Casio QW-2812 Service Manual & Parts Manual
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Casio QW-2812 Service Manual & Parts Manual

Casio QW-2812 Service Manual & Parts Manual

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S
M
ERVICE
ANUAL
& PARTS LIST
REF. NO. S/M-848
FEB. 2004
MODULE NO.
QW-2812
WVH-500D
Ver.1 : Apr. 2004
INDEX
(WITHOUT PRICE)
R

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Summary of Contents for Casio QW-2812

  • Page 1 ERVICE ANUAL & PARTS LIST REF. NO. S/M-848 FEB. 2004 MODULE NO. QW-2812 WVH-500D Ver.1 : Apr. 2004 INDEX (WITHOUT PRICE)

  • Page 2: Table Of Contents

    CONTENTS Page 1. SPECIFICATIONS: MODULE QW-2812 ............ 1 2. OPERATION CHART: MODULE QW-2812 ..........2 3. DRAWINGS: MODULE QW-2812 3-1. LCD DIAGRAM ..................... 7 3-2. CIRCUIT DIAGRAM ..................8 3-3. CHECKING TERMINALS AND COMPONENTS .......... 9 4. EXPLODED VIEW: MODULE QW-2812 ........... 10 5.

  • Page 3: Specifications: Module Qw-2812

    1. SPECIFICATIONS: MODULE QW-2812 Item Detail Battery CTL1616 (Storage battery) Note: Use CTL1616 only. Other storage battery or CR1616 can cause damage to the watch. Battery life Approx. 7 months (from full charged condition) 1.273 µA maximum Current consumption Alarm system Piezo plate on Cover/Back ±15 sec./month...

  • Page 4: Operation Chart: Module Qw-2812

    2. OPERATION CHART: MODULE QW-2812 Getting Acquainted Congratulations upon your selection of this CASIO watch. To get the most out of your About This Manual purchase, be sure to carefully read this manual and keep it on hand for later reference •...
  • Page 5 • Signal reception is normally better at night than during the day. To turn auto receive on and off • Time calibration signal reception takes from two to seven minutes. Take care that 1. In the Timekeeping Mode, hold down A until the city you do not perform any button operations or move the watch during this time.
  • Page 6 Should you notice problems with getting the rechargeable battery to a full charge, contact your dealer or CASIO distributor about having it replaced. • The rechargeable battery should be replaced with a CASIO-specified CTL1616 battery only.
  • Page 7 • The flashing charge indicator (CHG) at Level 3 tells you that battery power is very Press C . / Press A. low, and that exposure to bright light for charging is required as soon as possible. Transmitter/ • At Level 4, all functions are disabled and settings return to their initial factory Auto City Settings City Code...
  • Page 8 To recover from the sleep state To input characters 1. When the cursor is on the display, use B and D to Perform any one of the following operations. • Move the watch to a well-lit area. It can take up to two seconds for the display to turn cycle through the available letters, numbers and symbols, in the sequence shown below.

  • Page 9: Drawings: Module Qw-2812

    3. DRAWINGS: MODULE QW-2812 3-1. LCD DIAGRAM DST0 COL0 COL1 DST1 COM. COM. SEG. SEG. X14Y4 X14Y0 X14Y1 X14Y2 X14Y3 X13Y1 X13Y4 X13Y0 X13Y2 X13Y3 X12Y0 X12Y1 X12Y2 X12Y4 X12Y3 X11Y0 X11Y1 X11Y2 X11Y4 X11Y3 X10Y0 X10Y1 X10Y2 X10Y4 X10Y3...

  • Page 10: Circuit Diagram

    3-2. CIRCUIT DIAGRAM — 8 —...

  • Page 11: Checking Terminals And Components

    3-3. CHECKING TERMINALS AND COMPONENTS Rxt2 Resistor/Chip Resistor/Chip Cbat Capacitor/Chip Rbat Resistor/Chip Capacitor/Chip Capacitor/Chip Capacitor/Chip Capacitor/Chip Xtal2 Oscillator/Crystal Capacitor/Chip Resistor/Chip Capacitor/Chip Capacitor/Trimmer FET-D VDD2 FET-S VDD2 VOUT L– VDD2 VDD2 VDSP VDD2 VDSP GNDB VDD3 3. PCB ASS'Y VOUT VDD1 (7640 7379) VDD2 SCIN...

  • Page 12: Exploded View: Module Qw-2812

    4. EXPLODED VIEW: MODULE QW-2812 1 (1013 0239) 6 (1009 7687) 2 (1013 5055) 10 (1014 2487) 19 (1008 2129) 18 (1000 3815) 8 (1013 5052) 12 (7228 0364) 17 (1013 5134) 21 (1013 5136) 3 (7640 7379) PCB ass'y...

  • Page 13: Parts List: Module Qw-2812

    Parts Name Specification Applicable MODULE/WITHOUT MOVEMENT QW-2812YC-01 WVH-500D-7A < The module QW-2812 is "built-in type" which is assembled directly to the case, therefore the module as the spare parts is not available. > 1013 0239 LCD S2815-01THP QW-2812YC-01 QW-2812YC-01 1013 5055 EL...

  • Page 14: Precautions For Repair: Module Qw-2812

    6. PRECAUTIONS FOR REPAIR: MODULE QW-2812 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.

  • Page 15: 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 16: Troubleshooting: Module Qw-2812

    7. TROUBLESHOOTING: MODULE QW-2812 This is a flow chart about signal reception. START Check whether the Home City code is selected correctly. To perform MANUAL time calibration signal reception Signal reception OK? To perform AUTO time calibration signal reception Signal...
  • Page 17 Ver. 1 : Apr. 2004 Addition of pages 2, 3, 4, 5 and 6 CASIO TECHNO CO.,LTD. Overseas Service Division 6-2, Hon-machi 1-Chome Shibuya-ku, Tokyo 151-8543, Japan...

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