Casio LWQ-160DE Service Manual & Parts List
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Casio LWQ-160DE Service Manual & Parts List

Module no. qw-4791
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S
M
ERVICE
ANUAL
& PARTS LIST
REF. NO. S/M-998
AUG. 2007
MODULE NO.
QW-4791
LWQ-160LE
LWQ-160DE
Ver.1 : May. 2008
INDEX
(WITHOUT PRICE)

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Summary of Contents for Casio LWQ-160DE

  • Page 1 ERVICE ANUAL & PARTS LIST REF. NO. S/M-998 AUG. 2007 MODULE NO. QW-4791 LWQ-160LE LWQ-160DE Ver.1 : May. 2008 INDEX (WITHOUT PRICE)

  • Page 2: Table Of Contents

    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.

  • Page 3: Specifications: Module Qw-4791

    1. SPECIFICATIONS: MODULE QW-4791 Item Detail Battery ESR920W Battery life Approx. 2 years Current consumption 0.24 µA maximum:µA maximum See page 6 Alarm system Accuracy ±20 sec./month Accuracy setting system Chip capacitor selection Accuracy checking See page 7 Functions: • Time calibration signal reception Auto receive Manual receive •...

  • Page 4: Drawings: Module Qw-4791

    2. DRAWINGS: MODULE QW-4791 2-1. CHECKING TERMINALS AND COMPONENTS Short pad for switching modules D1014-GND: Open (No Soldering) D1013-GND: Short (Soldering) TAPE/ADHESIVE 2306 DIO2 VDD2 DIO14 DIO13 DIO3 VOSC DIO7 DIO6 DIO5 SCIN VOSC DIO13 DIO7 DIO1 GNDB OSCILLATOR/CRYSTAL PM_RES DIO4 VDD2 VDD2...

  • Page 5: Exploded View: Module Qw-4791

    3. EXPLODED VIEW: MODULE QW-4791 8 (10212747) 12 (10209124) 9 (10209123) 17 (72270294) 18 (10209118) 1 (76409228) 16 (10212748) 4 (10209108) 5 (10209109) 11 (10009244) 11 (10009244) 15 (10212751) 2 (76410798) PCB ass'y 13 (10234346) 13 (10234346) 6 (10212752) 7 (10237097) 3 (19101199) Battery storage (ESR920W) 14 (10212750)

  • Page 6: Parts List: Module Qw-4791

    4. PARTS LIST: MODULE QW-4791 QW-4791AT 1 QW-4791AT-01 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 ----------------------------------------- Important C Rank ----------------------------------------- Not Important 3.
  • Page 7 Item Code No. Parts Name Specification Q'TY 72270294 WASHER 745 Q436294A-1 10209118 WHEEL/HOUR 4323 RJQ527219-001V01 For the prices and minimum order/supply quantities of the above parts, refer to the Parts Price List P.P.L.-645. Notes: R - Rank A: Important C: Not Important —...

  • Page 8: Precautions For Repair: Module Qw-4791

    5. PRECAUTIONS FOR REPAIR: MODULE QW-4791 5-1. AC (ALL CLEAR) AND REMOVING OF MODULE 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.

  • Page 9: Accuracy Checking

    5-3. ACCURACY CHECKING Module confirmation mode 1) Press the button in the Normal Timekeeping Mode to display the result of the signal receiv-  ing test. 2) In the Signal Receiving Test Result Mode, press the button twice while holding down the ...

  • Page 10: Time Calibration Signal Test Mode

    5-4. TIME CALIBRATION SIGNAL TEST MODE In the Accuracy Checking Mode, press the button twice to switch to the signal receiving standby  state. (The last receiving station is indicated with the second hand.) If the last receiving station is reset with the [All Clear] function, the station to first receive the signal is indicated.

  • Page 11: Operation Guide 4791

    MO0705-EA Operation Guide 4791 Getting Acquainted Congratulations upon your selection of this CASIO watch. To get the most out of your About This Manual purchase, be sure to read this manual carefully. • Button operations are indicated using the letters shown Minute hand in the illustration.
  • Page 12 Operation Guide 4791 Adjusting the Home Positions If the time settings are wrong even after the time calibration signal is received About Auto Receive normally, use the following procedure to adjust their home positions. The watch receives the time calibration signal automatically up to six times a day. When any auto receive is successful, the remaining auto receive operations are not To adjust the home positions performed.
  • Page 13 Operation Guide 4791 Radio-controlled Timekeeping Precautions • Strong electrostatic charge can result in the wrong time being set. • The time calibration signal bounces off the ionosphere. Because of this, such factors as changes in the reflectivity of the ionosphere, as well as movement of the ionosphere to higher altitudes due to seasonal atmospheric changes or the time of day may change the reception range of the signal and make reception temporarily impossible.
  • Page 14 Ver. 1 : May. 2008 Correction of pages 1 and 6 CASIO COMPUTER CO.,LTD. Overseas Service Division 6-2, Hon-machi 1-Chome Shibuya-ku, Tokyo 151-8543, Japan...

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Lwq-160le

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