Boss Audio Systems 648UA user manual Care for Using CDS, Selmenu Button and Volume UP + / DN Konb

CARE FOR USING CD'S:

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.

1. To keep the disc clean:

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. 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. 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.

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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.SEL(MENU) BUTTON AND VOLUME UP ( + )/ DN ( - ) KONB

a)Press the SEL button briefly, it is activated as selecting each mode of E. VOL. -> VOLUME ->BASS ->TREBLE -> BALANCE -> FADER ->

When selecting a desired audio mode, rotate the VOL knob to adjust the audio effect.

In each mode, the waiting time is about 5 seconds, and when the waiting time is over, it returns to the last display mode of tuner or CD mode.

The control mode of E.VOL is operated with following numeric display.

-VOL: (MIN)00, 01,......46, 47(MAX).

-BASS/TRE: -07, -06,...,00,...+06,+07

-BAL: 0LR9, 1LR9, ..., 9LR9,..., 9LR1, 9LR0

-FAD: 0FR9,1FR9, ..., 9FR9,..., 9FR1, 9FR0

b)When pressed longer 2 seconds, it show the time then it is activated as cyclical mode of following functions for user’s selection.

->TA(ON/OFF) -> AF(ON/OFF) -> TA (ALARM/SEEK) ->PI (SOUND/MUTE) ->RETUNE (LONG/SHORT)->MASK(DPI/ALL) ->BEEP (ON/OFF)

-> USER SET(FLAT/CLASSIC/ROCK/POP)->VOL(LAST/DEFA)

-> EUROPE/AMERICA(in radio mode) ->MONO/STEREO(only for FM mode) ->LOUD(ON/OFF) ->LOCAL/DX(only for FM mode) ->CLK(ON/OFF) ->CLK(12/24)mode->CLK 00’00(you can adjust HOUR or MINUTE by rotating the VOL knob).

After selecting the desired mode, rotate the VOL knob to select one setup item of the desired mode.

1) TA [TRAFFIC ANNOUNCEMENT]

When TA mode is on(TA is displayed on LCD), it will begin to seek TA station and TA SEEK will be displayed on LCD for a while.

When traffic announcement is transmitted:

(1)If the unit is in USB or disc mode, it will switch to radio mode temporarily. Temporarily switch over to an EON linked station when EON detects a traffic announcement on that other program, and TP will be displayed on LCD

(2)If volume level is below 20, volume level is raised to 20, and returns to its previous mode and volume level when the traffic announcement is over.

(3)If volume is adjusted during traffic announcement, only the traffic announcement volume is valid.

* TA interruption function:

The current traffic announcement is cancelled by pressing this key. But the TA mode will not be off.

*When TA is on, SEEK, (SCAN), AUTO MEMORY function can be received or saved only when traffic program identification code has been received.

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