Optimus CR 307 User Manual

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Cat. No. 12-1610  
OWNER’S MANUAL  
Please read before using this equipment.  
CR-307  
AM/FMWeather Clock Radio  
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CONTENTS  
Preparation ........................................................................................................... 4  
Connecting Power ........................................................................................... 4  
Installing the Backup Battery .......................................................................... 4  
Setting the Time .............................................................................................. 5  
Using Headphones .............................................................................................. 6  
Listening Safely ............................................................................................... 6  
Clock Radio Operation ........................................................................................ 7  
Changing the Display Brightness .................................................................... 7  
Playing the Radio ............................................................................................ 7  
Using the Alarm .............................................................................................. 8  
Using Snooze .................................................................................................. 8  
Using the Sleep Timer ..................................................................................... 9  
Receiving Weather Broadcasts ........................................................................ 10  
Weather Radio Operation ............................................................................. 10  
Using the Alert Tone ...................................................................................... 10  
Testing Alert Operation ................................................................................. 11  
Testing Alert Reception ........................................................................... 11  
Using the ALERT TEST Button .............................................................. 12  
Care and Maintenance ...................................................................................... 13  
The FCC Wants You to Know ....................................................................... 13  
Specifications .................................................................................................... 14  
This symbol is intended to alert you  
to the presence of uninsulated dan-  
Warning: To prevent fire or shock  
hazard, do not expose this product  
to rain or moisture.  
gerous voltage within the product’s  
enclosure that might be of sufficient  
magnitude to constitute a risk of  
electric shock. Do not open the prod-  
uct’s case.  
CAUTION  
RISK OF ELECTRIC SHOCK.  
!
This symbol is intended to inform  
you that important operating and  
maintenance instructions are includ-  
ed in the literature accompanying  
this product.  
DO NOT OPEN.  
!
CAUTION: TO REDUCE THE RISK OF  
ELECTRIC SHOCK, DO NOT REMOVE  
COVER OR BACK. NO USER-SERVICE-  
ABLE PARTS INSIDE. REFER SERVIC-  
ING TO QUALIFIED PERSONNEL.  
The graphical symbols with supple-  
mental markings are on the bottom of  
the clock radio.  
3
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PREPARATION  
Notes:  
To prevent unnecessary drain on  
CONNECTING POWER  
Plug the clock radio’s power cord into  
a standard AC outlet. The display  
flashes.  
the backup battery, install the bat-  
tery after you plug in the AC  
power cord.  
• The BATTERY SENTINEL indica-  
tor lights when the battery is weak  
or missing. Replace the battery  
when the indicator lights or at  
least every 6 months.  
Illust.  
• If the display flashes after an AC  
power failure, the battery is too  
low to run the clock. Replace the  
battery and reset the clock.  
INSTALLING THE  
BACKUP BATTERY  
To keep the clock running during an  
AC power failure, install a 9-volt bat-  
tery. For the best performance, we  
recommend an alkaline battery such  
as RadioShack Cat. No. 23-553.  
• If your radio’s battery becomes  
weak during a power failure, your  
radio might not sound a tone  
when an emergency or test alert is  
broadcast. Test your radio’s  
reception periodically (see “Test-  
ing Alert Reception” on Page 11),  
and replace the battery if the tone  
does not sound.  
The clock’s display does not light  
while operating from battery backup  
power, but the clock runs and the  
weather alert feature works. While the  
clock radio is operating from battery  
backup power:  
Cautions:  
• Remove the battery if you do not  
plan to use the clock radio for a  
week or more. Batteries can leak  
chemicals and damage the radio.  
— If you set FM/AM/WX/ALERT to FM,  
AM, or WX, the clock runs and the  
clock alarm will still sound at the  
preset alarm time for up to 8  
hours.  
• Use only a fresh battery of the  
required size and type. Do not use  
a rechargeable battery in your  
radio.  
— If you set FM/AM/WX/ALERT to  
ALERT, the clock runs and the  
clock alarm will still sound at the  
preset alarm time, but only for up  
to 3 hours.  
4
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Follow these steps to install the back-  
up battery.  
SETTING THE TIME  
1. While you press and hold TIME,  
press HOUR. The hour digits  
advance by 1 each time you press  
HOUR. You can press and hold  
HOUR to rapidly advance the hour  
digits.  
1. Press the tab and lift off the bat-  
tery compartment cover.  
Illust.  
Illust.  
2. Snap the battery onto the battery  
connector and place the battery in  
the compartment.  
The PM indicator appears  
in the upper left corner of the dis-  
play for a PM hour.  
Note:  
2. While you press and hold TIME,  
press MINUTE. The minute digits  
advance by 1 each time you press  
MINUTE. You can press and hold  
MINUTE to rapidly advance the  
minute digits.  
Illust.  
Illust.  
3. Replace the cover.  
4. Press SNOOZE to turn off the BAT-  
TERY SENTINEL indicator.  
You can press and hold SLEEP  
Note:  
and ALARM together to display the  
seconds and one digit of the minutes.  
5
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USING HEADPHONES  
For private listening, you need a pair of  
headphones (not supplied) with a /8-  
LISTENING SAFELY  
1
inch (3.5 mm) plug. Your local Ra-  
dioShack store has a wide selection of  
headphones.  
To protect your hearing, follow these  
guidelines when you use headphones.  
• Set the volume to the lowest set-  
ting before you begin listening.  
After you begin listening, adjust  
the volume to a comfortable level.  
Plug the headphones into the EAR-  
PHONE jack on the back of the clock  
radio.  
• Do not listen at extremely high  
volume levels. Extended high vol-  
ume listening can lead to perma-  
nent hearing loss.  
Illust.  
• Once you set the volume, do not  
increase it. Over time, your ears  
adapt to the volume level, so a  
volume level that does not cause  
discomfort might still damage your  
hearing.  
Note: When you connect head-  
phones, the internal speaker is auto-  
matically disconnected.  
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CLOCK RADIO OPERATION  
3. Set FM/AM/WX/ALERT to FM or  
AM.  
CHANGING THE  
DISPLAY BRIGHTNESS  
You can change the display bright-  
ness by setting DIMMER to HIGH or  
LOW.  
Illust.  
4. Rotate TUNING to the desired sta-  
Illust.  
tion.  
Illust.  
PLAYING THE RADIO  
Follow these steps to listen to AM or  
FM radio broadcasts.  
5. Adjust VOLUME to the desired  
sound level.  
Note: To listen to National Weather  
Service broadcasts, see “Weather Ra-  
dio Operation” on Page 10.  
Illust.  
1. Rotate VOLUME to set the radio’s  
volume to its minimum level.  
2. Set FUNCTION to ON.  
6. To turn off the radio, set FUNC-  
TION to OFF.  
Notes:  
Illust.  
• For the best AM reception, rotate  
the clock radio (the AM antenna is  
built-in).  
• For the best FM reception, fully  
extend the power cord (the power  
cord is also the FM antenna).  
7
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ALARM  
To sound the buzzer  
USING THE ALARM  
at the preset alarm time.  
You can set an alarm so the buzzer  
sounds or the radio plays at a speci-  
fied time. Follow these steps to set the  
alarm time.  
AUTO  
To turn on the radio at  
the preset alarm time. If you set  
FUNCTION AUTO,  
VOLUME  
to  
adjust  
for the desired radio  
sound level.  
FUNCTION  
OFF  
1. Set  
to  
.
5. At the preset alarm time, the  
buzzer sounds or the radio plays.  
To silence the buzzer or radio, set  
ALARM  
2. While you press and hold  
,
HOUR  
press . The hour digits  
advance by 1 each time you press  
FUNCTION  
OFF  
ALARM  
or press  
to  
HOUR  
HOUR  
digits.  
. You can press and hold  
to rapidly advance the hour  
once. If you do not manually turn  
off the buzzer or radio, it contin-  
ues to sound for about 2 hours,  
then sounds again the next day.  
Illust.  
Notes:  
• The ALARM indicator lights in the  
lower left corner of the display  
when the buzzer or radio is set to  
sound.  
Note: The PM indicator appears  
in the upper left corner of the dis-  
play for PM hours.  
ALARM  
• Press  
to view the preset  
alarm time at any time.  
ALARM  
3. While you press and hold  
MINUTE  
,
press  
. The minute digits  
USING SNOOZE  
advance by 1 each time you press  
MINUTE  
MINUTE  
. You can press and hold  
to rapidly advance the  
To temporarily silence the buzzer or  
SNOOZE  
radio, press  
. The alarm auto-  
minute digits.  
matically sounds again after about 9  
minutes.  
Illust.  
You can repeat this for at least 2  
FUNC-  
hours. To turn off the alarm, set  
TION OFF  
to  
.
FUNCTION  
4. Set  
to one of the fol-  
lowing:  
8
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To play the radio for the maximum  
of 2 hours:  
USING THE SLEEP  
TIMER  
SLEEP  
— Press and hold  
. The  
The sleep timer lets you set the radio  
to play for up to 2 hours then automat-  
ically turn off, so you can have the ra-  
dio play as you go to sleep.  
clock radio displays 0:59.  
SLEEP  
— While you hold  
, press  
HOUR  
once. The time increas-  
es to 1 hour, 59 minutes.  
To use the sleep timer, first make sure  
Note: The radio turns off after 1  
hour, 59 minutes, 59 seconds (2  
hours). You cannot adjust the sec-  
onds.  
FUNCTION  
the radio is off by setting  
OFF  
to  
.
Follow these guidelines to set the  
sleep timer to the desired time.  
To play the radio for more than 1  
hour, but less than 2 hours:  
SLEEP  
— Press and hold  
. The  
Illust.  
clock radio displays 0:59.  
SLEEP  
— While you hold  
, press  
HOUR  
once. The time increas-  
es to 1 hour, 59 minutes.  
— While you continue to hold  
SLEEP  
MINUTE  
. The  
, press  
minutes decrease by 1 each  
MINUTE  
To play the radio for 1 hour, press  
SLEEP  
once.  
time you press  
MINUTE  
play time.  
. Hold  
to rapidly decrease the  
To play the radio for less than 1  
hour:  
SLEEP  
— Press and hold  
. The  
To turn off the radio before it automat-  
SNOOZE  
clock radio displays 0:59.  
ically turns off, press  
.
SLEEP  
— While you hold  
, press  
. The minutes decrease  
by 1 each time you press  
MINUTE MINUTE  
MINUTE  
Illust.  
. Hold  
to rapid-  
ly decrease the play time.  
9
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RECEIVING WEATHER BROADCASTS  
5. Set WX ANTENNA to LINE.  
WEATHER RADIO  
OPERATION  
Illust.  
Follow these steps to receive National  
Weather Service broadcasts.  
1. To turn on the radio, set FUNC-  
TION to ON.  
Note: If the signal is broken or  
noisy, set WX ANTENNA to ROD.  
Then extend the telescoping  
antenna to its full length. If recep-  
tion is still not clear, try placing the  
radio near an outside wall or win-  
dow.  
Illust.  
2. Set FM/AM/WX/ALERT to WX.  
6. To turn off the radio, set FUNC-  
TION to OFF.  
Illust.  
USING THE ALERT TONE  
You can set the radio to alert you only  
when it detects a weather emergency  
broadcast so you do not have to con-  
tinuously listen to the National Weath-  
er Service broadcasts.  
3. Adjust VOLUME to a comfortable  
listening level.  
4. Set CHANNEL to the channel (1–7)  
that produces the clearest signal.  
1. Set FUNCTION to ON and FM/AM/  
WX/ALERT to ALERT to set the  
radio to the alert mode. The  
ALERT indicator lights, and the  
receiver is silent.  
Illust.  
Illust.  
10  
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2. Set ALERT LOCK as follows:  
TESTING ALERT  
OPERATION  
Illust.  
For your radio to be effective, you  
must place the radio:  
• Where it can receive an emer-  
gency alert signal (see “Testing  
Alert Reception”)  
ON — When the radio receives  
an alert signal, the siren sounds  
continuously until you change  
the FM/AM/WX/ALERT or ALERT  
LOCK setting.  
• Where you can hear its alert tone  
(see “Using the ALERT TEST But-  
ton”)  
Once you determine a location that  
meets these two conditions, leave the  
radio there for the best protection.  
OFF — When the radio receives  
an alert signal, the siren sounds  
only during the 10-second alert  
signal.  
Testing Alert Reception  
3. To silence the siren, set FM/AM/  
WX/ALERT to WX. You hear the  
current weather broadcast.  
The fact that you get clear voice re-  
ception or that the tone sounds when  
you set ALERT TEST to ON (see “Us-  
ing the ALERT TEST Button”) does  
not guarantee that an emergency alert  
signal will trigger your radio’s alert  
tone. Also, if you are in a fringe area,  
an emergency alert signal might trig-  
ger your radio while it is in one place,  
but not in another place (even close  
by).  
Notes:  
• If severe weather threatens, do  
not wait for an alert tone; turn on  
your radio and monitor the latest  
weather information.  
• With ALERT LOCK set to OFF, the  
alert sounds for 10 seconds. If you  
set the switch to WX immediately  
after the siren starts to sound, you  
hear the tone for a short period,  
and then the emergency informa-  
tion.  
To test for actual reception, your radio  
must receive a test or emergency alert  
signal. The National Weather Service  
(NWS) broadcasts a test alert every  
week on Wednesday between 11 AM  
and 12 Noon.  
• The radio sounds the alert siren at  
full power, regardless of the  
radio’s volume setting.  
11  
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To find out the specific test schedule  
in your area, contact your local Na-  
tional Oceanic and Atmospheric Ad-  
ministration (NOAA) or National  
Weather Service office. These offices  
are usually listed in the telephone  
book under “US Government.”  
Using the ALERT TEST  
Button  
The ALERT TEST button lets you hear  
the alert tone the radio produces but  
does not test the radio’s receiver or in-  
dicate that your radio will receive an  
emergency alert.  
To verify that your radio receives the  
test alert properly, set ALERT LOCK to  
ON during the time when the test tone  
is broadcast in your local area.  
1. Set FUNCTION to ON and set FM/  
AM/WX/ALERT to ALERT.  
2. Set ALERT TEST to ON. While the  
tone sounds, walk away from the  
radio to determine how far away  
from it you can get and still hear  
the tone.  
If the test alert signal does not trigger  
your radio’s tone, you are either out of  
range of the signal or AC power is dis-  
connected and your radio’s backup  
battery is weak.  
Illust.  
If you take the radio with you to  
Note:  
use when you travel, you cannot be  
sure that an emergency alert signal  
will trigger the radio in its new location,  
unless you test it during the test alert  
time in the new area.  
Notes:  
• If ALERT LOCK is set to ON, the  
tone sounds until you set FM/  
AM/WX/ALERT to WX, AM, or  
FM.  
• If ALERT LOCK is set to OFF,  
the tone sounds only while  
ALERT TEST is set to ON.  
3. To stop the alert sound, set ALERT  
TEST to OFF.  
12  
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CARE AND MAINTENANCE  
Your Optimus CR-307 AM/FM Weath-  
Modifying or tampering with the clock  
radio’s internal components can  
cause a malfunction and might invali-  
date your clock radio’s warranty and  
void your FCC authorization to oper-  
ate it. If your clock radio is not per-  
forming as it should, take it to your  
local RadioShack store for assistance.  
er Clock Radio is an example of supe-  
rior design and craftsmanship. The  
following suggestions will help you  
care for your clock radio so you can  
enjoy it for years.  
• Keep the clock radio dry. If it gets  
wet, wipe it dry immediately. Liq-  
uids might contain minerals that  
can corrode the electronic circuits.  
THE FCC WANTS YOU  
TO KNOW  
• Use and store the clock radio only  
in normal temperature environ-  
ments. Temperature extremes can  
shorten the life of electronic  
devices and distort or melt plastic  
parts.  
Your clock radio might cause TV or ra-  
dio interference even when it is oper-  
ating properly. To determine whether  
your clock radio is causing the inter-  
ference, turn off your clock radio. If the  
interference goes away, your clock ra-  
dio is causing it. Try to eliminate the  
interference by:  
• Keep the clock radio away from  
dust and dirt, which can cause  
premature wear of parts.  
• Handle the clock radio gently and  
carefully. Dropping it can damage  
circuit boards and the case and  
can cause the clock radio to work  
improperly.  
• Moving your clock radio away  
from the receiver  
• Contacting your local RadioShack  
store for help  
• Use only a fresh battery of the  
required size and type. Old batter-  
ies can leak chemicals that dam-  
age your clock radio’s electronic  
parts.  
If you cannot eliminate the interfer-  
ence, the FCC requires that you stop  
using your clock radio.  
• Wipe the clock radio with a damp  
cloth occasionally to keep it look-  
ing new. Do not use harsh chemi-  
cals, cleaning solvents, or strong  
detergents to clean the clock  
radio.  
13  
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SPECIFICATIONS  
Bands:  
AM ............................................................................................... 530–1710 kHz  
FM .................................................................................................. 88–108 MHz  
Intermediate Frequency:  
AM ......................................................................................................... 455 kHz  
FM ....................................................................................................... 10.7 MHz  
Frequency Coverage:  
Channel 1 ...................................................................................... 162.400 MHz  
Channel 2 ...................................................................................... 162.425 MHz  
Channel 3 ...................................................................................... 162.450 MHz  
Channel 4 ...................................................................................... 162.475 MHz  
Channel 5 ...................................................................................... 162.500 MHz  
Channel 6 ...................................................................................... 162.525 MHz  
Channel 7 ...................................................................................... 162.550 MHz  
Power Output...............................................................................Maximum 300 mW  
Power Supply.............................................................. 120 Volts, 60 Hz, 5 Watts AC  
Battery Backup............................................................................. One 9-Volt Battery  
Speaker...................................................................... Ferrite, Dynamic-Type, 8 ohm  
Speaker Diameter ........................................................................................ 3 Inches  
(7.62 cm)  
Antenna............................................................................Telescoping Rod and Wire  
Dimensions (HWD) ....................................................................21/2 x 9 x 51/2 Inches  
(63 x 229 x 140 mm)  
Weight...........................................................................................................27.5 oz.  
(779 g)  
Specifications are typical; individual units might vary. Specifications are subject to  
change and improvement without notice.  
14  
12-1610.fm Page 15 Friday, July 9, 1999 10:10 AM  
NOTES  
15  
12-1610.fm Page 16 Friday, July 9, 1999 10:10 AM  
Limited Ninety-Day Warranty  
This product is warranted by RadioShack against manufacturing defects in material and workman-  
ship under normal use for ninety (90) days from the date of purchase from RadioShack company-  
owned stores and authorized RadioShack franchisees and dealers. In the event of a product defect  
during the warranty period, take the product and the RadioShack sales receipt as proof of purchase  
date to any RadioShack store. RadioShack will, at its option, unless otherwise provided by law:  
(a) correct the defect by product repair without charge for parts and labor; (b) replace the product  
with one of the same or similar design; or (c) refund the purchase price. All replaced parts and prod-  
ucts, and products on which a refund is made, become the property of RadioShack. New or recondi-  
tioned parts and products may be used in the performance of warranty service. Repaired or replaced  
parts and products are warranted for the remainder of the original warranty period. You will be  
charged for repair or replacement of the product made after the expiration of the warranty period.  
This warranty does not cover: (a) damage or failure caused by or attributable to acts of God, abuse,  
accident, misuse, improper or abnormal usage, failure to follow instructions, improper installation or  
maintenance, alteration, lightning or other incidence of excess voltage or current; (b) any repairs  
other than those provided by a RadioShack Authorized Service Facility; (c) consumables such as  
fuses or batteries; (d) cosmetic damage; (e) transportation, shipping or insurance costs; or (f) costs  
of product removal, installation, set-up service adjustment or reinstallation.  
EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES AND ANY  
IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A  
PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN  
LIMITED WARRANTIES CONTAINED HEREIN. EXCEPT AS PROVIDED HEREIN, RadioShack  
SHALL HAVE NO LIABILITY OR RESPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON  
OR ENTITY WITH RESPECT TO ANY LIABILITY, LOSS OR DAMAGE CAUSED DIRECTLY OR  
INDIRECTLY BY USE OR PERFORMANCE OF THE PRODUCT OR ARISING OUT OF ANY  
BREACH OF THIS WARRANTY, INCLUDING, BUT NOT LIMITED TO, ANY DAMAGES RESULT-  
ING FROM INCONVENIENCE, LOSS OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR  
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, EVEN IF Ra-  
dioShack HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.  
Some states do not allow the limitations on how long an implied warranty lasts or the exclusion of in-  
cidental or consequential damages, so the above limitations or exclusions may not apply to you.  
This warranty gives you specific legal rights, and you may also have other rights which vary from  
state to state.  
RadioShack Customer Relations, Dept. W, 100 Throckmorton St., Suite 600, Fort Worth, TX 76102  
We Service What We Sell  
1/97  
RadioShack  
A Division of Tandy Corporation  
Fort Worth, Texas 76102  
3A7  
Printed in Hong Kong  

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