Casio GS-310 Troubleshooting guide

SERVICE MANUAL
& PARTS LIST
(WITHOUT PRICE)
QW-2339
MODULE NO.
R
REF. NO. S/M-716
OCT. 2000
GS-310

CONTENTS
Page
1. SPECIFICATIONS: MODULE QW-2339 ....................................................... 1
2. OPERATION CHART: MODULE QW-2339 .................................................. 2
3. DRAWINGS: MODULE QW-2339
3-1. BLOCK DIAGRAM ............................................................................................ 5
3-2. CHECKING TERMINALS AND COMPONENTS: MODULE QW-2339 ............ 6
4. EXPLODED VIEW: MODULE QW-2339 ....................................................... 7
5. PARTS LIST: MODULE QW-2339 ................................................................ 8
6. EXPLODED VIEW: ANALOG BLOCK (C-15.5) OF QW-2339 ..................... 9
7. PARTS LIST: ANALOG BLOCK OF QW-2339 .......................................... 10
8. PRECAUTIONS FOR REPAIR: MODULE QW-2339
8-1. AC (ALL CLEAR) AND REMOVING OF MODULE ........................................ 11
8-2. ACCURACY CHECKING ................................................................................ 11

— 1 —
1. SPECIFICATIONS: MODULE QW-2339
Battery CR1616
Battery life Approx. 2 years
Current consumption 0.962 µA maximum
Alarm system Piezo plate on Back cover
Accuracy ±15 sec./month
Accuracy setting system Trimer capacitor
Accuracy checking See page 11
Functions: • Shock resistant (G-SHOCK)
• "ANTIMAGNETIC" watch (ISO)*
• Electro-luminescent backlight
Auto light switch, afterglow
• World time
29 time zones (27 cities), city code display, daylight saving on/off
• 30 Telememo pages
8 letters and 14 numerals per page
Other: Auto-sort
• 1/100-second stopwatch
Measuring capacity: 59'59.99"
Measuring mode: Elapsed time, split time, 1st-2nd place times
• Daily alarms
5 independent daily alarms
• Hourly time signal
• Auto-calendar ( to year 2039)
• 12/24-hour formats
• Regular timekeeping
Analog: 2 hands (Hr, min)
Digital: Hr, min, sec, am/pm, month, date, day
Item Detail

— 2 —
2. OPERATION CHART: MODULE QW-2339
WORLD TIME MODE
The World Time Mode shows you the current time in 27
cities (29 time zones) around the world.
•For full information on city codes, see the “CITY CODE
TABLE”.
•The time setting of the Timekeeping Mode and the World
Time Mode are synchronized. Whenever you change
the time setting for any city in the Timekeeping Mode,
the settings of all World Time cities are changed ac-
cordingly.
To select a World Time City and view its time
1.In the World Time Mode, press Dto scroll forward
through the city codes (time zones). Holding down D
scrolls at high speed.
2.When the city code you want is on the display, press
Ato view its current time.
•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.
TIMEKEEPING MODE
•Press Dto toggle the display between the date screen
(day of the week, month, day) and the time screen (hour,
minutes, seconds).
To set the time and date
1.While in the Timekeeping Mode, hold down Auntil the
seconds digits flash on the display, indicating the set-
ting screen.
2.Press Cto move the flashing in the sequence shown
below.
3.While the seconds setting is selected (flashing), press
Dto reset it to 00. If you press Dwhile the seconds
setting is in the range of 30 to 59, the seconds are re-
set to 00 and 1 is added to the minutes. If the seconds
setting is in the range of 00 to 29, the minutes count is
unchanged.
•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 Dfor one or two seconds to turn the auto light
switch function on and off.
•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 six hours after you turn it on. Repeat the
above procedure to turn the auto light switch function back on if you want.
•Pressing Bat any time 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 backlight shortens the battery life.
•The watch emits an audible sound whenever the display is illuminated. This is be-
cause 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 acci-
dents, 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 dis-
traction, which can result in a traffic accident and serious personal injury.
GENERAL GUIDE
•Press Cto change from mode to mode.
•Pressing Bin any mode illuminates the digital display for about 1.5 seconds. The backlight is disabled while a setting screen is on the display.
•If you do not perform any operation for a few minutes while a setting screen (with flashing digits) is on the display, the watch automatically exits the setting screen.
Press C.
Press
D.
Timekeeping Mode World Time Mode Telememo Mode Alarm Mode Stopwatch Mode Hand Setting Mode
DST
PressD.
Minute handHour hand
Month-
Day
24H indicator
HourMinutes Seconds
Day of
week
DST on indicator
•While the DST∗(Daylight Saving Time) setting is selected, press Dto toggle it on
and off. If you turn the DST on, the DST on indicator appears on the display.
•The DST on/off setting you make for the city code that is currently selected in the
Timekeeping Mode (your home time city) is also applied to that city code in the
World Time Mode.
•While the city codes setting is selected, use D(+) and B(–) to scroll thorough the
available codes until the one you want to use as your home time city is displayed.
•For full information on city codes, see the “CITY CODE TABLE”.
•While the 12/24-hour setting is selected, press Dto switch between the two for-
mats.
•With 12-hour timekeeping, times between midnight and noon are indicated by A
(am), while times between noon and midnight are indicated by P(pm).
•The 24H indicator is on the display while 24-hour timekeeping is selected.
•While any other setting is selected (flashing), press D(+) or B(–) to change it.
Holding down either button changes the setting at high speed.
4. After you make the settings you want, press Ato exit the setting screen.
•The day of the week is automatically set in accordance with the date.
•The date can be set within the range of January 1, 2000 to December 31, 2039.
•The watch’s built-in full automatic calendar automatically makes allowances for dif-
ferent month lengths and leap years. Once you set the date, there should be no
reason to change it except after the replacement of the watch’s battery.
∗Daylight Saving Time (DST), which is also sometimes called “summer time” ad-
vances the time for one hour, as is the custom in some areas during the summer.
Remember that not all countries or even local areas use Daylight Saving Time.
Seconds DST City Code Hour Minutes
Day Month Year 12/24
DST
ABOUT THE BACKLIGHT
About the Auto Light Switch Function
When the auto light switch function is turned on, the backlight automatically turns on
for about 1.5 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.
Movingthewatchtoapositionthatisparalleltothegroundandthentiltingittowards
you approximately 40 degrees causes the backlight to illuminate.
Parallel to
ground 40
°
Parallel to ground More than 15 degrees
too high More than 15 degrees too low
Hold down D.
Auto light switch
indicator
ON OFF
Press A.
Press
D.
Mode
indicator 2 Current Time in City Code zone
City
Code
DST on indicator
Mode indicator 1
3. While the time screen is on the display, press Dto switches back to the city code
screen.
•At this point you could press Dagain to scroll through city codes.
Daylight Saving Time (DST)
Daylight Saving Time automatically advances the time setting by one hour from
Standard Time. You can make individual Daylight Saving Time settings for each city
code (time zone). Remember that not all countries or even local areas use Daylight
Saving Time.
To switch between Standard Time and Daylight Saving Time
1.In the World Time Mode, use Dto display the city code (time zone) whose stan-
dard time/daylight saving time setting you want to change.
2.Hold down Atoggle between Daylight Saving Time and Standard Time.
•The DST indicator appears on the display whenever you display a city code for
which daylight saving time is turned on.

— 3 —
TELEMEMO MODE
The Telememo Mode lets you store up to 30 records, each
with a name (up to eight characters) and a phone number
(up to 14 digits). Records are automatically sorted based
on the names. You can recall records by scrolling through
them on the display.
•See the “CHARACTER LIST” for details on how the
watch sorts records.
•The message “NO-DATA” appears when there are no
records stored in memory.
•The blank screen appears when you scroll to the loca-
tion between the last and the first records stored in
memory.
Press D.
Press A.
Mode indicator
Telephone number
Name
Remaining memory
0 ~ 9 (Space)
Press .
Press .
•The record on the display when you exit the Telememo Mode appears first the next
time you enter the Telememo Mode.
To input a new Telememo record
1.In the Telememo Mode, if the message “NO-DATA” is not on the display, press D
and Bat the same time. This causes the blank screen to appear.
•If the blank screen does not appear when you press Dand B, it means that
memory is full. To store another record, you will first have to delete a record stored
in memory.
2.Hold down Aand a cursor appears on the display.
3.Use D(+) and B(–) to scroll through characters at the current cursor position.
Characters scroll in the sequence shown below.
•Holding down Dor Bscrolls at high speed.
4.When the character you want is at the current cursor position, press Cto move
the cursor to the right.
5.Repeat the steps 3 and 4 to input the rest of the characters.
6.After you input the name, use Cto move the cursor to the right until the number
input screen “-----” appears.
•You can input up to eight characters for the name, though only six characters are
visible at a time. If the name you input has fewer than eight characters, use Cto
move the cursor to the eighth space (which means you would press Cthree times
after inputting a five-character name).
•Pressing Cagain while the cursor is at the eighth space changes to the number
input screen. When the cursor is at the 14th digit of the number input screen, press-
ing Ccauses the name input screen to appear again.
7.Use D(+) and B(–) to scroll through characters (hyphen, numbers, space) at the
current cursor position on the number screen. Characters scroll in the sequence
shown below.
A ~ Z 0 ~ 9 (
(
(Space)
Press .
Press .
•Holding down Dor Bscrolls characters at high speed.
8.When the character you want is at the cursor position, press Cto move the cursor
to the right.
9.Repeat steps 7 and 8 to input the rest of the numbers you want.
•You can input up to 14 digits for the number.
10.After inputting the name and number of the record, press Ato store it.
•The message “SORT” appears on the display for a few moments after you press
Ato indicate that the watch is sorting records.
•After the record is sorted, the cursor appears in the display, ready for input.
11.Input the next record or press Ato exit the setting screen.
•The display can show only six name characters or nine number digits at a time.
Longer names and numbers scroll continuously from right to left. The symbol “ ”
indicates that the character or digit to the left is the last, and the character or digit to
the right is the first.
•Pressing Dwhile a name is scrolling on the display jumps to the first character of
the name. Scrolling resumes from there.
•Pressing Awhile a number is scrolling on the display jumps to the first digit of the
number. Scrolling resumes from there.
To recall Telememo data
1.In the Telememo Mode, press Dto scroll forward through the names of the stored
records.
•Holding down Dscrolls through the names at high speed.
2.When the name for the record you want is on the display, press Ato view its
number.
3. Pressing Dwhile a number screen is on the display returns to the name screen.
•At this point you could press Dagain to scroll through names.
To edit Telememo data items
1.In the Telememo Mode, press Dto scroll forward through the names of the stored
records.
•Holding down Dscrolls through the names at high speed.
2.When the name for the record you want is on the display, hold down Auntil the
cursor appears in the display.
3.Use Cto move the cursor to the character you want to change.
4.Use D(+) and B(–) to change the character.
•See step 3 of “To input a new Telememo record” for information on inputting name
characters, and step 7 for inputting number characters.
5.After making the changes that you want, press Ato store them and exit the set-
ting screen.
•The message “SORT” appears on the display for a few moments after you press
Ato indicate that the watch is sorting records.
To delete Telememo data
1.In the Telememo Mode, press Dto scroll forward through the names of the stored
records.
•Holding down Dscrolls through the names at high speed.
2.When the name for the record you want is on the display, hold down Auntil the
cursor appears in the display.
3.Press Dand Bat the same time. The message “CLEAR” appears in the display,
indicating that the record was deleted.
•After the record is deleted, the cursor appears in the display, ready for input.
4.Input a record or press Ato exit the setting screen.
ALARM MODE
You can set up to five daily alarms. When the Daily Alarm
is turned on, the alarm sounds for 20 seconds at the pre-
set 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.While in the Alarm Mode, press Dto display the num-
ber of the alarm you want to set.
Mode indicator
Alarm number
Hour Minutes
Alarm on indicator
2.Hold down Auntil the hour digits flash on the display, indicating the setting screen.
•At this time, the alarm is turned on automatically.
3.Press Cto move the flashing in the sequence shown below.
4.Use D(+) and B(–) to change the setting. Holding down either button changes
the setting at high speed.
5.After you set the alarm time, press Ato exit the setting screen.
•The format (12-hour and 24-hour) of the alarm time matches the format you select
in the Timekeeping Mode.
•When setting the alarm time using the 12-hour format, take care to set the time
correctly as morning or afternoon.
To stop the alarm
•Press any button to stop the alarm after it starts to sound.
To turn a daily Alarm or the Hourly Time Signal on and off
1.Use Dto display the alarm you want to turn on or off, or the screen for turning the
Hourly Time Signal on or off.
2.Press Ato toggle the displayed alarm or Hourly Time Signal on and off.
•In the Alarm Mode, the alarm on indicator appears to indicate the on/off status of
the currently displayed alarm. In all other modes, the alarm on indicator appears
when any one of the five alarms is turned on. The alarm on indicator is not dis-
played in other modes when all alarms are turned off.
Alarm 1 Alarm 5Alarm 2 Alarm 3 Alarm 4
Hourly Time Signal
Hour Minutes
Daily Alarm indicator
Hourly Time
Signal indicator
•The Hourly Time Signal indicator is displayed in all modes when the Hourly Time
Signal is turned on.
To test the alarm
In the Alarm Mode, hold down Dto sound the alarm.
•The alarm test does not work while the Alarm Mode setting screen is on the display.
•Holding down Dto test the alarm also advances to the next alarm number.
Mode indicator
1/100 second
Minutes
Seconds
STOPWATCH MODE
The Stopwatch Mode lets you measure elapsed time, split
times, and two finishes. The range of the stopwatch is 59
minutes, 59.99 seconds. You can use the EL backlight by
pressing Bat any time while the stopwatch is operating.
Elapsed time measurement
DDDDA
Start Stop Re-start Stop Clear
Split time measurement
DAADA
Start Split Split release Stop Clear
Split time and 1st-2nd place times
DADAA
Start Split Stop Split release Clear
First runner
finishes. Second runner finishes.
Record time of
first runner.
Record time of
second runner.
➤
➤
➤
➤➤➤
➤
➤➤➤
➤➤

— 4 —
HAND SETTING MODE
When the analog setting does not match the time shown
on the digital display, use this mode to correct the analog
setting.
1.Hold down Awhile in the Hand Setting Mode until the
message “SET” start to flash on the display.
2. Each press of Dadvances the hands 20 seconds. Hold-
ing down Dadvances the hand at high speed.
•Pressing Bwhile holding down Dcauses the hand
setting to change at high speed, even if you release the
buttons. Press any key to stop.
•
The analog time setting does not stop automatically when
it reaches the current time. You must stop the hands manu-
ally.
•Note that the hands can be advanced only and cannot be moved back. Take care
so you do not go past the setting you want to make.
3.After you set the analog time, press Ato exit the setting screen.
•Depending on your timing when you operate the Dbutton, the above operation
can cause the minute hand timing to become late. If this happens, repeat the above
operation to correct the minute hand timing.
Mode indicator
Hour Minutes
CITY CODE TABLE
–11 –11
–10 HNL HONOLULU PAPEETE
–9 ANC ANCHORAGE NOME
–8 LAX LOS ANGELES SAN FRANCISCO
, LAS VEGAS,
VANCOUVER, SEATTLE, DAWSON CITY
–7 DEN DENVER EL PASO, EDMONTON
HOUSTON, DALLAS/FORT WORTH,
–6 CHI CHICAGO NEW ORLEANS, MEXICO CITY,
WINNIPEG
MONTREAL, DETROIT, MIAMI, BOSTON,
–5 NYC NEW YORK PANAMA CITY, HAVANA, LIMA,
BOGOTA
–4 CCS CARACAS LA PAZ, SANTIAGO, PORT OF SPAIN
–3 RIO
RIO DE JANEIRO
SAO PAULO, BUENOS AIRES, BRASILIA,
MONTEVIDEO
–2 –02
–1 –01
0 GMT
0 LON LONDON DUBLIN, LISBON, CASABLANCA,
DAKAR, ABIDJAN
MILAN, ROME, MADRID, AMSTERDAM,
+1 PAR PARIS ALGIERS, HAMBURG, FRANKFURT,
VIENNA, STOCKHOLM, BERLIN
+2 CAI CAIRO ATHENS, HELSINKI, ISTANBUL,
JRS JERUSALEM BEIRUT, DAMASCUS, CAPE TOWN
+3 JED JEDDAH MOSCOW, KUWAIT, RIYADH, ADEN,
ADDIS ABABA, NAIROBI
+3.5 THR TEHRAN SHIRAZ
+4 DXB DUBAI ABU DHABI, MUSCAT
+4.5 KBL KABUL
+5 KHI KARACHI MALE
+5.5 DEL DELHI MUMBAI, CALCUTTA
+6 DAC DHAKA COLOMBO
+6.5 RGN YANGON
+7 BKK BANGKOK JAKARTA, PHNOM PENH, HANOI,
VIENTIANE
SINGAPORE, KUALA LUMPUR,
+8 HKG HONG KONG BEIJING, TAIPEI, MANILA, PERTH,
ULAANBAATAR
+9 TYO TOKYO SEOUL, PYONGYANG
+9.5 ADL ADELAIDE DARWIN
+10 SYD SYDNEY MELBOURNE, GUAM, RABAUL
+11 NOU NOUMEA PORT VILA
+12 WLG WELLINGTON CHRISTCHURCH, NADI, NAURU ISLAND
* Based on data as of June 2000.
GMT City City Other major cities in same time zone
differential Code
CHARACTER LIST
BCDEFG A
IJKL
MN
HPQRSTU
OWXYZ01
V3456782–./:,
9

— 5 —
3. DRAWINGS: MODULE QW-2339
3-1. BLOCK DIAGRAM
TOTAL
BONDING 129PINS 78PINS
LSI
LCD
INV ✽2. KI5 : Open (No Soldering)
KI6 : Open (No Soldering)
✽1. No bonding
AC L4 L41 LC1 LC6 L3 L42~L60 SD1 OSB SDD SCK SCUT PT PTIN CRMS CRST CRIN
L1
L2
An. B
PX1
PY1
Vraf
PW1
PY3
PX3
PU1
PZ1
PH
LE
ADIN
A2OUT
P0
T1 ✽1✽1✽1✽1✽1✽1✽1✽1✽1✽1✽1✽1
✽1
✽1
✽1
✽1
✽1
✽1
✽1
✽1
✽1
✽1
✽1
✽1
✽1
✽1
T2
T3
T4
KI1
S3
SL
S1
S2
✽2
SK
KS
Xtal
CT
✽2
✽1
✽1
✽1
✽1
✽1
✽1
✽1
KI2
KI3
KI4
KI5
KI6
KI7
KI8
KI9
KC1
KC2
KC3
KC4
KC5
KC6
EMP
XTB
XT
VDD2A GND BD1 VC3 VC4 VCH VOSC VDD1 VC1 VC2 VANGNDA VDD2 VHF VDSP VDD3
LD1
EL LL2
GND
+C9 BAT
Tr1
ZPZ
LL1
C5
C1
C6 C8 C7 C4 C2 C3
L –
VOUT
L +
E'
CLF2 Cel
CLF1
V +
BACK
FRONT
L4
L5
L6
L7
L8
L9
L10
L11
L12
L13
L14
L15
L16
L17
L18
L19
L20
L21
L22
L23
L24
L25
L26
L27
L28
L29
L30
L31
L32
L33
L34
L35
L36
L37
L38
L39
L40
L41
LC1
x34y0
x33y0
x32y0
x30y0
x29y0
x28y0
x27y0
x26y0
x24y0
x23y0
x22y0
x21y0
x20y0
x18y0
x17y0
x16y0
x15y0
x14y0
x12y0
x11y0
x10y0
x9y0
x8y0
x6y0
x5y0
x4y0
x3y0
x2y0
x1y0
x0y0
x7y0
WORLD TIME
X13y0
x19y0
x25y0
x31y0
LC2
x34y1
x33y1
x32y1
x30y1
x29y1
x28y1
x27y1
x26y1
x24y1
x23y1
x22y1
x21y1
x20y1
x18y1
x17y1
x16y1
x15y1
x14y1
x12y1
x11y1
x10y1
x9y1
x8y1
x6y1
x5y1
x4y1
x3y1
x2y1
x1y1
x0y1
x7y1
x13y1
x19y1
x25y1
x31y1
LC3
x34y2
x33y2
x32y2
x30y2
x29y2
x28y2
x27y2
x26y2
x24y2
x23y2
x22y2
x21y2
x20y2
x18y2
x17y2
x16y2
x15y2
x14y2
x12y2
x11y2
x10y2
x9y2
x8y2
x6y2
x5y2
x4y2
x3y2
x2y2
x1y2
x0y2
x7y2
x13y2
x19y2
x25y2
x31y2
LC6
x34y3
x33y3
x32y3
x30y3
x29y3
x28y3
x27y3
x26y3
x24y3
x23y3
x22y3
x21y3
x20y3
x18y3
x17y3
x16y3
x15y3
x14y3
x12y3
x11y3
x10y3
x9y3
x8y3
x6y3
x5y3
x4y3
x3y3
x2y3
x1y3
x0y3
x7y3
x13y3
x19y3
x25y3
AUTOEL
x31y3
LC4
H-SET
SPLIT
DST
SIGNAL
ALARM
24H
LC5
x34y4
x33y4
x32y4
x30y4
x29y4
x28y4
x27y4
x26y4
x24y4
x23y4
x22y4
x21y4
x20y4
x18y4
x17y4
x16y4
x15y4
x14y4
x12y4
x11y4
x10y4
x9y4
x8y4
x6y4
x5y4
x4y4
x3y4
x2y4
x1y4
x0y4
x7y4
x13y4
x19y4
x25y4
x31y4
COM.
SEG.
LC1 LC2 LC3 L33 L34 L35 L36 L38 L39 L40 L41 LC4 LC5 LC6
L32 L31 L30 L29 L28 L27 L26 L25 L24 L23 L22 L21 L20 L19 L18 L17 L16 L15 L14 L13 L12 L11 L10
L9 L8 L7 L6 L5 L4
y0
y4
x34x0
24H ALARM SIGNAL DST SPLIT H-SET
WORLD TIME AUTOEL

— 6 —
3-2. CHECKING TERMINALS AND COMPONENTS: MODULE QW-2339
Top view of P.C.B. ass’y Bottom view of P.C.B. ass’y
KI1
GNDVHF
GND
KI4
GND
GND
GND
XTB
XT
XT
AC
GND
GND
GND
VUOT
VUOT
GND
GND
GND
CLF2VDD1
GND
GND GND
GND KI6
GND
GND
GND
KI5
L1
VOSC
VDD2
VC3
VC4
VC1
VC2
L2
GND VDD3
VCH
L+ VOUT L– GND
VDD2
CLF1 CLF2
KC1
KC2
CLF1VDSP
KI9
KI1
KI4
VDD2
VDD2
KI3KI3
KI2KI2
VDSC
VDD2
KI5
GND
VCH
VUOT
KC1
VC1
GND
L
L+
L–
L
L
VDD2BD1
BD1
4. Capacitor/Trimmer
(1001 0950)
CT
10. Cushion/6
(7211 0064)
9. Cushion/506
(7211 9631) 9. Cushion/506
(7211 9631)
6. Tilt sensor
(7105 5275)
Varistor
Capacitor/Chip
C8
Capacitor/Chip
C3
Capacitor/Chip
C7
Capacitor/Chip
C5
Capacitor/Chip
C2
Capacitor/Chip
C4
Capacitor/Chip
C1 Z
Capacitor/Chip
C6
Capacitor/Tantalum
C9
3.PCB ass'y
(7640 3794)
Inverter
INV
5.Oscillator/Crystal
(7110 0715)
Xtal
Transistor
Tr1
Capacitor/Chip
Ce1 Coil
LL1
Coil
LL2
SK

— 7 —
4. EXPLODED VIEW: MODULE QW-2339
21 (7235 0917)
7 (7640 3428)
Analog block
18 (1001 6590)
14 (1001 6593)
3 (7640 3794)
PCB ass'y
11 (1001 6591)
16 (7231 1814)
15 (1001 6599)
12 (7231 1962)
20 (7224 0652)
2 (1001 6594)
1 (1002 6651)
19 (1001 4294)
13 (1001 6592)
17 (7227 0350)
8 (1001 6598)
Battery/Lithium
(CR1616)

5. PARTS LIST: QW-2339
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 basis.
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
7640 3807 MODULE/WITH MOVEMENT QW-2339YC-02TK GS-310-2B/8B 1 A
1 1002 6651 LCD C2339-01N QW-2339YC-02TK 1 A
2 1001 6594 EL EL-2348-A-01 QW-2339YC-02TK 1 A
3 7640 3794 PCB ASS'Y Q254704*1TK QW-2339YC-02TK 1 A
4 1001 0950 CAPACITOR/TRIMMER CTZ2E-30C-W2-P QW-2339YC-02TK 1 B
5 7110 0715 OSCILLATOR/CRYSTAL DT-26SF QW-2339YC-02TK 1 B
6 7105 5275 SENSOR/TILT TS-2418-P QW-2339YC-02TK 1 B
7 7640 3428 ANALOG BLOCK QW-2349MV-82TK QW-2339YC-02TK 1 A
8 1001 6598 CONTACT/BATTERY (-) 2348 Q366836-1 QW-2339YC-02TK 1 C
9 7211 9631 CUSHION/506 Q49364-1 QW-2339YC-02TK 2 C
10 7211 0064 CUSHION/6 Q4914-1 QW-2339YC-02TK 1 C
11 1001 6591 HOLDER/BATTERY 2348 Q366808-1 QW-2339YC-02TK 1 C
12 7231 1962 HOLDER/HOUR WHEEL 2327 Q364830-1 QW-2339YC-02TK 1 C
13 1001 6592 INTERCONNECTOR/2348-1 Q466393-1 QW-2339YC-02TK 1 C
14 1001 6593 INTERCONNECTOR/2348-2 Q466394-1 QW-2339YC-02TK 1 C
15 1001 6599 LABEL/2348 Q466392-1 QW-2339YC-02TK 1 C
16 7231 1814 PLATE/TERMINAL 1673-1 Q459434A-1 QW-2339YC-02TK 1 C
17 7227 0350 SCREW/1325-3 Q452678A-1 QW-2339YC-02TK 1 C
18 1001 6590 SPACER/2348 Q366803-1 QW-2339YC-02TK 1 C
19 1001 4294 SPRING/COIL 2306-1 Q466513A-1 QW-2339YC-02TK 2 B
20 7224 0652 WASHER/340-2 Q421691-1 QW-2339YC-02TK 1 C
21 7235 0917 WHEEL/HOUR 2327 Q364638-1 QW-2339YC-02TK 1 B
BATTERY/LITHIUM CR1616 QW-2339YC-02TK 1
For the prices and minimum order/supply quantities of the above parts, refer to the Parts Price List P.P.L.-564.
Notes: Q - Used quantity
R - Rank — 8 —

— 9 —
6. EXPLODED VIEW: ANALOG BLOCK (C-15.5) OF QW-2339
37-5 (7235 0350)
67-6 (7235 0336)
7-3 (7227 0273) 9
5
8
7-2 (7235 0329) 4
7-1 (1001 4960) 7
7-4 (7235 0364) 2
1
9~ 1: Disassemble order
1~ 9: Reassemble order

7. PARTS LIST: ANALOG BLOCK (C-15.5) OF QW-2339
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 basis.
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
7 7640 3428 ANALOG BLOCK QW-2349MV-82TK QW-2339YC-02TK 1 A
7-1 1001 4960 COIL ASS'Y 2348 Q366354*1 QW-2339YC-02TK 1 A
7-2 7235 0329 ROTOR/1301 Q340980E*1 QW-2339YC-02TK 1 B
7-3 7227 0273 SCREW/1300-1 Q436969A-1 QW-2339YC-02TK 2 C
7-4 7235 0364 STATOR/1301 Q340977A-1 QW-2339YC-02TK 1 C
7-5 7235 0350 WHEEL/MINUTE 1301 Q340983A-1 QW-2339YC-02TK 1 B
7-6 7235 0336 WHEEL/THIRD 1301 Q340981A-1 QW-2339YC-02TK 1 B
For the prices and minimum order/supply quantities of the above parts, refer to the Parts Price List P.P.L.-564.
Notes: Q - Used quantity
R - Rank — 10 —

— 11 —
8. PRECAUTIONS FOR REPAIR: MODULE QW-2339
8-1. 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 negative (–) side of the main plate with the metallic tweezers.
The contact should be made for about two seconds.
2. On removing of the module from the case, please insert the precision screw driver between the module
and the case pointed by an arrows.
8-2. 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 Dbutton, press Aand C buttons at the normal timekeeping mode.
Then all the segments are displayed and the LCD drive signals are changed to the static drive
signal of “32 Hz” so that you can check the accuracy with the quartz timer.
B) CANCELLATION OF THE “ACCURACY CHECKING MODE”
Push any button except for Dbutton.
Then the display is returned to its original state.
NOTE: The “ACCURACY CHECKING MODE” will automatically
return to the regular mode in 1 ~ 2 hour(s) without any
operation. QW-2339
AC
Metallic tweezers
A
C
B
D

CASIO TECHNO CO.,LTD.
Overseas Service Division
Nishi-Shinjuku Kimuraya Bldg. 1F
5-25, Nishi-Shinjuku 7-Chome
Shinjuku-ku, Tokyo 160-0023, Japan