Casio TQ-451/551 User Manual

Casio Home Theater Systems

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USER’S GUIDE TQ-451/551

1

SNOOZE (/LIGHT)

ON

OFF

RESET

A sticker is affixed to the glass of this clock when you purchase it. Be sure to remove the sticker before using the

clock.

Depending on the clock model, the configuration of your clock may differ somewhat from that shown in the

illustration.

This product has a sweep second hand.

(TQ-551) Pressing

SNOOZE/LIGHT

illuminates the face of the clock for about three seconds for easy reading of

the time in the dark.

(TQ-551) This product has a luminous resin face that accumulates light for easier reading.

(TQ-451) This product uses luminous paint for face markings and on its hands.

Next alarm dial

Alarm ON/OFF switch

Minutes Hand

Alarm Hand

Hour Hand

Seconds Hand

LIGHT

LUMINOUS RESIN

LUMINOUS PAINT

TQ-451

X

X

O

TQ-551

O

O

X

ABOUT THE LUMINOUS PAINT

When the face of the timepiece is exposed to fluorescent light, the luminous paint stores the light, which it then
emits to glow in the dark for easy reading.

The luminous paint used by this product does not use any radioactive material. It is personally and ecologically
safe.

The amount of time before the glow emitted from the luminous paint starts to weaken is about five hours. This
time, however, depends on the brightness and angle of the light to which it was originally exposed.

Since ultraviolet light charges the luminous paint, you should use this timepiece in a room illuminated by
fluorescent light.

TO SET THE TIME

Rotate the Time setting dial to change the time setting.

Be sure to always press

RESET

with a thin object after loading batteries.

USING THE ALARM

This clock has two alarms. The 1st Alarm is the alarm that sounds when the current time reaches the alarm time
you set. The Next Alarm sounds after passage of the time setting of the

NEXT ALARM

dial, starting from the point

that the 1st alarm begins to sound. The Next Alarm also has a snooze feature.
The alarm on/off setting affects both the 1st Alarm and the Next Alarm. You cannot turn the 1st Alarm and Next
Alarm on and off individually.
The Next Alarm sound is relatively louder than the 1st Alarm sound.

To set the alarm

1. Rotate the Alarm setting dial in the direction indicated by the arrow marked on clock to move the alarm hand to

the 1st Alarm time setting you want.

2. Rotate the

NEXT ALARM

dial from 1st Alarm to the Next Alarm setting you want to use.

You can set the Next Alarm to any time from 5 to 60 minutes, in 5-minute steps.

3. Set the Alarm ON/OFF switch to

ON

.

If the Alarm ON/OFF switch is already set to

ON

, always be sure to change its setting to

OFF

and then back to

ON

again after making alarm time setting changes.

Note that this clock does not distinguish between AM and PM times. If you set an alarm to wake up to in the

morning, the alarm will sound again at the same time in the evening if you leave the Alarm ON/OFF switch in the

ON

position.

To use the alarm

The 1st Alarm starts to sound when the current time reaches the time indicated by the alarm hand. The 1st Alarm
stops sounding when you press

SNOOZE (/LIGHT)

or after it has sounded for about one minute. After the amount

of time set by the Next Alarm Dial passes, the Next Alarm starts to sound. Pressing

SNOOZE (/LIGHT)

stops the

Next Alarm sound for about five minutes, after which it starts to sound again. In all, the Next Alarm will sound seven
times.
If you do not press

SNOOZE (/LIGHT)

after the Next Alarm starts to sound, it will stop automatically after about one

minute.
To deactivate the snooze feature so the alarm will not sound again, change the Alarm ON/OFF switch setting to

OFF

.

REPLACING THE BATTERY

Low battery power is indicated when timekeeping slows or stops completely. Should either of these symptoms
occur, replace the battery immediately. Do not leave a low or dead battery in the clock.
1. Pressing down at the point marked

on the battery compartment cover, slide the cover to remove it.

2. Remove the old battery.
3. Load a new battery. Make sure that its positive (+) and negative (–) ends are facing correctly. If you load the

battery incorrectly, it can burst and damage the clock.

4. Replace the battery compartment cover.

Battery precautions

Keep batteries out of the reach of small children. If a battery is accidentally swallowed, contact your physician
immediately.

Be sure to load the battery with its positive (+) and negative (–) ends facing correctly.

Never charge the battery that comes with the clock.

Should a battery ever leak while in the clock, wipe out the fluid with a cloth, taking care not to let any get onto
your skin.

Replace the battery at least once a year, even if the current battery is working normally.

The battery that comes with the clock loses some power during transport and storage.

Time setting dial

Battery compartment

Alarm setting dial

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