Boss Audio 638BA User Manual
1
638BA
MP3-Compatible AM/FM CD Receiver
U S E R ’ S M A N U A L
CONTENTS
Installation
DIN front-mount installation
DIN rear-mount installation
Removing the head unit
Detaching the front panel
Replacing the front panel
General controls
Radio controls
Audio controls
CD/MP3 Playback controls
How to select MP3 files
Controls behind faceplate
USB and Front side AUX IN operations
Remote control functions
How to use bluetooth in your car audio
Wiring diagram
Troubleshooting
Specifications
2
3
4
4
5
5
6
7
8
9
10
10
11
12
13-14
15
16
17
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2
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3
Installation
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4
Release Button
press RELEASE to release
the front panel...
Before removing the bezel, press the
RELEASE button to remove the front panel.
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5
Release Button
press RELEASE to release
the front panel...
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6
Front panel controls
GENERAL CONTROLS
POWER Press any button to turn unit ON. To turn
head unit off, press and hold POWER.
RELEASE Press to release and remove the front panel.
DISP Selects radio frequency or clock display.
To set the clock:
1. With clock display selected, hold down (DISP) button until
clock display starts flashing.
2. Rotating VOL left to change minutes, VOL right to change
hours.
3. Press (DISP) button to start clock
BEEP MODE When press the AUDIO button for more than 2 seconds, it is activated as selecting mode of these function.
BEEP ON: BEEP sound can hear from speaker when the buttons are pressed.
The Liquid Crystal Display will display the current state of the unit.
MULT ON/OFFMULT
DSP
AUDIO
2 sec.
AUDIO
AUDIO
DSP
AUDIO
2 sec.
POP --- ROCK --- CLASSIC --- FLAT --- DSP OFF
VOL
LOUD ON/OFF
DSP
AUDIO
2 sec.
AUDIO
LOUD
AUDIO
LOUD
VOL
WOOF ON/OFF
WOOF
VOL
VOL
SCROLL
AUDIO
SCROLL 1/2
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
WOOF
ESP
AUDIO
ESP 10/40
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
WOOF
ESP
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
WOOF
ESP
AUDIO
MULT ON/OFFMULT
DSP
AUDIO
2 sec.
AUDIO
AUDIO
DSP
AUDIO
2 sec.
POP --- ROCK --- CLASSIC --- FLAT --- DSP OFF
VOL
LOUD ON/OFF
DSP
AUDIO
2 sec.
AUDIO
LOUD
AUDIO
LOUD
VOL
WOOF ON/OFF
WOOF
VOL
VOL
BEEP
AUDIO
BEEP ON/OFF
VOL
SCROLL
AUDIO
SCROLL 1/2
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
WOOF
ESP
AUDIO
ESP 10/40
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
WOOF
ESP
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
WOOF
ESP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
WOOF
ESP
AUDIO
SCROLL MODE When press the AUDIO button for more than 2 seconds, it is
activated as selecting mode of these function.
SCROLL 1: Unit displays song details but no text scrolling.
SCROLL 2: Unit displays song details and scrolls the text information to the left.
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