Citizen H486 User manual

137
Repairs
All repairs performed on this watch, with the exception of repair of the band, are to be
performed at CITIZEN. This is because special technologies and equipment are
required to perform repairs, inspections and adjustments. Please make requests for
repairs to Citizen Service Center when having your watch repaired.
English

138 139
WWThis radio wave watch receives standard time radio
signals broadcast in the People’s Republic of China in
order to adjust the time and date.WW
• Only standard time radio signals broadcast from in the People’s Republic of China
(BPC) are received.
• The radio wave watch has no effect on the human body or medical equipment.
WWFully charge your watch before use by exposing it to
sufficient light.WW
The second hand will move at 2-second intervals when the watch is insufficiently
charged. Charge your watch as indicated in “Guide to Charging Time” on page 180.
• Charge the watch in direct sunlight for a whole day once a month. NO: Reception status NO
Second hand
Hour hand
Crown for turning
the outer scale
Button (A)
Crown
Minute hand
Button (B)
H, M, L: Reception level/
reception status
RX: Reception standby
• This watch indicates the reception level and reception status with the short side of the second
hand.
• The illustrations shown in this manual may differ from the actual watch you have purchased.

140 141
1. Your Watch................................................................................................. 142
2. Operating the Crown ................................................................................. 143
3. Before Use ................................................................................................... 144
A. Check the Movement of the Second Hand .......................................... 144
B. Check the Reference Position ............................................................... 146
4 . Functions List ............................................................................................. 148
Radio Signal Reception
5. Reception..................................................................................................... 150
6. Poor Reception Areas................................................................................. 153
7. Position of the Second Hand During Reception ...................................... 154
8. Confirming Reception Status .................................................................... 155
9. Reception Area Standards......................................................................... 156
Manually Setting the Time and the Date
10. Setting the Time.......................................................................................... 158
11. Setting the Calendar................................................................................... 160
Table of Contents Correcting the Time Difference............................................................................ 164
12. Adjusting the Reference Position.............................................................. 166
Troubleshooting ..................................................................................................... 168
Solar Power
13. Solar Power Function................................................................................. 172
14. Characteristics of the Solar Powered Watch ........................................... 174
A. Power Saving Function ......................................................................... 176
B. Insufficient Charge Warning Function ............................................... 178
C. Overcharging Prevention Function ..................................................... 179
D. Guide to Charging Time ....................................................................... 180
E. Handling Your Solar Powered Watch ................................................. 182
15. Using the Slide Rule Bezel ......................................................................... 184
16. Precautions.................................................................................................. 196
17. Specifications .............................................................................................. 202

142 143
1. Your Watch
<Radio Signal Reception Function>
This watch automatically receives standard time radio signals broadcast from radio signal
transmitters in the People’s Republic of China (BPC), which contain information that
automatically adjusts the time and the date of your watch. (P. 150)
iRegular automatic reception: The watch will automatically receive the radio signals at 2
a.m. every day and adjust the time and date accordingly. If a signal cannot be received at
2 a.m., it will try again automatically at 4 a.m.
iOn demand reception function: The radio signals can be received at the desired time to
adjust the time and date. * Not possible when the radio wave is interrupted.
<Eco-Drive Function>
This solar powered Eco-Drive watch is powered by photo energy converted into electrical
energy.
iPower saving function: If the watch face is not exposed to light for one week or longer,
the hands are stopped in order to restrict the power consumption of the watch. (P. 176)
<Overseas Use>
iTime difference correction function: A simple method is available for changing to the
local time if you are going to an area in a different time zone. (P . 164)
2. Operating the Crown
There are two models available for the crown: normal and screw lock.
<Operating the Screw Lock Crown>
• When the screw lock is
released, the crown pops
out a little and stops in
the normal position.
After finishing the
operation, lock the
crown again.
<Moving the Hands Continuously>
With the crown in position 1 or position 2, quickly and
continuously turn the crown clockwise or
counterclockwise by two clicks or more to make a
hand (hour, minute or second hand) move
continuously.
To stop the continuous movement of the hands, turn
the crown clockwise or counterclockwise by one click.
* Your fingertips will feel the crown click slightly.
• Turn the crown
counterclockwise.
Using the side of your finger, quickly
turn the crown by two or more clicks.
Turn
counterclockwise.

144 145
Check the
movement of
the second
hand.
Charge the watch
sufficiently by placing it in
direct sunlight as indicated
in “Guide to Charging
Time” on page 180.
The second hand is
moving at 2-second
intervals or is
stopped.
Check the
reception
status by
pressing button
(A) once which
is located at
the 4:00
position.
The second hand
shows H, M, L as
a reception
status.
The second hand
shows NO as a
reception status.
Your watch is
correctly receiving
the standard time
radio signal.
It is ready to use.
Perform on demand
reception as
indicated in “On
Demand Reception”
on page 151.
The second hand is
moving at 1-second
intervals.
3. Before Use
A. Check the Movement of the Second Hand
NO: Signal
reception failed
RX: Reception standby
Reception
level/reception
status
H : High
M : Middle
L : Low
Button (A)

147146
B. Check the Reference Position
Before using the watch, check that the hands are aligned with “0”, similar to when
setting weighing scales
iThe reference position may become misaligned by environmental factors such as
magnetism, static electricity or an external impact. Even if radio signals are received, if
the watch hands are not aligned to the correct reference position, it will not be possible to
indicate the correct time. Check that the hands are properly aligned with “0”.
Examples of magnetic products that can affect the watch
• Health products (for example, medical necklaces and waist bands that have magnetic
fields)
• Refrigerators (magnetic part of the door)
• Electromagnetic cookers
• Bags (with magnet fasteners)
• Mobile phones (speaker part)
Keep the watch away from items similar to those above.
The reason why analog quartz watches are affected by strong magnetic fields:
The step motor operates through a magnet, so when it is exposed to a strong external
magnetic field, the motor operation is affected and the correct time is no longer
displayed.
[Checking the Reference Position]
(1) With the crown in the normal position, press and hold button (B) for more than 5
seconds, and release when the second hand starts to move.
(2) All the hands and the date will move rapidly, stopping at the reference position.
* This could take up to a maximum of about 7 minutes.
(3) If the reference position is correct, the check is complete.
If an incorrect position is indicated, the reference position must be adjusted.
(4) After completing the check, press button (B) once to return to the original time.
Refer to “Adjusting the Reference Position” on page 166.
Button (B)
Correct reference position indication
Time: 00:00:00
Date: Between 31 and 1

148 149
Hand Movement
The second hand will stop in the RX position and then move to the H, M or L level. If the reception level is
not shown, normal hand movement will return without a signal being received.
The second hand will stop at H, M, L or NO.
The second hand will stop at the 12:00 position. (If a time difference setting has been made, it will stop at the
position appropriate for the time difference.)
Turn the crown clockwise to move ahead by 1 hour and turn it counterclockwise to move back by 1 hour.
Second hand: Turn the crown clockwise to rotate the second hand clockwise once and move the minute hand
ahead by 1 minute.
Turn the crown counterclockwise to rotate the second hand counterclockwise once and move
the minute hand back by 1 minute.
* Turn the crown quickly to advance rapidly.
Hour hand, date: Turn the crown clockwise to move the hour hand ahead by 1 hour.
Turn the crown counterclockwise to rotate the hour hand counterclockwise and back by 1 hour.
* Turn the crown quickly to advance rapidly.
* The hour hand and the date are linked together. Move the hour hand to change the date.
The second hand will stop at the “Elapsed years after the most recent leap year” position recorded in the watch
memory. Turn the crown clockwise to move the second hand ahead by 1 step and turn it counterclockwise to
move it back.
* Turn the crown quickly to advance rapidly.
Function
On Demand Reception
(P. 151)
Confirming Reception
Status (P. 155)
Correcting the Time
Difference (P. 164)
• Manually Setting the
Time (P. 158)
• Manually Setting the
Calendar (P. 160)
(Elapsed years after the
most recent leap year)
Button or Crown Operation
Press and hold button (A) for more
than two seconds and release when
the second hand stops in the RX
position.
Press button (A) once.
Press button (B) once and turn the
crown.
Pull out the crown to position 2.
Press button (A) once.
* The adjustment changes between
the minute hand and hour hand
each time button (A) is pressed.
Pull out the crown to position 1.
4. Functions List
Crown
Button (B)
Button (A)

150 151
5. Reception
Three types of radio signal reception are possible: regular automatic reception, on
demand reception and automatic reception recovery.
Regular Automatic Reception
(To receive signals automatically)
• It is not necessary to operate buttons during
regular automatic reception.
<Receiving the radio signals>
1. Remove the watch from your wrist and place on a
stable surface near a window, with the 9:00 position
(antenna for receiving the radio signals side) facing
in the direction of the radio signal transmitter from
which the radio signal can be easily received.
2. The watch will receive the radio signals at 2 a.m.
every day. If a signal cannot be received at 2 a.m., it
will try again automatically at 4 a.m. and the time
will be adjusted.
On demand reception (Manual reception)
• Signals can be received at any time in this mode.
* Not possible when the radio wave is interrupted.
Use this function when regular automatic reception is impossible due to changes in the
reception environment.
<Receiving the Radio Signals>
• Step
1. Find the direction of the radio signal transmitter.
2. Remove the watch from your wrist and place on a stable surface near a window where the
radio signal can be easily received.
3. Point the 9:00 position of the watch in the direction of the radio signal transmitter, and
press and hold button (A) for more than 2 seconds. Release when it stops at RX.
4. The second hand will then move to H, M or L.
An antenna for receiving the radio
signals is located inside the watch (on
the 9:00 position).
Radio Signal Reception
[Reception standby] [Receiving signal] [Reception completed]
RX
(Reception
standby) The second hand returns to
1-second interval movement.
Reception
level (H, M, L)

152 153
5. Do not move the watch during reception.
6. When the signal has been properly received, the second hand will automatically
move from H, M or L to the time that was received, all the hands will be adjusted,
and the second hand will return to 1-second interval movement.
• The reception level may be affected by the surroundings in which the watch is being
used. While referring to reception levels H, M and L, keep changing the watch
direction or location and try to receive the signals.
Automatic Reception Recovery
iAfter the watch has stopped due to an insufficient charging, charge the watch in
sunlight sufficiently. When the watch is recharged sufficiently, it will automatically
receive the radio signal once.
Regularly charge your watch so that it does not become
insufficiently charged.
To confirm, refer to “Confirming Reception Status” on page 155.
• When the watch is receiving the radio wave signal, all of the hands
will stop. To check the time, hold button (A) for 2 seconds to cancel
radio wave reception. The hands will then return to the current time.
6. Poor Reception Areas
It may be difficult to properly receive the radio signals under certain environmental
conditions or in areas susceptible to radio noise.
jExtremely hot or cold
locations
jNear cellular
phones in use
jInside vehicles,
including cars, trains
and aero planes
jNear TVs, refrigerators,
computers, fax machines and
other home electronic devices
or electrical appliances
jInside reinforced concrete
buildings, or underground
jNear high-tension electrical
lines, railway overhead wires
or communication facilities

154 155
8. Confirming Reception Status
iThe reception status can be confirmed.
Step 1: Press button (A) once to confirm the reception status. The second hand will move to
H, M, L or NO.
Step 2: The reception status will be indicated for 10 seconds before the watch automatically
returns to normal hand movement. You can also press button (A) again while the
reception status is indicated to return to 1-second interval movement.
• If NO is indicated, find a location or direction where the reception is better and perform
“On Demand Reception” again.
7. Position of the Second Hand During Reception
[Reception standby] [Receiving signal] [Reception completed]
jSecond hand moves to
RX and stops.
jThe second hand will move
from RX to reception level
H, M or L and will begin
receiving signals.
j When reception is successful, the
second hand will return to 1-second
interval movement and the positions
of the other hands will be
automatically adjusted.
<Time Necessary for Reception>
Reception can take from between about 2 minutes to a maximum of 15 minutes, depending on factors
such as the weather or noise. If the signal reception fails, the watch may return immediately to the
normal indication.
NOTE:
If the signal is blocked while it is being received due to changes in the environment or other factors,
the second hand may rotate once and show the reception level again. Do not move the watch until the
second hand has returned to moving at 1-second intervals.
* H, M and L only indicate the reception level, and do not affect the
performance.
<The time display may shift slightly depending on the reception environment and internal watch
processing even if radio waves are properly received.>
Reception level
H
M
L
NO
Reception status
Received at a strong reception level
Received at a quite strong reception level
Received at a weak reception level
Signal reception failed

156 157
Beijing
Shanghai
CHINA
TAIWAN
Hong Kong
Taipei
9. Reception Area Standards
The map shows a standard of the reception area. However, note that the signal condition
could change due to factors including the weather (such as lightning) and changes in the
season or sunrise/sunset time.
The reception area on the map should be used only as a standard, and it may be difficult
to receive the radio signal even within the areas indicated on the map.
Location of the radio signal transmitter
Shanggiu, Henan
Standard time radio signal
BPC
The standard time radio wave used by this radio controlled watch is broadcast almost
continuously, but may be interrupted occasionally due to special circumstances at the
radio wave transmitter. Radio waves cannot be received during this period.
Even if reception of the standard time radio signal has failed, the watch will continue to
be accurate to within ±15 seconds per month.

158 159
10. Setting the Time
When using the watch in an environment where radio signals cannot be received, manually
adjust the time and the date.
•After pulling out the crown to position 2, press button (A) to repeatedly change between
[Second Hand/Minute Hand] adjustment and [Hour Hand/Date] adjustment.
Step 1: Pull out the crown to position 2.
•The second hand will stop at the 0 second position.
Step 2: Turn the crown to set the minute hand.
(1) Turn clockwise by 1 click to rotate the second
hand clockwise once and to move the minute hand
ahead by 1 minute.
(2) Turn counterclockwise by 1 click to rotate the
second hand counterclockwise once and to move
the minute hand back by 1 minute.
•Continuously turn the crown by 2 or more clicks to
make the second and minute hands move continuously.
Turn the crown by one click clockwise or counterclockwise to stop the continuous
movement of the hands.
Step 3: Press button (A) once to enter the hour hand/date
adjustment mode.
(1) Rotate the crown clockwise by one click to
move the hour hand ahead by 1 hour.
(2) Rotate the crown counterclockwise by one
click to move the hour hand back by 1 hour.
•Turn the crown by two or more clicks to make
the hour hand move continuously.
(3) The hour hand and the date are linked together.
Move the hour hand continuously to change the
date.
NOTE:
The date changes at midnight. Pay close attention to a.m.
and p.m. when setting the date.
Step 4: Set the time by using a time signal, and then press the crown back into its normal
position.
Crown in
position 2
Button (A)
Manually Setting the Time and the Date

11. Setting the Calendar
<Procedure for Month and Year
(Elapsed Years after the Most
Recent Leap Year) Adjustment>
Step 1: Pull out the crown to position 1.
• The watch will enter the calendar
adjustment mode and the second hand will
stop at the month and elapsed year
positions recorded in the watch memory.
Step 2: Use the quick reference for the elapsed years after the most recent leap year to
confirm the number of elapsed years, and turn the crown clockwise by one click
to align the second hand with the month and elapsed years. Turn the crown
counterclockwise by one click to move the second hand counterclockwise.
• Turn the crown by two or more clicks to make the second hand move
continuously. Turn the crown by one click clockwise or counterclockwise to
stop the continuous movement of the hands.
160 161
* Reading the Month Shown by the
Second Hand
Second hand between 1:00 and 2:00:
January
Second hand between 2:00 and 3:00:
February
Second hand between 12:00 and 1:00:
December
<Reading the Month and Year (Elapsed Years after the Most
Recent Leap Year) with the Second Hand>
Leapyear
3
rd
year
Leapyear
1
st
year
2
nd
year
3
rd
year
1styear
2ndyear
Leapyear
1
st
year
2
nd
year
3rdyear
Leapyear
1
st
year
2ndyear
3rdyear
December
January
February
April
zone
Crown in
position 1

162 163
Quick reference for the elapsed years after the most recent leap year
Year
2004
2005
2006
2007
Elapsed years
Leap year
1st year
2nd year
3rd year
Year
2008
2009
2010
2011
Elapsed years
Leap year
1st year
2nd year
3rd year
Year
2012
2013
2014
2015
Elapsed years
Leap year
1st year
2nd year
3rd year
* Reading the Elapsed Years Shown by the Second Hand
Leap year: The second hand points to the 1st position in each month zone
1st year after the most recent leap year: The second hand points to the 1st position in
each month zone
2nd year after the most recent leap year: The second hand points to the 2nd position in
each month zone
3rd year after the most recent leap year: The second hand points to the 3rd position in
each month zone
Example:
• April of the 3rd year after the most recent leap year
Read the elapsed years after the most recent leap year from the quick reference for the
elapsed years.
• Align the second hand with the 23 seconds position (in the zone between 4:00 and
5:00).
Step 3: Press the crown back into its normal position.
Leapyear
1styear
2ndyear
3rdyear
April

The watch can be adjusted to the local time when going to an area in a different time zone,
by using the second hand to set the time difference in units of 1 hour.
Step 1: Press button (B) once and the second hand
will stop in the 12:00 position. The second
hand 12:00 position indicates a time
difference of ±0 hours.
* If a time difference setting has been made, it
will stop at the position appropriate for the time
difference.
Step 2: Do not pull out the crown. Turn the crown
clockwise by 1 click to set a time
difference of +1 hour with 1 step of the
second hand. Turn the crown
counterclockwise to set a time difference
of -1 hour with 1 step of the second hand.
• The 12:00 position of the second hand is
Chinese time. A time difference in a
range of ±27 hours relative to Chinese
time can be set.
164 165
Step 3: Press button (B) once after setting the time difference to return to 1-second interval
movement. Alternatively, do not perform any operations for 10 seconds and the
watch will indicate the time difference setting time and then return to 1-second
interval movement.
Button (B)
Example: When going to an area with a time
difference of +1 hour relative to China, align
the second hand with the 1 second position.
- 5
±0
- 10
- 27
+5
+10
+27
Correcting the Time Difference

Step 3: Press button (A) once and turn the crown to set the minute and second hands.
(1) Turn the crown clockwise by 1 click to rapidly move the second hand ahead by 1
minute and turn it counterclockwise to move it back.
(2) Continuously turn the crown by 2 or more clicks to rapidly rotate the second
hand. Since the minute hand and the second hand are linked together, the minute
hand will move continuously.
Step 4: After adjusting the reference position, return the crown to the normal position, and
press button (B) once to make the hands and the date rapidly return to the current
time.
• This completes the reference position adjustment, but if the watch does not return to the
current time, perform “On Demand Reception” on page 151.
166 167
12. Adjusting the Reference Position
<Adjusting the Reference Position for the Date and Hands>
• After pulling out the crown to position 2, press button (A) to repeatedly change between
[Second Hand/Minute Hand] adjustment and [Hour Hand/Date] adjustment.
Step 1: Press and hold button (B) for more than 5 seconds, release when the second hand
starts to move rapidly and immediately pull out the crown to position 2.
Step 2: Align the date between 31 and 1.
(1) Continuously turn the crown by 2 or more clicks. Since the hour hand and the
date are linked together, the date will change when the hour hand is moved
continuously.
(2) When 31 and 1 are visible in the frame on the
watch face, move the crown clockwise or
counterclockwise to make the hour hand stop
in the 0:00 position.
Button (B)
Button (A)

169
Problem Check Remedy
Radio signals
cannot be
received.
• Are there objects nearby that
could block radio signals or
generate noise?
Are you attempting to receive
the radio signal in a location
far from a window?
• Avoid objects that block radio
signals or generate noise. Try to
receive radio signals by pointing the
9:00 position of the watch in the
direction of the radio signal
transmitter. Find a location such as
window that is conducive to radio
signal reception and change the
watch location, direction and angle.
(P. 153)
168
<Radio Signal Reception Function>
Consult the following chart:
Problem Check Remedy
Radio signals
cannot be
received.
• Radio waves may be
interrupted occasionally due to
special circumstances at the
radio wave transmitter.
• Are you moving the watch
while receiving a signal and
the second hand is showing
RX, H, M or L?
• Try to receive the wave again after a
few hours.
• Do not move the watch until the
signal has been properly received
(until normal hand movement
returns).
Troubleshooting

170 171
Problem Check Remedy
Radio signals
cannot be
received.
Does not receive
radio signals.
• Is the watch moving at 2-
second intervals?
• Does the second hand move to
the reception standby (RX)
position?
• The watch changes to 2-second
interval movement if the battery
voltage is low. At this time, neither
on demand reception nor regular
automatic reception can be
performed. Charge the watch
sufficiently by placing it in sunlight.
• Press and hold button (A) until the
second hand indicates the reception
standby (RX) position, and then
release.
Problem Check Remedy
The watch can
receive the radio
signal, but it
does not show
the correct time.
• Is the reference position set
correctly?
Check the Reference Position.
(P. 146)
• Even if radio signals are received, if
the watch hands are not aligned to
the correct reference position, it will
not be possible to indicate the correct
time.
If the reference position is not
correctly set, adjust it as indicated in
“Adjusting the Reference Position”
on page 166.

172 173
13. Solar Power Function
This watch uses a secondary battery to store electrical energy.
When the watch is fully charged, it will maintain its accuracy for about 6 months.
<Ensuring Best Operation of the Watch>
Always store the watch in a bright location for best results.
jPlacing the watch near a window where its face can
receive sunlight or near another source of light when
you are not wearing it will ensure that the watch is
regularly charged, allowing it to maintain its
accuracy.
jCharge watch by exposing the watch face to direct
sunlight or to a fluorescent lamp.
jWearing clothes with long sleeves makes it difficult
for the watch to get the necessary light, resulting in
insufficient charging.
It is recommended that the watch is charged in direct
sunlight once a month.
NOTE:
Do not charge on surfaces that can easily become hot,
such as a car dashboard.
Solar power

174 175
14. Characteristics of the Solar Powered Watch
iWhen the watch is insufficiently charged, the indication will be changed as follows:
* 1. The watch stopped due to insufficient charging.
• It takes at least 30 minutes to recharge sufficiently to perform automatic reception recovery, even
if the watch is being exposed to light.
After recovery, refer to “Guide to Charging Time” on page 180 and sufficiently charge the watch.
* 2. The watch failed to perform automatic reception recovery
• The time is incorrect even if the second hand moves at 1-second intervals, so after fully charging
the watch, set the time manually or with on demand reception.
[Normal Indication] [Insufficient Charge Warning] [Automatic Reception Recovery]
The watch has been
insufficiently charged because
the watch face, which
contains the solar cell, has
not received sufficient light.
The second hand will begin a
2-second interval movement. When a radio signal has been
successfully received *2
The watch
will stop due
to an
insufficient
charging.
Sufficiently charge by
exposing the watch
face, which contains the
solar cell to light. *1
2-second interval
movement When the watch is recharged
sufficiently, it will receive the radio
signal automatically once.
The insufficient charge
warning (a 2-second
interval movement)
continues for more
than 4 days