SERVICE MANUAL
& PARTS LIST
REF. NO. S/M-980
JAN. 2007
MODULE NO.
QW-4762
QW-4778
G-011D
G-1800D
R
(WITHOUT PRICE)
CONTENTS
Page
1. SPECIFICATIONS: MODULE QW-4762/4778 ........................................... 1
2. OPERATION CHART: MODULE QW-4762/4778 ......................................2
3. DRAWINGS: MODULE QW-4762/4778
3-1. LCD DIAGRAM ............................................................................................ 10
3-2. CHECKING TERMINALS AND COMPONENTS ......................................... 12
4. EXPLODED VIEW: MODULE QW-4762/4778 .......................................... 13
5. PARTS LIST: MODULE QW-4762/4778 ................................................... 14
6. PRECAUTIONS FOR REPAIR: MODULE QW-4762/4778
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE ..................................... 18
6-2. ACCURACY CHECKING ............................................................................. 18
1. SPECIFICATIONS: MODULE QW-4762/4778
Item Detail
Battery CR1220
Battery life QW-4762: Approx. 3 years
QW-4778: Approx. 3 years
Current consumption QW-4762: 0.7690 µA maximum
QW-4778: 0.4970 µA maximum
Alarm system Piezo plate on Cover/Back
Accuracy ±15 sec./month
Accuracy setting system Trimmer capacitor
Accuracy checking See page 18
Functions
• LED light
Auto light switch, afterglow
• World time
29 time zones (27 cities), city code display, daylight saving on/off
• 1/100-second stopwatch
Measuring capacity: 59'59.99"
Measuring modes: Elapsed time, split time, 1st-2nd place times
• Countdown timer
Measuring unit: 1 second
Countdown range: 60 minutes
Countdown start time setting range: 1 to 60 minutes (1-minute incre-
ments)
Others: Auto-repeat, time up alarm, progress beeper on/off
• Daily alarms
5 Independent daily alarms (4 one-time alarms and 1 snooze alarm)
• Hourly time signal
• Auto-calendar (to year 2039)
• 12/24-hour format
• Regular timekeeping
Analog: 2 hands (Hour, minute (hand moves every 20 seconds))
Digital: Hour, minutes, seconds, pm, month, date, day
— 1 —
2. OPERATION CHART: MODULE QW-4762/4778
MODULE QW-4762
* The operation chart will be added in the next revision.
— 2 —
— 3 —
— 4 —
— 5 —
MODULE QW-4778
* The operation chart will be added in the next revision.
— 6 —
— 7 —
— 8 —
— 9 —
3. DRAWINGS: MODULE QW-4762/4778
3-1. LCD DIAGRAM
MODULE QW-4762
C4
L
LC3
C2
L
C1
L
5
1
L
4
1
L
3
1
L
2
1
L
11
L
L10
L 9
LC5
SEG.
L 3
L 4
L 5
L 6
L 7
L 8
L 9
L10
L11
L12
L13
L14
L15
L16
L17
L18
L19
L20
L21
L22
L23
L24
L25
L26
L27
L28
L29
L30
COM.
LC1
l 5
l 4
DST0
x15y5
x13y5
7
4
L
l 7
l 9
l 0
l 8
a 0
a 1
1
b 0
b
f 1
f 0
g 0
g 1
e 0
e 1
d 1
l 6
l 5
c 1
c 0
d 0
AUTO EL
l 4
LC2 LC3 LC4 LC5
l 6
l 3
e 1
d 1
l 7
l 2
f 1
g 1
c 1
e 0
d 0
SPL
g 0
c 0
SIG
x15y4 x15y3 x15y2
x13y4 x13y3 x13y2
l 1
l 3
ALM
x16y2x16y3x16y4x16y5
x14y2x14y3x14y4x14y5
l 2
a 1
b 1
a 0
b 0
SPL
pm0
y5
y1
x0
SNZ
8
3
L
L39
1
4
L
L42
L43
4
4
L
5
4
L
COM.
SEG.
L31
LC1
L32
L33
x10y5
L34
L35
L36
l 8
l 1
l 9
l 0
f 0
L37
L38
L39
L40
L41
L42
L43
L44
L45
x9y5
x8y5
x7y5
x6y5
x4y5
x3y5
x2y5
x1y5
x0y5
pm0
DST0
x16
SIG
ALM
7
2
L
8
2
L
9
2
L
L30
1
3
L
L32
3
L3
L34
L35
36
L
L37
LC2 LC3 LC4 LC5
x12y4 x12y2x12y3x12y5
LC5
4
LC
LC3
LC2
1
C
L
6
2
L
x11y2x11y3x11y4x11y5
x10y4 x10y2
x9y4 x9y2
x8y4
x7y4
x6y4
x5y4
x3y4
x2y4
x1y4 x1y2
x0y4
x10y3
x9y3
x8y3
x7y3
x6y3
x4y3x4y4
x3y3
x1y3
x0y3
x8y2
x7y2
x6y2
x5y2x5y3x5y5
x4y2
x3y2
x2y2x2y3
x0y2
x12y1
x11y1
x10y1
x9y1
x8y1
x7y1
x6y1
x5y1
x4y1
x3y1
x2y1
x1y1
x0y1
L46
L47
AUTO EL
L48
L49
L50
L51
L52
SNZ
x16y1
x15y1
x14y1
x13y1
— 10 —
MODULE QW-4778
L47
k 7
k 8
k 6
e 1
d 1
k 9
f 1
a 1
g 1
k 5
5
LC
4
LC
3
LC
2
LC
LC 1
L15
L14
L13
2
L1
L11
L10
L 9
L 8
L 7
l 2
l 4
l 3
l 1
l 5
l 6
AUTO EL
l 7
l 8
l 9
l 0
pm 0
k 0
y5
k 1
a 0
b 0
f 0
b 1
g 0
k 2
e 0
c 1
c 0
d 0
k 3
k 4
DST 0
SNZ
SPL
SIG
ALM
y1
x0
L33
L34
L35
L36
L37
8
L3
L39
L41
L42
L43
L44
45
L
x16
5
LC
4
LC
LC3
LC2
LC1
L26
7
L2
L28
9
L2
L30
L31
L32
COM.
SEG.
L 3
L 4
L 5
L 6
L 7
L 8
L 9
L10
L11
L12
L13
L14
L15
k 5
k 4
l 5
l 4
k 6
k 3
l 6
l 3
e 1
d 1
e 0
d 0
k 7
k 2
l 7
l 2
f 1
g 1
c 1
g 0
c 0
L16
L17
L18
L19
L20
L21
L22
L23
L24
L25
L26
L27
DST 0
x16y5
SPL
SIG
x16y4 x16y3 x16y2 x16y1
k 8
k 1
l 8
l 1
a 1
b 1
f 0
a 0
b 0
ALM
LC 5LC 4LC 3LC 2LC 1
k 9
k 0
l 9
l 0
SNZ
— 11 —
SEG.
L28
L29
L30
L31
L32
L33
L34
L35
L36
L37
L38
L39
L40
L41
L42
L43
L44
L45
L46
L47
L48
L49
L50
L51
L52
COM.
x15y5
x14y5
x13y5
x12y5
x11y5
x10y5
x9y5
x8y5
x7y5
x6y5
x5y5
x4y5
x3y5
x2y5
x1y5
x0y5
pm 0
x14y4 x14y3
x13y3x13y4
x12y4
x12y3
x11y4 x11y3
x10y4
x9y4
x8y4
x7y4
x6y4
x5y4
x10y3
x9y3
x8y3
x7y3
x6y3
x5y3
x4y4 x4y3
x3y4
x2y4
x1y4
x0y4
x3y3
x2y3
x1y3
x0y3
AUTO EL
LC 5LC 4LC 3LC 2LC 1
x15y1x15y2x15y3x15y4
x14y2
x14y1
x13y1x13y2
x12y2
x12y1
x11y2 x11y1
x10y2
x9y2
x8y2
x7y2
x6y2
x5y2
x4y2
x10y1
x9y1
x8y1
x7y1
x6y1
x5y1
x4y1
x3y2 x3y1
x2y2
x2y1
x1y1x1y2
x0y2
x0y1
3-2. CHECKING TERMINALS AND COMPONENTS
Short pad for switching modules
KI3-KI3/KI5: Open (No Soldering)
KI5-KI3/KI5: Short (Soldering)
GND-OVD: Short (Soldering)
GND-KI7: Open (No Soldering)
KI3/KI5
OVD
RLD1
KI5
Short pad for switching modules
KC2-KI2: Open (No Soldering)
KC3-KI2: Open (No Soldering)
KC4-KI2: Open (No Soldering)
KI4-KI1/KI4: Open (No Soldering)
KI3
L52
L47
L49
L48
K15
GND
OVD
VDD3
VDD3
LD1
VCH
LEDOUT
L50
K13
K13
K13/K15
K13/K15
K15
VSENSGND
GND
VDD1
GND
L1
KI2
L2
AC
VDD1
T1
T2
RLD1
KI6
GND
KI7
KI8
KI7
L46
L45
L 7
L 6
L 5
L 4
L 3
L51
VC2
VOSC
VC1
2. PCB ASS'Y
QW-4762
(76410299)
QW-4778
(76410299)
L44
L43
L42
L41
L40
L39
L38
L14
L13
L12
L11
L10
L 9
L 8
L37
L36
L35
L34
L33
L32
L31
LC2
L19
L18
L17
L16
L15
L20
L21
L22
L30
LC3
LC4
LC5
LC1
KI4
KC2
L23
L24
L25
KC4
L29
L28
L27
KI2
KI2
KC3
KI2
KC4
KC4
KI9
KC3
KI9
KC2
KI9
VDD2
BD
N1
GND
XT
N2
GND
GND
N3
XTB
GND
N4
KI9
KI1
KI1
KC1
KI1/KI4
KC2
KC3
LC2
LC1
L26
LC3
LC4
LC5
KI1/KI4
KI4
KI4
KI9
KC1
KC1
KI9
Short pad for N trimming
KI1/KI4
SENSOR/TILT
CAPACITOR/TRIMMER
OSCILLATOR/CRYSTAL
KI1/KI4
OVD
RLD1
KI1
Short pad for switching modules
KI1-KI1/KI4: Open (No Soldering)
GND
GND
VC2
VC1
GND
VOSC
VCH
VOSC
GND
KI2
KI4
KI9
KC1
L2
KC1
KI9
GND
XTB
XT
VDD2
KC1
L1
L2
XT
KI9
BD
VC1
VCH
VDD2
GND
GND
KI1
KI1
KI3
LL1
LL1
LL1
LL1
GND
LD1
GND
VDD2
LEDOUT
OVD
LEDOUT
OVD
GND
LD1
GND
VSENS
GND
COIL
VDD2
VDD2
RLD2
AC
VDD2
KI3/KI5
OVD
COIL
COIL
VDD2
RLD2
LD1
KI5
CUSHION 6
— 12 —
4. EXPLODED VIEW: MODULE QW-4762/4778
12 (10137169)
7 (10201541)
11 (10137168)
9 (10260667)
2 (76410299)
PCB Ass'y
8 (10243739)
19 (72240652)
20 (10109742)
18 (10224334)
6 (10016598)
7 (10201541)
QW4762: 4a (10250499)
4b (10250965)
QW4778: 4 (10253673)
QW4762: 3a (10250500)
3b (10250966)
QW4778: 3 (10253674)
14 (10209124)
16 (72300665)
13 (10201055)
17 (10201015)
Battery/Lithium
(CR1220)
15 (10243741)
10 (10255006)
1 (76404704)
13 (10201055)
5 (10055369)
— 13 —
5. PARTS LIST: MODULE QW-4762/4778
T
A
-
A
p
p
p
p
A
A
A
Y
A
)
A
)
A
)
A
)
A
p
(-)
R
MODULE QW-4762
QW-4762A
1 QW-4762AT-91
2 QW-4762AT-92
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.
Rank -----------------------------------------Important
C Rank ----------------------------------------
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".
ttention to order
1. The most of normal re
2. Minor
3. Main
similar models.
MAIN PARTS
Item Code No. Parts Name S
arts should be ordered carefully in consideration of the actual usage of your repair and your technical skills.
arts should be ordered and stocked appropriately in consideration of your parts usage anre repair usage for
10250688 MODULE/WITH MOVEMENT QW-4762AT-91 1
air or initial repair within 1year since released month can be done by main parts.
Not Important
ecification R
Q'TY
12
10250969 MODULE/WITH MOVEMENT QW-4762AT-92 1
1 76404704ANALOG BLOCK QW-2700MV-82TK 1 1
2 76410299 PCB ASS'
3a 10250500 LCD (3H-6H
3b 10250966 LCD (3H-6H
4a 10250499 LCD (9H-12H
4b 10250965 LCD (9H-12H
MINOR PARTS
Item Code No. Parts Name S
5 10055369 COIL ASS'Y Q369455*1 1 1 C
6 10016598 CONTACT/BATTERY
7 10201541 CUSHION 3766 RJQ527521-001V01 4 4 C
8 10243739 HOLDER/HOUR WHEEL RJQ533200-001V01 1 1 C
9 10260667 INTERCONNECTO
RJQ536438*001V01TK 1 1
S4762W-01THN 1
S4762W-02THP 1
S4762S-01THN 1
S4762S-02THP 1
ecification R
Q366836-1 1 1 C
RJQ536615-001V01 2 2 C
Q'TY
12
10 10255006 LABEL RJQ524829-001V04 1 1 C
11 10137168 PLATE/TERMINAL 2787-1 RJQ515398-001V02 1 1 C
Notes: Q - Used quantity
R - Rank
A : Important
C: Not Important
- 14 -
Item Code No. Parts Name Specification R
p
Q'TY
12
12 10137169 PLATE/TERMINAL 2787-2 RJQ515399-001V02 1 1 C
13 10201055 SCREW/1300-1 Q436969-1V03 3 3 C
14 10209124 SCREW 4323 RJQ526942-001V01 2 2 C
15 10243741 SHEET/INSULATION RJQ533683-001V01 1 1 C
16 72300665 SPRING/COIL 1349-1 Q450872-1 2 2 C
17 10201015 SPRING/COIL 2958 RJQ525615-001V01 1 1 C
18 10224334 SPRING/COIL 4359-1 RJQ529996-001V01 1 1 C
19 72240652 WASHER Q421691-1 1 1 C
20 10109742 WHEEL/HOUR Q372649-1 1 1 C
For the
rices 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
- 15 -
MODULE QW-4778
T
K
A
-
A
p
p
p
p
A
A
Y
A
)
A
)
A
p
(-)
R
QW-4778A
1 QW-4778AT-01T
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.
Rank -----------------------------------------Important
C Rank ----------------------------------------
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".
ttention to order
1. The most of normal re
2. Minor
3. Main
similar models.
MAIN PARTS
Item Code No. Parts Name S
arts should be ordered carefully in consideration of the actual usage of your repair and your technical skills.
arts should be ordered and stocked appropriately in consideration of your parts usage anre repair usage for
76410349 MODULE/WITH MOVEMENT QW-4778AT-01TK 1
1 76404704ANALOG BLOCK QW-2700MV-82TK 1
air or initial repair within 1year since released month can be done by main parts.
Not Important
ecification Q'TY R
1
2 76410299 PCB ASS'
3 10253674 LCD (3H-6H
4 10253673 LCD (9H-12H
MINOR PARTS
Item Code No. Parts Name S
5 10055369 COIL ASS'Y Q369455*1 1 C
6 10016598 CONTACT/BATTERY
7 10201541 CUSHION 3766 RJQ527521-001V01 4 C
8 10243739 HOLDER/HOUR WHEEL RJQ533200-001V01 1 C
9 10260667 INTERCONNECTO
10 10255006 LABEL RJQ524829-001V04 1 C
11 10137168 PLATE/TERMINAL 2787-1 RJQ515398-001V02 1 C
12 10137169 PLATE/TERMINAL 2787-2 RJQ515399-001V02 1 C
13 10201055 SCREW/1300-1 Q436969-1V03 3 C
RJQ536438*001V01TK 1
S4778W-01THP 1
S4778S-01THP 1
ecification Q'TY R
1
Q366836-1 1 C
RJQ536615-001V01 2 C
14 10209124 SCREW 4323 RJQ526942-001V01 2 C
15 10243741 SHEET/INSULATION RJQ533683-001V01 1 C
Notes: Q - Used quantity
R - Rank
A : Important
C: Not Important
- 16 -
Item Code No. Parts Name Specification Q'TY R
p
1
16 72300665 SPRING/COIL 1349-1 Q450872-1 2 C
17 10201015 SPRING/COIL 2958 RJQ525615-001V01 1 C
18 10224334 SPRING/COIL 4359-1 RJQ529996-001V01 1 C
19 72240652 WASHER Q421691-1 1 C
20 10109742 WHEEL/HOUR Q372649-1 1 C
For the
rices 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
- 17 -
6. PRECAUTIONS FOR REPAIR: MODULE QW-4762/4778
6-1. 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.
Metallic tweezers
6-2. 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 D 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, except for D 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.
A
C
QW-4762
B
D
A
C
QW-4778
B
D
— 18 —
CASIO COMPUTER CO.,LTD.
Overseas Service Division
Shibuya-ku, Tokyo 151-8543, Japan
6-2, Hon-machi 1-Chome
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