CASIO QW1758 (SM539) - Service Manual Immediate Download

MODULE NO.

REF. NO. S/M-539

AUGUST 1996

QW-1758

ABX-67

SERVICE MANUAL

& PARTS LIST

(WITHOUT PRICE)

-- 1 --

CONTENTS

1. SPECIFICATIONS ......................................................................................... 1

2. OPERATION CHART: MODULE QW-1758 ................................................... 2

3. DRAWINGS: MODULE QW-1758 .................................................................. 4

3-1. BLOCK DIAGRAM ............................................................................................. 4

3-2. CHECKING TERMINALS AND COMPONENTS ............................................... 5

3-3. ACCURACY SETTING SYSTEM ....................................................................... 5

4. EXPLODED VIEW: MODULE QW-1758 ........................................................ 6

5. PARTS LIST: MODULE QW-1758 ................................................................. 7

6. PRECAUTIONS FOR REPAIR: MODULE QW-1758 .................................... 8

6-1. AC (ALL CLEAR) AND REMOVING OF MODULE ........................................... 8

6-2. ACCURACY CHECKING ................................................................................... 8

6-3. REPLACEMENT OF MODULE AND DIAL WITH EL ........................................ 9

1. SPECIFICATIONS

Item

Detail

Battery

SR927W

× 2

Battery life

Approx. 2 years

Current consumption

2.00

µA maximum

Alarm system

Piezo plate on Back cover

Accuracy

±20sec./month

Accuracy setting system

Pattern cutting method (P1-P5)

Accuracy checking

See page 8

Accuracy setting

Unadjustable

Functions

· Electro-luminescent backlight

· 50 pages of Telememo

8 letters and 12 nemerals per page

Auto sort function

· Calendar

Full month calendars from January 1996 to December 2020.

· 1/100 sec. stopwatch

Measuring capacity: 23:59'59.99"

Measuring mode: Net time, split time, 1st-2nd place times

· Daily alarm

· Hourly time signals

· Regular timekeeping:

(Analog) Hour and minute hands

(Digital) Hr, min, sec, am/pm, yr, mo, date, day

· Auto-calendar (pre-programmed until the year 2020)

· 12/24-hour formats

· Auto display function

-- 2 --

Alarm Mode

Stopwatch Mode

Hand Setting Mode

Calendar Mode

Telememo Mode

Timekeeping Mode

ABOUT THE BACKLIGHT

Pressing L illuminates the display for about two seconds. If you hold down L, the light

automatically disappears after five seconds.

TELEMEMO MODE

The backlight of this watch employs an electro-

luminescent (EL) light, which loses its illuminating

power after very long term use.

The watch emits an audible sound whenever the

display is illuminated. This is caused because the

EL light vibrates slightly when lit. It does not indi-

cate malfunction of the watch.

Frequent use of the backlight shortens the battery

life.

TIMEKEEPING MODE

Press D to change the display format in the Timekeeping Mode as shown below.

Format 2

Hour

Seconds

Minutes

Month

Date

Format 1

Month

Date

Day of the week

Format 3

Format 1 shows the day of the week, month, and day.

Format 2 shows a full-month calendar for the current month, with the current date

flashing inside it.

Format 3 clears the entire display.

Holding down B while using either Format 1 or Format 3 displays the full-month

calendar for the current month.

Holding down B while using Format 2 displays the full-month calendar for the follow-

ing month.

To set the time and date

1. Make sure that your watch is in the Timekeeping Mode. If not, use C to enter the

Timekeeping Mode.

2. Hold down A while in the Timekeeping Mode. The seconds digits flash on the

display because they are selected.

3. Press C to change the selection in the following sequence.

4. While the seconds digits are selected (flashing), press D to reset the seconds to

"00". If you press D while the seconds count is in the range of 30 to 59, the seconds

are reset to "00" and 1 is added to the minutes. If the seconds count is in the range

of 00 to 29, the minutes count is unchanged.

5. While any other digits (besides seconds) are selected (flashing), press D to increase

the number or B to decrease it. Holding down either button changes the current

number at high speed.

While the 12/24-hour setting is selected, press D to switch between the two formats.

6. After you set the time and date, press A to return to the normal Timekeeping Mode

(the flashing stops).

The day of the week is automatically set in accordance with the date.

The date can be set within the range of January 1, 1996 to December 31, 2020.

If you do not operate any button for a few minutes while a selection is flashing, the

flashing stops and the watch goes back to the normal Timekeeping Mode automati-

cally.

Day of the week abbreviations

Day of the week is displayed as follows.

SUN : Sunday

MON : Monday

TUE : Tuesday

WED : Wednesday

THU : Thursday

FRI : Friday

SAT : Saturday

Seconds

Hour

Minutes

Date

Year

Month

12/24-hour

format

Caution

The following causes all data stored in memory to be deleted. Be sure to always

keep separate written copies of all important data.

· Malfunction or repairs

· Dead battery

· Battery replacement

In no event will CASIO be liable for loss of data or any damages arising out of

such loss.

The Telememo Mode lets you store up to 50 pairs of name and telephone number data.

The name can be up to 8 characters long and the numbers 12 digits each. Data is

automatically sorted into alphabetical order based on the name data. You can recall

data by scrolling through a sorted list.

To input Telememo data

Name display

Name area

Telephone number

Number of items in memory

Number area

Figure a.

Figure b.

Figure c.

Mode indicator

Use B and D

1. Make sure that your watch is in the Telememo Mode. If not, use C to enter the

Telememo Mode.

Whenever you enter the Telememo Mode, the display shows how many items are

already stored in memory and how many items you can input before memory be-

comes full (Figure a.). After a few seconds, the display changes to show the item

that was selected when you last exited the Telememo Mode (Figure b.).

2. Press B and D in the Telememo Mode. The new data display (Figure c.) appears.

If the message "FULL" appears on the display, it means that memory is full. To

store more data, you first have to delete some of the data. Use the procedure to

delete data.

3. Hold down A until the flashing cursor appears on the name area.

4. Use B or D to input letters at the cursor position. The character changes in the

following sequence. Holding down either button changes the selection at high speed.

A to Z

0 to 9

(Space)

Press B

Press D

5. After you select the character you want, press C to advance the cursor to the right.

Repeat steps 4 and 5 until you complete name input.

You can input up to 8 characters in the name area. The display shows only 4

characters, but automatically scrolls from right to left to show all of the characters

that make up the text.

6. After the name input is through, use C to move the cursor to the number area

(Figure c.).

7. While the cursor is in the number area, use B or D to input numbers you want. The

character changes in the following sequence. Holding down either button changes

the selection at high speed.

(Hyphen)

0 to 9

(Space)

Press B

Press D

8. After you select the character you want, press C to advance the cursor to the right.

Repeat steps 7 and 8 until you complete number input.

9. After inputting the data you want, press A to store it into memory.

The message "SORT" appears on the display and stays there while data is being

stored into aphabetical order. At this time the cursor appears on the display ready

for input. At this point you could return to step 4 to input more data. If you do not

want to input more data, press A again to return to the normal Telememo Mode

display (without flashing).

The following shows how the display automatically changes if you do not operate

any button for a few minutes while in the Telememo Mode.

Data input display

(Flashing)

Normal Telememo Mode

(No flashing)

Timekeeping Mode

To scroll through Telememo data

In the normal Telememo Mode (when the display is not flashing), press D to scroll

forward or B to scroll backward through stored data.

The data item that is displayed when you exit the Telememo Mode will be the first

data to appear when you enter the Telememo Mode again.

2. OPERATION CHART: MODULE QW-1758

GENERAL GUIDE

Press C to change from mode to mode.

If the digital display of your watch is continually changing, see "Auto Display function" for information on how to stop it.

-- 3 --

To record split times

1. Press D to start the stopwatch.

2. Press B to display the timing up to that point. Stopwatch timing continues internally.

At this time, the mode indicator "STW" is replaced by "SPL" on the display, indicating

that the split time is being recorded.

3. Press B to clear the split time and to continue time measurement on the display.

You can repeat steps 2 and 3 as many times as you want.

4. Press D to stop the time measurement.

5. Press B to clear the stopwatch to all zeros.

To time first and second place finishes

1. Press D to start the stopwatch.

2. Press B when the first finisher crosses the line, and record the time.

3. Press D when the second finisher crosses the line.

4. Press B to display the finishing time of the second finisher.

5. Press B again to clear the stopwatch to all zeros.

HAND SETTING MODE

Seconds

Hours

1/100

second

Minutes

Mode indicator

1. Make sure that your watch is in the Calendar Mode.

If not, use C to enter the Calendar Mode.

The calendar of the current month appears on the

display, with the current date flashing, whenever

you enter the Calendar Mode.

2. Pressing D scrolls forward to the next month's cal-

endar, and pressing B scrolls back to the previous

month.

Holding down either button scrolls the calendars at

high speed. After two years scroll, the watch starts

to scroll year-by-year on the January calendar (for-

ward scroll) or the December calendar (back scroll).

The Stopwatch Mode lets you measure elapsed time,

split times, and two finishes. The range of the stop-

watch is 23 hours, 59 minutes, 59.99 seconds.

To measure elapsed time

1. In the Stopwatch Mode, press D to start the stop-

watch.

2. Press D to stop the stopwatch.

You can resume the measurement operation by

pressing D again.

3. Press B to clear the stopwatch to all zeros.

STOPWATCH MODE

To edit Telememo data

1. In the Telememo Mode, use B or D to scroll through the data items and display the

one you want to edit.

2. Hold down A until the flashing cursor appears on the display.

3. Use C to move the cursor to the character you want to change.

4. Use B or D to select the character you want.

For details, see "To input Telememo data" (steps 4 through 5 for name input, or 7

through 8 for number).

5. After editing the data, press A to store it.

The message "SORT" appears on the display and stays there while data is being

stored into alphabetical order. After the sort operation is complete, the display

returns to the normal Telememo Mode display (the flashing stops).

To delete a Telememo item

1. In the Telememo Mode, use B or D to scroll through the name data and display the

one you want to delete.

2. Hold down A until the cursor appears on the display.

3. Hold down B and D until the message "CLR" appears on the display indicating the

data is deleted. At this time the cursor appears on the display ready for input.

Press A again to return to the normal Telememo Mode (without a cursor).

If you want to input more data, start from step 3 under "To input Telememo data".

CALENDAR MODE

The Calendar Mode lets you view full month calendars for any month from January

1996 to December 2020. The short bar in the upper left of the calendar indicates that

the first day of the week in the calendar is Sunday.

When the time shown on the display does not match

the analog setting, use this mode to correct this situa-

tion by changing the analog setting.

To set the analog time

1. Make sure that your watch is in the Hand Setting

Mode. If not, use C to enter the Hand Setting Mode.

2. Hold down A while in the Hand Setting Mode until

the mode indicator starts to flash on the display.

3. Press D to advance the hands of the analog time-

piece.

4. After you set the analog time, press A to return to

the normal Hand Setting Mode (the flashing stops).

Minute

hand

Mode

indicator

Hour

hand

Current time

Current

date

The following shows how the display automatically changes if you do not operate

any button for a few minutes while in the Hand Setting Mode.

Hand time setting

(Flashing)

Normal Hand Setting Mode

(No flashing)

Timekeeping Mode

AUTO DISPLAY FUNCTION

The Auto Display function of this watch continually changes the contents of the digital

display. Note that you cannot use any of the watch's other functions while the Auto

Display function is operating.

To turn the Auto Display on

Hold down C for about two or three seconds in any

mode until the watch beeps.

To turn the Auto Display off

Hold down C for about two or three seconds until the

watch beeps. At this time, the watch is in the Time-

keeping Mode.

Note

The Auto Display function cannot be performed while you are making settings (i.e.

while digits or other settings are flashing on the display).

Calendar

Year

Month

Minutes

Hour

Hourly Time

Signal on indicator

ALARM MODE

When the Daily Alarm is switched on, the alarm sounds for 20 seconds at the preset

time each day.

When the Hourly Time Signal is switched on, the watch beeps every hour on the hour.

Note that the Daily Alarm and the Hourly Time Signal operate based on the digital time

setting.

To set the alarm time

1. Make sure that the watch is in the Alarm Mode. If

not, use C to enter the Alarm Mode.

2 Hold down A while in the Alarm Mode until the

hour digits start to flash on the display. The hour

digits flash because they are selected. At this time

the Daily Alarm is switched on automatically.

3. Press C to change the selection in the following

sequence.

Mode

indicator

Hour

Minutes

Alarm time setting

(Flashing)

Normal Alarm Mode

(No flashing)

Timekeeping Mode

Both on

Both off

Daily Alarm

only

Hourly Time

Signal only

4. Press D to increase the selected digits and B to decrease them. Holding down

either button changes the number at high speed.

The format (12-hour and 24-hour) of the alarm time matches the format you select

for normal timekeeping.

When setting the alarm time using the 12-hour format, take care to set the time

correctly as morning or afternoon (indicated as "P" on the display).

5. After you set the alarm time, press A to return to the normal Alarm Mode (the

flashing stops).

The following shows how the display automatically changes if you do not operate

any button for a few minutes while in the Alarm Mode.

To switch the Daily Alarm and Hourly Time Signal on and off

Press D while in the normal Alarm Mode (when no digit is flashing) to change the

status of the Daily Alarm and Hourly Time Signal in the following sequence.

To stop the alarm

Press any button to stop the alarm after it starts to sound.

To test the alarm

Hold down D while in the normal Alarm Mode to sound the alarm.

Alarm on

indicator

-- 4 --

LC1

L10

L11

L12

L13

L14

L15

L16

L17

L18

L19

L20

L21

L22

L23

L24

L25

L26

L27

LC2

LC5

L53

L52

L51

L50

L49

L48

L47

L46

L45

L44

L43

L42

L41

L40

L39

L38

L37

L36

L35

L34

L33

L32

L31

L30

L29

L28

LC4

LC3

46C2

47C2

45C2

45C1

47C1

46C1

46C5

43C2

44C2

44C1

42C2

42C1

44C5

43C1

43C5

39C2

40C2

39C1

39C5

41C1

40C1

40C5

37C2

34C2

20C5

19C5

18C5

17C1

16C1

15C1

14C1

20C4

19C4

18C4

17C3

16C3

15C3

14C3

6C4

7C4

8C4

9C4

10C4

11C4

20C2

19C2

18C2

17C4

16C4

15C4

14C4

6C2

7C2

8C2

9C2

10C2

11C2

20C1

19C1

18C1

17C2

16C2

15C2

14C2

6C1

7C1

8C1

9C1

10C1

11C1

15C5

8C5

9C5

12C5

12C1

48C2

48C1

41C2

31C4

34C4

13C5

13C1

13C2

13C4

13C3

10C5

11C5

17C5

16C5

20C3

19C3

18C3

6C3

7C3

6C5

1 2 345

53 52 51 50 49

21 22 23 24 25 26 27 28 29 30

7C5

8C3

9C3

10C3

11C3

34C1

35C5

38C2

36C2

33C2

35C2

35C1

34C5

31C2

44C5

47C1

47C4

32C1

32C5

31C3

47C5

48C3

48C4

46C4

45C5

45C1

44C4

43C3

46C3

45C4

44C3

41C5

42C1

42C4

41C3

42C3

45C4

41C4

38C5

39C1

39C4

38C3

40C3

40C4

38C4

36C5

36C1

36C4

35C3

37C3

37C4

35C4

31C3

30C1

33C4

32C3

35C5

34C3

32C4

32C2

33C1

31C5

36C1

38C1

37C1

37C5

3. DRAWINGS: MODULE QW-1758

3-1. BLOCK DIAGRAM

KI4

KI6

KI5

KI2

KI1

KI3

KI7

KI8

XTB

LD1

VDD

VSS2

VSSM

VCH

VSS3 VSS1

VC1

VC2

TOTAL

91PINS

BONDING 88PINS

LSI

LCD

BAT1

BAT2

An. B

Tr2

Tns1

Tr1

Tr3

Xtal

L53

LC1

LC5