Casio PRG-60TJ Troubleshooting guide

SERVICE MANUAL
& PARTS LIST
(WITHOUT PRICE)
QW-2766
MODULE NO.
R
REF. NO. S/M-841
FEB. 2004
PRG-60TJ

CONTENTS
Page
1. SPECIFICATIONS: MODULE QW-2766 .................................................... 1
2. OPERATION CHART: MODULE QW-2766 ............................................... 2
3. DRAWINGS: MODULE QW-2766
3-1. LCD DIAGRAM ............................................................................................10
3-2. CIRCUIT DIAGRAM ..................................................................................... 11
3-3. CHECKING TERMINALS AND COMPONENTS .........................................12
4. EXPLODED VIEW: MODULE QW-2766 ................................................... 13
5. PARTS LIST: MODULE QW-2766 ............................................................ 15
6. PRECAUTIONS FOR REPAIR: MODULE QW-2766
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE ..................................... 16
6-2. ACCURACY CHECKING ............................................................................. 17
6-3. SOLAR CELL-PCB ASS'Y CONTACT CHECKING....................................18

— 1 —
1. SPECIFICATIONS: MODULE QW-2766
Item Detail
Battery CTL1616 (Storage battery)
Note: Use CTL1616 only. Other storage battery or CR1616 can cause
damage to the watch.
Battery life Approx. 6 months
Current consumption 1.08 µA maximum
Alarm system Piezo plate on Cover/Back
Accuracy ±15 sec./month
Accuracy setting system Trimmer capacitor
Accuracy checking See page 17
Functions: • Electro-luminescent backlight
Full auto EL light, afterglow
• Solar powered
• Low-temperature resistant (-10 °C / 14 °F)
• Digital compass
Measuring range: 0 °to 359 °
Measuring unit: 1 °
20 sec continuous measurement
Bidirectional calibration and northerly calibration function
• Altimeter
Measuring range: -700 to 10,000 m
without reference altitude
Measuring unit: 5 m
Memory capacity: One set of memory measurement data, which includes
up to 41 measurement records (date, time, altitude) and one record for
maximum altitude (date, time, altitude)
Other: Reference altitude setting
• Barometer
Display range: 260 to 1,100 hPa/mb
Display unit: 1 hPa / mb
Barometric pressure history graph (Graph of 18 hrs of pressure readings
at 3 hr intervals, which plots rises or falls in pressure that are 3hPa or
greater)
• Thermometer
Display range: -10 to 60 °C
Display unit: 0.1 °C
• 1/100-sec stopwatch
Measuring capacity: 23:59'59.99"
Measuring modes: Elapsed time,split time, 1st-2nd place times
• Daily alarm
• Hourly time signal
• Battery power indicator
• Power Saving (Turns off the display when the watch is left in the dark)
• Auto-calendar (to year 2039)
• 12/24-hr format
• Regular timekeeping: Hr, min, sec, pm, month, date, day

— 2 —
2. OPERATION CHART: MODULE QW-2766
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out
of your purchase, be sure to carefully read this manual and keep it on hand
for later reference when necessary.
Expose the watch to bright light to charge its battery before using it.
You can use this watch even as its battery is being charged by exposure to
bright light.
• Be sure to read “Battery” of this manual for important
information you need to know when exposing the watch to bright
light.
Applications
The built-in sensors of this watch measure direction, altitude, barometric
pressure, and temperature. Measured values are then shown on the display.
Such features make this watch useful when hiking, mountain climbing, or
when engaging in other such outdoor activities.
Warning!
• The measurement functions built into this watch are not intended for
taking measurements that require professional or industrial precision.
Values produced by this watch should be considered as reasonable
representations only.
•When engaging in mountain climbing or other activities in which losing
your way can create a dangerous or life-threatening situation, always be
sure to use a second compass to confirm direction readings.
•CASIO COMPUTER CO., LTD. assumes no responsibility for any loss,
or any claims by third parties that may arise through the use of this
watch.
If the digital display of the watch is blank...
If the SLEEP indicator is on the display (either
flashing or steady), it means that the display is
blank because the watch’s Power Saving function
has turned off the display to conserve power.
Power Saving automatically turns off the display
and enters a sleep state whenever the watch is
left for a certain period where it is dark.
• The initial factory default setting is Power Saving on.
• The watch recovers from the sleep state if you move it to a well-lit area*, if
you press any button, or if you angle the watch towards your face for
reading.
*
It can take up to two seconds for the display to turn on.
• See “Power Saving Function”for more information.
l
l
l
l
l
l
l
l
l
l
l
l
l
l
About This Manual
• Button operations are indicated using the
letters shown in the illustration.
• Each section of this manual provides you with
the information you need to perform operations
in each mode. Further details and technical
information can be found in the “Reference”
section.
• Most of the display examples in this manual
show only the digital display, without the analog
hands, as shown in the lower illustration.
(Light)
l
l
l
l
l
l
l
l
Digital Compass Mode
Press C.
l
l
l
l
l
l
l
l
Barometer/
Thermometer Mode
Press B.
• From the Timekeeping Mode or another sensor mode, you can use buttons
B, C, or E to directly enter the mode assigned to it. From any other
mode, you must go to the Timekeeping Mode first.
General Guide
• The illustration below shows which buttons you need to press to navigate
between modes.
• In any mode, press Lto illuminate the display.
Press D .
Data Recall Mode
Alarm Mode
Sensor Modes
Timekeeping Mode
▲
D
▲
▲
Altimeter Mode
▲
D
▲
Press D.
▲
▲
Press E.
l
l
l
l
l
l
l
l
Stopwatch Mode Hand Setting Mode
▲
▲
D
D
▲
Hold down
D .
Timekeeping
This watch features separate digital and analog
timekeeping. The procedures for setting the
digital time and analog time are different.
•Whenever you need to adjust both the digital
and the analog time settings, make sure you
adjust the digital setting first.
Digital Time and Date
Use the Timekeeping Mode to set and view a
digital display of the current time and date. When
setting the digital time, you can also configure
settings for the 12/24-hour format and the Power
Saving function.
Hour : Minutes
PM indicator
Seconds
Month –Day
Day of week
Year
Seconds Hour Minutes
Day Month
12/24-Hour
Format
Power Saving
on/off Day of
week
To set the digital time and date
1. In the Timekeeping Mode, hold down Auntil the seconds start to flash,
which indicates the setting screen.
2. Press Dto move the flashing in the sequence shown below to select other
settings.
4. Press Ato exit the setting screen.
• Resetting the seconds only (without changing the hour or minute setting)
causes the analog minute hand setting to be adjusted automatically.
• See “Power Saving Function”for details about configuring Power Saving
settings.
Setting
Seconds
Hour, Minutes
12/24-Hour
format
Year, Month,
Day
Day of week
PowerSaving
on/off
Button Operations
Press Eto reset the seconds to 00.
Use E(+) to change the setting.
Use E
Use E
Use E
to toggle between 12-hour (12H)
and 24-hour (24H) timekeeping.
(+) to change the setting.
(+) to change the setting.
Press Eto toggle Power Saving on (ON)
and off (OFF).
Screen
3. When the setting you want to change is flashing, use Eto change it as
described below.

— 3 —
Note
• Resetting the seconds to 00 while the current count is in the range of 30 to
59 causes the minutes to be increased by 1. In the range of 00 to 29, the
seconds are reset to 00 without changing the minutes.
• With the 12-hour format, the P(PM) indicator appears on the display for
times in the range of noon to 11:59 p.m. and no indicator appears for times
in the range of midnight to 11:59 a.m.
• With the 24-hour format, times are displayed in the range of 0:00 to 23:59,
without any indicator.
• The 12-hour/24-hour timekeeping format you select in the Timekeeping
Mode is applied in all modes.
• The year can be set in the range of 2000 to 2039.
• The watch’s built-in full automatic calendar automatically makes allowances
for different month lengths and leap years. Once you set the date, there
should be no reason to change it except when battery power drops to Level
4.
Setting the Analog Time
Perform the procedure below when the time indicated by the analog hands
does not match the time of the digital display.
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
Digital Compass
A built-in bearing sensor detects magnetic north. The watch uses this data to
display an angle value and four pointers indicating north, south, east, and
west. Direction readings are performed in the Digital Compass Mode.
• You can calibrate the bearing sensor if you suspect the direction reading is
incorrect.
To enter and exit the Digital Compass Mode
1. While in the Timekeeping, Barometer/Thermometer, orAltimeter Mode,
press Cto enter the Digital Compass Mode.
• At this time, the watch immediately starts a Digital Compass operation.
After the first reading is obtained, the watch continues to take direction
readings automatically each second, for up to 20 seconds.
2. Press Dto return to the Timekeeping Mode.
To take a direction reading
1. Enter the Digital Compass Mode.
2. Place the watch on a flat surface or (if you are
wearing the watch), make sure that your wrist
is horizontal (in relation to the horizon).
3. Point the 12 o’clock position of the watch in
the direction you want to measure.
4. Press Cto start a Digital Compass
measurement operation.
• After direction measurement is complete, an
angle value appears on the display. The angle
value indicates the clockwise angle formed
between magnetic north (which is 0 degrees)
and the direction that the 12 o’clock position of
the watch is pointing.
• Also, four pointers appear to indicate magnetic
north, south, east, and west.
• After the first reading is obtained, the watch
continues to take direction readings
automatically each second, for up to 20
seconds.
l
l
l
l
l
l
l
l
l
l
Angle value (in degrees)
Magnetic north pointer
12 o’clock
position
NW 0
°
WNW
W
WSW
SW
SSW
S
SSE
SE
ESE
E
ENE
NE
NNE
N
NNW
Note
• Note that taking a measurement
while the watch is not horizontal
(in relation to the horizon) can
result in large measurement
error.
• Any ongoing direction measurement operation is temporarily paused while
the watch is performing an alert operation (alarm or hourly time signal) or
while the watch’s backlight is turned on (by pressing L). The measurement
operation resumes for its remaining duration after the operation that caused
the pause is finished.
• See “Digital Compass Precautions”for other important information about
taking direction readings.
Barometer/Thermometer
This watch uses a pressure sensor to measure air pressure (barometric
pressure) and a temperature sensor to measure temperature.
• You can calibrate the temperature sensor and the pressure sensor if you
suspect that readings are incorrect.
To take barometric pressure and temperature readings
Pressing Bin the the Timekeeping Mode or in any of the other sensor
modes enters the Barometer/Thermometer Mode and automatically starts
taking barometric pressure and temperature measurements.
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
▲
▲
Press Bto
toggle between
screens.
History Graph and
Barometric PressureHistory graph
Temperature
Barometric
pressure
Temperature and
Barometric Pressure
• It can take up to four or five seconds for the barometric pressure reading to
appear after you enter the Barometer/Thermometer Mode.
• Barometric pressure is displayed in units of 1hPa.
• The displayed barometric pressure value changes toxxxx hPa if a
measured barometric pressure falls outside the range of 260 hPa to 1100
hPa. The barometric pressure value will be displayed again as soon as the
measured barometric pressure is within the allowable range.
• Temperature is displayed in units of 0.1 ° C.
• The displayed temperature value changes to xx. x ° C if a measured
temperature falls outside the range of –10.0
° C to 60.0 ° C. The temperature
value will be displayed again as soon as the measured temperature is
within the allowable range.
• Some countries refer to the barometric pressure unit hecto-pascal (hPa) as
millibars (mb). It really makes no difference, because 1hPa = 1mb.
• See “Barometer and Thermometer Precautions”for important precautions.
Barometric Pressure History Graph
Barometric pressure indicates changes in the atmosphere. By monitoring
these changes you can predict the weather with reasonable accuracy.
The barometric pressure history graph contains points that show you the
changes in barometric pressure readings taken by the watch for up to the last
18 hours. The time line along the bottom of the graph runs from left to right,
which means that the rightmost point on the graph is the latest reading. The
relative positions of the points on the graph indicate whether barometric
pressure is rising, falling, or holding relatively steady.
• No point is plotted on the graph whenever a measurement operation fails
due to sensor malfunction, low battery power, or any other reason.
Relatively steady (within ± 3hPa)
Rising (rise greater than 3hPa)
Falling (fall greater than 3hPa)
The following shows how to interpret the data that appears on the barometric
pressure history graph.
A rising graph generally means improving weather.
A falling graph generally means deteriorating weather.
To adjust the analog time
1.In the Timekeeping Mode, press Dfour times
to enter the Hand Setting Mode.
2.Hold down Auntil the current digital time
starts to flash, which indicates the analog time
setting screen.
3.Press Eto advance the analog time setting by
20 seconds.
• Holding down Eadvances the analog time setting at high speed.
• If you need to advance the analog time setting a long way, hold down
Euntil the time starts advancing at high speed, and then press B.
This locks the high-speed hand movement, so you can release the two
buttons. High-speed hand movement continues until you press any
button. It will also stop automatically after the time advances 12 hours
or if an alarm starts to sound.
4. Press Ato exit the setting screen.
• To return to the Timekeeping Mode, press D.
• During measurement the watch displays an angle value and four direction
pointers of the first reading, which change dynamically when the watch is
moved.After measurement is complete, the angle value and four direction
pointers are frozen in accordance with the last measurement.
• The indicator flashes on the display while a measurement is in progress.
About Barometric and Temperature Measurements
• Barometric pressure and temperature measurement operations are
performed as soon as you enter the Barometer/Thermometer Mode. After
that, barometric pressure and temperature measurements are taken every
five seconds for the first three minutes.
• The indicator to the left of “BAROMETER”on the display flashes while a
measurement is in progress.
• The barometer automatically takes measurements every three hours
(starting from midnight), regardless of what mode you are in. The results of
these measurements are used for plotting points on the barometric
pressure history graph.
• You can also perform a barometric pressure and temperature measurement
at any time by pressing Bin the Barometer/Thermometer Mode.

—4 —
Barometer and Thermometer Precautions
• The pressure sensor built into this watch measures changes in air
pressure, which you can then apply to your own weather predictions. It is
not intended for use as a precision instrument in official weather prediction
or reporting applications.
• Sudden temperature changes can affect pressure sensor readings.
• 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.
Altimeter
A built-in altimeter uses a pressure sensor to detect the current air pressure,
which is then used to estimate the current altitude. The watch is pre-
programmed with ISA (International Standard Atmosphere) preset values,
which are used to convert air pressure readings to altitude values. If you
preset a reference altitude, the watch will also calculate the current relative
altitude based on your preset value. Memory is also provided for the storage
of altimeter data.
Important!
• This watch estimates altitude based on air pressure. This means that
altitude readings for the same location may vary if air pressure changes.
• This watch employs a semiconductor pressure sensor, which is affected by
temperature changes. Make sure that the watch is not being exposed to
temperature changes while you are taking altitude measurements.
• To avoid the effect of sudden temperature changes on measurement, wear
the watch so it is in direct contact with your wrist during measurement.
• Do not rely upon this watch for altitude measurements or perform button
operations while engaging in sports where there are sudden altitude
changes, while sky diving, hang gliding, or paragliding, or while riding a
gyrocopter, glider, or any other aircraft.
• Do not use this watch for measuring altitude in applications that demand
professional or industrial level precision.
• Remember that the air inside of a commercial aircraft is pressurized.
Because of this, the readings produced by this watch will not match the
altitude readings announced or indicated by the flight crew.
How the Altimeter Works
With the Preset Values (No Reference Altitude)
• The watch measures the air pressure at your current location and uses the
built-in ISAvalues to convert it to the equivalent altitude.
With a Reference Altitude
• If you set a reference altitude, the watch
uses that value when calculating altitude
based on air pressure.
• To determine the height of a tall building,
set the reference altitude to 0 on the
ground floor. Note, however, that you may
not be able to get a good reading if the
building is pressurized or air-conditioned.
• When mountain climbing, you can set the
reference value in accordance with a
marker along the way or altitude
information from a map.After you do this,
the altitude readings produced by the
watch will be more accurate than they
would without a reference altitude.
400
B
A
To take an altitude reading
Pressing Ein the Timekeeping Mode or in any
of the other sensor modes enters the Altimeter
Mode and automatically starts altitude
measurement.
• It can take up to four or five seconds for the
altitude reading to appear after you enter the
Altimeter Mode.
• TheAltimeter Mode screen also displays the
current temperature. See “Barometer/
Thermometer”for more information.
• During the first three minutes after entering the
Altimeter Mode, the indicator flashes on the
display and measurements are taken every five
seconds.After that, the indicator stops
flashing and remains on the display as
measurements are taken every two minutes.
l
l
l
l
l
l
l
l
l
Altitude
Temperature
Setting a Reference Altitude
After you set a reference altitude, the watch adjusts its air-pressure-to-altitude
conversion calculation accordingly. The altitude measurements produced by
this watch are subject to error caused by changes in air pressure. Because of
this, we recommend that you update the reference altitude whenever one is
available during your climb.
To set a reference altitude
1. In theAltimeter Mode, hold down Afor about
two seconds until the watch beeps and the
display goes blank. About four or five seconds
after that,
OFF or the current reference
altitude value (if set) will flash on the display.
• If OFF or the current reference altitude
value does not appear at this time, press A
to return to the Altimeter Mode screen, and
perform step 1 again.
2. Press E(+) or B(–) to change the current
reference altitude value by 5 meters.
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
Altitude Records
Storing altitude data in memory creates an altitude record. If a reading is
greater than all of the other altitude readings currently stored in memory, it is
stored in the maximum altitude record. The following describes the contents
of each type of record.
Recording date (year, month, day), time, and altitude: Up to 41 records
Maximum altitude (including recording date and time): 1 record
• The maximum altitude record shows information about the altitude record
that has the greatest altitude value. The maximum altitude record is
updated any time a reading produces an altitude that is greater than that of
the current maximum altitude record.
• Pressing Ecauses the measurement operation to restart from the
beginning of the cycle described above.
• Altitude is displayed in units of 5 meters.
• The measurement range for altitude is –700 to 10,000 meters.
• The measured altitude may be a negative value in cases where there is a
reference altitude value set or because of certain atmospheric conditions.
• The displayed altitude value changes to xxxxx meters if a measured
altitude falls outside the measurement range. The altitude value will be
displayed again as soon as the measured altitude is within the allowable
range.
• You can set the reference altitude within the range of –10,000 to 10,000
meters.
• Pressing Eand Bat the same time returns to OFF (no reference
altitude), so the watch performs air pressure to altitude conversions
based on preset data only.
3. Press Ato exit the setting screen.
To store an altitude record in memory
In theAltimeter Mode, hold down Efor about
one second until the watch beeps. This indicates
that a record of the altitude reading (date, time,
and altitude) has been stored in memory.
• You can recall data in memory using the Data
Recall Mode.
• Note that there is enough memory to store a
total of 41 records. If there are already 41
records in memory, storing another one
automatically deletes the oldest record to make
room for the new one.
To view altitude record data
1. Use Dto enter the Data Recall Mode.
• The message RECALL appears for about one second, followed by
maximum altitude record.
2. Press Eto cycle through the altitude record screens in the sequence
shownbelow.
• The maximum altitude record appears first.After that, each press of E
scrolls through records in sequence, starting from the oldest record.
• For each record, the lower part of the display alternates at one-second
intervals between the recording time and altitude value.
• If an error occurs while altitude data is being stored in memory or if there is
no altitude data in memory, xxxx is shown for the measured altitude
value on the corresponding altitude record screen.

—5 —
Maximum Data One
second
▲
Alternates at
1-second
intervals.
▲
▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲
▲
▲
Press E .
▲
E
E
Oldest DataNewest Data
Altitude
Recording date
(Year, Month –Day)
Recording time
(Hour : Minutes)
Data Recall Mode
Deleting the Maximum Altitude Record Data
Use the following procedure when you want to delete the data in the
maximum altitude record. Note that you can delete maximum altitude record
data only. You cannot delete the data of any of the other altitude records.
To delete the maximum altitude record data
1. Use the procedure under “To view altitude record data”to display the
maximum altitude record.
• The maximum altitude record is the one with MAX next to both the time
and altitude values.
2. Hold down
A for about two seconds. This will delete the data.
Alarm
After you set (and turn on) the daily alarm, the
alarm tone sounds when the alarm time is
reached. You can also turn on an Hourly Time
Signal that causes the watch to beep twice every
hour on the hour.
• All of the operations in this section are
performed in the Alarm Mode, which you enter
by pressing
D .
Alarm time (Hour : Minutes)
Alarm on indicator
Hourly time signal on
indicator
To set the alarm time
1. In the Alarm Mode, hold down A until the
hour setting of the alarm time starts to flash,
which indicates the setting screen.
• This automatically turns on the alarm.
2. Press
D to move the flashing between the
hour and minute settings.
3. While a setting is flashing, use
E to increase
it.
• When setting the alarm time using the 12-
hour format, take care to set the time
correctly as a.m. (no indicator) or p.m. (P
indicator).
4. Press
A to exit the setting screen.
l
l
l
l
l
l
l
l
l
l
l
l
l
To turn the daily alarm and the Hourly Time Signal on and off
In the Alarm Mode, press E to cycle through the settings shown below.
• The alarm on indicator and the Hourly Time Signal on indicator are shown
on the display in all modes while these functions are turned on.
Alarm Off
Signal Off Alarm On Signal Off Alarm Off
Signal On Alarm On
Signal On
Alarm On Indicator / Hourly Time Signal On Indicator
Stopwatch
The stopwatch lets you measure elapsed time,
split times, and two finishes.
• The display range of the stopwatch is 23 hours,
59 minutes, 59.99 seconds.
• The stopwatch continues to run, restarting from
zero after it reaches its limit, until you stop it.
• The stopwatch measurement operation
continues even if you exit the Stopwatch Mode.
• Exiting the Stopwatch Mode while a split time is
frozen on the display clears the split time and
returns to elapsed time measurement.
• All of the operations in this section are
performed in the Stopwatch Mode, which you
enter by pressing
D .
Hours Minutes
Seconds
1/100 second
To measure times with the stopwatch
First runner
finishes.
Display time
of first runner.
Display time of
second runner.
Elapsed Time
EEEB
Start Stop Re-start Stop Clear
Split Time
EBEB
Start Split Split release Stop Clear
(SPL displayed)
Two Finishes
EE
E
B
BBB
Start Split Stop Split release Clear
Second runner
finishes.
Backlight
The backlight uses an EL (electro-luminescent)
panel that causes the entire display to glow for
easy reading in the dark. The watch’s auto light
switch automatically turns on the backlight when
you angle the watch towards your face.
• The auto light switch must be turned on
(indicated by the auto light switch on indicator)
for it to operate.
• See “Backlight Precautions”for other important
information about using the backlight.
To turn on the backlight manually
Press L in any mode to illuminate the display for about two seconds.
• Backlight operation is disabled during the bearing sensor calibration
procedure.
• The above operation turns on the backlight regardless of the current auto
light switch setting.
Auto light switch on
indicator
Alarm Operation
The alarm sounds at the preset time for about 10 seconds (in all modes), or
until you stop it by pressing any button.
To test the alarm
In the Alarm Mode, hold down E to sound the alarm.
About the Auto Light Switch
Turning on the auto light switch causes the backlight to turn on for about two
seconds, whenever you position your wrist as described below in any mode.
Note that this watch features a “Full Auto EL Light”, so the auto light switch
operates only when available light is below a certain level. It does not turn on
the backlight under bright light.
Moving the watch to a position that is parallel to the ground and then tilting
it towards you more than 40 degrees causes the backlight to turn on.
• Wear the watch on the outside of your left wrist.
Parallel to
ground More than
40
°
Warning!
• Always make sure you are in a safe place whenever you are reading
the display of the watch using the auto light switch. Be especially
careful when running or engaged in any other activity that can result
in accident or injury. Also take care that sudden illumination by the
auto light switch does not surprise or distract others around you.
• When you are wearing the watch, make sure that its auto light switch
is turned off before riding on a bicycle or operating a motorcycle or
any other motor vehicle. Sudden and unintended operation of the auto
light switch can create a distraction, which can result in a traffic
accident and serious personal injury.

—6 —
• The auto light switch on indicator ( ) is on the display in all modes while
the auto light switch is turned on.
• The auto light switch is always disabled, regardless of its on/off setting,
when any one of the following conditions exists.
While a direction measurement operation is being performed in the
Digital Compass Mode
While a bearing sensor calibration operation is being performed in the
Digital Compass Mode
While the Hand Setting Mode setting screen is on the display
• The backlight may not light right away if you raise the watch to your face
while a barometric pressure or altitude measurement operation is in
progress.
Questions & Answers
Question: What causes incorrect direction readings?
Answer:
• Incorrect bidirectional calibration.Perform bidirectional calibration.
• Nearby source of strong magnetism, such as a household appliance, a
large steel bridge, a steel beam, overhead wires, etc., or an attempt to
perform direction measurement on a train, boat, etc.Move away from large
metal objects and try again. Note that digital compass operation cannot be
performed inside a train, boat, etc.
Question: What causes different direction readings to produce different
results at the same location ?
Answer: Magnetism generated by nearby high-tension wires is interfering
with detection of terrestrial magnetism. Move away from the high-
tension wires and try again.
Question: Why am I having problems taking direction readings indoors ?
Answer: A TV, personal computer, speakers, or some other object is
interfering with terrestrial magnetism readings.Move away from
the object causing the interference or take the direction reading
outdoors.Indoor direction readings are particularly difficult inside
ferro-concrete structures. Remember that you will not be able to
take direction readings inside of trains, airplanes, etc.
0 m 500 m
1000 m1500 m
2000 m2500 m
3000 m3500 m
4000 m
899 hPa
795 hPa
701 hPa
616 hPa
8.5
° C
2
° C
–4.5
° C
–11
° C
15
° C1013 hPa
About 6.5
° C
per 1000 m
About 8 hPa per 100 m
About 9 hPa per 100 m
About 10 hPa per 100 m
About 11 hPa per 100 m
About 12 hPa per 100 m
Altitude Air Pressure Temperature
Source: International Civil Aviation Organization
There are two standard methods of expressing altitude:Absolute altitude and
relative altitude.Absolute altitude expresses an absolute height above sea
level. Relative altitude expresses the difference between the height of two
different places.
Height of building 130 m
(Relative altitude) Rooftop at an altitude of
230 m above sea level
(Altitude above sea
level)
Sea
Question: How does the barometer work?
Answer: Barometric pressure indicates changes in the atmosphere, and by
monitoring these changes you can predict the weather with
reasonable accuracy.Rising atmospheric pressure indicates good
weather, while falling pressure indicates deteriorating weather
conditions.
The barometric pressures that you see in the newspaper and on
the TV weather report are measurements corrected to values
measured at 0 m sea level.
• Note that the following conditions will prevent you from obtaining accurate
readings:
When air pressure changes because of changes in the weather
Extreme temperature changes
When the watch itself is subjected to strong impact
Question: How does the altimeter work?
Answer: Generally, air pressure and temperature decrease as altitude
increases.This watch bases its altitude measurements on
International Standard Atmosphere (ISA) values stipulated by the
International Civil Aviation Organization (ICAO). These values
define relationships between altitude, air pressure, and
temperature.
Battery
This watch is equipped with a solar cell and a
rechargeable battery (secondary battery) that is
charged by the electrical power produced by the
solar cell.The illustration shown nearby shows
how you should position the watch for charging.
Example: Orient the watch so its face is pointing
at a light source.
• Note that charging efficiency
drops when any part of the solar
cell is blocked by clothing, etc.
• The illustration shows how to
position a watch with a resin band.
Solar cell
Important!
• Storing the watch for long periods in an area where there is no light or
wearing it in such a way that it is blocked from exposure to light can cause
rechargeable battery power to run down.Be sure that the watch is normally
exposed to bright light whenever possible.
• This watch employs a solar cell that converts light into electricity, which
charges a built-in rechargeable battery.Normally, the rechargeable battery
should not need replacement, but after very long use over a number of
years, the rechargeable battery may lose its ability to achieve a full charge.
If you experience problems getting the rechargeable battery to a full charge,
contact your dealer or CASIO distributor about having the rechargeable
battery replaced.
•The rechargeable battery should be replaced with a CASIO-specified
CTL1616 battery only. Other rechargeable batteries can cause damage to
the watch.
• All data stored in memory is deleted, and the current time and all other
settings return to their initial factory defaults whenever battery power drops
to Level 4 and when you have the battery replaced.
• Turn on the watch’s Power Saving function and keep it in an area normally
exposed to bright light when storing it for long periods.This helps to keep
the rechargeable battery from going dead.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down Bfor about two seconds to toggle the
auto light switch on ( displayed) or off ( not displayed).
• If you are in the Timekeeping Mode when you press B, the watch will go
directly into the Barometer/Thermometer Mode. Keep Bdepressed until
the auto light switch turns on or off. After that, you can return to the
Timekeeping Mode by pressing D.
Precautions Concerning Simultaneous Measurement of Altitude and
Temperature
Though you can perform altitude and temperature measurements at the same
time, you should remember that each of these measurements requires
different conditions for best results.With temperature measurement, it is best
to remove the watch from your wrist in order to eliminate the effects of body
heat. In the case of altitude measurement, on the other hand, it is better to
leave the watch on your wrist, because doing so keeps the watch at a
constant temperature, which contributes to more accurate altitude
measurements.
The following describes what you should do to give priority to either altitude or
temperature.
• To give altitude measurement priority, leave the watch on your wrist or in
any other location where the temperature of the watch is kept constant.
• To give temperature measurement priority, remove the watch from your
wrist and allow it to hang freely from your bag or in another location where
it is not exposed to direct sunlight.Note that removing the watch from your
wrist can momentarily affect pressure sensor readings.
Battery Power Indicator
The battery power indicator on the display shows you the current status of the
rechargeable battery’s power.
Level
1
2
3
4
Battery Power
Indicator Function Status
All functions enabled.
All functions enabled.
Except for timekeeping and
battery power indicator, all
functions and display indicators
are disabled.
All functions disabled.
Battery power
indicator
(Charge Soon Alert)
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l

—7 —
• The flashing CHARGE indicator at Level 3 tells you that battery power is
very low, and that exposure to bright light for charging is required as soon
as possible.
• At Level 4, all functions are disabled and settings return to their initial
factory defaults. Functions are enabled once again after the rechargeable
battery is charged, but you need to set the time and date, after the battery
reaches Level 2 (indicated by the Mindicator) from Level 4. You will not be
able to set any of the other settings until the battery reaches Level 1
(indicated by the Hindicator) after dropping to Level 4.
• Display indicators reappear as soon as the battery is charged from Level 4
to Level 3.
• Leaving the watch in direct sunlight or some other very strong light source
can cause the battery power indicator to temporarily show a reading that is
higher than the actual battery level. The correct battery power indicator
should appear after a few minutes.
• Even if battery power is at Level 1 or Level 2, the Digital Compass Mode,
Barometer/Thermometer Mode, or Altimeter Mode sensor may be disabled
if there is not enough voltage available to power it sufficiently. This condition
is indicated on the display as shown in the table below. Sensor operation
should resume when battery voltage returns to normal levels.
• If you use the backlight or the alarm a number
of times during a short period, RECOV appears
on the display and the backlight, alarm, hourly
time signal, and sensor operations become
disabled until battery power recovers.
After some time, battery power will recover and
RECOV will disappear, indicating that the
above functions are enabled again.
Mode
Digital
Compass
Barometer/
Thermometer
Altitude
Display Indication for Low
Voltage During
Measurement
Last measured angle
value
Last measured pressure
value
Last measured altitude
Display Indication for
Low Voltage Upon
Entering the Mode
xxx
xxxx
Blank
Charging Precautions
Certain charging conditions can cause the watch to become very hot. Avoid
leaving the watch in the areas described below whenever charging its
rechargeable battery.
Also note that allowing the watch to become very hot can cause its liquid
crystal display to black out. The appearance of the LCD should become
normal again when the watch returns to a lower temperature.
Warning!
Leaving the watch in bright light to charge its rechargeable battery can
cause it to become quite hot. Take care when handling the watch to
avoid burn injury. The watch can become particularly hot when exposed
to the following conditions for long periods.
• On the dashboard of a car parked in direct sunlight
• Too close to an incandescent lamp
• Under direct sunlight
Charging Guide
After a full charge, timekeeping remains enabled for up to about six months,
while the watch is used under the conditions described below.
Operating Conditions
• Watch is not exposed to light
• Display on 18 hours per day, sleep state 6 hours per day
• 1 backlight operation (2 seconds) per day
• 10 seconds of alarm operation per day
• 10 digital compass operations per week
• 10 hours of altimeter measurements, once per month
Recovery Times
The table below shows the amount exposure that is required to take the
battery from one level to the next.
• The above exposure time values are all for reference only. Actual required
exposure times depend on lighting conditions.
Approximate Exposure Time
Level 4 Level 3 Level 2 Level 1
1 hour 15 hours 4 hours
4 hours 76 hours 21 hours
6 hours 124 hours 34 hours
56 hours - - - - - - - - - - - - - - - -
Exposure Level
(Brightness)
Outdoor Sunlight
(50,000 lux)
Sunlight Through a
Window (10,000 lux)
Daylight Through a
Window on a Cloudy
Day (5000 lux)
Indoor Fluorescent
Lighting (500 lux)
▲
▲
▲
• The last measured data may still remain on the display if you enter one of
the sensor modes while RECOV is on the display.
• If RECOV appears frequently, it probably means that remaining battery
power is low. Leave the watch in bright light to allow it to charge.
Reference
This section contains more detailed and technical information about watch
operation. It also contains important precautions and notes about the various
features and functions of this watch.
Sensor Malfunction Indicator
Should the pressure sensor or direction sensor malfunction, the message
Err appears on the display for about two seconds, and then sensor
operation is disabled.
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
Direction
Measurement Barometric
Pressure
Measurements
Altitude
Measurement
• If Err appears while a measurement operation is being performed in a
sensor mode, restart the measurement. If
Err appears on the display
again, it can mean there is something wrong with the sensor. Take the
watch to your original dealer or nearest authorized CASIO distributor for
inspection and maintenance.
• Even if battery power is at Level 1 or Level 2, the Digital Compass Mode,
Barometer/Thermometer Mode, or Altimeter Mode sensor may be disabled
if there is not enough voltage available to power it sufficiently. In this case,
the
Err message appears on the display when you switch to the
Timekeeping Mode. This does not indicate malfunction, and sensor
operation should resume once battery voltage returns to its normal level.
• Even if battery power is at Level 1 or Level 2, the Err message will appear
on the Timekeeping Mode screen if there is not enough voltage available to
power the pressure sensor sufficiently during a barometric pressure
measurement. This does not indicate malfunction, and sensor operation
should resume once battery voltage returns to its normal level.
• The message Err (error) may appear on the display momentarily if you
enter the Timekeeping Mode from one of the sensor modes while
measurement is in progress. Normally, the
Err message appears for just
an instant as the watch cancels the ongoing sensor operation, and it does
not indicate malfunction of the watch or the sensor. However, if the
Err
message remains on the display, it can mean that your watch is
malfunctioning.
Whenever you have a sensor malfunction, be sure to take the watch to
your original dealer or nearest authorized CASIO distributor as soon as
possible.
Charge Times
Exposing the watch to light for the periods shown below each day restores
the power used by the above operating conditions.
• Stable operation is promoted by frequent charging.
Approximate
Exposure Time
5 minutes
24 minutes
48 minutes
8 hours
Exposure Level (Brightness)
Outdoor Sunlight (50,000 lux)
Sunlight Through a Window (10,000 lux)
Daylight Through a Window on a Cloudy Day (5,000 lux)
Indoor Fluorescent Lighting (500 lux)
Auto Return Features
• The watch automatically returns to the Timekeeping Mode if you do not
perform any button operation for two or three minutes in any mode except
for the Stopwatch Mode andAltimeter Mode.
• If you do not perform any button operation while in the Altimeter Mode, the
watch automatically returns to the Timekeeping Mode after nine or 10
hours.
• If you leave a screen with flashing digits on the display for two or three
minutes without performing any operation, the watch automatically saves
anything you have input up to that point and exits the setting screen.
Direct Timekeeping Mode Access
Holding down Dwhile in the Data Recall Mode, Alarm Mode, or Stopwatch
Mode goes directly to the Timekeeping Mode.
• Note that the above does not work while a setting screen (one with flashing
digits, etc.) is on the display.

—8 —
Scrolling
The Eand Bbuttons are used in various modes and setting screens to
scroll through data on the display. In most cases, holding down these buttons
during a scroll operation scrolls through the data at high speed.
Power Saving Function
When turned on, the Power Saving function automatically puts the watch into
a sleep state whenever it is left for a certain period in an area where it is dark.
The table below shows how watch functions are affected by the Power Saving
function.
• Wearing the watch inside the sleeve of clothing can cause it to enter the
sleepstate.
• The watch will not enter the sleep state while the digital time is between
6:00 AM and 9:59 PM. If the watch is already in the sleep state when the
digital time reaches 6:00AM, however, it will remain in the sleep state.
Elapsed Time in
Dark
60 to 70 minutes
6 or 7 days
Display
Blank, with
SLEEP flashing
Blank, with
SLEEP not
flashing
Operation
Display is off, but all functions are
enabled and analog hand
operation is maintained.
All functions are disabled, but
timekeeping (digital and analog)
is maintained.
To recover from the sleep state
Perform any one of the following operations.
• Move the watch to a well-lit area. It can take up to two seconds for the
display to turn on.
• Press any button.
• Angle the watch towards your face for reading.
To turn Power Saving on and off
1. In the Timekeeping Mode, hold down Auntil
the seconds start to flash, which indicates the
setting screen.
2. Press Deight times until the Power Saving
on/off screen appears.
3. Press Eto toggle Power Saving on (
ON ) and
off (
OFF ).
4. Press Ato exit the setting screen.
• The Power Saving on indicator (SAVE) is on
the display in all modes while the Power Saving
is turned on.
• The backlight may not light if the face of the
watch is more than 15 degrees above or below
parallel. Make sure that the back of your hand
is parallel to the ground.
• The backlight turns off in about two seconds,
even if you keep the watch pointed towards
your face.
More than 15 degrees
too high
Digital Compass Precautions
This watch features a built-in magnetic bearing sensor that detects terrestrial
magnetism. This means that north indicated by this watch is magnetic north,
which is somewhat different from true polar north. The magnetic north pole is
located in northern Canada, while the magnetic south pole is in southern
Australia. Note that the difference between magnetic north and true north as
measured with all magnetic compasses tends to be greater as one gets
closer to either of the magnetic poles. You should also remember that some
maps indicate true north (instead of magnetic north), and so you should make
allowances when using such maps with this watch.
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
Backlight Precautions
• The electro-luminescent panel that provides illumination loses power after
very long use.
• The illumination provided by the backlight may be hard to see when viewed
under direct sunlight.
• The backlight automatically turns off whenever an alarm sounds.
• The watch may emit an audible sound whenever the display is illuminated.
This is due to vibration of the EL panel used for illumination, and does not
indicate malfunction.
• Frequent use of the backlight runs down the battery.
• The watch will not enter the sleep state while it is in the Digital Compass
Mode, Barometer/Thermometer Mode,Altimeter Mode, or Stopwatch
Mode. When the watch is left in any mode besides the Stopwatch Mode,
the watch will return to the Timekeeping Mode automatically after a specific
amount of time. Then if left in the dark for the elapsed time indicated in the
table above, the watch will enter the sleep state.
Auto light switch precautions
• Wearing the watch on the inside of your wrist, movement of your arm, or
vibration of your arm can cause frequent activation of the auto light switch
and illumination of the display. To avoid running down the battery, turn off
the auto light switch whenever engaging in activities that might cause
frequent illumination of the display.
• Note that wearing the watch under your sleeve while the auto light switch is
turned on can cause frequent illumination of the display and can run down
the battery.
• Static electricity or magnetic force can interfere with proper operation of the
auto light switch. If the backlight does not light, 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
after you turn the face of the watch towards you. This does not necessarily
indicate malfunction of the backlight.
• You may notice a very faint clicking sound coming from the watch when it is
shaken back and forth. This sound is caused by mechanical operation of
the auto light switch, and does not indicate a problem with the watch.
• Accurate direction readings are impossible while in a train, boat, air plane,
etc.
• Accurate readings are also impossible indoors, especially inside ferro-
concrete structures. This is because the metal framework of such structures
picks up magnetism from appliances, etc.
• Movement of the analog hands during digital compass operation in an area
where terrestrial magnetism is weak can cause the pointer position and
angle value to be slightly off.
Storage
• The precision of the bearing sensor may deteriorate if the watch becomes
magnetized. Because of this, you should be sure to store the watch away
from magnets or any other sources of strong magnetism, including:
permanent magnets (magnetic necklaces, etc.) and household appliances
(TVs, personal computers, washing machines, freezers, etc.)
• Whenever you suspect that the watch may have become magnetized,
perform one of the calibration procedures under “Calibrating the Bearing
Sensor”.
Location
• Taking a direction reading when you are near a source of strong magnetism
can cause large errors in readings. Because of this, you should avoid taking
direction readings while in the vicinity of the following types of objects:
permanent magnets (magnetic necklaces, etc.), concentrations of metal
(metal doors, lockers, etc.), high tension wires, aerial wires, household
appliances (TVs, personal computers, washing machines, freezers, etc.)
Calibrating the Bearing Sensor
Whenever you suspect that direction readings produced by the watch are
wrong, you should calibrate it. You can use either one of two calibration
procedures:
bidirectional calibration or northerly calibration .
Use bidirectional calibration when you want to take readings within an area
exposed to magnetic force. This type of calibration should be used if the
watch becomes magnetized for any reason.
With northerly calibration, you “teach”the watch which way is north (which
you have to determine with another compass or some other means). You
could use this calibration procedure, for example, to set the watch to indicate
true north instead of magnetic north.
Important!
• If you want to perform both bidirectional and northerly calibration, be sure
to perform bidirectional calibration first, and then perform northerly
calibration. This is necessary because bidirectional calibration cancels any
previously set northerly calibration setting.
• The more correctly you perform bidirectional calibration, the better the
accuracy of the bearing sensor readouts. You should perform bidirectional
calibration whenever you change environments where you use the bearing
sensor, and whenever you feel that the bearing sensor is producing
incorrect readings.
Precautions about bidirectional calibration
• You can use any two opposing directions for bidirectional calibration. You
must, however, make sure that they are 180 degrees opposite each other.
Remember that if you perform the procedure incorrectly, you will get wrong
bearing sensor readings.
• Make sure that you do not move the watch while calibration of either
direction is in progress.
• You should perform bidirectional calibration in an environment that is the
same as that where you plan to be taking direction readings. If you plan to
take direction readings in an open field, for example, calibrate in an open
field.
To perform bidirectional calibration
1. Press Cto enter the Digital Compass Mode.
2. Hold down Afor about one second until
x1x
appears on the display, which indicates the
setting screen.
• At this time, the magnetic north pointer
flashes at the 12 o’clock position to indicate
that the watch is ready to calibrate the first
direction.
3. Place the watch on a level surface facing any direction you want, and
press Cto calibrate the first direction.
• “
xxx ”is shown on the display while calibration is being performed. This
changes to
x 2 x
and the magnetic north pointer flashes at the 6 o’cloc
k
position when calibration of the first direction is complete. This means
that the watch is ready for calibration of the second direction.
4. Rotate the watch 180 degrees.
5. Press Cagain to calibrate the second direction.
l
l
l
l
l
l
l
l
l
l
l

—9 —
• “ xxx ”is shown on the display while calibration is being performed.The
Digital Compass Mode screen (showing the angle value) appears when
calibration is complete.
• Note that the calibration operation will not start if you press Cif the
seconds count of the Timekeeping Mode time is in the vicinity of 00, 20, or
40.If “
xxx ”does not appear when you press C, wait a few seconds and
then try again.
• If “ xxx ”appears and then changes to Err (error) on the calibration
screen, it means that there is something wrong with the sensor.Press Ato
return to the Digital Compass Mode screen and then try starting the
calibration operation again.If
Err keeps appearing, contact your original
dealer or nearest authorized CASIO distributor to have the watch checked.
To perform northerly calibration
1. While in the Digital Compass Mode, hold
down Afor about one second until
x 1 x
appears on the display, which indicates the
setting screen.
2. Press D to start the northerly calibration
procedure.
• At this time, x N x (north) appears on the
display.
3. Place the watch on a level surface, and position it so that its 12 o’clock
position points north (as measured with another compass).
4. Press Cto start the calibration operation.
• “ xxx ”is shown on the display while calibration is being performed.The
Digital Compass Mode screen appears (with 0
° indicated as the angle
value) when calibration is complete.
l
l
l
l
l
l
l
l
l
l
l
• Note that the calibration operation will not start if you press Cif the
seconds count of the Timekeeping Mode time is in the vicinity of 00, 20, or
40.If “
xxx ”does not appear when you press C, wait a few seconds and
then try again.
• If “ xxx ”appears and then changes to Err (error) on the calibration
screen, it means that there is something wrong with the sensor.Press Ato
return to the Digital Compass Mode screen and then try starting the
calibration operation again.If
Err keeps appearing, contact your original
dealer or nearest authorized CASIO distributor to have the watch checked.
To calibrate the temperature sensor
1. Press Bto enter the Barometer/
Thermometer Mode.
2. Hold down Auntil
OFF or xxx starts to
flash in the upper part of the display.This is
the setting screen.
• If the temperature sensor was previously
calibrated,
xxx will be replaced by a
temperature value in a few seconds.
• After about four or five seconds, the lower
part of the display will show
OFF or a
barometric pressure value (if set).
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
Calibrating theTemperature Sensor
The temperature sensor of this watch is calibrated at the factory before
shipment, and further adjustment is normally not required. If you notice
serious errors in the temperature readings produced by the watch, you can
calibrate the sensor to correct the errors.
Important!
Incorrectly calibrating the temperature sensor can result in incorrect readings.
Carefully read the following before doing anything.
• Compare the readings produced by the watch with those of another reliable
and accurate thermometer.
• If adjustment 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.
3. Press E(+) or B(–) to change the displayed temperature by 0.1
° C.
• Pressing Band Eat the same time returns to the factory calibration
(
OFF ).
4. Press Ato return to the Barometer/Thermometer Mode screen.
Calibrating the Barometric Pressure Sensor
The pressure sensor of this watch is calibrated at the factory before shipment
and further adjustment is normally not required. If you notice serious errors in
the barometric pressure readings produced by the watch, you can calibrate
the sensor to correct the errors.
Important!
Incorrectly calibrating the barometric pressure sensor can result in incorrect
readings.Before performing the calibration procedure, compare the readings
produced by the watch with those of another reliable and accurate barometer.
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
To calibrate the pressure sensor
1. Press Bto enter the Barometer/
Thermometer Mode.
2. Hold down Auntil
OFF or xxx starts to
flash in the upper part of the display.This is
the setting screen.
• If the temperature sensor was previously
calibrated,
xxx will be replaced by a
temperature value in a few seconds.
• After about four or five seconds, the lower
part of the display will show
OFF or a
barometric pressure value (if set).
3. Press D to move the flashing to the pressure
sensor calibration setting.
• At this time, OFF or the barometric pressure value should be flashing on
the display.
• If OFF or the pressure value does not appear at this time, press Ato
return to the Barometer/Thermometer Mode screen, and perform step 2
again.
4. Press E(+) or B(–) to change the displayed barometric pressure by 1
hPa.
• Pressing Band Eat the same time returns to the factory calibration
(
OFF ).
5. Press Ato return to the Barometer/Thermometer Mode screen.

—10 —
3. DRAWINGS: MODULE QW-2766
3-1. LCD DIAGRAM
SEG.COM. SEG.COM.
L 3
L 4
L 5
L 6
L 7
L 8
L 9
L10
L11
L12
L13
L14
L15
L16
L17
L18
L19
L20
L21
L22
L23
L24
L25
L26
L27
L28
L29
L31
L32
L33
L34
L35
L36
L37
L48
L49
L50
L51
L52
L53
L54
L55
LC1 LC2 LC3 LC4 LC5 L30
f8
a8
b8
f7
b7
f6
b6
alm
m16
m21
c0
e0
c1
e1
c2
g2
c3
g3
col1
c4
g4
c5
g5
c12
g12
m36
m41
m46
m51
m56
f11
a11
f10
g10
b10
g9
b9
h7
a7
deg0
a6
sig
m15
m22
d0
ft
d1
m
d2
e2
d3
e3
point1
d4
e4
m6
m7
m8
m9
m10
m11
m12
m13
m14
m23
m24
max
m25
inhg
m26
hpa
m27
m28
high
m29
m30
d5
e5
d12
e12
m35
m42
m45
m52
m55
h11
h10
a10
l10
f9
a9
m31
middle
m32
m33
m34
m43
m44
m53
m54
m59
m0
m1
m2
m3
m4
m5
LC1 LC2 LC3 LC4 LC5
point0
d8
c8
e7
d7
d6
c6
m18
m19
a0
f0
a1
f1
a2
deg1
a3
save
baro
a4
comp
a5
alti
a12
pm
m38
m39
m48
m49
m58
autolight
d11
k11
c11
i10
d10
d9
e8
g8
hyp0
g7
c7
e6
g6
m17
m20
b0
g0
b1
g1
b2
f2
b3
f3
recover
b4
f4
b5
f5
b12
hyp1
m37
m40
m47
m50
m57
e11
g11
j11
b11
e10
c10
col0
e9
c9
sleep
low-charge
a11
f11
g11
e11
d11
k11
j11
save
autolight
sleep
recover
alm
sig
m0 m1 m2 m3 m4
m5
m6
m7
m8
m9
m10
m11
m12
m13
m14
m15
m16
m17
m18
m19
m20
m21
m22
m23
m24
m25
m26
m27
m28
m29
m30
m31
m32
m33
m34
m35
m36
m37
m38
m39
m40
m41
m42
m43
m44
m45
m46
m47
m48
m49
m50
m51
m52
m53
m54
m55
m56 m57 m58 m59
baro
comp
alti
a0
f0 g0 b0
c0
d0
e0
h7
f7
g7
b7
c7
d7
e7
a8
f8
g8
b8
c8
d8
e8
f9
g9
b9
c9
d9
e9
l10
f10
g10
b10
c10
d10
e10
b11
c11
h11 a10
i10
a9 a7
deg0
hyp0
point0
col0
a6
b6
c6
d6
e6
g6
f6
a1 b1
c1
d1
e1 g1
f1
a12
b12
c12
d12
e12
g12
a2
f2
g2
b2
c2e2
d2
a3
f3
g3
b3
c3e3
d3
a4
f4
g4
b4
c4e4
d4
a5
f5
g5
b5
c5e5
d5
pm
hyp1 col1
point1 hpa
inhg
max
low-charge
middle high
m
ft
deg1
h10
LC5 LC4 L55 L54 L53
L 3 L 4 L 5 L 6 L 7 L 8 L 9 L10 L11 L12 L13 L14 L15 L16 L30 L28 L29 L27 L26 L25 L24 L23 L22 L21 L20 L19 L17 L18
L37 L36 L35 L34 L33 L32 L31 LC3 LC2 LC1 L48 L49 L50 L51 L52

— 11 —
3-2. CIRCUIT DIAGRAM
✽ 9. L28~L30 are used as the static drive pins. ✽ 10. L1~L2 are used as the motor drive pins. ✽ 11. CSB is used as the SCUT pin. ✽ 12. The EEPROM of this module is write-protected, therefore is not writable. When WP is HIGH, EEPROM is write-protected. When WP is LOW, EEPROM is writable.
✽ 1. No bonding ✽ 2. GND-KI7: Open (No Soldering) ✽3. Latch type key ✽ 4. Short (Soldering) (R, N trimming) ✽ 5. Inclination sensor ✽ 6. GNDB is used for the bias on the back of the tip. ✽ 7. PIN name ✽ 8. Soldering short after the test
LCD (2.8V 1/3b 1/5d)
GND VDD2 VCH
VDD3
VC1 VC2
VDD1
BD
VDSP
VC3 VC4 VHF
VSC
C1
C3C5 C2C4C7
C6
BAT
C8
LL1
Tr1
PZ
Di1
SC
C9
Z
Di2 R1
L
CLF1
E'
L+ VOUT L– GND CLF2
V+
C11
EL LL2
BACK
FRONT
R3
GNDB
ELD
Xtal
CT
S2 SA S1 S3
SK
S5 S4
XTB LD1 XT T1 T2 T3 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI9 AC T4 R1 R2 R3 N1 N2
L3 - - - - L55 LC1 - - - LC5 SDO SCK CSBSDI
An.B1
L1 L2
EEPROM C10
Tr2
R17
VCCE SCLSDA WP VSS A1A2 A0
SDA WPSCL VCC
SCR SCIN
KI8
KC4 KC3 KC2 KC1
VPM
R5R4
C12
SDI SDO SCK T1 CSB T2 TEST CS
VADX VREF1VADY
SN5
VTHVAN
VREF4SN6
VREF2
VOS
GND VDD2
ISNS IREF1SN3 SN4
IREF2 L1 L2 VM1 VM2 SN7 CF CR OSC1 OSC3 OSC4 OSC6
C13
RTH C14
R6 R7
R8 R9
R10
4
3
2
1
C15 C16 C17
R11
R12 R13
Di3
R14
R16
SX
L1
SY
L2
GND
R15
MIS
MIC
LSI (NEW SOI)
TOTAL 106PINS
BONDING 105PINS LSI2 (Sensor Tip)
TOTAL 36PINS
BONDING 36PINS
✽3
✽2
INV
✽4 ✽4 ✽4
✽3 ✽3
✽3
✽5
+
PS
✽8 ✽8 ✽8 ✽8
✽9
✽7✽7
✽3
✽10 ✽11
✽4
✽4✽3
✽3
✽1
✽8
✽12
✽6
✽7
✽7

—12 —
3-3. CHECKING TERMINALS AND COMPONENTS
Top view of P.C.B. ass'y Bottom view of P.C.B. ass'y
Capacitor/Chip
Capacitor/Chip
Capacitor/Chip
Capacitor/Chip
Capacitor/Chip
Capacitor/Chip
Capacitor/Chip
Capacitor/Chip
Capacitor/Chip
Capacitor/Chip
Capacitor/Chip
Capacitor/Chip
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
Capacitor/Chip
Capacitor/Chip
Capacitor/Chip
Capacitor/Chip
Capacitor/Chip
4. Capacitor/Trimmer
(1001 0950)
Diode
Diode
Diode
Inverter
Coil
C13
C14
C15
C16
C17
CT
Di1
Di2
Di3
INV
LL1
Coil
Thermistor/Chip
Resistor/Chip
Resistor/Chip
Resistor/Chip
Resistor/Chip
Resistor/Chip
Resistor/Chip
Resistor/Chip
Resistor/Chip
Resistor/Chip
Resistor/Chip
LL2
RTH
R1
R4
R5
R6
R7
R8
R9
R10
R11
R12
Resistor/Chip
Resistor/Chip
Resistor/Chip
Transistor
Transistor
13. Oscillator/Crystal
(7110 6323)
Varistor
7. Cushion/506
(7211 9631)
8. Cushion/6
(7211 0064)
16. Sensor/Tilt
(7105 5275)
R14
R16
R17
Tr1
Tr2
Xtal
Z
KI1
L2 L1
KI9 GND
SD0 SCK CSB SDI
VSC
GND
KI7
KI3
KI5
KI6
GND
GND
VDD2
VDD2
GND
R1
GND
N2
GND
N1
GND GND
R2 R3
KI4
KI2
VOUT
KI8 KC1 KC2 KC3
IREF1
SN3
ISNS
KI3
KI2
KI6
L-
L+
VSCVDD2
CLF1CLF2
VCC
CSB
VDD2
VCC
GND
SDO
LD1
VCC
WP
GND
KI4
AC
VC1
SN4
VCH
OSC4
OSC6
VADY
VADX
GNDVAN
VAN
SN6
SN5
VTH GNDIREF1
CR
GND
CF
SY VM2
VADX
VREF2
SN7
GND
SN7 SY
SX
GND IREF2
SX
SN7
VAN
VADX
VREF1
SN6
SN5
VSCGND
SCINGND
GND SCIN
GNDBGND
VDD2
VCC
WP
VSC
SCK
SCR SCIN
VC2 VC1
VC4VC3
GND
VCH
GND
VDD3VDD1
GND
GND
VDSP
VHF
GND
L
GND
VDD2
VDD2
BDB
BDBDB
BDB L
LGND
VDD2
GND
GND
XT
XTB
XT
VDSP
KI5
KI6
L+
VDD2CLF2
GND
L-
LD1 CLF1
VOUT
VOUT
GND
GND
GND
GND
VCCWPSCKSDO
OSC3
GND
VDD2
KI9
KI5
KI1
L2 L1
L
GND
GND
VM1
L2
L1
SX
SY
VAN
VAN
OSC1
C15
C14 C13 R15
R12
R10Di3
Di1
Di2
Xtal INV
C11
C10 LL2
LL1
R17
EEPROM
8
Tr1
R16 C16 R13
R11
R14 C17
RTH
R6R7
R5
C8
C2 R4
Z
C3C7C4
CT
R1
C6
C12
C9 R8
C1
R9
R3 C5
An.B1
77
Tr2
16

—13 —
4. EXPLODED VIEW: MODULE QW-2766
1 (1011 8098)
2 (1011 8094)
23 (1011 8085)
18 (1011 8083)
20 (1011 8097)
19 (1011 8096)
9 (1011 7191)
24 (7211 9045)
17 (1013 4221)
20 (1011 8097)
10 (1011 8086)
11 (1011 8095)
14 (7227 0252)
12 (1006 5664)
21 (7201 9599)
(1006 5657)
Battery Strage (CTL1616)
22 (7224 0652)
6 (1008 3365)
3 (7640 6645)

— 14 —
EXPLODED VIEW: ANALOG BLOCK MODULE QW-2766
5 (1011 4986)
25 (7227 0273)
25 (7227 0273)
15 (1007 4152)

5. PARTS LIST: MODULE QW-2766
Note: 1. Prices and specifications are subject to change without prior notice.
2. Spare parts are classified as follows according to their importance in after-sales service.
A Rank ---------------------------------------- Very Important
B Rank ---------------------------------------- Important
C Rank ---------------------------------------
-
Less important
3. Batteries in Bulk pack on the tray will be supplied from our Overseas Spare Parts Section under charge basi
s
Batteries in Blister pack will be supplied from our Sales Department.
4. As for order/supply of spare parts, refer to the separate publication "GUIDE BOOK for spare parts supply".
Item Code No. Parts Name Specification Applicable Q R
1011 7653 MODULE
(
WITH MOVEMENT
)
QW-2766YCSA-01 PRG-60TJ-7A 1 A
1 1011 8098 LCD S2766-11THP QW-2767YCSA-01 1A
2 1011 8094 EL YEL-2766-A-00 QW-2767YCSA-01 1A
3 7640 6645 ANALOG BLOCK QW-2766MV-82TKTK QW-2767YCSA-01 1A
4 1001 0950 CAPACITOR/TRIMMER CTZ2E-30C-W2-P QW-2767YCSA-01 1B
5 1011 4986 COIL ASS'Y Q372786*1 QW-2767YCSA-01 1A
6 1008 3365 CONTACT/BATTERY
(
-
)
1673 Q358740A-2 QW-2767YCSA-01 1C
7 7211 9631 CUSHION/506 Q49364-1 QW-2767YCSA-01 2C
8 7211 0064 CUSHION/6 Q4914A-1 QW-2767YCSA-01 1C
9 1011 7191 HOLDER/BATTERY Q255819B-2 QW-2767YCSA-01 1C
10 1011 8086 HOLDER/HOUR WHEEL Q373353-1 QW-2767YCSA-01 1C
11 1011 8095 INTERCONNECTOR Q471374-1 QW-2767YCSA-01 2C
12 1006 5664 LABEL 2368 Q468543A-1 QW-2767YCSA-01 1C
13 7110 6323 OSCILLATOR/CRYSTAL DT-26S11 QW-2767YCSA-01 1B
14 7227 0252 SCREW Q431332-1 QW-2767YCSA-01 3B
15 1007 4152 SCREW Q469210-1 QW-2767YCSA-01 1C
16 7105 5275 SENSOR/TILT TS-2418-P QW-2767YCSA-01 1B
17 1013 4221 SHEET/INSULATION RJQ515739-001V01 QW-2767YCSA-01 1C
18 1011 8083 SPRING/COIL Q471486-1 QW-2767YCSA-01 2B
19 1011 8096 SPRING/COIL Q471485-1 QW-2767YCSA-01 2B
20 1011 8097 SPRING/COIL Q471487-1 QW-2767YCSA-01 2B
21 7201 9599 SPRING/COIL Q430081-1 QW-2767YCSA-01 1B
22 7224 0652 WASHER Q421691-1 QW-2767YCSA-01 1C
23 1011 8085 WHEEL/HOUR Q372705A-1 QW-2767YCSA-01 1C
24 7211 9045 SHEET/INSULATION Q45482-1 QW-2767YCSA-01 1 C
25 7227 0273 SCREW Q436969-1 QW-2767YCSA-01 2C
1006 5657 BATTERY/STORAGE CTL1616 QW-2767YCSA-01 1B
For the
p
rices and minimum order/su
pp
l
y
q
uantities of the above
p
arts, refer to the Parts Price List P.P.L.-603.
Notes: Q - Used quantity
R - Rank — 15 —

—16 —
6. PRECAUTIONS FOR REPAIR: MODULE QW-2766
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE
1. Perform AC (ALL CLEAR) when inserting a new battery, or else the memories and or counters may
give erratic displays.
Touch the AC contact and the main plate with the metallic tweezers.
The contact should be made for about two seconds.
For 2 seconds after the AC operation, do not make any button operations on these modules.
Metallic tweezers
2. Removing of the module from the case
A. Remove the screw and sensor cable holder. B. Remove the sensor cable.
Sensor cable holder Sensor cable
C. Insert the precision screw driver between the module and the case then remove the module.

—17 —
6-2. ACCURACY CHECKING
Check the accuracy of the module with the quartz timer after switching the module to “ACCURACY
CHECKING MODE”.
The operations are shown below:
A) SWITCHING TO “ACCURACY CHECKING MODE”
While pressing the A button, press Dand Ebuttons at the normal timekeeping mode.
B) CANCELLATION OF THE “ACCURACY CHECKING MODE”
Press any button except for E.
NOTE: The “ACCURACY CHECKING MODE”will automatically
return to the regular mode in 1 ~ 2 hour (s) without any
operation.
3. Removing of the sensor
A. Remove the 2 screws and decorative piece. B. Remove the 2 screws and sensor plate.
Decorative piece Sensor plate
C. Remove the O-ring for sensor and sensor.
Never replace the module (PCB ass'y) or the sensor alone.
Because the matching of the module and sensor has been adjusted in the factory production
line.
Sensor
O-ring for sensor
QW-2766
A
C
E
B
D
L

—18 —
6-3. SOLAR CELL-PCB ASS'Y CONTACT CHECKING
Check a Solar cell and PCB ass'y are contacted correctly by contact spring, when a module is
disassembled.
1. To enter TEST mode.
1) While pressing down Abutton, press Band Ebuttons within two seconds.
2. Check a Solar cell and PCB ass'y contact in the following order.
1) Turn the display side up and place the watch in a light place (in a normal environment) for five
seconds.
2) Check the display indicates as figure 3.
3) Turn the display side down and place the watch on the desk for five seconds.
4) Turn the didplay side up again and check the display indicates “SLEEP”as figure 4.
Note: “SLEEP”disappears after the display side is turned up and recognizes the light for a few
seconds.
3. To exit from TEST mode.
Press Dbutton.
Figure 4
Figure 3
(The display is faded away)
Timekeeping Mode Figure 1
TEST Mode
(The display is faded away)
Figure 2