BOSS 638B User Manual

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MP3-CompatibleAM/FM CD Receiver

USER’S MANUAL

 

CONTENTS

 

Installation

2

DIN front-mountinstallation

3

DIN rear-mountinstallation

4

Removing the head unit

4

Detaching the front panel

5

Replacing the front panel

5

General controls

6

Radio controls

7

Audio controls

8

CD/MP3 Playback controls

9

How to select MP3 files

10

Controls behind faceplate

10

USB and SD/MMC operations

11

Remote control functions

12

How to use bluetooth in your car audio

13

Wiring diagram

14

Troubleshooting

15

Specifications

16

1

2

3

Before removing the bezel, press the

RELEASE button to remove the front panel.

press RELEASE to release

Release Button

the front panel...

 

4

press RELEASE to release

Release Button

the front panel...

 

5

Front panel controls

GENERAL CONTROLS

POWER Press any button to turn unit ON. To turn head unit o , 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

The Liquid Crystal Display will display the current state of the unit.

BEEP MODE When press the SEL button for more than 2 seconds, it is activated as selecting mode of these function.

2 sec.

SEL

ESP

SEL MULTI

SEL

BEEP

VOL

BEEP ON/OFF

 

 

 

 

 

 

BEEP ON: BEEP sound can hear from speaker when the buttons are pressed.

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RADIO CONTROLS

AS/PS Select six strong stations and store them in current band.

1.Select a band (if needed)

2.Hold A/PS button for more than three seconds. The new stations replace stations already stored in that band.

Preset Scan

Scan stations stored in current band

1.Select a band (if needed)

2.Touch A/PS for more than one second but less than three seconds. Radio pauses for five seconds at each station. Touch A/PS again to stop scanning when desired station is reached.

SCAN This key is operated as RADIO SCAN. The operation is similar as normal search but di erent thing is holding 5 seconds on every station detected in RADIO SCAN mode.

BAND Push this switch to select the desired band. Selection is made in regular sequence as FM-AM.

STATION PRESETS Six numbered preset button store and recall stations for each band.

Storing a station:

1.Select a band (if needed)

2.Select a station

3.Hold a preset button longer than one second. Preset station number appears in the display when station is saved.

Recall a station:

1.Select band (if needed)

2.Press a preset button for less than one second to select stored station.

TUNE BUTTONS When pressed for less than 1 second, these keys operate as manual tuning mode.

When pressed longer than 1 sec., they are operated as SEEK tuning mode. If the keys are not pressed for 3 seconds, they will return to SEEK mode again.

SEEK MODE When press this button for more than 2 seconds, it is activated as selecting mode of these function.

2 sec.

SEL

ESP

SEL MULTI

SEL BEEP

SEL SEEK

VOL

SEEK1 / SEEK 2

 

 

 

 

 

 

SEEK 1: When SEEK 1 mode is activated, AUTO SEEK SCAN is stopped when station is detected even user still push SEEK button.

SEEK 2: Auto SEEK SCAN is not stopped even station is detected if user push SEEK button. When release this SEEK button, then stop when station is detected.

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Front panel controls

AUDIO CONTROLS

EQ Press repeatedly to cycle through five modes: POP M, ROCK M,

CLASS, FLAT M or DSP OFF.

SUB Press and hold to engage subwoofer output.

LOUD Press this button to increase the level of bass output.

MUTE Press to silence the receiver. Press again to return to normal operation.

SOURCE By pressing this key, user can select AUX/TUNER/CD-

MP3/USB or MMC/SD mode.

AUDIO BUTTON and ROTARY CONTROL Press the button repeatedly to access Volume, Bass, Treble, Balance and Fader functions. Then use the knob to adjust the selected function.

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CD/MP3 PLAYBACK CONTROLS

EJECT Press to eject CD

TUNE/TRACK BUTTONS Press and release to advance to next track or to return to the beginning of the current track (track number will be displayed). Press and hold to fast forward or reverse. Play will begin at the point when you release the button.

PAUSE Press to pause CD playback. Press again to resume playback

ESP MODE When press AUDIO button for more than 2 seconds, it is activated as 12 sec. or 45 sec. of ESP mode can be selected.

2 sec.

SEL

ESP

VOL

ESP 12s. / 45s.

 

 

 

+10 10 TRACK UP SELECT: (In case of MP3 files)

-1010 TRACK DOWN SELECT: (In case of MP3 files)

SHUFFLE Press to play ALL tracks on the CD in random order.

REPEAT Press and release to continuously repeat same track. Press again to stop repeat cycle.

CD SCAN Press to hear first several seconds of each track on current disc. Press again to stop intro and listen to intro last previewed.

CD/MP3 Operation

To PLAY a CD gently insert a CD with the label side up into the disc slot. It will automatically load and begin playing the first track.

To EJECT a CD press EJECT to stop the CD playback and eject the CD from the slot. The receiver will automaticvally switch to radio mode.

To PAUSE a CD press PAUSE to stop playback temporarily. Press again to resume playback.

To SKIP TRACKS press theorkey to choose the next or preceding track.

To FAST FORWARD or REVERSE press and hold theorkey to the desired location on the disc. Releasing the button starts playback at the location.

To REPEAT a TRACK press REPEAT to continuously repeat the current track. Press again to return to normal playback mode.

To PREVIEW ALL TRACKS press CD SCAN to play the first several seconds of each track. Press it again to stop an play the current track being previewed.

To PLAY TRACKS IN RANDOM ORDER press SHUF to play ALL tracks on the CD in random mode. Press again to cancel this function.

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