Radio Shack Chronomatic-278 User Manual

Cat. No. 12-1586A

OWNER’S MANUAL

Please read before using this equipment.

Chronomatic-278

AM/FM LED Alarm Clock Radio

FEATURES

g

y

g

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