Page 1
SERVICE MANUAL
& PARTS LIST
REF. NO. S/M-981
JAN. 2007
MODULE NO.
QW-4343
GS-1000J
R
(WITHOUT PRICE)
Page 2
CONTENTS
Page
1. SPECIFICATIONS: MODULE QW-4343 .................................................... 1
2. DRAWINGS: MODULE QW-4343
2-1. CHECKING TERMINALS AND COMPONENTS ..........................................2
3. EXPLODED VIEW: MODULE QW-4343 .................................................... 3
4. PARTS LIST: MODULE QW-4343 ............................................................. 4
5. PRECAUTIONS FOR REPAIR: MODULE QW-4343
5-1. AC (ALL CLEAR) AND REMOVING OF MODULE ......................................6
5-2. ACCURACY CHECKING,
SOLAR CELL-PCB ASS'Y CONTACT CHECKING.....................................
5-3. DATE INDICATOR MOVEMENT ACCURACY CHECK MODE ...................8
5-4. TIME CALIBRATION SIGNAL TEST MODE ................................................8
5-5. HANDLING INSTRUCTIONS TO PRESS FITTING THE HANDS...............10
7
6. TROUBLESHOOTING: MODULE QW-4343............................................. 11
Page 3
1. SPECIFICATIONS: MODULE QW-4343
Item Detail
Battery CTL1025 (Storage battery)
Note: Use CTL1025 only. Other storage battery or CR1025 can cause
damage to the watch.
Battery life Approx. 5 months
Current consumption 0.40 µA maximum
Alarm system Piezo plate on Cover/Back
Accuracy ±20 sec./month
Accuracy setting system Chip capacitor selection
Accuracy checking See page 7
Functions • Solar powered
• Time calibration signal reception
Auto receive
Manual receive
• Time Calibration Signal
Receivable Time Calibration Signals
Fort Collins, Colorado (Call Sign: WWVB, Frequency: 60kHz)
Fukushima, Japan (Call Sign: JJY, Frequency: 40kHz)
Fukuoka/Saga, Japan (Call Sign: JJY, Frequency: 60kHz)
• Low battery warning display
• World Time
• 1/20-second stopwatch
Measuring capacity: 23:59'59
• Daily alarm
• Power Saving (Turns off the display when the watch is left in the dark)
• Auto-calendar
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Page 4
2. DRAWINGS: MODULE QW-4343
2-1. CHECKING TERMINALS AND COMPONENTS
CUSHION 506
KI1
GND
KI3
Short pad for switching modules
KI5-GND: Open (No Soldering)
KI6-GND: Open (No Soldering)
KI7-GND: Open (No Soldering)
VDD2
VDD2
P2
FET-D
KI4
GND
O4
O1
O1
O3
O2
XTB
XT
OSCILLATOR/CRYSTAL
LL1
O1
KI2
TAPE/ADHESIVE 2306
O5
O6
O1
O1
GND
VSC
Short pad for R trimming
2. PCB ASS'Y
(76409259)
KI5
SCIN
SCIN
GND
Tr1
GND
KI7
GND
GND
R3
KI6
LL1
LL1
VDD2
VDD2
BD
GND
SCR
VDD2
GND
VSC
VSC
GND
AC
VDD2
VDD2
GND
Ccp
P1'
P2'
P3-1
GND
Vcc
P9
P4
KI8
Ccp
GND
P7
P5
P7
P7P5
VCH
GND
VCH
GND
VC3
O5
O6
VHF
O1
KC1
VC4
VC3
P1' P1' P1' P1' P1' P1'
FET-S
FET-S'
FET-S'
KC4
GND
P1'
FET-S'
VPM
FET-S'
P1
P2'
P2' P2'
RPM
RPM
R2
KI4 KI1
GND
GNDB
KI2
GND
R1 GND
LL1
Tr1
GND
SCIN
GND
GND
GND
XT
XT
VSC
P2
P2'
KI3
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3. EXPLODED VIEW: MODULE QW-4343
6 (10218649)
16 (72270343)
17 (10209136)
13 (10184045)
11 (10212761)
2 (76409259)
PCB Ass'y
9 (10234346)
15 (72270294)
14 (72240990)
1 (76409230)
12 (10212759)
4 (10195754)
9 (10234346)
5 (10212752)
8 (10212760)
3 (10135068)
Battery storage (CTL1025)
10 (10135066)
7 (10140782)
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Page 6
4. PARTS LIST: MODULE QW-4343
QW-4343YC
1 QW-4343YC-02TK
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 -----------------------------------------
-
Important
C Rank ----------------------------------------- Not 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".
Attention to order
1. The most of normal re
p
air or initial repair within 1year since released month can be done by main parts.
2. Minor
p
arts should be ordered carefully in consideration of the actual usage of your repair and your technical skills.
3. Main
p
arts should be ordered and stocked appropriately in consideration of your parts usage anre repair usage for
similar models.
MAIN PARTS
Item Code No. Parts Name S
p
ecification Q’TY R
1
76409231 MODULE/WITH MOVEMENT QW-4343YC-02TK 1 A
1 76409230 ANALOG BLOCK QW-4343MV-83TK 1 A
2 76409259 PCB ASS’Y RJQ528910*001V01TK 1 A
MINOR PARTS
Item Code No. Parts Name S
p
ecification Q’TY R
1
3 10135068 BATTERY/STORAGE CTL1025 1 C
4 10195754 CUSHION 3707-2 RJQ524197-001V03 1 C
5 10212752 CUSHION 4323-1 RJQ527451-001V01 1 C
6 10218649 HOLDER 4329 RJQ527343-001V02 1 C
7 10140782 LABEL RJQ517198-001V02 1 C
8 10212760 PLATE/TERMINAL RJQ527344-002V01 1 C
9 10234346 SCREW/FLAT 4329 RJQ532242-001V01 6 C
10 10135066 SHEET/INSULATION RJQ515074-001V01 1 C
11 10212761 SPRING/COIL RJQ527345-001V01 2 C
12 10212759 SPRING/LEAF RJQ527210-001V01 1 C
13 10184045 TERMINAL/BATTERY
(+)
RJQ519936-001V03 1 C
14 72240990 WASHER 388 Q424901-1 1 C
15 72270294 WASHER/745 Q436294A-1 1 C
Notes: Q - Used quantity
R - Rank
A : Important
C: Not Important
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Item Code No. Parts Name Specification Q’TY R
1
16 72270343 WASHER 1325 Q450447-1 1 C
17 10209136 WHEEL/HOUR RJQ527061 1 C
For the prices and minimum order/supply quantities of the above parts, refer to the Parts Price List P.P.L.-638.
Notes: Q - Used quantity
R - Rank
A : Important
C: Not Important
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5. PRECAUTIONS FOR REPAIR: MODULE QW-4343
5-1. 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.
2. On removing of the module from the case, please insert the precision screw driver between the module
and the case pointed by arrows.
Note:After performing AC(ALL CLEAR), the mode is switched to the second hand movement accuracy
check mode at the home position adjustment mode.
Metallic tweezers
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Page 9
3. Operation after AC
A
Set the second hand and the indicator hand
Set the second hand with D (fast forward available), set the indicator hand with B (fast
C
forward available)
Set the hour and minute hands and the 24-hour hand
D for normal rotation (fast forward available), B for reverse rotation (fast forward available)
*When choosing reverse rotation, go some pulse over your setting position, and then adjust
C
choosing normal rotation. (Considering backlash)
Set the chronograph hour and minute hands
D for normal rotation (fast forward available), B for reverse rotation (fast forward available)
*When choosing reverse rotation, go some pulse over your setting position, and then adjust
C
choosing normal rotation. (Considering backlash)
Adjust the calendar.
D for normal rotation (fast forward available), B for reverse rotation (fast forward available)
Be sure the measure of the date indicator, "1" is in the frame.
(Try to set it as center as possible.)
Press A to go back to the noemal timekeeping mode. (It will move to the current time counting from
the AC moment as 00 hour 00 minute.)
Indicator hand
24-hour hand
C
B
Chronograph hour and minute hands
30
D
Second hand
4. How to measure consumption current
This model starts correct positioning of the second hand in the H-SET mode immediately after AC.
When it is functioning, the value of consumption current would be a little higher as the internal circuit
operation would be different from the usual status.
To measure a correct consumption current value, operate as follows.
Hold down D and turn on the AC, and then let D go.
*After the operation above is finished, measure within one minute.
5-2 ACCURACY CHECKING, SOLAR CELL-PCB ASS'Y CONTACT CHECKING
1) From the time mode, hold down A and press D + C. The indicator hand moves to 0-second
position.
2) Press D button at the accuracy checking mode (only the second hand in operation.)
3) Press D button at the solar cell-PCB ass’y contact mode (The indicator hand bright: 40 seconds,
dark: 55 seconds)
4) Any key to return to the normal timekeeping mode.
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5-3 DATE INDICATOR MOVEMENT ACCURACY CHECK MODE
1) From the time mode, hold together in order of A → B → C. The date indicator and all hands reverse
to the baseline position. (Date is 1st.)
2) After moving to the baseline position, the date indicator circles once in a clockwise direction by
pressing D.
3) After the date indicator is stopped, press any key except for D to go back to the normal timekeeping
mode.
5-4 TIME CALIBRATION SIGNAL TEST MODE
1) To operate the receiving test, do as follows.
A
Hold A down and
B
press D and B
simultaneously.
C
Time mode
D
Display prioritized receiving station state
The indicator hand at 4-second position: JJY40
6-second position: JJY60
8-second position: WWVB
2) From the display prioritized receiving station mode, a test receiving station changes as below every
time D is pressed.
Display priori-
tized receiving
station state
D
JJY40 chosen state
(the indicator hand at 55-
second position)
D
D
JJY60 chosen state
(the indicator hand at 50-
second position)
D
WWVB chosen state
(the indicator hand at 45-
second position)
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Page 11
3) From the choice of a receiving station state, press A to start the test receiving.
*Be sure to confirm the indicator hand moves to 33-second (READY).
4) After about 15 minutes, take a look at the display. Refer to the pictures below to inspect the state
with the position of your indicator hand.
When received When not received
JJY40
JJY60
WWVB
Button positions
A
B
5-second
position
10-second
position
15-second
position
55-second
position
50-second
position
45-second
position
C
D
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5-5 HANDLING INSTRUCTIONS TO PRESS FITTING THE HANDS
When you need to press hands into place in case of maintenance and other occasions, follow the
instruction below to adjust the polarity of the rotor wheel and the positions of the hands.
1) Press the 24-hour hand and the 3H side hour hand into place near the position of 23H.
2) Drive the 3H side hour hand to a little before the 24H position using normal rotation.
Operation: AC → Press C × 2 → Adjust with D
3) While adjusting the polarity of the 3H side minute hand, position the 3H side hour hand precisely
at the 24H position
Operation: AC → Press C × 2 → Keep holding down D × 2 each time (even number times) to set
the 3H side hour hand.
4) Press fit the 3H minute hand. (Press fit within ±1° as a guide.)
5) Adjust the polarity of the second hand and then press fit the second hand. (Press fit within ±1° as
a guide.)
Operation: AC → Press D × 2
6) Position the 24H hour hand precisely at the 24H position using normal rotation.
Operation: AC → Press C × 1 → Adjust with D
7) Press fit the hour hand into the 12H position.
8) Reverse the hour hand about 30 minute, and then drive the hand precisely at the 12H position using
normal rotation.
Operation: AC → Press C × 1 → Reverse with B → Adjust with D
9) Press fit the minute hand into the 12H position.
10) Adjust the polarity of the indicator hand.
Operation: AC → Press D × 2
11) Press the indicator hand into the 12H position. (within ±1°)
How to check the polarity adjustment (one example)
After setting each hand to the baseline positions with H-SET, turn on the AC.
* When pressing D for the first time, the second hand moves.
* When pressing B for the first time, the second hand moves.
* After pressing C × 2, the indicator hand moves when D is pressed for the first time.
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6. TROUBLESHOOTING: MODULE QW-4343
This is a flow chart about signal reception.
START
Check whether the Home City
code is selected correctly.
To perform MANUAL time
calibration signal reception
Signal
reception OK?
No
To perform AUTO time
calibration signal reception
Signal
reception OK?
No
Replace the PCB ass'y
Signal
reception OK?
Yes
OK
Yes
OK
Yes
OK
No
There is a possibility of location bad.
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CASIO COMPUTER CO.,LTD.
Overseas Service Division
Shibuya-ku, Tokyo 151-8543, Japan
6-2, Hon-machi 1-Chome
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