Cat. No. 12-1586A
OWNER’S MANUAL
Please read before using this equipment.
Chronomatic-278
AM/FM LED Alarm Clock Radio
FEATURES
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y
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CAUTION
Your Chronomatic-278 AM/FM LED
Alarm Clock Radio with Battery Backup and Battery Sentinel combines a
superior electronic design with these
special features:
Lar
e Digital Display
— makes the
clock easy to read.
Push Button Operation
— makes the
clock radio easy to use.
Dimmer
— lets you adjust the dis-
play’s brightness.
Sleep Feature
— lets you program the
radio to play for up to 1 hour 59 minutes before it automatically turns off.
Snooze Timer
— temporarily silences
the buzzer or radio alarm so it sounds
again in about 9 minutes.
Batter
nel
Backup with Battery Senti-
®
— maintains cloc k and al arm operation for up to 8 hours if the power is
interrupted, and indicates when you
need to replace the backup battery.
Warnin
: To prevent fire or shock hazard, do not expose t his product to rain
or moisture.
RISK OF ELECTRIC SHOCK.
DO NOT OPEN.
CAUTION
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
!
: TO REDUCE THE RISK OF
This symbol is intended to alert you
to the p r es en c e o f un in su lated d an gerous voltage within the product’s
enclosure that might be of sufficient
magnitude to constitute a risk of
electric shock. Do not open the
product’s case.
This symbol is intended to inform
you that important operating and
maintenance instructions are included in the literature accompanying this product.
!
2
© 1995 Tandy Corporation.
All Rights Reserv ed .
Battery Sentinel, Chronomatic, and Radio Shack are registered trademarks
used by Tandy Corporation.
CONTENTS
ying
Preparation ........................................................................................................... 4
Connecting Power ........................................................................................... 4
Installing the Backup Battery .......................................................................... 4
Adjusting the Display ...................................................................................... 4
Clock Operation ................................................................................................... 5
Setting the Time .............................................................................................. 5
Resetting the Seconds ............................................................................. 5
Using the Alarms ............................................................................................. 6
Setting the Alarm Time ............................................................................. 6
Using the Buzzer Alarm ............................................................................ 6
Using the Radio Alarm .............................................................................. 6
Using the Snooze Feature .............................................................................. 7
Using the Sleep Timer ..................................................................................... 7
Pla
Care and Maintenance ........................................................................................ 9
Specifications .................................................................................................... 11
the Radio ................................................................................................ 8
FCC Information ............................................................................................ 10
3
PREPARATION
CONNECTING POWER
Plug the Chronomatic-278’s power
cord into a standard AC outlet. The display flashes when the radio is first
plugged in or if the power is interrupted
and the backup battery is missing or
weak.
INSTALLING THE
BACKUP BATTERY
To keep the clock running in the event
of a power failure, install a 9-volt backup battery (not supplied). We recommend an alkaline battery, such as
Radio Shack Cat. No. 23-553. A f resh
battery powers the clock for up to 8
hours, and sounds the alarm for up to
10 minutes if power fails.
• If the display flashes after a power
failure, replace the battery and
reset the clock.
1. To remove the battery compartment cover, press and hold the
tab in the direction of the arrow
then lift off the cover.
2. Snap the battery into the terminals
and place it in the compartment.
Caution:
of the required size and type.
3. Replace the cover.
Use only a fresh battery
Notes:
• Before you install the backu p battery, plug in the power cord to prevent unnecessary drain on the
battery.
• Replace the battery when BATTERY SENTINEL on the right side
of the display lights.
4
ADJUSTING THE
DISPLAY
DIMMER LOW/HIGH
Set
HIGH
, depending on the amount of
light in the room.
to
LOW
or
CLOCK OPERATION
SETTING THE TIME
1. Press and hold
press
HOUR
advance by 1 each time you press
HOUR
. Press and hold
rapidly advance the hour digits.
The PM indicator appears
Note:
on the top left of the display at
12:00 noon and disappears at
12:00 midnight.
2. While you hold down
MINUTE
press
advance by 1 each time you press
MINUTE
. Press and hold
to rapidly advance the minute digits.
TIME SET
. The hour digits
TIME SET
. The minute digits
, then
HOUR
MINUTE
to
Resetting the Seconds
This feature lets you reset the seconds
to zero. This is handy if you want to set
the clock to a precise reference time.
Follow these steps to reset the seconds.
1. Press and hold
ALARM SET
the set time’s minutes and seconds.
,
2. Continue to press and hold
SLEEP
, then press
seconds reset to zero.
SLEEP
. The display shows
, then press
HOUR
. The
3. Release
TIME SET
when the
desired time appears on the display.
SLEEP
3. Release
The minutes advan ce by one if
Note:
.
the display showed m ore t han 29 seconds when you reset the seconds.
5
USING THE ALARMS
Using the Buzzer Alarm
Setting the Alarm Time
1. Set
2. Press and hold
3. While you hold do wn
ALARM/AUTO/OFF/ON
ALARM SET
HOUR
press
. The time on the d isplay advances by one hour each
time you press
HOUR
to rapidly advance the hour
HOUR
. Hold down
digits.
ALARM SET
MINUTE
press
. The time on the
display advances by one minute
each time you press
MINUTE
down
MINUTE
to rapidly advance
the minute digits.
to
OFF
, then
. Hold
To turn on the buzzer alarm, set
ALARM/AUTO/OFF/ON
to
ALARM
.
.
At the preset time, the alarm sounds
and automatically turns off after 1 hour,
59 minutes.
To turn off the alarm before 1 hour, 59
minutes, set
OFF
.
ALARM/AUTO/OFF/ON
to
To adjust the volume of the alarm
sound, rotate
VOLUME
.
Using the Radio Alarm
To turn on the radio alarm, set
,
AUTO/OFF/ON
to
AUTO
station and volume are set. See “Playing the Radio.”
At the preset time, the radio turns on
and automatically turns off after 1 hour,
59 minutes.
ALARM/
. Be sure the
4. Release
ALARM SET
when the
desired alarm time appears on the
display .
To view the preset al arm time at any
time, press
ALARM SET
.
6
To turn off the radio before 1 ho ur, 59
minutes, set
OFF
.
ALARM/AUTO/OFF/ON
to
USING THE SNOOZE
FEATURE
To temporarily silence the buzzer or
radio so it sounds again after 9 minutes, press
this until you set
OFF
to
SNOOZE
. You can repeat
ALARM/AUTO/OFF/ON
to turn off the alarm.
To reset the alarm to sound again at
the same alarm t ime on the next day,
ALARM/AUTO/OFF/ON
set
ALARM
Note:
while you press
AUTO
or
.
If BATTERY SENTINEL lights
SNOOZE
back to
, the backup
battery is getting low.
USING THE SLEEP
TIMER
The sleep timer lets you set the radio
to play for up to 1 hour 59 minutes,
then automatically turn off. This is useful if you want the radio to play as you
go to sleep.
To play the radio for 59 minutes, press
SLEEP
once.
0:59
appears on the
display. The radio plays for 59 minutes, then turns off.
To play the radio for more than 59 minutes, press and hold
SLEEP
0:59
.
appears on the display and the radio
begins to play. While you hold down
SLEEP
, press
pears. Then press
HOUR
once.
MINUTE
1:59
ap-
until the
display shows the desired sleep time.
To play the radio f or le ss tha n 59 m inutes, press and hold
SLEEP
0:59
.
appears on the display and the radio
begins to play. While you hold down
SLEEP
, pr es s
MINUTE
. The time on the
display decreases by one minute each
time you press
MINUTE
.
To use the sleep timer, set
AUTO/OFF/ON
Note:
You can set
AUTO
ON
to
to
or
OFF
.
ALARM/AUTO/OFF/
ALARM
if you want to
ALARM/
use the sleep timer with the alarm
function.
Note:
Hold down
MINUTE
to rapidly de-
crease the playing time.
To turn off the radio before the preset
sleep time has elapsed, press
SNOOZE
.
7
PLAYING THE RADIO
1. Rotate
level.
2. Set
3. Set
ALARM/AUTO/OFF/ON
FM/AM
4. Rotate
quency.
VOLUME
to its minimum
to the desired band.
TUNING
to the desired fre-
to ON.
6. To turn off the radio, set
AUTO/OFF/ON
The AM antenna is built in. Ro-
Note:
to
OFF
ALARM/
.
tate the clock radio for the best AM reception. For the best FM reception,
fully extend the AC power cord (which
is the FM antenna).
5. Rotate
listening level.
8
VOLUME
to a comfortable
CARE AND MAINTENANCE
Your clock radio is an example of superior design and craftsmanship. The following
suggestions will help you care for your clock radio s o you can enjoy it for ye ars.
Keep the clock radio dry. If it gets wet, wipe it dry immediately. Liquids
might contain minerals that can corrode the electronic circuits.
Handle the clock radio gently an d c arefully. Droppin g it can damage
circuit boards and cases and can cause the clock radio to work improperly.
Use and store the clock radio onl y in normal temperature environments. Temperature extrem es can shorten t he life of electronic devices and distort or melt plastic parts.
Keep the clock radio away from dust and dirt, which can cause premature wear of parts.
Wipe the clock radio with a damp cloth occasionally to keep it looking
CLEANER
new. Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the clock radio.
Modifying or tampering with the clock radio’s internal components can cause a malfunction and might invalidate your clock radio’s warranty and void your FCC authorization to use it. If your clock radio is not performing as it should, take it to your local
Radio Shack store for assistance.
9
FCC INFORMATION
Your radio might cause TV or radio interference even when it is operating
properly. To determine whether your
radio is causing the interference, turn
off your radio. If the interference goes
away, your radio is causing the interference. Try to eliminate the interference by:
• Moving your radio away from the
TV or other radio
• Contacting your local Radio
Shack store for help
If you cannot eliminate the interference, the FCC requires that you stop
using the radio.
10
SPECIFICATIONS
Bands
AM.................................................................................................530-1710 kHz
FM................... ................ .......... ................ ................. ......... .............88-108 MHz
Intermediate Frequency
AM............ ......... ................. ................ .......... ................ ................. .........455 kHz
FM................... ................ .......... ................ ................. ......... .................10.7 MHz
Power Output............................................................................. 320 m W (maximum )
Speaker ...........................................3 Inch (5.7 cm) Ferrite, Dynamic-Type, 8 ohms
Power Requirements.............................................12 V AC, 60 Hz, 6 Watts, DC 9 V
1
Dimensions (HWD) .................................................................. 2
Weight .........................................................................................................1 lb. 9 oz
Specifications are typical; individual units m ight vary. Specifications are subj ect to
change and improvement without notice.
/4 × 10 × 51/2 Inches
(57 × 254 × 140 mm)
(0.71 kg)
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RADIO SHACK LIMITED WARRANTY
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This product is warranted against defects for 90 days from date of purchase from Radio Shack company-owned stores and authorized Radio
Shack franchisees and dealers. Within this period, we will repair it without char
slip
not cover transportation costs. Nor does it cover a product subjected to
misuse or accidenta l dama
EXCEPT AS PROVIDED HEREIN, RADIO SHACK MAKES NO
EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN LIMITED
WARRANTIES CONTAINED HEREIN. Some states do not permit limitation or exclusion of implied warranties; therefore, the aforesaid limitation(s) or exclusion(s) may not apply to t he purchaser .
This warranty gives you specifi c legal rights and you ma y also ha ve other rights which vary
from state to state.
e for parts and labor. Simply
as proof of purchase date to any Radio Shack store. Warranty does
e.
We Service W hat We Sell
bring your Radio Shack sales
9/94
RADIO SHACK
A Division of Tan dy Co rpo ration
Fort Worth, Texas 76102
9A5 Printed in Hong Kong
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