Boss Audio Systems 637UA Manual download pdf (Page 4)

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BEEP ON/BEEP OFF

BEEP ON mode: The beep is generated when any key is pressed.

BEEP OFF mode: The beep sound is disabled.

VOL LAST/VOL DEFA

VOL LAST: The radio switches on at the actual volume it had when it was last

switched off.

VOL DEFA: After pressing SEL button, AVOL will be displayed. Then you can

pre-select a constant switch-on volume by using the VOL knob.

CLK ON/OFF

CLK ON: Clock will always show on the display when power off.

CLK OFF: Clock will disappear on the display when power off.

3. POWER ON/OFF & MUTE

When the unit is power off, the unit comes to on by pressing any button except

the EJECT and the RELEASE button.

When the unit is power on, press and hold the power button for more than 0.5

seconds, the unit goes into power off mode.

When the unit is power on, press the power to switch the MUTE state on/off.

4. LCD Display

5. CD SLOT

6&7. TUNE, SEEK, TRACK, SKIP UP / DOWN BUTTONS

a) During RADIO mode:

Press the >>| or |<< button briefly to manual tune up/down for the desired

radio station frequency step by step.

Press and hold the >>| or |<< button for longer 0.5 seconds, to automatically

tune up/down for the radio station frequency of strong signal.

b) During disc, USB playback mode:

Press the >>| button briefly to play next track.

Press the |<< button briefly to play the current track from the beginning of it

if the playing time is more than 2 seconds.

Press the |<< button briefly to play the previous track if the playing time is

less than 2 seconds.

Press the >>| or |<< button and hold to skip forwards or backwards, release

to resume normal playback.

8. PRESET STATION MEMORY AND TOP/>||, INT, RPT, RDM BUTTONS

a) During radio mode:

Go to any preset station by pressing one of the 6 preset station buttons (1-6).

If one of these buttons is pressed for more than 2 seconds, the station currently

being listened to will be memorized into the selected preset button.

b) During disc, USB mode:

1) Press the TOP/ >|| button briefly to interrupt the playback of the disc or USB.

Press again to resume normal playback of the disc or USB.

Press the TOP/>|| button and hold for approximately 0.5 seconds to play the

first track of the disc or USB.

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CARE FOR USING CD'S:

1. To keep the disc clean:

Before playing a disc, wipe it off with a clean, dust-free cleaning cloth.

Wipe the disc outwards from the disc center.

2. When one has already been inserted. Doing so may damage the unit

Do not attach any sticker or adhesive tape on the disc.

Handle the disc by its edge to keep the disc clean and do not touch the surface.

. Insert a disc

with labeled surface up, or it will damage the unit.

3. Do not expose the disc to direct sunlight or nearby heat sources such as heating

vents, caliduct which can cause the disc to warp.

Do not leave disc in a car if it is parked in direct sunlight as that will lead to a

considerable rise in the temperature inside the car.

4. Do not use any secondhand or rented disc, usually, there is glue on the surface of

those discs, it will stop the unit working and damage it.

5. Always store the disc in its case for protection. Scratched up discs will produce poor

sound performance and cause CD player to skip.

6. In raining day or wet area, the moisture may form on the disc or the optical parts,

the playback may not be possible. If moisture forms on the disc, wipe it off with a

soft cloth.

If moisture forms on the optical parts of the unit, allow the unit to sit for about one

hour with power on.

7. Do not use solvents such as benzine or thinners. Commercially available cleaners

or anti-static spray will damage the unit.

About CD-R/CD-R/W discs:

In addition to commercially-recorded audio CD's, this unit can play CD-R and

CD-R/W discs. In some cases, particularly when recorded on older CD burners,

some CD-R and CD-R/W discs may not play. Also, whenever you are recording

a CD for playback in this receiver, it is recommended that you record at 24x or

slower speed for CD-R and 4x or slower for CD-R/W to achieve higher signal

quality and better playback performance.

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