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Casio GW-002J Service Manual & Parts List

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S
M
ERVICE
ANUAL
& PARTS LIST
REF. NO. S/M-883
MAR. 2005
MODULE NO.
QW-2914
GW-002J
Ver.1 : Apr. 2007
INDEX
(WITHOUT PRICE)
R

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  Summary of Contents for Casio GW-002J

  • Page 1 ERVICE ANUAL & PARTS LIST REF. NO. S/M-883 MAR. 2005 MODULE NO. QW-2914 GW-002J Ver.1 : Apr. 2007 INDEX (WITHOUT PRICE)
  • Page 2: Table Of Contents

    CONTENTS Page 1. SPECIFICATIONS: MODULE QW-2914 ............ 1 2. OPERATION CHART: MODULE QW-2914 ..........2 3. DRAWINGS: MODULE QW-2914 3-1. LCD DIAGRAM .................... 10 3-2. CIRCUIT DIAGRAM ..................11 3-3. CHECKING TERMINALS AND COMPONENTS ......... 12 4. EXPLODED VIEW: MODULE QW-2914 ........... 14 5.
  • Page 3: Specifications: Module Qw-2914

    1. SPECIFICATIONS: MODULE QW-2914 Item Detail Battery CTL1616 (Storage battery) Note: Use CTL1616 only. Other storage battery or CR1616 can cause damage to the watch. Battery life Approx. 8.5 months (from full charged condition) 1.161 µA maximum Current consumption Alarm system Piezo plate on Cover/Back ±15 sec./month Accuracy...
  • Page 4: Operation Chart: Module Qw-2914

    2. OPERATION CHART: MODULE QW-2914 — 2 —...
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  • Page 12: Drawings: Module Qw-2914

    3. DRAWINGS: MODULE QW-2914 3-1. LCD DIAGRAM anta2 HIGH anta1 anta0 LCHARGE col0 RECOVER SPL1 AUTOEL PSAVE anta2 x8y2 x8y3 x8y4 x8y0 x8y1 anta1 x7y2 x7y3 x7y4 x7y0 x7y1 anta0 x6y2 x6y3 x6y4 x6y0 x6y1 x5y2 x5y3 x5y4 x5y0 x5y1 HIGH x4y2 x4y3...
  • Page 13: Circuit Diagram

    3-2. CIRCUIT DIAGRAM — 11 —...
  • Page 14: Checking Terminals And Components

    3-3. CHECKING TERMINALS AND COMPONENTS 1-chip type (pre-change) Short pad for switching modules LEDOUT LEDOUT LEDOUT VDD2 VDD2 Short pad for R trimming 12a. PCB ASS'Y SCIN Short pad for N trimming (7640 8263) SCIN SCIN GNDB VDD2 SENSOR/TILT FET-D FET-S CUSHION 6 VDD2...
  • Page 15 2-chip type (post-change) Short pad for switching modules LEDOUT VDD2 LEDOUT VDD2 LEDOUT Short pad for R trimming GNDB SCIN GND R1 SCIN 12b. PCB ASS'Y GND SCIN (7641 0226) VDD2 Short pad for N trimming VDD2 CUSHION 6 SENSOR/TILT OSCILLATOR/CRYSTAL CUSHION 6 VDD2...
  • Page 16: Exploded View: Module Qw-2914

    4. EXPLODED VIEW: MODULE QW-2914 11 (1016 9827) 16 (1017 2600) 7 (1017 2603) 19 (1010 6532) 9 (1017 2597) 19 (1010 6532) 20 (7210 9058) 1-chip type : 15a (1017 2599) 2-chip type : 15b (1022 1067) 18 (7230 1045) 1-chip type : 12a (7640 8263) 2-chip type : 12b (7641 0226)
  • Page 17: Parts List: Module Qw-2914

    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 7640 8204 MODULE/WITH MOVEMENT QW-2914YC-01TK GW-002J-8A 1006 5657 BATTERY/STORAGE CTL1616 QW-2914YC-01TK 1009 7666 CAPACITOR/TRIMMER CTZ2E-25C-W2-P QW-2914YC-01TK 1016 8959 CONTACT/BATTERY 2730...
  • Page 18: Precautions For Repair: Module Qw-2914

    6. PRECAUTIONS FOR REPAIR: MODULE QW-2914 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.
  • Page 19: Solar Cell-Pcb Ass'y Contact Checking

    6-3. SOLAR CELL-PCB ASS'Y CONTACT CHECKING Check a Solar cell and PCB ass'y are contacted correctly by contact spring, when a module is disassembled. To enter TEST mode. 1) While pressing D button, press A and B buttons at the normal timekeeping mode. Check a Solar cell and PCB ass'y contact in the following order.
  • Page 20: Troubleshooting For Time Reception: Module Qw-2914

    7. TROUBLESHOOTING FOR TIME RECEPTION: MODULE QW-2914 START Check whether the Home City code is selected correctly. Perform MANUAL time calibration signal reception Signal reception OK? Perform AUTO time calibration signal reception Signal reception OK? Replace the PCB ass'y Signal reception OK? Replace the Case center ass'y with antenna...
  • Page 21: Changes To The Pcb Ass'y

    8. CHANGES TO THE PCB ASS'Y Starting from the June 2006 production run, a change was made to the PCB ass'y. (1-chip type → 2-chip type, as shown below) LEDOUT LEDOUT VDD2 LEDOUT VDD2 LEDOUT LEDOUT LEDOUT VDD2 VDD2 GNDB SCIN GND R1 SCIN...
  • Page 22 Ver. 1 : Apr. 2007 Correction of pages 12, 13, 14, 15 and 19 CASIO COMPUTER CO.,LTD. Overseas Service Division 6-2, Hon-machi 1-Chome Shibuya-ku, Tokyo 151-8543, Japan...

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Qw-2914