Casio LWQ-160DE, LWQ-160LE Service Manual & Parts List
S
ERVICE
M
ANUAL
& PARTS LIST
MODULE NO.
QW-4791
REF. NO. S/M-998
AUG. 2007
LWQ-160DE
LWQ-160LE
Ver.1 : May. 2008
(WITHOUT PRICE)
CONTENTS
Page
1. SPECIFICATIONS: MODULE QW-4791 ..................................................... 1
2. DRAWINGS: MODULE QW-4791
2-1. CHECKING TERMINALS AND COMPONENTS ............................................ 2
3. EXPLODED VIEW: MODULE QW-4791 ..................................................... 3
4. PARTS LIST: MODULE QW-4791 ............................................................... 4
5. PRECAUTIONS FOR REPAIR: MODULE QW-4791
5-1. AC (ALL CLEAR) AND REMOVING OF MODULE ....................................... 6
5-2. MEASURING CURRENT CONSUMPTION ................................................... 6
5-3. ACCURACY CHECKING ............................................................................... 7
5-4. TIME CALIBRATION SIGNAL TEST MODE .................................................. 8
APPENDIX
Operation Guide 4791
1. SPECIFICATIONS: MODULE QW-4791
Item Detail
Battery
Battery life
Current consumption
Alarm system
Accuracy
Accuracy setting system
Accuracy checking
Functions:
ESR920W
Approx. 2 years
0.24 µA maximum:µA maximum
See page 6
-
±20 sec./month
Chip capacitor selection
See page 7
• Time calibration signal reception
Auto receive
Manual receive
• Time Calibration Signal
Receivable Time Calibration Signals
Fort Collins, Colorado (Call Sign: WWVD, Frequency : 60kHz)
Rugby, England (Call Sign: MSF, Frequency: 60kHz)
Mainflingen, Germany (Call Sign: DCF77, Frequency: 77.5kHz)
Fukushima, Japan (Call Sign: JJY, Frequency: 40kHz)
Fukuoka/Saga, Japan (Call Sign: JJY, Frequency: 60kHz)
• Regular timekeeping:
Analog: 3 hands (Hour, minutes, seconds)
— 1 —
2. DRAWINGS: MODULE QW-4791
R1
R3
DIO13
DIO7
DIO6
XT
VOSC
GND
XT
XT
XTB
VCH GND
VOSC
GND
VDD2
GND
GND
T4
T3
AC
O6
PM_RES
DIO4
O5
O3
VDD2
O4
VCH
T1
DIO3
DIO13
R1
R2
T2
DIO7
O1
O2
SCR
R2
R3
GND
DIO5
VSC
DIO2
DIO1
SCIN
VCC
GND
VSC
GND
GND
GND
GND
GND
DIO14
GND
GND
GND
GNDB
P2'
FET-D
P2
GNDB
GND
GND
VOSC
AC
VDD2
DIO4
O6
P2'
P1' P1'
FET-S'
P1'
P2'
P2
FET-S
VCC
VSC
P1'
FET-S'
VDD2
DIO1
SCIN
GND
GND
SCR
DIO2
P5
P7
P7
P4
GND
Ccp
Ccp
P9
P7
P5
VSC
VDD2
O5
O1
O4
P1
DIO12
DIO3
VCH
PM_RES
GND
SCIN
SCI
N
OSCILLATOR/CRYSTAL
2. PCB ASS'Y
(76410798)
TAPE/ADHESIVE 2306
Short pad for switching modules
D1014-GND: Open (No Soldering)
D1013-GND: Short (Soldering)
2-1. CHECKING TERMINALS AND COMPONENTS
— 2 —
3. EXPLODED VIEW: MODULE QW-4791
17 (72270294)
2 (76410798)
PCB ass'y
8 (10212747)
9 (10209123)
18 (10209118)
1 (76409228)
12 (10209124)
11 (10009244)
15 (10212751)
13 (10234346)
6 (10212752)
3 (19101199)
Battery storage (ESR920W)
5 (10209109)
16 (10212748)
13 (10234346)
7 (10237097)
14 (10212750)
10 (10140782)
4 (10209108)
11 (10009244)
— 3 —
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