Seiko Astron 7X52 Installation guide
7X52 GPS SOLAR
基本操作マニュアル
Basic Manual
CSB7X52-1208
PrintedinJapan
1READ FIRST
１．READ FIRST
２．BEFORE USE
３．BASIC OPERATION
４．DETAILED INFORMATION
５．IN CASE OF AN UNUSUAL MOVEMENT OF THE SECOND HAND
６．TROUBLESHOOTING
7．SPECIFICATIONS
CONTENTS
1
1READ FIRST
This is a GPS* solar watch.
This watch has the following features.
Features
This watch can be set to the
precise local time by just one
button operation anywhere in
the world.
This watch operates by solar
charging.
This watch automatically
adjusts the time in accordance
with action patterns during
use.
Expose the dial to light to
charge the watch.
Once fully charged, the watch
runs for approximately six
months.
When the energy stored in the
watch runs out completely, it
takes time to fully charge the
watch, so please keep in mind
to charge the watch regularly.
→ How to charge the watch P.37
→ Standard charging time P.37
When the watch has sensed
sufficient brightness under
an open sky, it automatically
receives GPS signals from GPS
satellites. This function enables
the watch to automatically
adjust the time precisely even
while you are using the watch.
→
Automatic time adjustment
P.46
＊This watch is unable to receive
GPS signals when the energy
stored in the watch is low.
→
Check the Charging Status
P.36
→ How to adjust the time P.40
7th
6
th
2
1READ FIRST
The following functions are included
The watch displays the precise time of the time
zone that is set by operation of “manual time
adjustment.”
→ How to manually adjust the time P.45
→ Check the time zone setting P.40
To set only the timeWhen the region or time zone where the watch
is used is changed
Adjust the time zone.
The watch displays the precise local time.
→ Time zone adjustment P.39
LosAngeles
7:00pmon6th London
1:00pmon7th
3
2BEFORE USE
Names of the parts
Crown
（Screw lock type）
Button B
Sub-dial
Indicator hand
Main-Dial
Date
Second
hand
Button C
Button A
Hour
hand
Minute
hand
Continued on the following page
4
2BEFORE USE
Indicator hand display and reception result display
Display of charging status
Display of in-ight mode
( )
Display of Daylight Saving Time (DST)
【 Checking the
reception result】
Display of
reception result
Display of receiving process
Continued on the following page
5
2BEFORE USE
Check the charging status
The indicator hand position shows whether this watch is able or unable to receive GPS signals.
In addition, for the low charging state, the movement of the second hand shows the energy
depletion state in further detail.
Continued on the following page
6
2BEFORE USE
How to charge the watch
Expose the dial to light to charge the watch.
Standard
Charging Time
For an approximate time
required to charge the watch,
refer to the table at the right.
About charging
To ensure optimal
performance
of the watch,
make sure that
the watch is
kept suciently
charged at all
time.
Under the following situations, the energy of the watch is likely to
be depleted, resulting in stoppage of the watch.
・ The watch is concealed under a sleeve.
・ The watch is used or stored under conditions where it cannot be
exposed to light for a long time.
Continued on the following page
7
2BEFORE USE
Dicult to receive
Cannot receive
Easy to receive
There are places where GPS signals can be easily received and places where GPS signals
cannot be received.
Place where GPS signals can be easily received/Place where GPS signals cannot be received
8
3BASIC OPERATION
Time Zone Adjustment（When the region or time zone where the watch is used is changed）
Time zone adjustment
The time zone where you are is localized to adjust the watch to the precise
current time by receiving GPS signals.
Precautions on time zone adjustment
If the time zone is adjusted near a time zone boundary, the time of the adjacent time
zone may be displayed.
In some areas the boundaries observed by the watch may not exactly correlate to
the actual time zone markers on the land.
This does not indicate a malfunction.
In this case, set the time zone in the manual time zone setting mode.
When the time zone is adjusted while traveling on land, avoid time zone boundaries
to carry out time zone adjustment in the representative cities in the time zone
whenever possible.
In addition, when the watch is used near time zone boundaries, make sure to check
the time zone setting, and manually set the time zone as necessary.
Continued on the following page
9
3BASIC OPERATION
Check the time zone setting.
Press Button C once and then
release it
Check the time zone setting (within 5 seconds)
Press
and
Release
The currently set time zone is
displayed for 5 seconds.
Press
How to adjust the time zone
Continue to press Button B (6 sec), and then release it when the second hand moves to
the 30-sec position.
1
2
3
When the second hand points to “Y” or
“N,” reception is completed.
Direct the watch face upward and wait 4
Pressfor
6sec
BPC
JJY
BPC
JJY
It takes a maximum
of 2 min to complete
reception.
B
P
C
JJY
Mayreceive
E
a
s
y
t
o
r
e
c
e
i
v
e
C
a
n
n
o
t
r
e
c
e
i
v
e
3units
4units
5units
6units
・
・
・
・
・
・
2units
0units
1
2
10
3BASIC OPERATION
Depending on the area, Daylight Saving Time (DST) is individually set.
Daylight Saving Time means summer time, which is a system to lengthen
daylight time by advancing 1 hour when daylight time is long in summer. Daylight saving time has been adopted in about 80
countries, mainly in Europe and North America. The adoption and duration of daylight saving time vary depending on the country.
Daylight Saving Time (DST)
Press Button A once and then release it
Check Daylight Saving Time (DST) setting (within 5 seconds)
Press
and
Release
Daylight Saving Time (DST) setting is displayed for 5 seconds.
Press
Check Daylight Saving Time (DST) setting
1 2
Turn OFF Daylight Saving Time (DST)
Carry out operation of ① to ③ in the state where Daylight Saving Time (DST) setting is ON.
In operation of ② , adjust the indicator hand to the “OFF” position as shown in the gure at the right.
The hour and minute hands return by one hour.
Set Daylight Saving Time (DST)
Press Button A
Continue to press Button C (3 sec)
within 5 sec after operation of ①
When the hour and minute hands stop moving,
the DST setting mode is automatically
completed after approximately 5 sec.
Turn ON Daylight Saving Time (DST)
1 2 3
Press
Press
for
3sec
Press
11
3BASIC OPERATION
ボタンC
3秒押し
Carry out operation of ① to ③.
Set to the in-ight mode（ ）where the reception may inuence
operation of other electronics devices in an airplane, etc.
In the in-ight mode（ ）the GPS signal reception (time zone
adjustment, manual time adjustment, and automatic time
adjustment) does not work.
In-ight mode ( ) (When boarding)
In-ight mode （ ）
Reset the in-ight mode（ ）
Press
for
3sec
Press
and
Release
Set to the in-ight mode（ ）
Press Button B and then
release it.
Continue to press Button C (3 sec) within
approximately 5 sec after operation of ①.
1 2 3
In-ight mode
（ ）
setting
automatically ends after 5 sec
12
3BASIC OPERATION
Manual time zone setting (To set the watch to the local time of the destination in an airplane, etc.)
Manual time zone setting
How to manually set the time zone
When the hour and
minute hands stop
moving, press Button A
Press Button B or Button C to adjust the second hand
to the time zone of the destination
1 32
Press
clock
wise
counter
clock
wise
Press
for
3sec
In places where the time zone cannot be adjusted, the time zone can be set manually.
C o n t i n u e t o p r e s s
Button C (3 sec), and
when the second hand
has stopped, release it.
13
3BASIC OPERATION
The watch can be set to the precise current time of the currently set time zone.
(The time zone is not changed.)
Manual time adjustment (To set only the time)
Manual time adjustment
14
3BASIC OPERATION
Press
for
3sec
How to manually adjust the time
Continue to press Button B (3 sec),
and then release it when the second
hand moves to the 0-sec position.
1 3 42
Direct the watch face
upward and wait
It takes up to
1 min to complete
reception.
Press
BPC
J
J
Y
BPC
J
J
Y
When the second hand
points to “Y” or “N,”
reception is completed.
B
P
C
JJY
B
P
C
JJY
15
3BASIC OPERATION
This watch can be set to the precise current time by automatically
receiving GPS signals by exposure to bright light outdoors under an
open sky to adjust the time.
In addition, when the watch is concealed under a sleeve and the dial
is not exposed to sucient light even if outdoors under an open sky,
the watch stores the time of the previous successful manual time
adjustment (or time zone adjustment), and automatically starts time
adjustment at the same time.
During reception, the hands move in the same manner as the manual time adjustment.
→How to manually adjust the time P.44〜45
< When it is dicult to expose to light suciently >
Even if outdoors under an open sky, when the watch is concealed under a sleeve in winter time, etc., in
an area where the daylight hours are short, or when the watch is not likely to be exposed to sucient
light for a long time due to bad weather, the watch is designed to allow for automatic time reception at
the time when the manual time adjustment was successful the last time.
When the watch is exposed to the operating environment above, automatic time adjustment is likely
to be successful by making manual time adjustment successful in time periods where the watch is
frequently used in a place where GPS signals can be easily received under an open sky.
→How to manually adjust the time P. 45
However, as the watch judges to start automatic time adjustment taking into consideration the following
conditions, the watch does not necessarily start automatic time adjustment by exposure to bright light.
・Charging status
・Past reception status
7th
6
th
Automatic time adjustment
16
3BASIC OPERATION
The type of reception and reception result (success or failure) of the last GPS signal
reception is displayed for 5 seconds.
・
The reception was
successful.
Use the watch as it is.
When the reception
result is Y
When the reception
result is N
・ The reception has
failed.
Move to the outdoors
where GPS signals can
be easily received as
necessary to receive
GPS signals.
Reception result display (Check that reception was successful)
1 2
Press Button B once
and then release it
Check that reception was successful (within 5 sec)
B
P
C
J
JY
BPC
J
JY
Y
N
Press
and
Release
Press
17
4DETAILED INFORMATION
＜Ready for leap second data reception＞
Leap second
The leap second is
to compensate for
deviations from the
universal time (UT)
which is astronomically
determined and the
“International Atomic
Time (TAI).
“1 second” may be
added (deleted) once
a year or every few
years.
Automatic leap
second reception
function
A leap second is
automatically added by
receiving “leap second
data” from GPS signals
at the time of leap
second addition.
When GPS signals are received under the following conditions, the leap second data
reception is also started.
・GPS signals are received after the system reset
・GPS signals have not been received for a long time
・Leap second data reception has failed
(Leap second data reception is performed again during the next GPS signal reception.
It is repeated until the leap second data reception is successful.)
The indicator hand displays as shown at
the right when GPS signals are received
(time zone adjustment or time adjustment)
around June or December (display of being
ready for leap second data reception or
receiving leap second data). At this time,
the second hand points to any of the 0 to
18-sec positions to indicate the waiting
time until the leap second data reception
by minutes. The waiting time is subtracted
for each minute, and when the second
hand points to the 0-sec position, the leap second data reception is started.
It is recommended you move to a place where GPS signals can be easily
received.
The second hand moves in the same manner as the manual time adjustment during the leap
second data reception.
When the leap second data reception is completed, after the reception result is displayed, the
second hand starts moving at 1-sec intervals.
The indicator hand also returns to display the charging status. Use the watch as it is.
Reception of leap second data
Leap second (Automatic leap second reception function)
18
5IN CASE OF AN UNUSUAL MOVEMENT OF THE SECOND HAND
2-sec interval movement/5-sec interval movement are brought about
Energy depletion forewarning function (Second hand movement and watch state)
When the energy stored in the watch runs low, the energy depletion forewarning function will work.
When the energy stored in the watch runs low, charge the watch by expose to light.
Movement of the second hand shows the state of the watch (working functions).
State
Restriction on
function/display
Solution
Continued on the following page
19
Other manuals for Astron 7X52
1
Table of contents
Other Seiko Watch manuals
Seiko
Seiko Coutura SSC788 Instruction Manual
Seiko
Seiko 5M45 User manual
Seiko
Seiko Limited Edition Age of Discovery User manual
Seiko
Seiko S802 User manual
Seiko
Seiko C-16 User manual
Seiko
Seiko 5Y89 User manual
Seiko
Seiko CREDOR 7R06 User manual
Seiko
Seiko Cal. 8L35 User manual
Seiko
Seiko 7A38 User manual
Seiko
Seiko 5Y85 User manual
