Boss Audio Systems 628UA User manual

ii
CONTENTS
Precautions................................................................................................................................................. 1
Use Caution
..............................................................................................................................
1
Lithium Battery Cell Warningss ...........................................................................................................................................1
Installation .................................................................................................................................................. 2
Installation Procedures.......................................................................................................................... 2
Installation Opening................................................................................................................................2
Uninstall the Main Unit
...........................................................................................................................3
Wiring Connections................................................................................................................................ 3
Control Panel Button Locations .................................................................................................................. 4
Operation................................................................................................................................................... 4
Power / SRC...........................................................................................................................................
5
5
5
Adjust Volume (VOL)
.........................................................................................................
....................................................................................................................
.................................................................................................................
5
5
5
5
Adjust Menu Options (SRC)
.............................................................................................................................. 5
Set the Clock (CLK)
.......................................................................................................................................5
Change the Source (SRC)
.............................................................................................................................
............................................................................................................................................
...............................................................................................................................
........................................................................................................................
5
Reset System (RESET)
.................................................................................................5
......................................................................................................................5
Switch Between US and EU Frequency
...................................................................................................................5
Change Bands (BAND).......................................................................................................................... 5
Manual Tuning (|<< / >>|)
.............................................................................................................5
5
5
Auto Seek Tuning (|<< / >>|)
...................................................................................................................................................... 6
Automatic Music Search (AMS)
Mute .............................................................................................................................................
..........................................................................................................................................
.......................................................................................................................
6
Store/Recall Preset Stations (1 - 6)
.......................................................................................................................................... 6
.......................................................................................................................................6
6
Insert SD Card
Insert USB
AUX In Jack
Release Panel .........................................................................................................................
Play/Pause
Next/Previous Track
Fast Forward/Backward
Track Search
Track/Folder Navigation
Remote Control
........................................................................................................................................
7
Remove Insulating Sheet
.....................................................................................................................
7
Button Names and Locations................................................................................................................ 7
Troubleshooting........................................................................................................................................ 8
........................................................................................................................................... 9

PRECAUTIONS
Lithium Battery Cell Warnings
• Cell leakage may cause damage to the remote control.
• Do not throw cells into as this may cause an explosion.
• Keep battery cells out of reach of children.
Use cautions
•
•
•
•
•
•
•
• Be sure to lower the volume before switching off the unit or the ignition key.
Some MP3/WMA files may not be playable.
1

INSTALLATION
Installation Procedures
Installation Opening
First complete the electrical connections and then check for correctness.
This unit can be installed in any dashboard
Having an opening as shown above .
Insert mounting collar into the dashboard and bend
the mounting tabs out with a screwdriver.
Make sure that lock lever is flush with the mounting
collar( not projecting outward).
Secure the rear of the unit.
After fixing mounting bolt and power connector, fix the rear of the
unit to the car body by bubber cushion.
2.05 inch
7.20 inch MOUNTING SLEEVE
2

INSTALLATION(CONT.)
3
- Only use speakers with 4 ohms impedance.
- Do not attach the control panel to the chassis before wiring is complete.
- The maximum current of the auto antenna is 200mA.
Wiring Connections
WIRING
DIAGRAM
CAUTION
+12V DC
NEGATIVE
GROUND
!
Rear Right Speaker Purple +
Purple/Black -
Gray +
Gray/Black -
Front Right Speaker
White +
White/Black -
Front Left Speaker Rear Left Speaker
Green +
Green/Black -
Power B+ (Yellow)
GND (Black)
Fuse
15A
REM (Blue)
ACC (Red)
Fuse
0.5A
Uninstall the Main Unit
1. Remove the metal strap from the main unit.
2. Remove the plastic trim out from the main unit.
3. Insert a bracket key into the left and right side of the main unit and draw the unit out of
the mounting sleeve.

CONTROL PANEL BUTTON LOCATIONS
4
OPERATION
REMOVE PANEL
18
18
RADIO,USB&CARD , AUX IN,modes (if there are USB and SD card inside the unit).
1.POWER/SRC to turn off the unit.
inserts a USB flash drive or SD Card, their respective logos will illuminate on the display.
radio and Aux. When the user
1
2 INT
3
RPT
4
RDM
5 -10
6
+10
BND CLK
AMS
MUTE
/SRC
RESET
AUX
628UA
USB

OPERATION
5
8. CLK
9. SD CARD SLOT
11.FF( ) &12.FB( )
In the radio mode, long press the FF( ) or FB( ) button for more than 2 seconds, the unit will
search the next or previous frequency step by step.
Short press the FF( ) or FB( ) button, the automatic search will start, it will search upward or
downward for the strong signal radio station within the cuttent band. The auto searching will stop
until find a station.
13.BND/AMS
T
In the USB or SD card mode, press the volume knob to enter the EQ function that the audio
At the radio status,press and hold the VOL button to enter switch state of the US(USA) and EU
(EUROPE) frequency,then rotate the VOL knob to select US frequency or EU frequency,after
selecting US or EU frequency,the system will switch to the selected frequency 3 seconds later.
In the radio mode, rotate the volume knob to increase or decrese the volume level of the sound
In radio mode,short press the BND/AMS button repeatedly to select the one of the radio band : FM 1,
FM 2,FM 3,AM1,AM2 in a cycle sequence. When you select a band, the word F1、F2、F3 for FM band,
and A1、A2 for AM band will be shown on the LCD display.
preset station in each band. AMS button to scan each
Press the BND/AMS check
During USB or SD playback, short press the BND/AMS button to enter track search mode, then rotate
the VOL knob to track forward or backward; if no any operation in 5 seconds,it will play the current track.
When the 6 strongest stations will be stored into
Loud Loc/DX Stereo Vol
Press the button to flip down the front panel. Remove the front panel to gain access to the SD
card slot. Insert an SD card, then attach and close the front panel. Switch to SD mode when you
wish to begin SD card playback.
Press the CLK button once to display the real time, With time appearing on the display.Press and hold
CLK button for more than 2 seconds until the time flashes. You can adjust the HOUR and MINUTE by
pressing the button and button respectively and press the CLK button to switch the HOUR and
MINUTE.

OPERATION
6
17. o
14. MUTE
15. USB PORT
16. AUX IN JACK
18. RESET
To reset all parameters to factory default values. Press the button to flip down the control panel form
the head unit and remove the control panel,then use a subject with a sharp point end to thrush the RESET
hole.
flash on the LCD

7
REMOTE CONTROL
Button Names and Locations
1. Power button
2. MUTE button
3. CLK (clock) button
4. LOUD (loudness) button
5. AMS (automatic music search) button
6. PREV (previous) button
7. EQ (equalizer) button
8. SRC (source) button
9. RPT (repeat) or 3 button
10. INT (intro) or 2 button
11. LOC (local) button
12. VOL (volume) button
13. SEL (select) button
14. BAND button
15. ST (stereo) button
16. >|| or 1 button
17. NEXT button
18. RDM (random) or 4 button
19. - 10 or 5 button
20. + 10 or 6 button

TROUBLESHOOTING
8
Connect the battery cable to the terminal that is always live.
.
A lot of static in
broadcast

9
SPECIFICATIONS
General
Power supply Requirement : DC 12V
Maximum power output : 50W X 4CH
Speaker impedance : 4 - 8 Ohm
Unit Dimensions(WxHxD) : 7.0 X 2.0 X 3.8 inch
Weight : 1.54 Lb (0.7 kg)
Fuse : 15 A
FM
Frequency Range USA / EUROPE: 87.5 MHz - 107.9 MHz / 87.5 MHz - 108.0MHz
Channel step: 200 KHz / 50 KHz
AM
Frequency Range USA / EUROPE: 530 KHz - 1710 KHz / 522-1620 KHz
Channel step: 10 KHz / 9 KHz
USB/Card
RADIO
Usable Audio Formats ......................................................................................... MP3/WMA
Pre-amp Output
.................................................................................................. Front and Rear
Frequency Response
......................................................................................... 20 Hz - 20 KHz
S/N Ratio
............................................................................................................................ 60dB