(WITHOUT PRICE)
SERVICE MANUAL
& PARTS LIST
REF. NO. S/M-592
MARCH 1998
QW-1845
MODULE NO.
R
DW-9200K
INDEX
- 1 -
CONTENTS
1. SPECIFICATIONS : QW-1845
1. SPECIFICATIONS · · · · · · · · · · · · · · · · · · · · · · · · · · 1
2. OPERATION CHART · · · · · · · · · · · · · · · · · · · · · · · · 2
3. DRAWINGS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 4
3-1. BLOCK DIAGRAM · · · · · · · · · · · · · · · · · · · · · · · · 4
3-2. CHECKING TERMINALS AND COMPONENTS · · · · 5
4. EXPLODED VIEW · · · · · · · · · · · · · · · · · · · · · · · · · · 6
5. PARTS LIST · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 7
6. PRECAUTIONS FOR REPAIR · · · · · · · · · · · · · · · · · · 8
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE · · 8
6-2. ACCURACY CHECKING · · · · · · · · · · · · · · · · · · · 8
Item
Detail
Item
Detail
Battery
CR2016
Accuracy
±15sec./month
Battery life
Approx. 24 months
Accuracy setting system Trimmer capacitor
Current consumption
3.98
µA maximum
Accuracy checking
See page 8
Alarm system
Piezo plate on Back cover
Accuracy setting
+0.25~+0.35sec./day
Function
· Shock resistant (G-SHOCK)
· Electro-luminescent backlight
Auto light switch
· 30pages of Telememo
8 letters and 12 numbers per page
Other: Auto sort function
· 1/100 sec. stopwatch
Measuring capacity: 23:59'59.99"
Measuring mode: Elapsed time, split time, 1st-2nd place times
· Countdown alarm
Input range: 1 sec. to 24 hr.
Unit: 1 sec.
Auto-repeat function
· Regular timekeeping: Hr, min, sec, pm, yr, mo, date, day
· Auto-calendar (pre-programmed until the year 2039)
· 5 multi-function alarms
· Hourly time signals
· 12/24-hour formats
- 2 -
2. OPERATION CHART : QW-1845
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 turning the face of the watch towards you. This does not necessarily indicate
malfunction of the backlight.
To switch the auto light switch function on and off
In the Timekeeping Mode, hold down
for one or two seconds to turn the auto light
switch function on and off.
The Telememo Mode lets you store up to 30 pairs
of name and telephone number data. The name
can be up to 8 characters long and the number up
to 12 digits. Data is automatically sorted into
alphabetical order based on the name data. You
can recall data by scrolling through it on the display.
TELEMEMO MODE
Caution
The following causes all data stored in memory to be deleted. Be sure to always
keep separate written copies of all important data.
Malfunction or repairs
Dead battery
Battery replacement
In no event will CASIO be liable for loss of data or any damages arising out of
such loss.
The auto light switch indicator is shown on the display in all modes while the auto light
switch function is on.
In order to protect against running down the battery, the auto light switch function is
automatically turned off approximately three hours after you turn it on. Repeat the
above procedure to turn the auto light switch function back on if you want.
Pressing
while in the Timekeeping Mode illuminates the display, regardless of the
auto light switch's on/off setting.
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 where there is the danger of
accidents, especially in locations 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 light switch 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 light switch can create a
distraction, which can result in a traffic accident and serious personal injury.
Parallel to ground
More than 15 degrees too
high
More than 15 degrees
too low
Parallel to ground
40
°
TIMEKEEPING MODE
To set the time and date
1. Hold down
until the seconds digits start to
flash on the display. The seconds digits flash
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, it is 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.
4. While any other digits (besides seconds), are selected (flashing), press
to
increase the number or
to decrease it. Holding down either button changes the
current number at high speed.
While the 12/24-hour setting is selected, press
to switch between the two formats.
5. After you set the time and date, press
to return to the Timekeeping Mode.
The day of the week is automatically set in accordance with the date.
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.
Seconds
Minutes
Hour
PM indicator
Day of week
Month Day
Hour
Seconds
Minutes
Month
Day
Year
12/24-Hour Format
Press
Press
GENERAL GUIDE
If the contents of the display seem to be continually changing, see "AUTO DISPLAY FUNCTION" for information on how to stop it.
Press
to change from mode to mode. After you perform an operation in any mode, pressing
returns to the Timekeeping Mode.
In the Timekeeping, Stopwatch, or Countdown Alarm Mode, press
to illuminate the display for about two seconds.
Timekeeping Mode
Telememo Mode
Alarm Mode
Stopwatch Mode
Countdown Alarm Mode
ABOUT THE BACKLIGHT
About the Auto Light Switch Function
When the auto light switch 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 light switch to operate when not needed,
which shortens battery life.
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.
Auto light switch
indicator
Hold down
ON
OFF
(Hyphen)
0 to 9
(Space)
Press
Press
4. After you select the character you want, press
to advance the cursor to the right.
Repeat steps 3 and 4 until you complete name input.
You can input up to 8 characters in the name area.
5. After the name input is through, use
to move the cursor to the number area.
6. While the cursor is in the number area, use
or
to input a number you want. The
character changes in the following sequence. Holding down either button changes
the character at high speed.
A to Z
0 to 9
(Space)
··
·
/
Press
Press
To input Telememo data
1. In the Telememo Mode, press
or
until the
new data display appears.
If the message "FULL" appears on the display, it
means that memory is full. To store more data,
you will first have to delete some of the data.
2. Hold down
until the flashing cursor appears on
the name area.
3. Use
or
to input a character at the cursor
position. The character changes in the following
sequence. Holding down either button changes
the character at high speed.
Name area
Number area
- 3 -
Note that you must input at least one character in the name area. You can skip input
of telephone number.
7. After you select the character you want, press
to advance the cursor to the right.
Repeat steps 6 and 7 until you complete number input.
8. After inputting the data you want, press
to store it into memory.
The name area shows only 5 characters, but automatically scrolls from right to left
to show all of the characters that make up the text.
To scroll through Telememo data
In the normal Telememo Mode (when the display is not flashing), press
to scroll
forward or
to scroll backward through stored data.
The data item that is displayed when you exit the Telememo Mode will be the first
data to appear when you enter the Telememo Mode again.
To edit Telememo data
1. In the Telememo Mode, use
and
to scroll through the data items and display
the one you want to edit.
2. Hold down
until the flashing cursor appears on the display.
3. Use
to move the cursor to the character you want to change.
4. Use
or
to select the character you want.
For details, see "To input Telememo data" (steps 3 through 4 for name input, or 6
through 7 for number).
5. After editing the data, press
to store it.
To delete Telememo data
1. In the Telememo Mode, use
and
to scroll through the data items and display
the one you want to delete.
2. Hold down
until the flashing cursor appears on the display.
3. Press
and
at the same time to delete the data item.
At this time the cursor appears on the display ready for input.
4. Input data or press
to return to the Telememo Mode.
To check remaining memory capacity
In the Telememo Mode, hold down
and
to display remaining memory capacity.
ALARM MODE
You can set five independent alarms with the hour,
minutes, month and day. Use the Alarm Mode to
turn the alarm and the Hourly Time Signal on and
off.
When an alarm is turned on, an alarm tone sounds
for 20 seconds when the preset time is reached.
When the Hourly Time Signal is turned on, the
watch beeps every hour on the hour.
Alarm types
The types of alarm you get depends on the informa-
tion you set.
Hour
Minutes
Alarm No.
Mode indicator
Month Day
AUTO DISPLAY FUNCTION
The Auto Display function of this watch continually changes the contents of the display.
Note that you cannot use any of the watch's other functions while the Auto Display
function is operating.
To turn the Auto Display on
Hold down
for about two or three seconds in any mode until the watch beeps.
To turn the Auto Display off
Hold down
for about two or three seconds until the watch beeps. At this time the
watch is in the Timekeeping Mode.
Note
The Auto Display function cannot be performed while you are making settings (i.e.
while digits or other setting are flashing on the display.
Auto repeat on indicator
1. Hold down
while in the Countdown Alarm
Mode until the hours digit flashes on the display.
2. Press
to switch auto repeat on and off.
3. Press
to return to the Countdown Alarm Mode.
When the end of the countdown is reached while
auto repeat is on, the alarm sounds, but the
countdown restarts from the beginning without
stopping. You can stop the countdown by press-
ing
and manually reset to the start time by
pressing
.
2. Press
to change the selection in the following sequence.
3. Press
to increase the selected number. Holding down
changes the number at
high speed.
To set the starting value of the countdown time to 24 hours, set to "0:00 00".
4. After you set the countdown time, press
to return to the normal Countdown Alarm
Mode (the flashing stops).
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 normal Countdown Alarm Mode
automatically.
To use the countdown timer
1. Press
while in the Countdown Alarm Mode to start the countdown timer.
2. Press
again to stop the countdown timer.
You can continue countdown timer operation by pressing
.
3. Stop the timer and then press
to reset the countdown time to its starting value.
When the end of the countdown is reached and auto repeat timing is off, the alarm
sounds for 10 seconds or until you stop the alarm by pressing any button. Countdown
timing stops, and the countdown time is automatically reset to its starting value after
the alarm stops.
To switch auto repeat timing on and off
Minutes
Hours
Seconds
The countdown timer can be set within a range of 1
second to 24 hours. When the countdown reaches
zero, an alarm sounds for 10 seconds or until you
press any button.
Note that you can also select auto repeat timing that
automatically restarts the countdown from the origi-
nal value you set whenever zero is reached. This
continues until you manually stop the countdown.
To set the countdown time
1. Hold down
while in the Countdown Alarm
Mode until the hours digit flashes on the display.
The hours digit flashes because it is
selected.
Mode indicator
Hours
Minutes
Seconds
1/10 second
To record split times
1. Press
to start the stopwatch.
2. Press
to display the timing up to that point. Stopwatch timing continues internally.
At this time, the display also shows "SPLIT" indicating that the split time is being
recorded.
3. Press
to clear the split time and to continue time measurement on the display.
You can repeat step 2 and 3 as many times as you want.
4. Press
to stop the time measurement.
5. Press
to clear the stopwatch to all zeros.
To time first and second place finishes
1. Press
to start the stopwatch.
2. Press
when the first finisher crosses the line, and record the time.
3. Press
when the second finisher crosses the line.
4. Press
to display the finishing time of the second finisher.
5. Press
again to clear the stopwatch to all zeros.
COUNTDOWN ALARM MODE
STOPWATCH MODE
The Stopwatch Mode lets you measure elapsed
time, split times, and two finishes. The range of the
stopwatch is 23 hours, 59 minutes, 59.99 seconds.
To measure elapsed time
1. Press
to start the stopwatch.
2. Press
to stop the stopwatch.
You can resume the measurement operation by
pressing
again.
3. Press
to clear the stopwatch to all zeros.
Mode indicator
Hours
Minutes
Seconds
1/100 second
Alarm on indicator
Hourly Time Signal on indicator
4. Press
to increase the number or
to decrease it. Holding down either button
changes the current number at high speed.
To set an alarm that does not include a month (daily alarm, monthly alarm), set
for
the month. Press
or
until the
mark appears (between 12 and 1) while the
month digits are flashing.
To set an alarm that does not include date (daily alarm, 1-month alarm), set
for the
day. Press
or
until the
mark appears (between 31 and 1) while the day digits
are flashing.
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 or afternoon.
5. 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 stop the alarm
Press any button to stop the alarm after it starts to sound.
To set the alarm time
1. Press
while in the Alarm Mode to select Alarm 1 through Alarm 5.
2. After you select an alarm, hold down
until the hour digits start to flash on the
display. The hour digits flash because they are
selected.
At this time the alarm is automatically switched on.
3. Press
to change the selection in the following sequence.
Hourly Time Signal
Alarm 1
Alarm 2
Alarm 3
Alarm 4
Alarm 5
Hour
Minutes
Day
Month
To set a Daily Alarm
Set the hour and minutes for the alarm time. Set
for the month and
for the day
(see step 4 under "To set the alarm time"). This type of setting causes the alarm to
sound every day at the time you set.
To set a Date Alarm
Set the month, day, hour and minutes for the alarm time. This type of setting causes
the alarm to sound at the specific time, on the specific date you set.
To set a 1-Month Alarm
Set the month, hour and minutes for the alarm time. Set
for the day (see step
4 under "To set the alarm time"). This type of setting causes the alarm to sound every
day at the time you set, only during the month you set.
To set a Monthly Alarm
Set the day, hour and minutes for the alarm time. Set
for the month (see step 4
under "To set the alarm time"). This type of setting causes the alarm to sound every
month at the time you set, on the day you set.
To switch an alarm and Hourly Time Signal on and off
1. In the Alarm Mode, press
to select an alarm or the Hourly Time Signal.
2. When the alarm or Hourly Time Signal you want to is selected, press
to switch it
on and off.
If any alarm is on, the Alarm on indicator is shown on the display when you change
to another mode.
To test the alarm
Hold down
while in the Alarm Mode to sound the alarm.
- 4 -
3. DRAWINGS : QW-1845
3-1. BLOCK DIAGRAM
45C1
43C1
43C2
43C3
46C1
46C2
46C4
40C4
46C5
46C3
47
C1
C5
325
52
45C2
44C2
42C2
42C1
45C3
44C4
44C5
45C4
45C5
43C5
44C3
42C3
42C4
41C5
43C4
42C5
41C4
41C3
38C3
38C4
38C5
39C4
39C5
37C5
37C4
35C3
32C3
32C4
32C5
35C4
35C5
36C4
36C5
34C5
34C4
31C4
33C4
33C5
31C5
29C3
29C4
29C5
28C4
30C4
30C5
28C5
40C1
40C2
40C3
41C1
41C2
39C3
39C2
37C1
37C2
37C3
38C1
38C2
36C3
36C2
34C1
34C2
32C2
34C3
35C1
35C2
33C3
33C2
26C1
39C1
31C1
32C1
36C1
33C1
26C2
26C3
31C2
31C3
30C2
30C1
27C1
30C3
27C2
27C3
29C1
29C2
28C3
28C2
L3
L4
L5
L6
L7
L8
L9
L10
L11
L12
L13
L14
L15
L16
L17
L18
L19
L20
L21
L22
L23
L24
L25
LC1
LC2
LC3
LC4
LC5
L52
L51
L50
L49
L48
L47
L46
L45
L44
L43
L42
L41
L40
L39
L38
L37
L36
L35
L34
L33
L32
L31
L30
L29
L28
L27
L26
T1
AC
BD2
VDD
XTB
Xtal
CT
XT
N1
N2
N3
N4
C4
BAT
KI1
KI2
KI6
KI5
KI7
KI8
KC4
KC3
KC2
KC1
KI3
KI4
BD1
LL1
LD
VCCE
RT2
LL2
Di
EL
RT1
ENB
VCPE
CIL
ELD
GND
R
C6
VSS2
INV
LC1~LC5
L1~L52
VCH
VSS1
VSS3
LSI
TOTAL
BONDING
87PINS
83PINS
VC VCC
PZ
Tr
C1
C5
+
C2
C3
SL
SK
S2
S3
S1
1
1. Not used.
2. Open (No soldering).
4. Open (No soldering).
1
2
4