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7

Receiver Basic Operation

1. Switch the receiver “ON” by depressing the Power ON/OFF Volume control knob (1).
2. Depress the Band Selector( 3) to the desired position. In the AM mode, AM 

will be visible in the LCD display (10). In the FM mode, one of FM1, FM2 or FM3 

will appear on the LCD Display (10).

3. Depress the CD button (4) to toggle the functions of the radio .The sequence displayed
will be : Radio—USB—CDC—AUX—Radio. 

Radio Station Tuning

Seek Tuning:

To tune the receiver a slight turn and release will seek the next available radio station. A
clockwise rotation tunes the radio up-wards and counter clockwise tunes the radio down-
wards. 

Manual Tuning:

To manually tune the receiver a slight turn and hold (the lcd display will show (MANUAL)
until the desired station is shown on the display. The tuner will stay in manual mode for 5
seconds unless the tuning knob is turned again. After 5 seconds the tuning will revert to
auto seek.

Programming The Preset Memory

The USA-630 features 4 AM and 12 FM station
memory presets. Using the buttons (6) thru (9)
located across the bottom of the display will access
these presets.

A-FM Programming

1. Set the Band Selector (2) in the FM position (one of the FM bands) and view the FM       

Band Indicator on the LCD Display(10).

2. Select the station desired by using the Manual UP- Down Tuning Control (4) 
3. Depress one of the 4 preset buttons (6-9) for approximately 5 seconds.The the sound

will fade out momentarily and return again.The station is now programmed at that
button and the Preset Channel will appear on the LCD display (10).

4. Repeat above 2-3 steps to program another station on another button. Repeat above

steps until 4 stations are programmed in FM 2 and 4 in FM 3 for a total of 12 stations.

B-AM Programming

1. Repeat the steps 2-3 above but with the Band Selector (2) in the AM band.

8

BAND

TUNING

PRESS

ON/OFF

VOLUME

CD / MODE

CHANGE BUTTON

Tuner

Mode

Pre-set

Number

Stereo

Indicator

pre-set

#1

pre-set

#2

pre-set

#3

pre-set

#4

fig.4

fig.3

Sound Controls

Pressing tuning knob (4) will toggle the LCD display in this order - (VOL)--

(BAS)--(TRB)--(BAL L_R)--(FAD F_R). If an adjustment is not made or the tun-
ning knob not pressed for 5 seconds the display will revert to regular function.

Adjust Balance

(Left to

Right)
1. Press tuning knob (4) until
the display shows BAL L-R.
2. Rotate volume control
knob (1) to adjust the speak-
er balance from left to right.
The display will read from10L to 10R or L--R if set in the middle. Adjust the bal-
ance until you can hear speakers evenly from both sides.

Adjust Fader

(Front to

Rear) in 4 speaker system
1. Press tuning knob (4) until
the display shows FAD F--R.
2. Rotate the volume control
knob (4) to adjust the sound
from front to rear. The dis-
play will read 10F to 10R or F--R if set in the middle. Adjust balance until you
can hear speakers evenly from front and rear. 

Adjust Bass

1. Press tuning knob (4) until
the display shows BAS.
2. Rotate volume control knob
(1) clockwise to increase bass
and counter clockwise to
decrease. Be aware that a bass
level that is to high may cause distortion from your speakers.

Adjust Treble

1. Press tuning knob (4) until
the display shows TRB.
2. Rotate volume control knob
(1) clockwise to increase treble
and counter clockwise to
decrease. Be aware that a tre-
ble level that is to high may
cause distortion. 

PRESS

PRESS

TURN

TURN

TURN

TURN

PRESS

PRESS

Summary of Contents for USA-630

Page 1: ...oblems costs incurred for removal or reinstallation of product or damage of tapes speakers accessories or car electrical systems This warranty does not apply to any product or part thereof which has been damaged through alteration mishandling misuse neglect or accident ANY IMPLIED WARRANTY IS LIMITED TO THE DURATION OF THIS WRIT TEN WARRANTY UNDER NO CIRCUMSTANCES SHALL THE COMPANY BE LIABLE FOR A...

Page 2: ...r Type PLL Frequency Range 87 5 108 MHz Image Rejection 50dB Quieting Sensitivity 4uV T H D 1 IF Rejection 60dB AM Section Frequency Range 530 1710KHz S N Ratio 50dB Selectivity 25dB Audio Section Output Channel 60X4 Output Impedance 4ohm per speaker Response 30Hz 18KHz USB File compatibility MP3 WMA General Power Supply 12VDC Negative Ground Speaker impedance 4 8 ohm Stand By Current 0 02A Chassi...

Page 3: ... advised that you do Not return defective units to your dealer There is generally no exchange e g as is standard Electronics Industry Policy Also most dealers do not have radio technicians test benches etc and a return to factory through a dealer can extend turn around times by weeks Please call Custom Autosound requesting technical assistance if a problem occurs We will gladly trouble shoot advis...

Page 4: ...pe off remaining speaker leads to prevent a short Plug in or wire the red power wire to a switched 12volt source Plug in or wire the orange memory wire to a constant 12volt source Wire the black ground wire to a clean solid chassis point or original ground wire from the factory radio Good Listening Audio quality is only as good as speaker quality 3 12 Antenna Noise A static or crackle heard throug...

Page 5: ...noise using the descriptions under Sources Of Electrical Noise To eliminate the noise follow the procedures described under Elimination of the specific noise source Noise Suppression 1 Check all ground connections Remove paint from painted surfaces to secure a good electrical ground 2 Check battery posts If contacts are corroded or loose clean and tighten both terminals 3 Check battery or add flui...

Page 6: ... will appear on the LCD 2 USA EURO FREQUENCY SELECTOR This feature is used to select how the radio receives signals for either USA or European channel spacing see fig 2 1 Disconnect the main power and the memory power 2 Move the channel space switch to USA position This changes the channel space to 200KHz for FM and 10KHz for AM Move channel space switch to EUR position to change the channel space...

Page 7: ...l the desired source is shown on the LCD display 10 CD Indicator Disc Number Track Number Disc Up Disc Down Track Up Track Down Track UP Down TURN USB Player The USB decoder is compatible with MP3 MPEG Audio Layer 3 and WMA Windows Media Audio files It is preferable to set up your flash drive thumb drive with a folder system This way you can advance to another set of songs folder by pressing the d...

Page 8: ... above 2 3 steps to program another station on another button Repeat above steps until 4 stations are programmed in FM 2 and 4 in FM 3 for a total of 12 stations B AM Programming 1 Repeat the steps 2 3 above but with the Band Selector 2 in the AM band 8 BAND TUNING PRESS ON OFF VOLUME CD MODE CHANGE BUTTON Tuner Mode Pre set Number Stereo Indicator pre set 1 pre set 2 pre set 3 pre set 4 fig 4 fig...

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