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5

10

Digital Display

The USA-630 features a multi-mode liquid crystal digital display(10). lt will perform as 

follows under various operating conditions (Page 7).

1.

When the USA-630 is switched OFF and/or ignition key is switched OFF the internal 

circuitry will continue to keep the stations that you have preset.

2

. When the USA-630 is switched ON in the radio mode, the display will indicate the 

currently tuned station.The time can be recalled by pressing the Menu button (5) 

The radio will revert back to the current station display after approximately 5 

seconds.

Receiver Special Functions
1.

Automatic Mono/Stereo(Built-ln)& Stereo Indicator

The built-in Automatic Mono/Stereo (FMO -Frequency Modulation Optimizer) is used

. .

to improve stereo FM reception in weak signal areas without manually changing

the mode.

When the FM station is too weak to receive a clear stereo signal, and noise and inter-
ference increases, the USA-630 will change its mode to Mono automatically. When the
USA-630 is tuned to a strong FM signal,the Stereo Indicator (fig.4) 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 to 50KHz for FM and 9KHz for AM.

Setting The Time

The following procedure must
be preformed with the radio ON.

1.

With the unit on press and 

release the Time/Frequency 
Recall Button (5) so the time is 

. . 

displayed. 

2.

Press and hold in the Time/ Frequency Recall Button (5) for 5 seconds. The hour and

minutes should be blinking on the display. Release the button and rotate the Manual

Tuning Control (4) gently to the right, the Hour will advance. Rotating the Manual 
Tuning Control (4) gently to the left, the Minutes will advance. You may have to

advance completely through the AM or PM hours to get the proper Hour.

4.

When finished setting the time, do not touch the radio. The hours and the minutes will 

.

stop blinking, the clock will show on the display for 5 seconds, and then will revert  

.   .

.   

back to the radio station display.

PRESS

Hours

Min.

AM/PM Hour Min.

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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