+)
POWER
ANTENNA
RED
GROUND (B–)
YELLOW
BLACK
BLUE REAR RCA CABLE
(YELLOW)
ANTENNA CONNECTOR
(GREY)
Rch RED
Lch WHITE
WHITE
WHITE/BLACK
REAR Lch
SPEAKER
CD CHANGER
CONNECTOR
SOCKET
(BLACK)
VIOLET
VIOLET/BLACK
GREY
GREY/BLACK
FRONT Lch
SPEAKER
REAR Rch
SPEAKER
FRONT RCA CABLE
(BROWN)
Rch RED
Lch WHITE
WIRING REMOTE
CONNECTOR
SOCKET
(BLACK)
(BLACK)
I.R. REMOTE
SENSOR SOCKET

5
GENERAL OPERATION
• ON/OFF
Switch on the unit by pressing POWER
button (9). When system is on, press
POWER button (9) again to turn off the
unit.
• DISPLAY THE DISC SLOT
Press the hook (7) of the plastic disc
cover then poke it at a slight downward
force to let the cover open, then you
can see the disc slot (5).
When you want to close the disc cover,
push the hook into proper location at
a horizontal force.
OPERATION
Hook
12
7
10
18
2321 22
119
1
133
25
19
241420
6 15
16
82 4
17
526
When pull open the disc cover:

• SOUND ADJUSTMENT
Press SEL button (10) to select desired
audio mode.
The adjustment mode will change in
the following order.
By pressing VOLUME button (11) or
VOLUME (12), it is possible to adjust
the desired sound quality.
• RECOVER INITIAL VALUE
Press MODE button (6) for more than
three seconds, the display will appear
“EEPS”, and all settings recover factory
value.
• EQUALIZATION
Press EQ button (19) to turn on
equalization function and to select
desired audio mode.
POP JAZZ CLASSIC JAM
FLAT ROCK
• REMOTE VOLUME
By pressing REMOTE VOLUME
button (19) or REMOTE VOLUME
(25), it is possible to adjust the volume
level of the rear speakers.
• AUDIO BEEP
Press SEL button (10) for more than 2
seconds to turn beep on/off. When
beep is on, “ (((•))) ” icon appears in the
display. If you select beep sound on,
whenever press any button, beep
sound output.
• LOUDNESS
Press LOUD (DIM) button (15) shortly
to reinforce the bass output and display
will show “LOUD”. Press it again to
release this function.
• ILLUMINATION
Press LOUD (DIM) button (15) for more
than 2 seconds to adjust the brightness
of the LCD display backlight.
• MUTE
In radio/AUX IN mode, press
/MUTE button (3) to mute audio level.
Press the button again to release mute
function.
• SELECT MODE
Press MODE button (6) to choose
desired listening mode. (e.g. radio
mode to CD mode to CDC mode to
AUX IN mode.
• SET THE CLOCK
Press DSP button (1) for more than 2
seconds until the clock is shown on
the display and flashes. Then press the
CONTROL button (17) to change
minutes or CONTROL button (16)
to change hours.
• DISPLAY PRIORITY
Clock Priority
Press and hold DSP button (1) while
pressing CONTROL button (16) to
select Clock Priority.
Pressing DSP button (1) while in Clock
Priority will temporarily display selected
station frequency (in RADIO mode) or
track number (in CD/CDC mode) or
state information (in AUX IN mode).
Frequency Priority
Press and hold DSP button (1) while
pressing CONTROL button (17) to
select Frequency Priority.
Pressing DSP button (1) while in
Frequency Priority will temporarily
display clock.
• SELECTABLE CLOCK DISPLAY
Programs the unit to display the clock
(selectable on/off) when the unit is
turned off. While the unit is turned on,
pressing and holding MODE button (6)
and then pressing M2 button (21)
toggles the selectable clock display.
• LIQUID CRYSTAL DISPLAY
Exhibit current frequency and activated
functions on the display (8).
•LAST STATE MEMORY
In radio, CD, AUX or CDC mode, when
disconnect the ACC wire and B+ wire,
the unit will memorize the
last information (volume level, current
station, Radio station PRESET-
MEMORY, CD track number when
stopped and etc.).
When reconnect the two wires again,
the last information is recalled. For
example, if you are listening to the
station FM1 89.8Hz, when disconnect
the ACC wire and B+ wire and then
reconnect the two wires again, it will
6
OPERATION
Volume Bass Treble Balance

start to listen to the FM1 89.8Hz.
Note: In CDC mode, the unit can’t
memorize the track number and disc
information.
• RESET
When you pull out the plastic panel
covering the CD opening, you will see
the reset button (26) is placed above
the disc slot (5). It must be activated
with either a ballpoint pen or thin metal
object. The reset button is to be
activated for the following reasons:
- Initial installation of the unit when all
wiring is completed.
- All the function buttons do not
operate.
- Error symbol on the display.
RADIO OPERATION
• BAND SELECTION
At tuner mode, press BAND button
(18) shortly to select the desired band.
The reception band will change in the
following order:
• STATION SELECTION
Press TRK/TUNE button (16) or
TRK/TUNE button (17) shortly to
activate automatic seek function.
Press for more than 3 seconds until
“MAN” appears on the display, the
manual tuning mode is selected. If both
buttons have not pressed for several
seconds, they will return to seek tuning
mode and “AUTO” appears on the
display.
• AUTOMATICALLY MEMORY
STORING & PROGRAM SCANNING
- Automatic memory storing
Press AS/PS (ELAPSE) button (2) for
more than 2 seconds, the radio
searches from the current frequency
and checks the signal strength until
6 strongest stations are stored into
the corresponding preset number
button. When all completed, it will
change to scan preset station
automatically.
- Program scanning
Press AS/PS (ELAPSE) button (2)
shortly to scan preset station. The
radio is holding at that preset number
for several seconds, and then
searches again. Press AS/PS
(ELAPSE) button (2) again to stop
scanning when desired station is
reached.
• STATION STORING
Press any one of the preset buttons
(14) (M1 to M5) (i.e.20~24) to select a
station which had been stored in the
memory. Press this button for several
seconds, current station is stored into
the number button.
•MONO/STEREO
Press MODE button (25) to select
mono or stereo reception of stations.
You can sometimes improve reception
of distant stations by selection mono
operation.
• SCAN
Press SCAN button (13) to scan
through strong stations in the current
band. Radio pauses for five seconds
at each strong station. At each time
the frequency is flashing on the display.
Press SCAN button (13) again to listen
to current station.
• SELECTABLE FREQUENCY
SPACING (FOR USA VERSION ONLY)
Programs the unit for USA or European
radio frequency spacing. While in radio
mode, pressing and holding BAND
button (18) and then pressing
TRK/TUNE button (17) or
TRK/TUNE button (16) toggles
between USA or European frequency
spacing.
- Pressing and holding BAND button
(18) and then pressing TRK/TUNE
button (17) selects USA frequency
spacing.
- Pressing and holding BAND button
(18) and then pressing TRK/TUNE
button (16) selects European
frequency spacing.
7
OPERATION
FM1 FM2 FM3 AM1

* USA radio spacing is 200k for FM
and 10k for AM. This is the default
frequency spacing.
* European radio spacing is 50k for FM
and 9k for AM.
CD OPERATION
• SELECT TRACKS
Press TRK/TUNE button (16) or
TRK/TUNE button (17) to move to
the previous track or the following track.
Track number shows on display.
Hold press TRK/TUNE button (16)
or TRK/TUNE button (17) to fast
reverse or fast forward. Disc play starts
from when you release the button.
• PAUSE PLAYING
Press /MUTE button (3) to pause
CD player. Press it again to resume
play.
• REPEAT THE SAME TRACK
Press RPT button (22) for several
seconds to continuously repeat the
same track. Press it for several seconds
again to stop repeat.
• PREVIEW ALL TRACKS
Press INT button (24) for several
seconds to play first several seconds
of each track on current disc. Press it
for several seconds again to stop intro
scan and listen to track.
• PLAY ALL TRACKS IN RANDOM
Press RDM button (23) for several
seconds to play all tracks on the current
disc in random. Press it for several
seconds again to cannel the function.
• PROGRAM CD TRACKS
Use Program function to select up to
32 tracks to play in any order. Program
works by allowing you to select a track
number for each spot in the playing
sequence. A CD must be inserted and
in CD playing mode to use Program.
- How to program CD tracks
1. Press MEM button (20) for several
seconds to enter Program mode,
then “PGM” stars flashing and “P-
01” icon appear on the display.
2. Press TUNE button (16) or
TUNE button (17) to choose
track number. For example, select
track 6, then press MEM button
(20) shortly to memorize it and “P-
02” will appear on the display. So
track 6 will be played first. Thus,
you can also press TRK/TUNE
/ buttons (17) and (16) to choose
track number 10 and press MEM
button shortly, then “P-03” will
appear. So track 10 will be
secondly played. Repeat these
operations, and you can program
CD tracks to your need. If you
completed program setting, press
PGM button (21) for several
seconds to play CD in
programmed order.
Note: Using Program function can
only select up to 32 tracks to play in
any order. When you have selected
32 tracks to be programmed. “FULL”
will appear on the display.
- When the CD is played in programmed
order by pressing PGM button (21)
for several seconds, pressing it again
for several seconds will exit PGM
mode.
- When the disc is playing in
programmed order, pressing MEM
button (20) for several seconds will
cancel the all programmed content
and “CLR” appears on the display.
- If you don’t press MEM button (20)
to carry out program setting, then
press PGM button (21) for several
seconds, “NO-P” will appear.
• TRACK/TIME DISPLAY
Press AS/PS (ELAPSE) button (2) to
show running time/remain time of track.
• EJECT
When you pull out the plastic panel
and display the disc slot (5), the disc
in the slot will eject automatically.
If insert a disc into the slot to play with
the plastic panel open, press EJECT
button (4) to eject the disc.
When the plastic panel is open, long
press EJECT button (4), the unit will
eject for some seconds automatically
to detect if there are some small scrip
or other objects in the disc slot and
eject them out.
8
OPERATION

CD CHANGER OPERATION
• SELECT TRACKS
Press TRK/TUNE button (16) or
TRK/TUNE button (17) to move to
the previous track or the following track.
Track number shows on display.
Hold press TRK/TUNE button (16)
or TRK/TUNE button (17) to fast
reverse or fast forward. Disc play starts
from when you release the button.
• PAUSE PLAYING
Press /MUTE button (3) to pause
CDC player. Press it again to resume
play.
• REPEAT THE SAME TRACK
Press RPT button (22) to continuously
repeat the same track. Press it again
to stop repeat.
• PREVIEW ALL TRACKS
Press INT button (24) for several
seconds to play first several seconds
of each track on current disc. Press it
again for several seconds to stop intro
scan and listen to track.
• PLAY ALL TRACKS IN RANDOM
Press RDM button (23) for several
seconds to play all tracks on the current
disc in random. Press it for several
seconds again to cannel the function.
• TRACK/TIME DISPLAY
Press AS/PS (ELAPSE) button (2) to
show running time of track.
• SELECT DISC
Press SHIFT(SCAN) button (13) to shift
mode and then “SHIFT” will appear on
the display. At shift mode, press
TRK/TUNE button (16) or
TRK/TUNE button (17) to select
previous disc or next disc. If there isn’t
any operation for several seconds, it
will exit shift mode automatically.
Note:
A. Notes on discs:
1. Attempting to use non-standard shape
discs (e.g. square, start, heart) may
damage the unit. Be sure to use round
shape CD discs only for this unit.
2. Do not stick paper or tape, etc, onto
the label side or the recording side of
any discs, as it may cause a
malfunction.
3. Dirt, dust, scratches and warping discs
will cause misoperation.
B. Notes on CD-Rs (recordable CDs)/
CD-RWs (rewritable CDs):
1. Be sure to use discs with following
marks only for the unit to play:
2. The unit cannot play a CD-R and CD-
RW that is not finalized. (Please refer
to the manual of your CD-R/CD-RW
recorder or CD-R/CD-RW software for
more information on finalization
process).
3. Depending on the recording status,
conditions of the disc and the
equipment used for the recording,
some CD-Rs/CD-RWs may not be
played on this unit. (see *1)
* 1: To have more reliable play back,
please see following recommendations:
a: Use CD-RWs with speed 1x to 4x
and write with speed 1x to 2x.
b. Use CD-Rs with speed 1x to 8x and
write with speed 1x to 2x.
c. Do not play a CD-RW which has
been written for more than 5 times.
9
OPERATION
Recordable Rewritable

10
CONTROL & FUNCTIONS KEYS
This unit is a marine rated wired remote control made using a modified controller or
similar layout. It is capable of operation specified functions on the marine AM/FM/CD
receiver and the marine AM/FM receiver. The body, buttons, controls and display need
to be UV and water-resistant. It includes LCD and an illumination circuit.
The flat body should be watertight and the circuit board clear coated.
1 Power button
Press the button (1) shortly to turn on/off the head unit.
Press button (1) for more than 3 seconds, the button is operated to initial volume
control button. When system power turns on, the volume is set to initial volume level.
2 MUTE button
In RADIO/AUX IN mode, press MUTE ( ) button (2) to activate mute function and
“MUTE” will appear on the display. Press the button once again to release mute function
and return the volume to the last position before it was muted.
In CD or CDC mode, press (MUTE) button (2) to pause CD or CDC player. Press
it again to resume play.
3 VOLUME +/- buttons
Press VOL+/- buttons (3) to increase/decrease volume level.
4 MODE SELECTION button
Press the MODE button (4) to step sequentially through the following sources: e.g.
radio mode to CD mode to CDC mode to AUX IN mode.
5 BAND SELECTION buttons
Press the BAND button (5) to step sequentially through the following bands: FM1,
FM2, FM3, AM1.
6
8
3
5
7
1
4
2

11
INSTALLATION
6 TRACK/SEARCH/TUNE buttons
•STATION SELECTION (FOR RADIO OPERATION)
Press / buttons (6) shortly to activate automatic seek function. Press for more
than 3 seconds until “MAN” appears on the display, the manual tuning mode is
selected. If both buttons have not been pressed for several seconds, they will return
to seek tuning mode and “AUTO” appears on the display.
•SELECT TRACKS (FOR CD OR CDC OPERATION)
Press the / buttons (6) shortly to move to the following track or the previous
track.
Press the / buttons (6) for more than 3 seconds to activate fast forward or rewind
of the disc. Disc play starts from when you release the button.
7 SHIFT/SCAN/MP3 button
• SCAN (FOR RADIO OPERATION)
Press SHIFT/SCAN button (7) to scan through strong stations in the current band.
Radio pauses for five seconds at each strong station. At each time the frequency
is flashing on the display. Press SHIFT/SCAN button (7) again to listen to current
station.
• SELECT DISC (FOR CDC OPERATION)
During CDC operation, press SHIFT/SCAN button (7) to shift mode. And then “SHIFT”
will appear on the display. At shift mode, press / buttons (6) to select next disc
or previous disc. If there isn’t any operation for several seconds, it will exit shift mode
automatically.
8 Liquid Crystal Display
Exhibit the number the current disc and the current track, and other activated
functions on the display (8).

12
INSTALLATION
Select the proper position to install the remote controller and then cut a hole with the
diameter about 88mm. Then use mounting bracket and two screws to install the
controller to the board. Be sure to place the rubber washer and rubber ring between
the controller and the board.( Please refer to the following picture.)
SCREW
RING
RUBBER RING
MOUNTING POCKET
MOUNTING BRACKET

13
GENERAL
Power Supply Requirements : DC 12 Volts, Negative Ground
Chassis Dimensions : 178 (W) x 162 (D) x 50 (H) mm
Tone Controls
- Bass (at 100 Hz) : 10 dB
- Treble (at 10 KHz) : 10 dB
Maximum Output Power : 4 x 80 Watts
Current Drain : 15 Ampere (max.)
CD PLAYER
Signal to Noise Ratio : More than 55 dB
Channel Separation : More than 45 dB
Frequency Response : 40 Hz - 18 KHz
RADIO
FM
Frequency Coverage : 87.5 to 107.9 MHz
IF : 10.7 MHz
Sensitivity (S/N = 30 dB) : 3 V
Stereo Separation : > 30 dB
AM
Frequency Coverage : 530 to 1720 KHz
IF : 450 KHz
Sensitivity (S/N = 20 dB) : 32 dBu
SPECIFICATION

14
TROUBLE SHOOTING
Before going through the check list, check wiring connection. If any of the problems
persist after check list has been made, consult your nearest service dealer.
Symptom Cause Solution
No power. The ignition switch is not If the power supply is
on. connected to the accessory
circuits, but the engine is not
moving, switch the ignition key
to “ACC”.
The fuse is blown. Replace the fuse.
Disc cannot be Presence of CD disc inside Remove the disc in the player,
loaded or ejected. the player. then put a new one.
Inserting the disc in reverse Insert the compact disc with
direction. the label facing upward.
Compact disc is extremely Clean the disc or try to play a
dirty or defective disc. new one.
Temperature inside the ship Cool off or until the ambient
is too high. temperature return to normal.
Condensation. Leave the player off for an hour
or so, then try again.
No sound. Volume is in minimum.
Adjust volume to a desired level.
Wiring is not properly Check wiring connection.
connected.
Sound skips. The installation angle is Adjust the installation angle less
more than 30 degrees. than 30 degrees.
The disc is extremely dirty Clean the compact disc, then
or defective disc. try to play a new one.
The operation keys The built-in microcomputer Press the RESET button.
do not work. is not operating properly Front panel is not properly fixed
due to noise. into its place.
The radio does not The antenna cable is not Insert the antenna cable firmly.
work. The radio connected.
station automatic
selection does not The signals are too weak. Select a station manually.
work.
88-C1861-05