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Casio QW-2812, Service Manual & Parts Manual

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Casio QW-2812 Service Manual & Parts Manual Download Page 12

— 10 —

4. EXPLODED VIEW: MODULE QW-2812

1 (1013 0239)

3 (7640 7379)
PCB ass'y

10 (1014 2487)

19 (1008 2129)

9 (1013 5138)

13 (7207 8349)

14 (7207 8470)

16 (1013 5139)

20 (1013 5135)

17 (1013 5134)

12 (7228 0364)

15 (1013 4221)

11 (1014 0782)

14 (7207 8470)

14 (7207 8470)

5 (1006 5657)

Battery Storage (CTL1616)

2 (1013 5055)

21 (1013 5136)

8 (1013 5052)

18 (1000 3815)

7 (1008 2184)

6 (1009 7687)

Summary of Contents for QW-2812

Page 1: ...SERVICE MANUAL PARTS LIST WITHOUT PRICE QW 2812 MODULE NO R REF NO S M 848 FEB 2004 WVH 500D Ver 1 Apr 2004 ...

Page 2: ...GRAM 7 3 2 CIRCUIT DIAGRAM 8 3 3 CHECKING TERMINALS AND COMPONENTS 9 4 EXPLODED VIEW MODULE QW 2812 10 5 PARTS LIST MODULE QW 2812 11 6 PRECAUTIONS FOR REPAIR MODULE QW 2812 6 1 AC ALL CLEAR AND REMOVING OF MODULE 12 6 2 ACCURACY CHECKING 12 6 3 SOLAR CELL PCB ASS Y CONTACT CHECKING 13 7 TROUBLESHOOTING MODULE QW 2812 14 ...

Page 3: ...te time received display Time Calibration Signal Receivable Time Calibration Signals Mainflingen Germany Call Sign DCF77 Frequency 77 5kHz e DATE MEMORY Meomory capacity Up to 40 records for Internet access codes and other data when there are 7characters per record actual number of records depends on the number of characters per record World Time 29 time zones 30 cities daylight saving time on off...

Page 4: ... watch in an area that is outside of the range of the transmitter in Mainflingen you need to manually adjust the time as required See Timekeeping for information about manual settings To set your Home City 1 In the Timekeeping Mode hold down A until the city code starts to flash which indicates the setting screen 2 Use D east and B west to select the city code you want to use as your Home City The...

Page 5: ... ERR appears on the display for about one or two minutes After that the watch returns to the Timekeeping Mode You can also change from the last signal or ERR screen to the normal timekeeping screen by pressing D To turn auto receive on and off 1 In the Timekeeping Mode hold down A until the city code starts to flash which indicates the setting screen 2 Press C twice to move the flashing to the aut...

Page 6: ...e CLR appears to indicate that the record is being deleted After the record is deleted the cursor appears on the display ready for input 4 Input data or press A to return to the remaining memory screen Stopwatch The stopwatch lets you measure elapsed time split times and two finishes The display range of the stopwatch is 99 minutes 59 99 seconds The stopwatch continues to run restarting from zero ...

Page 7: ...this World Time Mode times will not be correct if you do not select the proper Home City code before setting the time and date in the Timekeeping Mode To set the current time and date manually 1 In the Timekeeping Mode hold down A until the city code starts to flash which indicates the setting screen 2 Use A or C to move the flashing in the sequence shown below to select other settings City code S...

Page 8: ... s built in full automatic calendar makes allowances for different month lengths and leap years Once you set the date there should be no reason to change it except after you have the watch s battery replaced or when battery power drops to Level 4 The current time for all city codes in the Timekeeping Mode and World Time Mode is calculated in accordance with the Greenwich Mean Time GMT differential...

Page 9: ...Y0 X5Y0 X6Y0 X7Y0 X8Y0 X14Y1 X13Y1 X12Y1 X11Y1 X10Y1 X9Y1 X0Y1 X1Y1 X2Y1 X3Y1 X4Y1 X5Y1 X6Y1 X7Y1 X8Y1 X14Y2 X13Y2 X12Y2 X11Y2 X10Y2 X9Y2 X0Y2 X1Y2 X2Y2 X3Y2 X4Y2 X5Y2 X6Y2 X7Y2 X8Y2 X14Y3 X13Y3 X12Y3 X11Y3 X10Y3 X9Y3 X0Y3 X1Y3 X2Y3 X3Y3 X4Y3 X5Y3 X6Y3 X7Y3 X8Y3 X14Y4 X13Y4 X12Y4 X11Y4 X10Y4 X9Y4 X0Y4 X1Y4 X2Y4 X3Y4 X4Y4 X5Y4 X6Y4 X7Y4 X8Y4 LC2 LC1 L38 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 ...

Page 10: ...sed in this module LSI TOTAL 106PINS BONDING 81PINS GND VDD2 BAT VCH VDD3 VC1 VC2 C3 C2 C5 XTB Xtal L3 L38 LC1 LC5 LCD 2 8V 1 3b 1 5d LD1 S1 VDD1 C1 BD C8 LL1 Tr1 XT T1 T2 T3 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI8 KI9 S2 SCR SCIN RP1 RP2 Cp PZ VDSP C4 VC3 VC4 Di1 VHF C6 AC T4 KC4 KC3 KC2 KC1 R1 R2 VSC C7 SC C9 R3 Z VPM Di2 R1 Rb GNDB S3 S4 SDO SCK CSB SDI N1 N2 Cxt Rxt2 Ccp Cbat Rbat Xtal2 ISB ANT Rcp Rx...

Page 11: ... CLF1 KI3 KI3 VOUT R2 LD1 VSC R3 KI9 KI2 KI3 VDSP SD0 VC1 P14 VCH R1 GND P2 P1 VDD2 KI1 KI4 FET S AC KC1 Transistor Tr1 Inverter INV Resistor Chip RP1 Resistor Chip RP2 Coil LL2 Coil LL1 Capacitor Chip Cel Xtal1 4 Oscillator Crystal 7110 6336 Xtal2 Oscillator Crystal Resistor Chip Rxt2 Varistor Z Resistor Chip R1 Capacitor Chip C8 Capacitor Chip C9 Capacitor Chip C1 Capacitor Chip C2 Capacitor Chi...

Page 12: ...1014 2487 19 1008 2129 9 1013 5138 13 7207 8349 14 7207 8470 16 1013 5139 20 1013 5135 17 1013 5134 12 7228 0364 15 1013 4221 11 1014 0782 14 7207 8470 14 7207 8470 5 1006 5657 Battery Storage CTL1616 2 1013 5055 21 1013 5136 8 1013 5052 18 1000 3815 7 1008 2184 6 1009 7687 ...

Page 13: ...LATOR CRYSTAL CFS 145LM07 QW 2812YC 01 1 B 5 1006 5657 BATTERY STORAGE CTL1616 QW 2812YC 01 1 B 6 1009 7687 CUSHION 2549 Q470646 1 QW 2812YC 01 1 C 7 1008 2184 CUSHION 2709 2 Q469841 1 QW 2812YC 01 1 C 8 1013 5052 CUSHION 2815 RJQ515128 001V01 QW 2812YC 01 1 C 9 1013 5138 HOLDER RJQ514979 001V01 QW 2812YC 01 1 C 10 1014 2487 INTERCONNECTOR RJQ517008 001V01 QW 2812YC 01 1 C 11 1014 0782 LABEL RJQ51...

Page 14: ... switching the module to ACCURACY CHECKING MODE The operations are shown below A SWITCHING TO ACCURACY CHECKING MODE While pressing the D button press A and C buttons 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 CHEC...

Page 15: ...e the watch on the desk 2 Check the display indicates as figure 2 3 Display side down and place the watch on the desk more than two seconds Or go to a dark room and place the watch more than two seconds 4 Check the display indicates as figure 3 If 88 is not appeared on the display disassemble again the module and check the contact spring between the Solar cell and PCB 3 To exit from TEST mode Pres...

Page 16: ...Home City code is selected correctly To perform MANUAL time calibration signal reception OK There is a possibility of location bad To 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 ...

Page 17: ...CASIO TECHNO CO LTD Overseas Service Division 6 2 Hon machi 1 Chome Shibuya ku Tokyo 151 8543 Japan Ver 1 Apr 2004 Addition of pages 2 3 4 5 and 6 ...

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