Citizen Quartz Jnoxxx User Manual

CITIZEN QUARTZ

Racing Chrono

Model No. JNOXXX

Caliber No. C310

• Instruction Manual

CTZ-B6770

Thank you for purchasing a CITIZEN QUARTZ
Watch. To ensure correct use, please read these
instructions carefully. Please confirm that the
CITIZEN International Guarantee Card is included
for your possible claim.

A. Five Features

1. Lap time, lap number are displayed.

2. By setting the distance of one lap around a race
circuit, the speed is displayed.

3. When the racing ends, the race’s

• Best lap time, the lap number, and speed

• Average lap time and average speed

• Total time and total laps can be displayed.

4. There is a “hand retractor function” that prevents
the analog hand from covering parts of the display.

5. The timer can be selected from “analog (hand)
display” or “digital display” (You can use both at
the same time).

B. Name of Parts

C. Switching the Mode

This watch has the following 4 main functions
(modes) can be switched by pressing button

嘷M.

<Note>
When changing modes, make sure you have
pressed button

嘷M in properly to change modes.

D. Adjusting the Time and Calendar

1. Set the mode to (Time/Calendar) mode by
pressing button

嘷M.

2. Pull out button

嘷M.

• The second hand will return to the “0” position.

2. • The day of the week will disappear and the

seconds will flash in the digital display.

2. • “SET” will appear in the digital display.

* At the time, if the second hand does not return to

the “0” position, please refer “Hands standard
position” on page 17, and perform operation.

3. Press button

嘷A to select the flashing digit you

wish to adjust,

4. Adjust the flashing digit of the time with button

嘷M.

5. Push back button 嘷M to the normal position after
completing the time adjustment.

5. • All hands will move to the adjusted time

automatically.

5. • The digital display will return to the normal display.

The analogue time and the
digital time in this watch are
synchronised. If you adjust
the digital time, the analogue
time is adjusted automatically.

E. Alarm Function

1. Press button

嘷M to set the digital mode mark to

(ALM) mode.

2. Pull out button

嘷M. The hour digit in the digital

display will flash for the alarm set time ‘Set’ will
appear in the digital display.

3. Press button

嘷A to select the digit (hour/minute).

4. Press button

嘷C to set the alarm time.

5. Push back button

嘷M to the normal position after

complete adjustment.

✽ Press any button to stop the alarm sound.
<Note>

The alarm sound may sometimes start and stop.
This is because when the watch hands move, the
alarm sound is momentarily adjusted.

Switching the alarm ‘ON/
OFF’ with button

嘷C

.
The alarm time and normal
time (12/24 hour system)
are synchronised. When
A/P is displayed, make sure AM/PM are set correctly.

This is a combination watch which can conveniently
display data while watching races (car, bike, etc.)

Setting the alarm time

F.Timer Function

This timer can be set to the maximum of 60 minutes
in minute.
For the timer, by pressing button

嘷C you can select

between “analogue display” or “digital display”. (You
can not use both at the same time).

Both the analogue and digital settings are the same
way.

1. Press button

嘷M to set the mode mark to (TMR)

mode.

2. Pull out button

嘷M.

2. • The timer setting time will flash in the digital

display.

2. • “SET” will appear in the digital display.

3. Press button

嘷C to set the time.

• When using the analogue hands for the timer,
the function hand (a small hand on the 12 o’clock
direction) will move
according to the timer
setting time.

4. Push back the button

嘷M

to the normal position.

1. Start/Stop

• By pressing button

嘷A, the timer will start and stop.

2. Reset

• When the timer is stop, press button

嘷C to return

the timer to the set time.

3. Time up

• Alarm will ring for 5 seconds

• While the alarm sounds, press any button
(

嘷M, 嘷A , 嘷B , 嘷C ) to stop.

4. Timer restart
When the timer is timing, press button

嘷C to return

the timer to set time and the timer will restart
timing again.

G. Chronograph Function 1

This chronograph can measure up to 99 hours, 59
minutes, 59 seconds, 9. After that it will stop at 0
hours, 00 minutes, 00 seconds, 000. Measurement
time will display in the digital display. The analogue
hands will also show “Seconds” “1/10 seconds”
hand will display only when the chronograph has
been stopped. (While the chronograph is stopped
or while checking the lap time) 1/10 second hand
will stop at the 0 second position after 1 minute of
timing. After that, it will point to the correct 1/10
second time when the chronograph has stopped.
The chronograph has stopped. The chronograph
will measurement in 1/1000 sec. units up till 60
minutes, and in 1/10 sec. units from 60 minutes on.

Press button

嘷M to set the digital mode mark to the

(CHR) mode.

1. Press button

嘷A to start timing.

• The chronograph’s number of timing display
changes from “0” to “1”.

2. While timing press button

嘷A to stop.

“BEST LAP” etc. will appear in the digital display,
however it is not required when operating the
standard measurement.

3. Press button

嘷A again to restart the chronograph

from “0 hour, 00 minute, 00.000 sec”.

• The chronograph number of timing display
changes from “1” to “2”.

4. In that way with button

嘷A it is possible to repeat

the start/stop operation.

4. • The chronograph display gains “1” every time,

until it reaches a maximum of “99”. After that it
will repeat from “0”.

4. • The chronograph starts from “0 hour, 00 minute,

00.000 sec” every time it is started.

5. Press button

嘷C to reset after measurement.

The time and the number of timing will reset to “0”.
<Note>
When the alarm sounds, the hands may stop, but
they will revert to the correct timing after the alarm
sounds stop. The digital display continues timing
correctly.

H. Chronograph Function 2 (Racing Chronograph)

When using the racing chronograph, in order to
calculate the km per hour of the car, the distance
of one lap around the race circuit must be input.
So before you start timing, set the lap distance.

1. Reset the chronograph and then depressing

button

嘷A for 2 seconds or more.

• The chronograph will initially start, however
after 2 seconds the display will switch to the
lap distance setting display.

2. Distance setting

• Setting range is “00.000” km – “99.999” km
(1 metre) units.

• Select the digit you wish to to set with button

嘷A, set the distance with button 嘷C .

• Press button

嘷A to select “0.001” km digit then

by pressing button

嘷A again, you can return

from distance setting to the reset condition.

Timer setting

Using the Timer

Standard measurement

Setting the distance of one lap around
the race circuit