Casio QW-2605 Service Manual
SERVICE MANUAL
& PARTS LIST
REF. NO. S/M-813
JUN. 2003
MODULE NO.
QW-2605
BGT-2000
R
(WITHOUT PRICE)
CONTENTS
Page
1. SPECIFICATIONS: MODULE QW-2605 .................................................... 1
2. DRAWINGS: MODULE QW-2605
2-1. LCD DIAGRAM ............................................................................................. 2
2-2. CIRCUIT DIAGRAM ...................................................................................... 3
2-3. CHECKING TERMINALS AND COMPONENTS .......................................... 4
3. EXPLODED VIEW: MODULE QW-2605 .................................................... 5
4. PARTS LIST: MODULE QW-2605 ............................................................. 6
5. PRECAUTIONS FOR REPAIR: MODULE QW-2605
5-1. AC (ALL CLEAR) AND REMOVING OF MODULE ......................................7
5-2. ACCURACY CHECKING .............................................................................. 7
6. TROUBLESHOOTING FOR TIME RECEPTION: MODULE QW-2605 ..... 8
1. SPECIFICATIONS: MODULE QW-2605
Item Detail
Battery CR-1616
Battery life Approx. 2 years
Current consumption 1.24 µA maximum
Alarm system Piezo plate on Cover/Back
Accuracy ±15 sec./month
Accuracy setting system Trimmer capacitor
Accuracy checking See page 7
Functions • Electro-luminescent backlight
Afterglow
• Time calibration signal reception
Auto receive (Three times a day at 2:00AM, 4:00AM and 6:00AM)
Manual receive
Last date/time received display
• ReceivableTime 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)
• Time Recorder
Memory for 50 records, each containing hr, min, sec
• Date Alert
a date alert indicator and the currente date flash for 24 hr after the
aler date arrivers in the Timekeeping Mode
• World Time
29 time zones (28 cities), daylight saving time on/off
• 1/100-sec.stopwatch
Measuring capacity: 23:59'59.99"
Measuring modes: Elapsed time, split time, 1st-2nd place times
• Daily alarms
5 independent daily alarms(4 one-time alarms and 1 snooze alarm)
• Hourly alarms
• Auto-calendar (to year 2039)
• 12/24-hr format
• Regular timekeeping:
hr, min, sec, pm, month, date, day
— 1 —
2. DRAWINGS: MODULE QW-2605
2-1. LCD DIAGRAM
alm
ae5
snz
rc1
sig
col1
a8
ae9
24
p
f4
b5
c5
e4
b9
c9
a4
g4
c4
d4
y4
b8
f8
g8
hyp1
c8
e8
d8
col0
b4
f3
hyp0
e3
rc2
rc3
a7
f7
g7
e7
d7
a3
g3
d3
a6
b6
f6
b7
g6
e6
c7
c6
d6
alert
a2
f2
b3
e2
c3
b2
g2
c2
d2
rc3
rc2
rc1
a1
f1
g1
e1
d1
a0
f0
b1
c1
dst
b0
g0
c0
e0
d0
SEG.
L 3
L 4
L 5
L 6
L 7
L 8
L 9
L 10
L 11
L 12
L 13
L 14
L 15
L 16
L 17
L 18
LC5
LC4
LC3
LC2
LC1
COM.
LC1 LC2 LC3 LC4
rc1
rc2
rc3
sig
b6
a6
snz
b7
a7
f7
x14y0
x13y0
x12y0
x11y0
x10y0
x9y0
a0
f0
alert
c6
g6
f6
c7
g7
e7
x14y1
x13y1
x12y1
x11y1
x10y1
x9y1
L27
L26
x14y2
x13y2
x12y2
x11y2
x10y2
x9y2
y0
x0 x14
ok
L34
L33
L32
L31
L30
L29
b0
g0
e0
b1
a1
d6
e6
a2
d7
b3
L28
c0
d0
c1
g1
b2
g2
c3
x14y3
x13y3
x12y3
x11y3
x10y3
x9y3
L25
L24
L23
L22
L21
L20
L19
LC5
SEG.
L 19
L 20
L 21
dst
d1
f1
e1
c2
d2
f2
e2
fwd
x14y4
x13y4
x12y4
x11y4
x10y4
x9y4
L 22
L 23
L 24
L 25
L 26
L 27
L 28
L 29
L 30
L 31
L 32
L 33
L 34
fwdrew
L18
L17
L16
L15
L14
L13
L12
L11
L10L9L8L7L6L5L4
COM.
LC1 LC2 LC3 LC4 LC5
x8y0
x7y0
x6y0
x5y0
x4y0
x3y0
x2y0
ae9
b9
a8
b8
alm
ok
x0y0
x1y0
x8y1
x7y1
x6y1
x5y1
x4y1
x3y1
x2y1
col1
hyp1
rew
x0y1
x1y1
c9
f8
g8
c8
x8y2
x7y2
x6y2
x5y2
x4y2
x3y2
x2y2
p
e8
d8
a4
col0
hyp0
a3
x0y2
x1y2
L3
x8y3
x7y3
x6y3
x5y3
x4y3
x3y3
x2y3
b5
24
f4
g4
b4
f3
g3
x0y3
x1y3
x8y4
x7y4
x6y4
x5y4
x4y4
x3y4
x2y4
ae5
c5
e4
d4
c4
e3
d3
x0y4
x1y4
— 2 —
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