Casio QW-4302 Service Manual
SERVICE MANUAL
& PARTS LIST
REF. NO. S/M-978
NOV. 2006
MODULE NO.
QW-4302
MRG-7000DJ
R
(WITHOUT PRICE)
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
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
— 1 —
2. DRAWINGS: MODULE QW-4302
2-1. LCD DIAGRAM
L14
L13
L12
L11
dst
h5
a5
f5
i5
g5
k5
e5
j5
d5
b5
c5
a4
f4
g4
e4 c4
d4
col0
b4
col1
h4
snz
a3 a2
f3 f2
b3 b2
g3 g2 g1 g0
e3 e2
c3 c2
d3 d2 d1 d0
hyp0
point0
chargerecover
a1
f1 f0
b1 b0
e1 e0
c1 c0
a_light
a0
rc0
L10
rc2
L9
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
f3
col0
L16
L17
L18
a_light recover
snz
g0 a0
e0
g2
c2
point0 hyp0
f0
a2
f2
L19
— 2 —
L20
SEG
SEG
L17
L18
L19
L20
L29
L29
COM
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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