Casio QW-4302 Service Manual

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Page 1

SERVICE MANUAL

& PARTS LIST

REF. NO. S/M-978

NOV. 2006

MODULE NO.

QW-4302

MRG-7000DJ

(WITHOUT PRICE)

Page 2

CONTENTS

Page

1. SPECIFICATIONS: MODULE QW-4302 .................................................... 1

2. DRAWINGS: MODULE QW-4302

2-1. LCD DIAGRAM ............................................................................................. 2

2-2. CHECKING TERMINALS AND COMPONENTS .......................................... 3

3. EXPLODED VIEW: MODULE QW-4302 .................................................... 4

4. PARTS LIST: MODULE QW-4302 ............................................................. 5

5. PRECAUTIONS FOR REPAIR: MODULE QW-4302

5-1. AC (ALL CLEAR) AND REMOVING OF MODULE ......................................7

5-2. ACCURACY CHECKING .............................................................................. 7

5-3. SOLAR CELL-PCB ASS'Y CONTACT CHECKING.....................................8

5-4. HOW TO CHECK TILT SENSOR.................................................................. 9

5-5. TIME CALIBRATION SIGNAL TEST MODE ................................................ 9

6. TROUBLESHOOTING: MODULE QW-4302.............................................10

Page 3

1. SPECIFICATIONS: MODULE QW-4302

Item Detail

Battery CTL1616 (Storage battery)

Note: Use CTL1616 only. Other storage battery or CR1616 can cause

damage to the watch.

Battery life Approx. 5 months Current consumption 0.49 µA maximum Alarm system Piezo plate on Cover/Back Accuracy ±15 sec./month Accuracy setting system Trimmer capacitor Accuracy checking See page 7 Functions • LED light (With full auto light function)

• Solar powered

• Time calibration signal reception Auto receive Manual receive Last date/time received display

• 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)

• Dual time

• 1/100-sec. stopwatch Measuring capacity: 59’59.99" Measuring modes: Elapsed time, split time, 1st-2nd place times

• Daily alarms 5 independent daily alarms snooze feature for one alarm only

• Hourly time signal

• Low battery warning display

• Auto-calendar (to year 2039)

• 12/24-hour format

• Regular timekeeping: Analog: 3 hands (Hr, min, sec) Digital: Hr, min, sec, pm, month, date, day

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Page 4

2. DRAWINGS: MODULE QW-4302 2-1. LCD DIAGRAM

L14

L13

L12

L11

dst

e4 c4

col0

col1

snz

a3 a2

f3 f2

b3 b2

g3 g2 g1 g0

e3 e2

c3 c2

d3 d2 d1 d0

hyp0

point0

chargerecover

f1 f0

b1 b0

e1 e0

c1 c0

a_light

rc0

L10

rc2

rc1

L15

SEG

L 9 L10 L11 L12 L13 L14 L15 L16

COM

rc2 k5 h5

d0 d3 g3 e2 d2 d4

LC2 LC3 LC4 LC5LC1

i5j5 dst g5d5 c5

c3 b3 e3 b2

col1

a5 b5 a3

col0

L16

L17

L18

a_light recover

snz g0 a0 e0 g2

point0 hyp0

L19

— 2 —

L20

SEG

L17 L18 L19 L20

L29

COM

L30

LC3

LC2

LC1

LC2 LC3 LC4 LC5LC1

g4d1

rc1 e5 f5 c0 b0

L30

charge

LC5

LC4

f4 c1e4rc0

f1e1b4c4h4 a1g1a4 b1

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2-2. CHECKING TERMINALS AND COMPONENTS

Short pad for switching modules KI6-GND: Short (Soldering) KI8-GND: Open (No Soldering) KI7-GND: Short (Soldering)

Kl3

SENSOR/TILT

VDD2

LED2

Kl1

GND

KI5

R1 VDD2

RPM

VDD2

GND

Kl7

L1LL3

GND

KC2

VPMRPM

GND

Kl8

GND

Kl6

GND

SHEET/INSHULASION 2763

GND

VDD1

GND

N1 GND

L18

L17

L16L6L15

VSC

GND

CCP

GND

KI2

L12

L11

L10

L14

L13

GND

XTB

LC2

L20

L19

LC1

LC4

L29

L21

L22

L23

LC5

L30

LC3

L26

L24

L25

L27

L28

TAPE/ADHESIVE 1588

VDD2

LED1

OSCILLATOR/CRYSTAL

Kl4

Short pad for R trimming

KI2

Rxt3

Rxt2

Rxt2Rxt3

GND

LED1

KI4

VSC

CAPACITOR/TRIMMER

3. PCB ASS'Y

Short pad for N trimming

(76409062)

VCC

VDD2

GND

VCC

CCP

GND

VDD2

VSC

KI9

VDD2

GND

VSC

SDO

FET-D

GND

VCH

GND

FET-S

GND

LD1

GNDB

VDSP

VC2

VC1

VC4

VDSP

KI3

VHF

GND

VDD3GND

VC3

VDD2

LD1

SCIN

GND

VC1

GND

VCH

GND

VDD2

LED2

KI5

KI5 R

SCIN

GND

KI1

GND SCR GND

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Page 6

3. EXPLODED VIEW: MODULE QW-4302

22 (10124956)

24 (10124960)

12 (10172632)

29 (72270343)

13 (10124962)

16 (10164777)

9 (10097687)

24 (10124960)

2 (10199933)

30 (72270294) 31 (10214214)

1 (76409146) 23 (10106509) 14 (10124963)

19 (72078349) 25 (10124961) 27 (10197474)

3 (76409062) PCB Ass'y 21 (10123230)

8 (10022106) 26 (72019599)

7 (10016598)

17 (10172627)

25 (10124961)

28 (10169526)

4 (76408261) 10 (10182650)

11 (10172626) 20 (72078546)

21 (10123230)

6 (10168959)

18 (10181225)

15 (10106512)

5 (10065657)

Battery storage (CTL1616)

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Page 7

4. PARTS LIST: MODULE QW-4302

(-)

QW-4302YC-01TK

1 QW-4302YC-01TK

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 ---------------------------------------

3. Batteries in Bulk pack on the tray will be supplied from our Overseas Spare Parts Section under charge ba

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

1The most of normal repair or initial repair within 1year since released month can be done by main parts. 2Minor parts should be ordered carefully in consideration of the actual usage of your repair and your technical skills. 3Main parts 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

76409050 MODULE/WITH MOVEMENT QW-4302YC-01TK 1 A 1 76409146 ANALOG BLOCK QW-4302MV-82TK 1 A 2 10199933 LCD S4302-01TH 1 A

Not Important

ecification Q'TY R

3 76409062 PCB ASS'Y RJQ522137*002V01TK 1 A

MINOR PARTS

Item Code No. Parts Name S

4 76408261 ANTENNA ASS'Y RJQ522195*001V01TK 1 C 5 10065657 BATTERY/STORAGE CTL1616 1 C 6 10168959 CONTACT/BATTERY 2730 Q255819-2V05 1 C 7 10016598 CONTACT/BATTERY 8 10022106 CUSHION 2306-2 Q466886-1 1 C 9 10097687 CUSHION 2549 Q470646-1 1 C

10 10182650 CUSHION 3731 RJQ524044-001V01 1 C 11 10172626 HOLDER 3731 RJQ520563-001V01 1 C 12 10172632 HOLDER/ HOUR WHEEl 3731 RJQ520520-001V01 1 C 13 10124962 INTERCONNECTOR/ 2763-1 Q471264-1 1 C 14 10124963 INTERCONNECTOR/ 2763-2 Q471265-1 1 C

2348 Q366836-1 1 C

ecification Q'TY R

15 10106512 LABEL/ 2730 Q471007-1 1 C 16 10164777 LIGHT GUIDE Q373126-1V03 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

17 10172627 PLATE/SHIELD 3731-1 RJQ520564-001V01 1 C 18 10181225 PLATE/SHIELD 3731-3 RJQ523783-001V01 1 C 19 72078349 SCREW Q47608A-1 2 C 20 72078546 SCREW/FLAT 355 Q411764-1 1 C 21 10123230 SCREW/FLAT2730 RJQ513792-001V01 4 C 22 10124956 SOLAR CELL BCS3028D6 1 C 23 10106509 SPRING/COIL 2730-1 Q470503-1 1 C 24 10124960 SPRING/COIL 2763-1 Q471262-1 2 C 25 10124961 SPRING/COIL 2763-2 Q471263-1 4 C 26 72019599 SPRING/COIL 967-1 Q430081-1 1 C 27 10197474 SPRING/LEAF Q373125-1V03 1 C 28 10169526 TAPE/ADHESIVE 3707 RJQ521248-001V01 1 C 29 72270343 WASHER 1325 Q450447-1 1 C 30 72270294 WASHER/745 Q436294A-1 1 C 31 10214214 WHEEL/HOUR 4302 RJQ528472-001V01 1 C

For the

rices and minimum order/supply quantities of the above parts, refer to the Parts Price List P.P.L.-636.

Notes: Q - Used quantity

R - Rank

A : Important C: Not Important

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Page 9

5. PRECAUTIONS FOR REPAIR: MODULE QW-4302 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.

Metallic tweezers

5-2. 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 B button, press A and 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”

Press any button. 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.

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QW-4302

Page 10

5-3. 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 D button, press A and B buttons at the normal timekeeping mode.

2. Check a Solar cell and PCB ass'y contact in the following order.

1) Display side up and place the watch on the desk.

2) Check the display indicates as figure 2.

3) Display side down and place the watch on the desk more than two seconds. Or go to a dark room and place the watch more than two seconds.

4) Check the display indicates as figure 3. If "8888" is not appeared on the display, disassemble again the module and check the contact spring between the Solar cell and PCB.

Figure 1 Figure 2

3. To exit from TEST mode Press any button.

Press D, A and B buttons

Place the watch in a dark room more than two seconds.

Appear "8888" on display.

Figure 3

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5-4. HOW TO CHECK TILT SENSOR

1) Press A, D and C buttons at the normal timekeeping mode.

2) Check the display indicates as figure 4.

3) Tilt the watch towards you more than 40 degrees.

4) Check the display indicates as figure 5.

Appear "TL" on display.

Tilt the watch towards you more than 40°

Figure 4 Figure 5

5-5. TIME CALIBRATION SIGNAL TEST MODE

1) Press B, C and D button at the same time to enter the test mode.

2) Press A button to switch from one signal source to another.

J40: Fukushima, Japan (Call Sign: JJY, Frequency: 40kHz) J60: Fukuoka/Saga, Japan (Call Sign: JJY, Frequency: 60kHz) W60

: Fort Collins, Colorado (Call Sign: WWVB, Frequency: 60kHz)

3) Press B button to start signal reception.

Appear "8888" on display.

More than 40°

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Page 12

6. TROUBLESHOOTING: MODULE QW-4302

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?

To perform AUTO time

calibration signal reception

Signal

reception OK?

Replace the PCB ass'y

Signal

reception OK?

Yes

Replace the Antenna ass'y

Signal

Yes

reception OK?

There is a possibility of location bad.

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Page 13

CASIO COMPUTER CO.,LTD.

Overseas Service Division

Shibuya-ku, Tokyo 151-8543, Japan

6-2, Hon-machi 1-Chome