Boss Audio Systems BV7948B User manual

7. Specification
General Specification
Power Supply Requirement..................................................DC 12V
Maximum Power Output...................4 x 80W(measured at DC 14.4 V)
Dimensions(w x h x d)............................................7”W x 2”H x 6.5”D
DVD Deck Specification
Format..............................DVD/VCD/MPEG 4/JPEG//MP3/WMA/CD
Video System........................................................................NTSC
Audio System..............................................................24 bit/96KHz
Loading System.......................................................... Auto Loading
Mounting Angle.................................................................0 to +/-30
Video Specification
Video Type...................................................................16:9 and 4:3
Video Output level......................................Composite:1.0± 0.2Vp-p
Load impedance: 75 ohms
Horizontal Resolution................................................................500
Audio Specification
+0
Audio Output(Analog audio)..........................................2.0 -1.0Vrms
Frequency Response.............................20Hz ~ 20KHz(at 1KHz 0 dB)
S/N Ratio(Audio).............................................≥90dB(at 1KHz 0 dB)
Separation..............................................................................50dB
Radio Specification
FM Section
Frequency range.......................................87.5MHz - 107.9MHz(US)
87.5MHz - 108.0MHz(EU)
Usable sensitivity......................................................................3uV
I.F Frequency....................................................................10.7MHz
AM Section
Frequency....................................................530KHz - 1710KHz(US)
522KHz - 1620KHz(EU)
!
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
!
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE
COVER (OR BACK). NO USER SERVICEABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SERVICE PERSONNEL.
The lightening flash with arrowhead symbol, within an equilateral triangle, is
intended the alert the user to the presence of uninsulated dangerous voltage
within the products enclosure that may be of sufficient magnitude to constitute
a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert user to
the presence of important operating and maintenance (servicing) instructions
in the literature accompanying the appliance.
CLASS 1 LASER PRODUCT
Laser product symbol: located on the rear panel of the unit, indicate this player is a class
laser product, only use weak laser and no hazardous radiation outside of the unit.
1.Read through this instruction manual before installation and use.
2.Do not open the cover or touch any of the components exposed out of the unit, only for
qualified technicians.
3.Do not expose the unit under direct sunlight or nearby objects that radiate heat to avoid
damage the unit.
4.Do not place the unit in moist and humid conditions, which effect the pick-up of the unit
lead to out of work.
5.Place the unit on a flat surface and ventilative condition. Please ensure the ventilation
holes are not covered to avoid overheating and malfunction.
6.Clear the panel and case with soft dry cloth only, do not apply any kind of thinner,
alcohol or sprays.
WARNING: TO REDUCE THE
RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE
THIS APPLIANCE TO RAIN OR
MOISTURE.
PRECAUTION

1. Before Operation
1.1 Glossary
PBC (playback control)
It is a kind of signal(menu) recorded in the disc with SVCD or VCD2.0
format used for the playback control. For the discs contained PBC, It can
playback interactive software with the menu displayed on TV.
Title
Generally, the title is the important part of DVD disc. for example, the
theme part of movie is title 1, the part described how to make movie is title
2, the cast is title 3, etc. Every title contain a serial number that is easy to
lookup.
Chapter
A title can be divided into several blocks, so that every block can be operated
as a unit, the unit is called chapter. The chapter contain a unit at least.
Track
It is the biggest component of VCD. Generally, every song of karaoke disc
is a track.
1.2 Precautions
Safety
1. The unit is designed for negative terminal of the battery which is
connected to the vehicle metal. Please confirm it before installation.
2. Do not allow the speaker wires to be shorted together when the unit is
switched on. Otherwise it may overload or burn out the power amplifier.
3. Do not install the detachable panel before connecting the wire.
4. The protective case is to safely keep the front panel(see the photo).
Environment
1. Do not use this unit when water and moisture is near it.
2. If moisture forms inside the Lens, it may not operate properly. To correct
this problem, wait about one hour for the moisture to evaporate.
3. If the car interior is extremely hot, do not use the player until the car has
been driven for a while to cool off the interior.
FRONT PANEL
PROTECTIVE CASE
6. The Trouble Shooting
Please read the user s manual carefully before using the DVD player. If you have any troubles
in using this player, try to solve the problems by the suggestions mentioned below. If you can
not remove the trouble after using all the suggestions, please contact the company or the
technical service center authorized by us. For the sake of your safety, please do not open the
cover and repair the player by yourself, if that, it may cause electric shock.
NO PICTURE, SOUND AND INDICATION
* Ensure that the power switch is on.
* Ensure that the fuse is not blown.
NO SOUND BUT HAVE PICTURE
* Ensure that the player s audio output has a good connection with TV s audio input.
* Check whether the audio connector is damaged.
* Check whether you have turned down the volume.
* Ensure that you have set the right AUDIO setup of the player.
* Ensure that the audio is not under mute.
NO PICTURE BUT HAVE SOUND
* Ensure that the player s video output has a good connection with TV s video input.
* Ensure that you have turned your TV to the AV input channel connecting to your player.
* Ensure that you have set the right VIDEO settings of the player.
BLACK AND WHITE PICTURE OR SCREEN ROLLING
* Ensure that you have set the right TV SYSTEM (e.g. PAL, NTSC) setting.
FLAWS OF PICTURE OR SOUND
* Check whether the setting of AUDIO is right.
* Check whether the disc is scratched or stained.
* Check whether there is condensation inside the Lens. If so, leave the player off for an hour
or so, then try again.
* Check whether the installation angle is less than 30.
DISPLAY NO DISC OR BAD DISC
* Ensure that you have put the disc on the tray.
* Check whether the disc is put in the reverse side.
* Check whether the disc is distorted.
* Check whether the disc is stained or scratched badly.
* Ensure that the disc format is compatible to the player.
* Ensure that the temperature inside the car is not too high. If so, cool off until the ambient
temperature returns to normal.
* Replace another disc to insert it into the disc compartment.
REMOTE CONTROL IS INSENSITIVE OR DOES NOT WORK
* Check the batteries of remote control and make sure that they are to be powerful and
good conductivity.
* Direct the remote control to the IR sensor of the player.
* Check whether there are some obstacles between the remote control and IR sensor.
SOME FUNCTION BUTTONS DO NOT WORK
* Turn off the power, then turn on again.
* Reset the unit to zero, then turn on again.
* Remove the front panel from the unit, then install it again and then turn on again.
THE RADIO DOES NOT WORK
* Check whether the antenna cable is connected firmly. Or manually tune for a station.

1.3 Maintenance and Cleaning of Discs
Disc Maintenance
1. To keep the disc clean, handle the disc by its edge, do not touch the disc
surface of the play side.
2. Do not stick paper or tape on the disc. If there is glue (or analog) on the
disc surface, must wipe it up before using.
3. Do not expose the disc to direct sunlight, or nearby heat sources such as
caliduct, or leave it in a car parked in direct sunlight where there can be a
considerable rise in temperature.
4. Put the disc inside disc case to keep temperature after finishing playback.
Disc Cleaning
1. Before playing, wipe the disc with a clean lint. wipe the disc outwards from
the disc center.
2. Do not use petrel, thinner, commercially cleaner or anti-static spray used to
plastic LP to wipe disc.
1.4 Battery Information of the Remote Control
Replace Battery in the Remote Control:
1.Before using the remote control for the first time, pull the insulating
sheet out of the remote control as the direction indicated by the
arrow.(see fig.1)
2.Press the movable block hold as the direction indicated by the A arrow
(See fig.2), then pull the battery holder out of the remote control as
the direction indicated by the B arrow(see fig.2).
3.Replace the old battery by a new battery with (+) polarity side upward.
(See fig.3).
4.Insert the battery holder to the original position in remote control.
(See fig.3).
Note about the Battery of the Remote Control:
1.Improper use of battery may cause overheating or explosion. so that
Result in injury or fire .
2.Battery leakage may cause damage to the remote control(Battery
Life: 6 months with normal use in normal room temperature).
3.Do not short the battery.
4.Do not throw the battery into the fire.
5.To avoid the risk of accident, keep the battery out of reach of children.
Fig.1 Fig.2 Fig.3
5.2 Dial with remote control with the following procedures:
(1) Input telephone number with number buttons 0-9
* Press CLEAR button briefly to cancel the wrongly input number if necessary
(2) Press TEL briefly to execute the dialling.
5.3 To redial the last phone number dialled
Press REDIAL button briefly or tap the icon to validate the last phone number.
6. Accept/Reject/End Call
6.1 When ringing, press TEL button briefly to accept the call;
6.2 When ringing, press HANGUP button briefly to reject the call;
6.3 When talking, press HANGUP button briefly to end the call.
Note: During ringing, the phone number appears.
7. To transfer the audio of a file played by Mobile Phone to the Car Audio Player
In the connection status between the Bluetooth devices of the Car Audio Player
and a Mobile Phone, if the mobile phone can play audio or video files and support
A2DP, when the Mobile Phone plays an audio or video file(For some Mobile Phones,
you must select Play by BT firstly), the audio of the playing file will be transferred
to the Car Audio Player.
In A2DP mode, if the Bluetooth device of the Mobile Phone support AVRCP, the
functions of the >>|, |<< , PLAY/PAUSE , EJECT, MUTE, EQ, LOUD, VOL and SEL
buttons are the same as one in disc mode(no fast forward/backward functions for
the >>|/|<< buttons). The other buttons available in disc mode are not available.

1.5 The Remote Control Description
16. SEARCH BUTTON
17. RDM BUTTON
18. RPT BUTTON
19. SUBTITLE/REDIAL BUTTON
20. TITLE BUTTON
21. ANGLE/ST/# BUTTON
22. ZOOM BUTTON
23. AUDIO BUTTON
24. CLK BUTTON
25. A-B BUTTON
26. INT BUTTON
27. EQ BUTTON
28. LOC/SLOW-FWD/* BUTTON
29. MUTE BUTTON
30. STOP BUTTON
31. VOLUME- BUTTON
32. < BUTTON
33. OK BUTTON
34. VOLUME+ BUTTON
35. BAND/SHIFT BUTTON
36. PROG BUTTON
37. OSD BUTTON
38. LOUD BUTTON
39. STEP/TEL BUTTON
40. TA BUTTON
41. AF BUTTON
1. BACK BUTTON
2. MENU/PBC BUTTON
3. POWER BUTTON
4. ^ BUTTON
5. >>| BUTTON
6. > BUTTON
7. |<</CLEAR BUTTON
8. v BUTTON
9. SEL BUTTON
10. PLAY/PAUSE BUTTON
11. NUMBER(0~10,+10
-10) BUTTONS
12. 10+/PTY BUTTON
13. SETUP BUTTON
14. MODE BUTTON
15. APS/HAND UO BUTTON
5. BLUE TOOTH HANDFREE SYSTEM
. Pairing and connection
1) Turn on the Bluetooth mode of the mobile phone;
2) Select the item of Finding the Bluetooth Device
and enter it. After finishing the finding, it will show
the name of the Bluetooth Device if finding a
Bluetooth Device.
Select it and enter it, then it will show a interface
that ask you to input a password, input the
password 0000 and then enter it. Then it will tell you pair OK.
3) For some mobile phones, they can automatically connect with the BT device of the
car audio system after pairing is ok; for some mobile phones, they need to select
the paired BT device and press the CONNECTION button. When connection is ok,
the LCD of the car audio system will show LINK OK.
* when pairing is failed, please select BT search again by your phone.
3. Use the mobile phone to do connection or disconnection
In the connection status, find the paired and connected Bluetooth Device, then
press the disconnection button to do disconnection;
In the disconnection status, find the paired and disconnected Bluetooth Device,
then press the connection button to do connection.
4. In the connection status: the audio of mobile phone transfers to the car audio
system whenever a dialling takes place or receiving a call.
5. Dialling when in connection status
5.1 Dial with the mobile phone directly.
1. Enter Bluetooth mode
When you use MODE button or Mode Menu to enter
Bluetooth mode, it will display Bluetooth interface as
right.
Press and hold the BAND button to turn on shift
then to do select.
2
NOTE interface
Bluetooth interface
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