Casio QW-2605 User manual

SERVICE MANUAL
& PARTS LIST
(WITHOUT PRICE)
QW-2605
MODULE NO.
R
REF. NO. S/M-813
JUN. 2003
BGT-2000

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 —
1. SPECIFICATIONS: MODULE QW-2605
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
Item Detail

— 2 —
2. DRAWINGS: MODULE QW-2605
2-1. LCD DIAGRAM
SEG. COM. SEG. COM.
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
L 19
L 20
L 21
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
LC1 LC2 LC3 LC4 LC5
rc1
rc2
rc3
sig
b6
a6
snz
b7
a7
f7
x14y0
x13y0
x12y0
x11y0
x10y0
x9y0
x8y0
x7y0
x6y0
x5y0
x4y0
x3y0
x2y0
ae9
b9
a8
b8
alm
ok
x0y0
x1y0
a0
f0
alert
c6
g6
f6
c7
g7
e7
x14y1
x13y1
x12y1
x11y1
x10y1
x9y1
b0
g0
e0
b1
a1
d6
e6
a2
d7
b3
x14y2
x13y2
x12y2
x11y2
x10y2
x9y2
x8y1
x7y1
x6y1
x5y1
x4y1
x3y1
x2y1
c9
f8
g8
c8
col1
hyp1
rew
x0y1
x1y1
x8y2
x7y2
x6y2
x5y2
x4y2
x3y2
x2y2
p
e8
d8
a4
col0
hyp0
a3
x0y2
x1y2
LC1 LC2 LC3 LC4 LC5
c0
d0
c1
g1
f1
b2
g2
f2
c3
x14y3
x13y3
x12y3
x11y3
x10y3
x9y3
x8y3
x7y3
x6y3
x5y3
x4y3
x3y3
x2y3
b5
24
f4
g4
b4
f3
g3
x0y3
x1y3
dst
d1
e1
c2
d2
e2
fwd
x14y4
x13y4
x12y4
x11y4
x10y4
x9y4
x8y4
x7y4
x6y4
x5y4
x4y4
x3y4
x2y4
ae5
c5
e4
d4
c4
e3
d3
x0y4
x1y4
alm
snz
sig
rc1 rc2
rc3
dst
rc3
rc2
rc1
a0
b0
c0
d0
e0
f0
g0
a1
b1
c1
d1
e1
f1
g1
a2
b2
c2
d2
e2
f2
g2
a3
b3
c3
d3
e3
f3
g3
a4
b4
c4
d4
e4
f4
g4
b5
c5
ae5
a6 b6
c6
d6
e6
f6 g6
a7 b7
c7
d7
e7
f7 g7
a8
b8
c8
d8
e8
f8g8
b9
c9
ae9
24
palert
col1
hyp1
col0
y0
y4
x0 x14
hyp0
fwdrew
ok
L3 LC5 LC4 LC3 LC2 LC1 L34 L33 L32 L31 L30 L29 L28 L27 L26 L25 L24 L23 L22 L21 L20 L19 L18 L17 L16 L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4

—3 —
2-2. CIRCUIT DIAGRAM
LSI
TOTAL 93PINS
BONDING 67PINS
GND VDD2
BAT
VCHVDD3 VC1 VC2
C3
C2 C4
XTB
Xtal
L3 - - - - L34 LC1 - - - LC5
CT
LCD ( 4.5V 1/3b 1/5d )
LD1
S1
SB
SA
VDD1
C1
BD
LL1
Tr1
XT
T1 T2 KI1 KI2 KI3 KI4 KI9 KI6 KI7 KI8 KI5
N1
PZ
VOSC
C5
SDO
AC
KC4
LD3KC3 LD2KC2
KC1
N2
N3
✽4 ✽4
✽3
N4
✽4
Z
✽3 ✽3 ✽3
CSB
✽4
+
C6
SDI SCK
✽3
L1 L2
✽3
✽1✽1
✽1
Creg
IN1 IN2 PON OUT2
REG
OUT1
AGC
FIL1 FIL2
TCO
REC DEC1 GND
HOLD
VCC
1 2 3
16 15 14
4 5 6 7 8
13 12
11
10
9
Cxt
Crl1
Rxt2
Ccp9
Cf12 Cagc
Cbat
Rbat
Xtal2
IC
ANT
Rant2
Cf13
Rcp
Rxt3
Xtal3
Crl2
Crl3
Crh3
Crh2
Crh1
Rant1
Rs Rd
Cc
FET
✽2 ✽2 ✽2 ✽2
✽3
✽3
Rpd
✽1
✽7
✽1
✽1✽1
Rant3
CLF1
E’Cel
EL INV
LL2
L+ VOUT L- GND
CLF2
V+
BACK
FRONT
✽8
✽6
✽5
L35 - - - L52
✽1
DEC2
✽1
✽1. No bonding ✽2.
GND-KI5: Short (Soldering)
GND-KI6: Open (No Soldering) GND-KI7: Short (Soldering) GND-KI8: Open (No Soldering)
✽3. Latch type key
✽ 4.
Short (Soldering) (N trimming)
✽5. Normal Low ✽ 6. LD2 (Normal Low) is used in this module. ✽ 7. LD3 (Normal High) is used in this module. ✽ 8. Rant1 is not mounted in this module.

—4 —
2-3. CHECKING TERMINALS AND COMPONENTS
Top view of P.C.B. ass'y Bottom view of P.C.B. ass'y
KI1
VOSC
VDD3
GNDVCH
GND
GND
GND
CLF1CLF2
2
16
16
GND
GND
13 12 KI9
GNDGND
GND
GND
cp
cp
9
3GND
DS
S
GND
D
GND
2
D
VOUT
VDD1
KI2 KI3 KI4
KI8 KI7
KI6
KI5
5
GND
GND
N1
N2
N3
N4
GND
GND
GND
GND
GND
GND
3 VDD2
14
XTXTB
L
BD
LD2KC2
SD
16
KC1
14 13 12 KI9
VDD2
9
87
GND
54321
VDD2
CLF1
CLF2
LD3KC3 GND
L-
VOUT
L+
GND
7
VDD2
VC2 VC1
GND
L
L-L+
7
XT2 7
XT3
44
XT2XT3
AC
VCH
VOSC
VOUT
VDD2
GND
VDD2
KI1
L
L
2
1
S
VC1
LD3KC3
GND
KI3 KI2
KI9
KI4
VDD2
GND
GND
XT
GND
LD2KC2
Capacitor/Chip
Cf13 Capacitor/Chip
Cf12
Resistor/Chip
Resistor/Chip
Rpd
Resistor/Chip
Rxt2
Resistor/Chip
Rxt3
Resistor/Chip
Rbat
Resistor/Chip
Cbat
Coil
LL1
Coil
LL2
Inverter
INV
Capacitor/Chip
Cel
Oscillator/Crystal
Xtal
6. Oscillator/Crystal
(7110 6337)
Varistor
Z
Detection IC
IC
Capacitor/Chip
C5
Capacitor/Chip
C4
Capacitor/Chip
C2
Capacitor/
Chip
C1
Capacitor/Chip
C3
Capacitor/Chip
C6
3. Capacitor/
Trimmer
(1001 0950)
CT
7. Cushion/506
(7211 9631)
7. Cushion/506
(7211 9631)
2. Tape/Adhesive
(1000 6652)
1. PCB ASS'Y
(7640 5851)
Rant2
Resistor/Chip
Rant3
Resistor/
Chip
Capacitor/Chip
Creg
Capacitor/Chip
Cagc
Ccp9
Capacitor/Chip
Rcp Resistor/Chip
Cxt Capacitor/
Chip
Xtal3
Oscillator/Crystal
Xtal2
Transistor
Tr1
Transistor
FET
Cc
Resistor/Chip
Rd
Resistor/Chip
Rs

—5 —
3. EXPLODED VIEW: MODULE QW-2605
5 (1010 0101)
4 (1010 0100)
16 (7230 1000)
15 (1009 3588)
10 (7231 1960)
14 (7207 8852)
9 (7231 1777)
8 (7225 1792)
11 (1009 3587)
17 (1005 8538)
13 (7229 0790)
12 (1009 3594)
1 (7640 5851)
PCB ass'y
Battery Lithium
(CR1616)

4. PARTS LIST: MODULE QW-2605
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 ---------------------------------------- Very Important
B Rank ---------------------------------------- Important
C Rank ---------------------------------------
-
Less 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".
Item Code No. Parts Name Specification Applicable Q R
MODULE/WITHOUT MOVEMENT QW-2605YCSA-01 BGT-2000-1/2/9
BGT-2000L-2B/4B
< The module QW-2605 is "built-in type" which is assembled directly to
the case, therefore the module as the spare parts is not available. >
1 7640 5851 PCB ASS'Y Q255854*1TK QW-2605YCSA Common 1 A
2 1000 6652 TAPE/ADHESIVE Q465964-1 QW-2605YCSA Common 1 C
3 1001 0950 CAPACITOR/TRIMMER CTZ2E-30C-W2-P QW-2605YCSA Common 1 B
4 1010 0100 PLATE/SHIELD Q470819-1 QW-2605YCSA Common 1 C
5 1010 0101 SHEET/INSULATION Q470817-1 QW-2605YCSA Common 1 C
6 7110 6337 OSCILLATOR/CRYSTAL CFS-145OR07 QW-2605YCSA Common 1 B
7 7211 9631 CUSHION/506 Q49364-1 QW-2605YCSA Common 2 C
8 7225 1792 CONTACT/BATTERY(-) Q36151A-1 QW-2605YCSA Common 1 C
9 7231 1777 HOLDER Q456843-1 QW-2605YCSA Common 1 C
10 7231 1960 HOLDER/BATTERY Q254197-1 QW-2605YCSA Common 1 C
11 1009 3587 HOUSING Q152450A-1 QW-2605YCSA Common 1 C
12 1009 3594 INTERCONNECTOR Q470203-1 QW-2605YCSA Common 1 C
13 7229 0790 LABEL/1856 Q461569-1 QW-2605YCSA Common 1 C
14 7207 8852 SCREW Q430508A-1 QW-2605YCSA Common 1 B
15 1009 3588 SUPPORTER/PCB ASS'Y Q152451-1 QW-2605YCSA Common 1 C
16 7230 1000 SPRING/COIL Q458175A-1 QW-2605YCSA Common 1 B
BATTERY/LITHIUM CR1616 QW-2605YCSA Common 1
For the
p
rices and minimum order/su
pp
l
y
q
uantities of the above
p
arts, refer to the Parts Price List P.P.L.-595.
Notes: Q - Used quantity
R - Rank
— 6 —

—7 —
5. PRECAUTIONS FOR REPAIR: MODULE QW-2605
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.
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 A button, press Band Lbuttons 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.
AC
QW-2605

—8 —
6. TROUBLESHOOTING FOR TIME RECEPTION: MODULE QW-2605
Yes
No
Yes
No
Yes
No
Yes
No
START
Check whether the Home City
code is selected correctly.
Perform MANUAL time
calibration signal reception
OK
Perform AUTO time
calibration signal reception
Replace the PCB ass'y
Signal
reception OK?
Signal
reception OK?
Signal
reception OK?
Replace the Case center
ass'y with antenna
Signal
reception OK?
OK
OK
OK
There is a possibility of the bad location for reception.