(WITHOUT PRICE)
SERVICE MANUAL
& PARTS LIST
REF. NO. S/M-576
NOVEMBER 1997
QW-1646
MODULE NO.
R
PRL-10SJ
INDEX
- 1 -
CONTENTS
1. SPECIFICATIONS : QW-1646
1. SPECIFICATIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · 1
2. OPERATION CHART · · · · · · · · · · · · · · · · · · · · · · · · · 2
3. DRAWINGS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 5
3-1. BLOCK DIAGRAM · · · · · · · · · · · · · · · · · · · · · · · · · 5
3-2. CHECKING TERMINALS AND COMPONENTS · · · · 6
3-3. N1~N4 PADS · · · · · · · · · · · · · · · · · · · · · · · · · · · · 6
4. EXPLODED VIEW · · · · · · · · · · · · · · · · · · · · · · · · · · · 7
5. PARTS LIST · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 8
6. PRECAUTIONS FOR REPAIR · · · · · · · · · · · · · · · · · · · 9
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE · · · 9
6-2. ACCURACY CHECKING · · · · · · · · · · · · · · · · · · · · 9
Item
Detail
Item
Detail
Battery
CR2016
Accuracy
±15sec./month
Battery life
Approx. 24 months
Accuracy setting system Trimmer capacitor
Current consumption
2.26
µA maximum
Accuracy checking
See page 9
Alarm system
Piezo plate on Back cover
Accuracy setting
+0.25~+0.35sec./day
Function
· Electro-luminescent backlight
Auto light switch
· Low temperature resistant (-20 C)
· Thermometer
Measuring range: -20 C to 60 C
Display unit: 0.1 C
· Sunrise and sunset data:
(Sunrise/sunset times based on input data)
· Countdown alarm
Input range: 1 min. to 60 min.
Unit: 1 sec.
· Daily alarm
· Hourly time signal
Regular timekeeping: Hr, min, sec, pm, mo, date, day
· Auto-calendar (Pre-programmed until the year 2039)
· 12/24-hour formats
- 2 -
2. OPERATION CHART : QW-1646
Holding down
D
THERMOMETER MODE
A built-in temperature sensor measures temperature and shows the measured value
on the display. The thermometer can be calibrated to correct for errors.
Important
Temperature measurements are affected by your body temperature (while you are
wearing the watch), direct sunlight, and moisture. To achieve a more accurate
temperature measurement, remove the watch from your wrist, place it in a well
ventilated location out of direct sunlight, and wipe off all moisture from the case. It
takes approximately 20 to 30 minutes for the case of the watch to reach the actual
surrounding temperature.
About Temperature Measurement
· A temperature graph which is automatically updated every five minutes, is shown on
the display in all modes (except when making settings). Measured temperature
values can be viewed in the Thermometer Mode only.
· Pressing
while in the Thermometer Mode performs temperature measurement
and causes the measured value to appear on the display.
The display shows " . °C" if a measured
value falls outside the range of 20°C to 60°C.
The normal display will return as soon as the
temperature returns within the allowable range.
Current
temperature*
Mode
indicator
Temperature
graph
TIMEKEEPING MODE
To set the time and date
1. Hold down
while in the Timekeeping Mode
until the seconds digits flash on the display
because they are selected.
2. Press
to change the selection in the following
sequence.
3. While the seconds digits are selected (flashing),
press
to reset the seconds to 00. If you press
while the seconds count is in the range of 30
to 59, the seconds are reset to 00 and 1 is
added to the minutes. If the seconds count is in
the range of 00 to 29, the minutes count is
unchanged.
Month
and Day
Minutes
PM
indicator
Day of
week
Seconds
Day
Month
Year
Hour
Minutes
12/24-Hour
Format
Day of
week
Hour
Seconds
Temperature
graph
4. While any other digits (beside seconds) are selected (flashing), press
to
increase the number or
to decrease it. While the day of the week is selected,
press
to advance to the next day and
to move back. While the 12/24-hour
format setting is selected, press
to toggle it between 12 and 24.
· Except for when adjusting the seconds or setting the 12/24-hour format, holding
down a button changes the current selection at high speed.
· When the 12-hour format is selected, the indicator A appears on the display to
indicate "A.M." times or indicator P appears on the display to indicate "P.M." times.
Selecting the 24-hour format causes the indicator 24 to appear on the display.
5. After you set the time and date, press
to return to the Timekeeping Mode.
· The date can be set within the range of January 1, 1995 to December 31, 2039.
· If you do not operate any button for a few minutes while a selection is flashing, the
flashing stops and the watch goes back to the Timekeeping Mode automatically.
Moving the watch to a position that is parallel to the ground and then tilting it
towards you approximately 40 degrees causes the backlight to illuminate.
ABOUT THE BACKLIGHT
About the Auto Backlight Function
When the auto backlight function is turned on, the backlight automatically turns on for
two seconds under the conditions described below. Avoid wearing the watch on the
inside of your wrist. Doing so causes the auto backlight to operate when not needed,
which shortens battery life.
Parallel to
ground
40°
To switch the auto backlight function on and off
In the Timekeeping Mode, hold down
for one or two seconds to turn the auto
backlight function on and off.
· The auto backlight indicator is shown on the display in all modes while the auto
backlight function is on.
· In order to protect against running down the battery, the auto backlight function is
automatically turned off approximately three hours after you turn it on. Repeat the
above procedure to turn the auto backlight function back on if you want.
· Pressing
at any time illuminates the display for about two seconds, regardless of
the auto backlight?s on/off setting.
OFF
ON
Auto backlight indicator
· The backlight may not illuminate if the face of the watch is more than 15 degrees
off parallel to the left or right. Make sure that the back of your hand is parallel to the
ground.
· Static electricity or magnetic force can interfere with proper operation of the auto
backlight function. If the auto backlight does not illuminate, try moving the watch
back to the starting position (parallel with the ground) and then tilt it back toward
you again. If this does not work, drop your arm all the way down so it hangs at your
side, and then bring it back up again.
· Under certain conditions the backlight may not light until about one second or less
after turn the face of the watch towards you. This does not necessarily indicate
malfunction of the backlight.
Parallel to ground
More than 15 degrees
too high
More than 15 degrees
too low
GENERAL GUIDE
· Press
to change from mode to mode. After you perform an operation in any mode, pressing
returns to the Timekeeping Mode.
· In any mode (except when making settings) press
to illuminate the display for about two seconds.
Thermometer Mode
Countdown
Alarm Mode
Alarm Mode
Sunrise/Sunset Mode
SUNRISE
SUNSET
Timekeeping Mode
Caution
· The backlight of this watch employs an electro-luminescent (EL) light, which loses its
illuminating power after very long term use.
· Frequent use of the backligfht shortens the battery life.
· The watch emits an audible sound whenever the display is illuminated. This is because the
EL light vibrates slightly when lit. It does not indicate malfunction of the watch.
Warning!
· Never try to read your watch when mountain climbing or hiking in areas that are dark
or in areas with poor footing. Doing so is dangerous and can result in serious
personal injury.
· Never try to read your watch when running on a roadside or in any other location
where there might be vehicular or pedestrian traffic. Doing so is dangerous and can
result in serious personal injury.
· Never try to read your watch when riding on a bicycle or when operating a
motorcycle or any other motor vehicle. Doing so is dangerous and can result in a
traffic accident and serious personal injury.
· When you are wearing the watch, make sure that its auto backlight function is turned
off before riding on a bicycle or operating a motorcycle or any other motor vehicle.
Sudden and unintended operation of the auto backlight can create a distraction,
which can result in a traffic accident and serious personal injury.
Accurate temperature measurements cannot be achieved while you are wearing the
watch. The following graph illustrated affects of body temperature on actual
temperature.
Temperature
Temperature measured when watch is worn on wrist
40 C
30 C
20 C
10 C
0 C
10 C20 C30 C
40 C
Approximate
Differences caused by
individual body
temperture or clothing
Calibrating the Temperature Measurement
The temperature sensor of this watch is calibrated at the factory before shipment and
further adjustment is normally not required. If noticeable error is found in the
temperature readings produced by the watch, you can adjust it to correct the error.
Important
Incorrectly calibrating the temperature measurement of this watch can result in
incorrect readings. Carefully read the following before doing anything.
· Compare the readings produced by the watch with those of another reliable,
accurate thermometer.
· If calibration is required, remove the watch from your wrist and wait for 20 or 30
minutes to give the temperature of the watch time to stabilize.
· Perform the temperature calibration before procedure as quickly as possible to
avoid the temperature of the watch being affected by your body temperature.
· You can also preform temperature calibration underwater, if the water temperature
is stable.
C
C
C
C
C
D
D
D
D
D
D
D
D
D
D
B
B
B
B
B
B
B
A
A
A
A
C
A
- 3 -
To calibrate the temperature
1. Holding down
while in the Thermometer Mode
and the current temperature digits flash.
2. Each press of
increase the displayed
temperature by 0.1°C, and pressing the
decrease it by 0.1°C.
· You can calibrate the temperature within a range
of 9.9°C to +9.9°C.
· Press
and
at the same time to rest the
temperature calibration to the factory setting.
3. After calibrating the temperature, press
to
return to the Thermometer Mode.
· If you do not operate any button for a few minutes
while a selection is flashing, the flashing stops
and the watch goes back to the Thermometer
Mode automatically.
Flashes
COUNTDOWN ALARM MODE
The countdown timer can be set within a range of
1 minute to 60 minutes. When the countdown
reaches zero, an alarm sounds for 10 seconds or
until you press any button.
To set the countdown time
1. Hold down
while in the Countdown Alarm
Mode. The minutes digits flash on the display
because they are selected.
2. Press
to increase the minutes digits or
to
decrease them. Holding down either button
changes the setting at high speed.
3. After you set the countdown alarm time, press
to return to the Countdown Alarm Mode.
· If you do not operate any button for a few minutes
while a selection is flashing, the flashing stops
and the watch goes back to the Countdown Alarm
Mode automatically.
Mode
indicator
Current
time
Minutes
Seconds
To use the countdown time
1. Press
while in the Countdown Alarm Mode to start the countdown timer.
2. Press
again to stop the countdown timer.
· You can resume countdown timer operation by pressing
.
3. Stop the timer and then press
to reset the countdown time to its starting value.
ALARM MODE
When the Daily Alarm is turned on, the alarm
sounds for 20 seconds at the preset time each day.
Press any button to stop the alarm after it starts to
sound. When the Hourly Time Signal is turned on,
the watch beeps every hour on the hour.
To set the alarm time
1. Hold down
while in the Alarm Mode. The hour
digits flash on the display because they are
selected. At this time the Daily Alarm is turned on
automatically.
2. Press
to change the selection in the following
sequence.
Mode
indicator
Current
time
Minutes
Alarm on
indicator
Hourly time
signal on
indicator
Hour
Hour
Minutes
3. Press
to increase the selected digits or
to decrease them. Holding down
either button changes the selection at high speed.
· The format (12-hour and 24-hour) of the alarm time matches the format you select
for normal timekeeping.
· When setting the alarm time using the 12-hour format, take care to set the time
correctly as morning (A) or afternoon (P).
4. After you set the alarm time, press
to return to the Alarm Mode.
· If you do not operate any button for a few minutes while a selection is flashing, the
flashing stops and the watch goes back to the Alarm Mode automatically.
To switch the daily alarm and hourly time signal on and off
Press
while in the Alarm Mode to change the status of the daily alarm and hourly
time signal in the following sequence.
To test the alarm
Hold down
while in the Alarm Mode to sound the alarm.
Both ON
Both OFF
Daily Alarm
only
Hourly Time
Signal only
Alarm on indicator
Hourly time signal on indicator
SUNRISE/SUNSET MODE
Be sure to set the current time and your current
location before trying to use Sunrise/Sunset
functions. The Sunrise/Sunset functions tell you the
time of sunrise and sunsets for specific dates.
To set the location date
· See the Time Zone Chart at the back of this
manual.
1.Holding down
while in the Sunrise/Sunset
Mode causes the GMT differential data to start
flashing because it is selected.
2.Press
to change the selection in the following
sequence.
Sunrise time
Sunset time
Mode
indicator
Date
Month
GMT differential
Longitude/Latitude
3. While the GMT differential is selected (flashing),
press
to increase it. Holding down
changes
the current selection at high speed.
4. While the longitude/latitude is selected (flashing),
press
to change the longitude or
to change
the latitude. Holding down either button changes
the corresponding setting at high speed.
< Latitude >
Press
0°E~180°E
179°W~1°W
Press
< Longitude >
0°N~65°N
65°S~1°S
To display the sunrise and sunset times for a specific date
1. Use
to enter the Sunrise/Sunset Mode.
· When you enter the Sunrise/Sunset Mode from other mode, the display shows the
sunrise/sunset data for today?s data (as set in the Timekeeping Mode).
2. Press
to advance the date. Holding down
returns to the current date.
3. When the date you want is displayed, you will have to wait for about 15 seconds
as the watch performs its internal calculations before displaying the sunrise/sunset
time for the date.
Notes
· If you think that the watch is not showing the correct information, check the settings
of the watch in the following order: year, GMT differential, longitude, latitude,
east/west, north/south.
· Sunrise and sunset times are for sea level locations. Actual times may differ sightly
depending on your elevation.
· Sunrise and sunset times are correct with a range of 5 minutes at latitudes less
than 50, and 10 minutes at latitudes greater than 50.
5. After you set the location data, press
to return to the Sunrise/Sunset Mode.
· If you do not operate any button for a few minutes while a selection is flashing, the
flashing stops and the watch goes back to the Sunrise/Sunset Mode automatically.
· You can set a latitude within the range of 65° south to 65° north.
· For the Longitude, always set 0° as 0°E, and 180° as 180°E.
· Be sure to advance the GMT differential by one hour when summer time (daylight
saving time) is applicable.
Important
After you change a setting in the above procedure, the watch needs a bit of time to
calculate certain information. During this calculation, the patterns in the graphic
display move. Wait until these patterns stop before trying to perform the next
procedure.
C
C
C
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
B
B
B
B
B
B
A
A
A
A
A
A
A
A
A
SUNRISE
SUNSET
LON.
GMT
LAT.
- 4 -
TIME ZONE CHART
NO.
CITY
THE DIFFERENCE
FROM GMT FOR
STANDARD TIME
LONGITUDE
LATITUDE
1. PAGO PAGO
11 171°W
14°N
2. HONOLULU
10 158°W
21°N
3. ANCHORAGE
9
150°W
61°N
4. NOME
9
165°W
65°N
5. LOS ANGELES
8
118°W
34°N
6. SAN FRANCISCO 8
122°W
38°N
7. LAS VEGAS
8
115°W
36°N
8. VANCOUVER
8
123°W
49°N
9. SEATTLE
8
122°W
48°N
10. DENVER
7
105°W
40°N
11. EL PASO
7
106°W
32°N
12. EDMONTON
7
114°W
54°N
13. CHICAGO
6
88°W
42°N
14. HOUSTON
6
95°W
30°N
NO.
CITY
THE DIFFERENCE
FROM GMT FOR
STANDARD TIME
LONGITUDE
LATITUDE
15. DALLAS
6
97°W
33°N
16. NEW ORLEANS
6
90°W
30°N
17. WINNIPEG
6
97°W
50°N
18. MEXICO CITY
6
99°W
19°N
19. NEW YORK
5
74°W
41°N
20. MONTREAL
5
74°W
45°N
21. DETROIT
5
83°W
42°N
22. MIAMI
5
80°W
26°N
23. BOSTON
5
71°W
42°N
Add 1 hour to the difference time if DST
(Daylight Saving Time) is used. (EX. if difference
of standard time is +2, that of DST is +3.)
NO.
CITY
THE DIFFERENCE
FROM GMT FOR
STANDARD TIME
LONGITUDE
LATITUDE
1. PANAMA CITY
5
80°W
9°N
2. LIMA
5
77°W
12°S
3. BOGOTA
5
74°W
5°N
4. CARACAS
4
67°W
10°N
5. LA PAZ
4
68°W
17°S
6. SANTIAGO
4
71°W
33°S
7. PORT OF SPAIN
4
61°W
11°N
8. RIO DE JANEIRO 3
43°W
23°S
9. SAO PAULO
3
47°W
24°S
10. BRASILIA
3
48°W
16°S
11. BUENOS AIRES
3
58°W
35°S
12. MONTEVIDEO
3
56°W
35°S
NO.
CITY
THE DIFFERENCE
FROM GMT FOR
STANDARD TIME
LONGITUDE
LATITUDE
Add 1 hour to the difference time if DST
(Daylight Saving Time) is used. (EX. if difference
of standard time is +2, that of DST is +3.)
NO.
CITY
THE DIFFERENCE
FROM GMT FOR
STANDARD TIME
LONGITUDE
LATITUDE
1. AZORES
1
25°W
38°N
2. LONDON
+0
0°E
51°N
3. DUBLIN
+0
6°W
53°N
4. CASABLANCA
+0
8°W
34°N
5. LISBON
+0
9°W
39°N
6. PARIS
+1
2°E
49°N
7. MILAN
+1
9°E
45°N
8. ROME
+1
12°E
42°N
9. MADRID
+1
4°W
40°N
10. AMSTERDAM
+1
5°E
52°N
11. HAMBURG
+1
10°E
54°N
12. FRANKFURT
+1
9°E
50°N
13. VIENNA
+1
16°E
48°N
14. STOCKHOLM
+1
18°E
59°N
NO.
CITY
THE DIFFERENCE
FROM GMT FOR
STANDARD TIME
LONGITUDE
LATITUDE
15. ATHENS
+2
24°E
38°N
16. HELSINKI
+2
25°E
60°N
17. ISTANBUL
+2
29°E
41°N
Add 1 hour to the difference time if DST
(Daylight Saving Time) is used. (EX. if difference
of standard time is +2, that of DST is +3.)
NO.
CITY
THE DIFFERENCE
FROM GMT FOR
STANDARD TIME
LONGITUDE
LATITUDE
1. BEIRUT
+2
35°E
34°N
2. DAMASCUS
+2
36°E
33°N
3. CAPE TOWN
+2
18°E
34°S
4. KUWAIT
+3
48°E
29°N
5. RIYADH
+3
47°E
25°N
6. JEDDAH
+3
39°E
21°N
7. ADEN
+3
45°E
13°N
8. ADDIS ABABA
+3
39°E
9°N
9. NAIROBI
+3
37°E
1°S
10. DUBAI
+4
55°E
25°N
11. ABU DHABI
+4
54°E
24°N
12. MUSCAT
+4
58°E
23°N
13. KARACHI
+5
67°E
25°N
14. PRAIA
1
23°W
15°N
NO.
CITY
THE DIFFERENCE
FROM GMT FOR
STANDARD TIME
LONGITUDE
LATITUDE
15. DAKAR
+0
17°W
15°N
16. ABIDJAN
+0
4°W
5°N
Add 1 hour to the difference time if DST
(Daylight Saving Time) is used. (EX. if difference
of standard time is +2, that of DST is +3.)
NO.
CITY
THE DIFFERENCE
FROM GMT FOR
STANDARD TIME
LONGITUDE
LATITUDE
1. DHAKA
+6
90°E
24°N
2. BANGKOK
+7
100°E
14°N
3. JAKARTA
+7
107°E
6°S
4. PHNOM-PENH
+7
105°E
12°N
5. HANOI
+7
106°E
21°N
6. VIENTIANE
+7
103°E
18°N
7. HONG KONG
+8
114°E
22°N
8. SINGAPORE
+8
104°E
1°N
9. KUALA LUMPUR +8
102°E
3°N
10. BEIJING
+8
116°E
40°N
11. TAIPEI
+8
122°E
25°N
12. MANILA
+8
121°E
15°N
13. PERTH
+8
116°E
32°N
14. ULAN BATOR
+8
107°E
48°N
15. TOKYO
+9
140°E
36°N
NO.
CITY
THE DIFFERENCE
FROM GMT FOR
STANDARD TIME
LONGITUDE
LATITUDE
16. SEOUL
+9
127°E
38°N
17. PYONGYANG
+9
126°E
39°N
18. SYDNEY
+10 151°E
34°S
19. MELBOURNE
+10 145°E
38°S
20. GUAM
+10 145°E
13°N
21. NOUMEA
+11 166°E
22°S
22. PORT VILA
+11 168°E
18°S
23. WELLINGTON
+12 175°E
41°S
24. CHRISTCHURCH +12 173°E
43°S
25. SUVA
+12 178°E
18°S
26. NAURU ISLAND
+12 166°E
1°S
27. PAPEETE
10 150°W
18°S
Add 1 hour to the difference time if DST
(Daylight Saving Time) is used. (EX. if difference
of standard time is +2, that of DST is +3.)