Boss marine MR1520W User manual

2
Installation .....................................................................................................3
DIN Front-Mount....................................................................................................3
Installing the unit.............................................................................................3
Removing the unit...........................................................................................4
Using the Detachable Front Panel .............................................................5
Wiring Connection ........................................................................................6
Operation.......................................................................................................7
General Operation ................................................................................................7
Radio Operation ...................................................................................................9
CD Operation ......................................................................................................10
CD Changer Operation .......................................................................................11
MP3 Operation ....................................................................................................11
Marine remoto ....................................................................................................14
Specification................................................................................................17
Trouble Shooting.........................................................................................18
CONTENTS

3
Notes:
• The unit can be installed on the vehicle
or the ships.
• Choose the mounting location where
the unit will not interfere with the normal
driving function of the driver.
• Before finally installing the unit, connect
the wiring temporarily and make sure
it is all connected up properly and the
unit and the system work properly.
• Use only the parts included with the
unit to ensure proper installation. The
use of unauthorized parts can cause
malfunctions.
• Consult with your nearest dealer if
installation requires the drilling of holes
or other modifications of the vehicle or
the ship.
• Install the unit where it does not get in
the driver’s way and cannot injure the
passenger if there is a sudden stop,
like an emergency stop.
• If installation angel exceeds 30¢Xfrom
horizontal, the unit might not give its
optimum performance.
30˚
• Avoid installing the unit where it would
be subject to high temperature, such
as from direct sunlight, or from hot air,
from the heater, or where it would be
subject to dust, dirt or excessive
vibration.
TAKE OUT SCREWS BEFORE
INSTALL
Before install the unit, please remove the
two screws.
NOTE: If this unit is installed on the ship,
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.
DIN FRONT-MOUNT
Installing the unit
1. Dashboard
2. Holder
After inserting the holder into the
dashboard, select the appropriate tab
according to the thickness of the
dashboard material and bend them
inwards to secure the holder in place.
3. Screw
INSTALLATION
(Fig. 1)
1
3
2
182
53
Take out screw before installation

1. Dashboard
2. Nut (5mm)
3. Spring washer
4. Screw (5x25mm)
5. Screw
6. Strap
Be sure to use the strap to secure the
back of the unit in place. The strap can
be bent by hand to the desired angle.
7. Plain washer
Removing the unit
1. Before removing the unit, press the
OPEN button to slide down the front
panel.
2. Key
Insert the keys supplied with the unit
into the grooves in the housing as
shown in figure until they click. Pulling
the keys makes it possible to remove
the unit from the dashboard.
4
INSTALLATION
(Fig. 2)
1
2
6
5
4
3
7
2
OPEN button
Front Panel
1

To Detach the Front Panel
1. Press the OPEN button, the front panel
will slide down.
2. When the front panel slides down,
press the bottom button of the front
panel upward and pull it out from the
panel bracket.
3. For safekeeping, store the front panel
in the supplied protective case
immediately after being removed.
To Reinstall the Front Panel
1. When the panel bracket is in slide down
position, insert the front panel into the
panel bracket and push the front panel
from the middle to slide it up.
2. When the panel bracket is in slide up
position, insert a side of the front panel
to its proper position and push another
side into the panel bracket, a ‘click’
sound should be heard.
3. Note that if the front panel fails to lock
in position properly, pressing control
button may not function and LCD
display may be missing some
segments. Press the OPEN button and
then re-install the front panel again.
5
Bottom
Button
Bottom
Button
Protective Case
Front Panel
Front Panel
USING THE DETACHABLE FRONT PANEL
Open

6
WIRING CONNECTION
GREEN
GREEN/BLACK
GREY
GREY/BLACK
VIOLET
VIOLET/BLACK
MAIN UNIT
WHITE
WHITE/BLACK
FRONT Lch
SPEAKER
REAR Lch
SPEAKER
FRONT Rch
SPEAKER
REAR Rch
SPEAKER
Rch RED
Lch WHITE
(GREY)
REAR RCA CABLE
Rch RED
Lch WHITE
(BROWN)
FRONT RCA CABLE
ANTENNA SOCKET
RED
YELLOW
BLACK
BLUE
POWER
ANTENNA
GROUND (B–)
Constant
12 Volts
IGNITION
SWITCH (B+)
CD CHANGER
CONNECTOR
SOCKET
Rch RED
Lch WHITE
(YELLOW)
AUX IN
(BLACK)
WIRING REMOTE
CONNECTOR
SOCKET
(BLACK)
FUSE

7
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.
• FACEPLATE RELEASE
Press OPEN button (7) to slide down
the removable faceplate.
• SOUND ADJUSTMENT
Press SEL/MENU (10) shortly to
change audio mode through volume,
bass, treble, balance, and fader modes.
Press the VOL button (11) or VOL
button (12) to adjust the selected mode.
When the currently displayed function
has not been adjusted for several
seconds, the mode shall return to
volume position and display will return
to normal radio, CD or CDC display.
• MENU SELECTION FUNCTION
Hold press SEL/MENU (10) for several
seconds to enter menu select function,
then step short press SEL/MENU (10)
to select different set mode and
separately to press VOL button (11)
or VOL button (12) to select your
requisite as following order.
OPERATION
5 24
Volume Bass Treble Balance Fader
1419
8
1312
119 18
22 2320 216
16 1710
2 7
31 4
15

8
For detailed operations, please see
below:
BEEP ON/OFF
When beep on, the beep in generated
when every button is pressed.
When beep off, the beep is disabled when
press any button.
Program power on volume level
In this mode, you can set the desired
volume level when the unit turns on.
USA/EUR
In this mode, you can select USA or
European radio frequency spacing.
• 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.
CLOCK ON/OFF while power off
In this mode, you can select if the clock
is to be displayed while power off.
FREQ/CLOCK/NO PRI priority
When select Frequency Priority:
The frequency will appear on the unit all
the while. Pressing DISP button (1) while
in Frequency Priority will temporarily
display clock and then returns to
frequency display.
When select Clock Priority:
The clock will appear on the unit all the
while. Pressing DISP button (1) while in
Clock Priority will temporarily display
selected station frequency (in RADIO
mode) or track number (in CD/CDC mode)
and then returns to clock display.
When select No Priority:
When the frequency appears on the unit,
pressing DISP button (1) will display clock
and it will not return to frequency display
until DISP button (1) pressed again. When
the clock appears on the unit, pressing
DISP button (1) will display frequency
information.
12hours/24hours
In this mode, you can set 24 hours mode
or 12 hours mode.
• When the currently displayed function
has not been adjusted for several
seconds, it will exit menu set mode.
• When you have set CLOCK ON during
power off state, LCD backlight will be
turn on together.
• 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 DISP button (1) for more than 2
seconds until the clock is shown on
the display and flashes. Then press the
button (17) to change minutes or
button (16) to change hours.
• LIQUID CRYSTAL DISPLAY
Exhibit current frequency and activated
functions on the display (8).
• ESP FUNCTION
If the unit has the electronic shockproof
function, it can be shockproof about
several tens of seconds.
OPERATION
FREQ/CLOCK/NO PRI priority 12hours/24hours
BEEP ON/OFF Program power on volume level
CLOCK ON/OFF while power off USA/EUR

• RESET
Reset button (24) 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.
Note: If press reset button (24), the
unit can’t work yet, please use a cotton
swab soaked in isopropyl alcohol to
clean the socket on the front panel.
•RESET TO FACTORY SETTING
In radio (AM/FM) mode, press MODE
button (6) for more than three seconds,
the display will appear “EEP INIT”, and
all settings recover factory value.
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:
FM1 FM2 FM3 AM1
AM2
• SELECTING STATION
Press button (16) or button (17)
shortly to activate automatic seek
function. Press for more than 3 seconds
until “MAN” appeared 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”
appeared 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 all station preset
saved in memory.
• STATION STORING
The preset buttons (14) can be used
to store 6 stations in each band (FM
1, FM 2, FM 3 and AM1, AM2) for
convenient access to your favorite
stations.
• Programming stations
1. Select the desired band, then tune
in the station you want to store in
memory.
2. Press and hold one of the preset
buttons (14) for more than 2 seconds
until the corresponding preset button
number appears. Repeat steps 1.
and 2. to program additional stations.
• Quick tuning
Select the desired band, then press
one of the six preset buttons (14).
• 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.
CD OPERATION
• SELECT TRACKS
Press button (16) or button (17) to
move to the previous track or the
following track. Track number shows
on display.
Hold press button (16) or button
(17) to fast reverse or fast forward. Disc
play starts from when you release the
button.
9
OPERATION

• PAUSE PLAYING
Press /MUTE button (3) to pause
CD player. Press it again to resume
play.
• REPEAT THE SAME TRACK
Press RPT button (21) to continuously
repeat the same track. Press it again
to stop repeat.
• PREVIEW ALL TRACKS
Press SCH button (23) to play first
several seconds of each track on
current disc. Press it again to stop intro
scan and listen to track.
• PLAY ALL TRACKS IN RANDOM
Press SHF button (22) to play all tracks
on the current disc in random. Press it
again to cacel 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 (19) to enter
Program mode, then “PGM” stars
flashing and “P-01” icon appear on
the display.
2. Press button (16) or button (17)
to choose track number.
For example, select track 6, then
press MEM button (19) shortly to
memorize it and “P-02” will appear
on the display. So track 6 will be
played first. Thus, you can also press
/ buttons (17) and (16) to choose
track number 10 and press MEM
button (19) 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 (20) 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 (20), pressing it again
will exit PGM mode.
- When the disc is playing in
programmed order, pressing MEM
button (19) will cancel the all
programmed content and “CLEAR”
appears on the display.
- If you don’t press MEM button (19)
to carry out program setting, then
press PGM button (20), “NO-PGM”
will appear.
• TRACK/TIME DISPLAY
Press AS/PS (ELAPSE) button (2) to
show running time/remain time of track.
• EJECT
When the front panel is sliding down,
press EJ button (4) to eject the disc.
10
OPERATION

11
CD CHANGER OPERATION
• SELECT TRACKS
Press button (16) or button (17) to
move to the previous track or the
following track. Track number shows
on display.
Hold press button (16) or 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 (21) to continuously
repeat the same track. Press it again
to stop repeat.
• PREVIEW ALL TRACKS
Press SCN button (23) to play first
several seconds of each track on
current disc. Press it again to stop intro
scan and listen to track.
• PLAY ALL TRACKS IN RANDOM
Press SHF button (22) to play all tracks
on the current disc in random. Press it
again to cancel 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
button (16) or button (17) to select
previous disc or next disc. If there isn’t
any operation for several seconds, it
will exit shift mode automatically.
MP3 OPERATION
• SELECT SONGS
SINGLE STEP SELECTION:
Press button (16) or button (17)
to reverse or advance the previous
song in single step.
SELECT BY SCAN/MP3 BUTTON:
“Searching track directly” =>
“Searching Directory or File Name”=>
searching from root by VOL /
buttons (11&12) =>searching from
current directory by VOL / buttons
(11&12).
1. SEARCHING TRACK DIRECTLY
Press the MP3 button (13) one time to
enter into “Searching track directly”
mode. Set desired track by VOL /
buttons (11&12), and then press
BAND/ENTER button (18) shortly.
Note:
The unit searches the track after few
seconds, even if the BAND/ENTER
button (18) is not pressed.
2. SEARCHING DIRECTORY OR FILE
NAME
Press the MP3 button (13) two times.
It enters into “Searching Directory or
File Name” mode.
The unit searches files and directories
by name which is entered by the user
with the VOL / buttons (11&12).
- Use VOL / buttons (11&12) to
select the characters A to Z, blank,
0 to 9, _, -, +.
- Press SEL/MENU button (10) to
confirm entry of each characters.
- Press BAND/ENTER button (18) to
start the title search.
In case the selected title is a directory
name, display will show (‘ ‘), then
- Use VOL / buttons (11&12) to list
all songs under this directory and
select the title.
- Press BAND/ENTER button (18) to
confirm and start the play.
- Repeat the above steps if the newly
selected title is again a directory.
Note: In this mode, you can also press
the corresponding buttons listed on
the Table 1 below to input your
desired character to select the files
or directories.
OPERATION

12
Key Assigned in Searching mode (Table
1)
3. SEARCHING FROM ROOT
DIRECTORY
Press the MP3 button (13) three times,
the unit searches file or directory from
root directory by VOL / buttons
(11&12).
(D-DIR icon turns on if the name is a
directory). Display will list all available
directories and songs.
Select the desired directory/songs by
using VOL / buttons (11&12) and
BAND/ENTER button (18) to confirm.
If the selected title is a song, it starts
to play.
If the selected title is a directory name,
display will show (‘ ‘), then
- Use VOL / buttons (11&12) to list all
songs under this directory and select
the title.
- Press BAND/ENTER button (18) to
confirm and start the play.
- Repeat the above steps if the newly
selected title is again a directory.
4. SEARCHING FROM CURRENT
DIRECTORY
Press the MP3 button (13) four times,
the unit searches file or directory from
current directory by VOL / buttons
(11&12).
(D-DIR icon turns on if the name is
directory). The current directory name
is displayed for a second and the
currently playing file name is displayed.
The user can select the directory or file
in the directory by VOL / buttons
(11&12). The selected file can be played
by pressing BAND/ENTER button (18).
• PAUSE
Press /MUTE button (3) to pause
MP3 player. Press it again to resume
play.
• REPEAT THE SAME SONG
Press RPT button (21) to continuously
repeat the same song. Press it again to
cancel repeat function.
• PLAY SONGS IN RANDOM ORDER
During MP3 operation, press SHF
button (22) to play songs in random
order. Press it again to cancel the
function.
• SCAN
The scan function enables you to listen
to the first few seconds of the song.
Press SCN button (23) to
activate/deactivate scan function.
• DISPLAY INFORMATION
Press DISP button (1) to show the
following information, such as the clock,
the ID3 TAG (if available: song title,
directory name, artist name, other
contents…) and other information.
OPERATION
Normal In MP3 seaching
SCAN MP3 Seaching
Mode Select
BAND ENTER
M1 A, B, C, 1
M2 D, E, F, 2
M3 G, H, I, 3
M4 J, K, L, 4
M5 M, N, O, 5/
Directory DOWN
M6 P, Q, R, 6/
Directory UP
MODE S, T, U, 7
TUNE DOWN V, W, X, 8
TUNE UP Y, Z, SPACE, 9
SELECT Character shift
DSP _, –, +, 0
VOL UP/DOWN CHARACTER
SELECT (A, B~Z,
SPACE, 0~9, -, +)
AS/PS Backspace

13
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.
C. Notes on MP3 files:
1. The disc must be in the ISO9660 level
1 or level 2 format, or Joliet or Romeo
in the expansion format.
2. When naming a MP3 file, be sure the
file name extension is “.MP3”.
3. For a non-MP3 file, even though the file
name extension is “.MP3”, the unit
cannot recognize it.
Recordable Rewritable
OPERATION

14
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/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 (or cassette 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, AM2.
In MP3 mode, press ENTER (BAND) to confirm the selected track.
6
8
3
5
7
1
4
2

15
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.
• 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.
• In MP3 mode:
1). SEARCHING TRACK DIRECTLY
Press the MP3(SCAN/SHIFT) button (7) one time to enter into “Searching track
directly” mode. Set desired track by VOL+/- buttons (3), and then press
ENTER(BAND) button (5) shortly.
Note:
The unit searches the track after few seconds, even if the ENTER(BAND) button (5)
is not pressed.
2). SEARCHING DIRECTORY OR FILE NAME
• Press the MP3(SCAN/SHIFT) button (7) two times. It enters into “Searching Directory
or File Name” mode. The unit searches files and directories by name which is entered
by the user with the VOL+/- buttons (3).
8 Liquid Crystal Display
Exhibit the number the current disc and the current track, and other activated
functions on the display (8).

16
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

17
GENERAL
Power Supply Requirements : DC 12 Volts, Negative Ground
Chassis Dimensions : 178 (W) x 178 (D) x 50 (H) mm
Tone Controls
- Bass (at 100 Hz) : 10 dB
- Treble (at 10 KHz) : 10 dB
Maximum Output Power : 4 x 50 Watts
Current Drain : 15 Ampere (max.)
CD PLAYER
Signal to Noise Ratio : More than 60 dB
Channel Separation : More than 50 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

18 88-C1801-06
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 car ignition switch is If the power supply is properly
not on. connected to the car 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 car 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.