SERVICE MANUAL

& PARTS LIST

REF. NO. S/M-573
OCTOBER 1997

MODULE NO.
QW-1637

A210 WE

Ver. 1 NOV. / 2002

INDEX R (WITHOUT PRICE)

 CONTENTS
1. SPECIFICATIONS • • • • • • • • • • • • • • • • • • • • • • • • • • • 1
2. OPERATION CHART • • • • • • • • • • • • • • • • • • • • • • • • • 2
3. DRAWINGS
3-1. BLOCK DIAGRAM • • • • • • • • • • • • • • • • • • • • • • • • • 4
3-2. CHECKING TERMINALS AND COMPONENTS • • • • 5
3-3. N1~N4 PADS • • • • • • • • • • • • • • • • • • • • • • • • • • • • 5
3-4. ACCURACY SETTING SYSTEM • • • • • • • • • • • • • • • 5
4. EXPLODED VIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • 6
5. PARTS LIST • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 7
6. PRECAUTIONS FOR REPAIR
6-1. AC (ALL CLEAR) • • • • • • • • • • • • • • • • • • • • • • • • • • 8
6-2. ACCURACY CHECKING • • • • • • • • • • • • • • • • • • • • 8
6-3. LINK REMOVAL OF EXPANSION BAND • • • • • • • • • 9
1. SPECIFICATIONS : QW-1637
Item Detail Item Detail
Battery CR1616 Accuracy ±30sec./month
Battery life Approx. 24 months Accuracy setting system Selected Capacitor/Chip CG1

Current consumption 1.56 µA maximum Accuracy checking See page 8

Alarm system Piezo plate on Back cover Accuracy setting Unadjustable

Function
• Electro-luminescent backlight
• 30 pages of telememo
8 letters and 12 numerals per page
Other: Auto sort function, remaining memory display
• 1/100 sec. stopwatch
Measuring capacity: 23;59'59.99"
Measuring mode: Elapsed time, split time, 1st-2nd place times
• Countdown alarm
Input range: 1 min. to 24 hrs.
Unit: 1 sec.
Other: Auto-repeat function
• 5 multi-function alarms (with reminder text display)
• Hourly time signal
• Dual time
• Regular time keeping: Hr, min, sec, am/pm, year, month, date, day
• Auto-calendar (pre-programmed until the year 2039)
• 12/24-hour formats

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2. OPERATION CHART : QW-1637
GENERAL GUIDE
• Press M to change from mode to mode. After you perform an operation in any mode, • In any mode press L to illuminate the display for about two seconds.
pressing M returns to the Timekeeping Mode. • Some watch models have a standard black-on-white display, while others have a white-on-
black display. All displays in this manual are shown as black-on-white.
Timekeeping Mode Telememo Mode Alarm Mode Dual Time Mode Countdown Alarm Mode Stopwatch Mode

(Mode) (Light)

TIMEKEEPING MODE To edit Telememo data items

1. In the Telememo Mode, scroll through the data items and display the one you want to edit.
Month-Date • In the Timekeeping Mode, press B to switch 2. Press A and a cursor appears in the text area.
Day of week between the 12-hour and 24-hour formats.
Year 3. Use M to move the cursor to the character you want to change.
4. Change the character.
To set the time and date • See “How to input characters” for details.
1. Press A while in the Timekeeping Mode. 5. After making the changes that you want, press A to store it and return to the Telememo
The seconds digits flash on the display because they Mode.
are selected.
2. Press M to change the selection in the following
To delete Telememo data
sequence.
1. In the Telememo Mode, scroll through the data items and display the one you want to delete.
2. Press A and a cursor appears in the text area.
Seconds Hour Minutes
3. Press B and C at the same time to delete the data item.
Hour Minutes • At this time the cursor appears in the text area, ready for input.
PM indicator Seconds Date Month Year
4. Input data or press A to return to the Telememo Mode.
3. While the seconds digits are selected (flashing), press C to reset the seconds to 00 . If you
press C while the seconds count is in the range of 30 to 59, the seconds are reset to 00 and ALARM MODE
1 is added to the minutes. If the seconds count is in the range of 00 to 29, the minutes count
Mode You can set five independent alarms with the hour,
is unchanged. indicator minutes, month and date. You can even input text that
4. While any other digits (besides seconds) are selected (flashing), press C to increase the Month-Date appears on the display to remind you of the purpose of
number or B to decrease it.
each alarm. Use the Alarm Mode to turn the alarm and the
• Holding down either button changes the current selection at high speed. Text area
Hourly Time Signal on and off.
• When the 12-hour format is selected, the indicator P appears on the display to indicate “p.m.”
• When an alarm is turned on, an alarm tone sounds for
times. There is no indicator for “a.m.” times. Selecting the 24-hour format causes the
20 seconds when the preset time is reached.
indicator 24 to appear on the display.
• When the Hourly Time Signal is turned on, the watch
5. After you set the time and date, press A to return to the Timekeeping Mode.
• The day of the week is automatically set in accordance with the date. beeps every hour on the hour.
• The date can be set within the range of January 1, 1995 to December 31, 2039.
• 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 Timekeeping Mode automatically.
Hour Minutes Alarm No.
ABOUT THE BACKLIGHT Alarm on indicator
In any mode, press L to illuminate the display for about two seconds. Alarm Types
• The backlight of the watch employs an electro-luminescent (EL) light, which loses illuminating The types of alarm you get depends on the information you set.
power after very long use. • To set a Daily alarm
• The illumination provided by the backlight may be hard to see when viewed under direct Set the hour and minutes for the alarm time. Set xx for the month and date (see step 4 under
sunlight. “To set alarms”). This type of setting causes the alarm to sound every day at the time you set.
• The watch will emit an audible sound whenever the display is illuminated. This is caused by a • To set a Date alarm
transistor that vibrates when the EL panel lights up. It does not indicate malfunction of the Set the month, date, hour and minutes for the alarm time. This type of setting causes the alarm
watch. to sound at the specific time, on the specific date you set.
• The backlight automatically stops illuminating whenever an alarm sounds. • To set a 1-Month alarm
Set the month, hour and minutes for the alarm time. Set xx for the date (see step 4 under “To
set alarms”). This type of setting causes the alarm to sound every day at the time you set, only
TELEMEMO MODE during the month you set.
Mode The Telememo Mode lets you store up to 30 pairs of name • To set a Monthly alarm
indicator and telephone number data. Data is automatically sorted Set the date, hour and minutes for the alarm time. Set xx for the month (see step 4 under “To
Remaining based on the characters of the name. You can recall data set alarms”). This type of setting causes the alarm to sound every month at the time you set, on
memory by scrolling through it on the display. the date you set.
• See the “CHARACTER LIST” at the back of this manual
for details on how the watch sorts data. To set alarms
• The data item on the display when you exit the 1. Press C while in the Alarm Mode to select Alarm 1 through Alarm 5.
Telememo Mode appears first the next time you enter
the Telememo Mode. Alarm 1 Alarm 2 Alarm 3 Alarm 4

Hourly Time Signal Alarm 5

Name Telephone number 2. After you select an alarm, press A . The hour digits flash on the display because they are
selected.
To input new Telememo data • At this time, the alarm is automatically switched on.
Text area 1. In the Telememo Mode, press B or C until the new 3. Press M to change the selection in the following sequence.
Cursor data display appears.
• The new data display is the one that is blank (contains Hour Minutes Month Date Text*
no name and telephone number).
• If there is no Telememo data stored in memory yet, the * There are eight spaces in the text, so you have to press M eight times to move to the Hour
new data display appears as soon as you enter the setting.
Telememo Mode. 4. Press C to increase the selected digits and B to decrease them. Holding down either button
2. Press A and a cursor appears in the text area. changes the selection at high speed.
3. Input a name in the text area and a telephone number • To set an alarm that does not include a month (daily alarm, monthly alarm), set xx for the
in the number area. month. Press C or B until the xx mark appears (between 12 and 1) while the month digits
are flashing.
Number area Use B and C to input characters, and M to move the • To set an alarm that does not include date (daily alarm, 1-month alarm), set xx for the date.
[New Data Display] cursor around the display. Press C or B until the xx mark appears (between 31 and 1) while the date digits are
For details, see “How to input characters”. flashing.
• The format (12-hour and 24-hour) of the alarm time matches the format you select for normal
• You can input up to eight characters in the text area, and 12 digits in the number area.
• Make sure that you distinguish between the letter O and the number 0 (zero). Inputting a timekeeping.
zero for the letter O will affect automatic sorting. • When setting the alarm time using the 12-hour format, take care to set the time correctly as
4. After inputting your data, press A to store it and return to the Telememo Mode. morning (no indicator) or afternoon P.
• When you press A to store data, the message SORT appears on the display for a few 5. If you want to input reminder text, first use M to move the cursor to the text area of the
seconds. After the sort operation is complete, the normal Telememo Mode display (without display and then input text.
the cursor) appears.
• The text area of the display can show only six characters at a time, so longer text scrolls
continuously from right to left. Use B and C to input characters, and M to move the cursor around the display. For details,
• If the message FULL appears in the text area of the display, it means that memory is see “How to input characters”.
full. To store more data, you will first have to delete some of the data stored in memory.
• You can input up to eight characters in the text area.
To recall Telememo data • Anytime while the cursor is on the display, you can press B and C at the same time to clear
In the Telememo Mode, press C to scroll forward through stored data items or B to scroll in
reverse. it.
• Holding down either button scrolls through the data at high speed.

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6. After you finish inputting data, press A to return to the Alarm Mode. STOPWATCH MODE
• If you input reminder text, the text appears on the display when the alarm time is reached.
• Note that reminder text appears only if the watch is in the Timekeeping Mode when the alarm Current time 1/100 second The Stopwatch Mode lets you measure elapsed time, split
time is reached. Otherwise, only the alarm tone sounds (without the reminder text). Mode indicator times, and two finishes. The range of the stopwatch is 23
hours, 59 minutes, 59.99 seconds.
To stop an alarm once it starts to sound
Press any button to stop an alarm when it starts to sounds. The reminder text for the alarm (if
any) will remain in the text area of the display for about 20 seconds.

To switch an Alarm and Hourly Time Signal on and off

1. In the Alarm Mode, press C to select an alarm or the Hourly Time Signal.
2. When the alarm or Hourly Time Signal you want to is selected, press B to switch it on and
off.
x Indicates alarm is ON
y Indicates Hourly Time Signal is ON Hours Minutes
• If any alarm is on, the Alarm On Indicator is shown on the display when you change to Seconds
another mode. (a) Elapsed time measurement
C C C C B
To test the alarm Start Stop Re-start Stop Clear
Hold down C while in the Alarm Mode to sound the alarm.
(b) Split time measurement
DUAL TIME MODE C B B C B
Start Split Split release Stop Clear
Mode indicator Month-Date The Dual Time function of this watch lets you keep track of
time in a different time zone.
(c) Split time and 1st-2nd place times
• In the Dual Time Mode, the seconds count is
synchronized with the seconds count of the C B C B B
Start Split Stop Split release Clear
Timekeeping Mode.
First runner Second runner Record time
• In the Dual Time Mode, press B to switch between the
finishes. finishes. of second
12-hour and 24-hour formats.
Record time of runner.
first runner.
To set the Dual Time
1. Press A while in the Dual Time Mode. The hour digits
flash on the display because they are selected. INPUTTING TEXT
Hour Minutes 2. Press M to change the selection in the following The following describes how to input text in the Telememo Mode and Alarm Mode. It also
Seconds
sequence. provides details of how text is produced in the text area of the display.
Hour Minutes Month Date How to input characters
Cursor Text area 1. When the cursor is blinking in the text area, use C and
B to scroll through the available letters, numbers and
3. Press C to increase the selected digits and B to decrease them. Holding down either
symbols, in the following sequence.
button changes the selection at high speed.
4. After you set the time, press A to return to the Dual Time Mode. C B
(space) A to Z 0 to 9
COUNTDOWN ALARM MODE
The countdown timer can be set within a range of 1 . -
Mode indicator Current time
minute to 24 hours. When the countdown reaches zero,
an alarm sounds for 10 seconds or until you press any • Holding down either button scrolls through at high
button. Number area
speed.
Note that you can also select auto repeat timing that
automatically restarts the countdown from the original 2. When the character you want at the cursor position is shown, press M to move the cursor to
value you set whenever zero is reached. the right.
3. Repeat steps 1 and 2 until your text is complete.
To set the countdown start time • The text area in the Telememo Mode can hold up to eight characters. When the cursor is
1. Press A while in the Countdown Alarm Mode. The located at the eighth space of the text area in this mode, moving the cursor to the right
hours digit flashes on the display because it is causes it to jump down to the first digit in the number area. When the cursor is at the 12th
selected. digit of the number area, moving it to the right causes it to jump back up to the first character
Hours Minutes of the text area.
Seconds 2. Press M to change the selection in the following
sequence. • You can input only numbers and spaces in the number area. Each press of C or B changes
the input at the current cursor location in the following sequence:
Hours Minutes
Press C
3. Press C to increase the selected number. Holding down C changes the selection at high x 0 to 9 (space)
speed. Press B
• To set the starting value of the countdown time to 24 hours, set 0:00 .
4. After you set the countdown start time, press A to return to the Countdown Alarm Mode. • If you do not perform any button operation for about two or three minutes while the cursor is
on the display, the watch automatically returns to the normal data display (the cursor
To use the countdown timer disappears).
1. Press C while in the Countdown Alarm Mode to start the countdown timer.
2. Press C again to stop the countdown timer. How the text display scrolls
• You can continue countdown timer operation by pressing C . The text area of the display can show only six characters at the time, so longer text scrolls
3. Stop the timer and then press B to reset the countdown time to its starting value. continuously from right to left.
• When the end of the countdown is reached and auto repeat timing is off, the alarm sounds for Continuously scrolls
10 seconds or until you stop the alarm by pressing any button. Countdown timing stops, and
the countdown time is automatically reset to its starting value after the alarm stops. MEETING<MEE
Separator (inserted automatically)
To switch auto repeat timing on and off Text area
1. Press A while in the Countdown Alarm Mode. The Last letter of text
Auto repeat on indicator
hours digit flashes on the display because it is selected.
2. Press B to switch auto repeat on and off.
3. Press A to return to the Countdown Alarm Mode.
CHARACTER LIST
• When the end of the countdown is reached while auto
1 (space) 11 J 21 T 31 3
repeat is on, the alarm sounds, but the countdown
restarts from the beginning without stopping. You can 2 A 12 K 22 U 32 4
stop the countdown by pressing C and manually reset
to the start time by pressing B . 3 B 13 L 23 V 33 5

4 C 14 M 24 W 34 6

5 D 15 N 25 X 35 7

6 E 16 O 26 Y 36 8

7 F 17 P 27 Z 37 9

8 G 18 Q 28 0 38 -

9 H 19 R 29 1 39 .

10 I 20 S 30 2

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3. DRAWINGS : QW-1637
3-1. BLOCK DIAGRAM

LC1

LC2

LC3

LC4

LC5
L16

L17

L18

L19

L20

L21

L22

L23

L24

L25
L10

L11

L12

L13

L14

L15
L1

L2

L3

L4

L5

L6

L7

L8

L9
C1

C2
31C4
C3

C4
31C5
C5
1 25 30 26

46C5
52C5 51C5 47C5 45C5 44C5 39C5 36C5 35C5 32C5
52C4

51C4

50C5

48C5

46C4

45C4

44C4

42C5

41C5

39C4

38C5

37C5

36C4

34C5

33C5

31C3
52C3 49C5 45C3 43C5 40C5 38C4 35C4 32C3

46C3

43C4

41C4

39C3

36C3

33C4
52C2

50C4

44C3

42C4

40C4

37C4

34C4

32C2
51C3

48C4

52C1 47C4
51C2 49C4 45C2 42C3 41C3 38C3 35C3 33C3

51C1
50C3 48C3 43C3 40C3

45C1
37C3 34C3
50C2

49C3

48C2

47C3

44C2

42C2

41C2

39C2

38C2

36C2

35C2

33C2
49C2 47C2 43C2 40C2
37C2 34C2
50C1

47C1

44C1

41C1
48C1

46C2

42C1

39C1

38C1

35C1
36C1

33C1
49C1 48C1 43C1 40C1 37C1 34C1
L37

L36

L35

L34

L33

L32

L31

L30

L29

L28

L27

L26
L52

L51

L50

L49

L48

L47

L46

L45

L44

L43

L42

L41

L40

L39

L38

LC1~LC5 L1~L52
BD2 1 1 KC1
1 KC2
T1
1 KC3
AC 1 KC4
VDD
Xtal KI6
2 CG2 XTB KI7
LSI
KI8
CG1 XT TOTAL 87PINS
BONDING 82PINS
N1 KI1 S1
N2 KI2 S3
N3 KI3 S4
N4 KI4 S2
VSS2

VSS1

VSS3

KI5 SL
VCH

VCC

BD1
VC

LD

Tr
C5 C4 C2 C3 C1
+ BAT V 2
L
PZ

BACK
1. Not bonding.
FRONT EL 2. Not used no QW-1637
PF SF

R Tns
PE SE

TB
Tr2
C6
TE

Tr3

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3-2. CHECKING TERMINALS AND COMPONENTS : QW-1637

11 .Transistor Tr2 C6 6 .Capacitor / Chip 26 .Tape / Adhesive 1416

(7101 5630) (7103 4446) (7229 0623)
9 .Resistor / Chip R Oscillator / Quartz Xtal Tns 10 .Transformer 14 .Cushion 1588
(7102 7646) (Unrepairable) (7101 5854) (7233 2030)

PF(VDD) TB TB(SF)
TE TB(SF)
SE
KI3 SE

TB PF(VDD)
(SF) KI4
PE PE
TE
VSS2
TE
LD
VSS1
SE VSS3

LD

N1
3 .PCB ass'y VDD

(7240 9934)
N2
VDD
VSS2
VDD
N3
VDD
XT XTB
VSS2
N4
VDD XTB

XT
VSS1
VC
AC
VDD
VCH VSS2 BD1 L VSS3
VDD
VDD
KI1 L
KI2
VDD VSS2 L VDD VC VCC
L VDD VCH
VDD
KI5

VDD
KI5

C4 5 .Capacitor / Chip 8 .Coil L 12 .Transistor / Chip Tr3 4 .Capacitor / Chip C3

(7103 4175) (7020 0503) (2253 0322) (7103 3866)

7 .Capacitor / Tantalum C5 Tr 13 .Transistor / Mold CG1 Capacitor / Chip 4 .Capacitor / Chip C2

(2865 1722) (7101 1151) (Unrepairable) (7103 3866)
4 .Capacitor / Chip C1
(7103 3866)

Top view of PCB ass'y Bottom view of PCB ass'y

3-3. N1~N4 PADS

Never solder or desolder these pads, because they have been selected best in the production line.
A new PCB ass'y as a spare parts will be supplied with factory adjustment of these pads.

3-4. ACCURACY SETTING SYSTEM

The accuracy of QW-1637 is set by a selected Capacitor / Chip ( CG1 ) in the prodaction line.
There fore, in case of any defect on the Oscillator / Quartz or the LSI, replace the PCB ass'y with new one.

-5-
4. EXPLODED VIEW : QW-1637

*For the details of

Case / Center ass'y, Packing /
O-ring, Cover / Back ass'y,
Screw (Back) and Spring / Coil
please refer to the Parts List Case / Center ass'y
P / L-527 or Parts Price List
P.P.L.-527.

Packing / O-ring (Back)

1a (7001 2781)
1b (7001 2783)

17 (7010 4630)

2 (7020 5969)

25 (7233 2268)
15 (7233 2220)

24 (7230 0805)

3 (7240 9934)
PCB ass'y
19 (7231 1806)

27 (7236 0275)
20 (7231 1783)

23 (7230 0854) 25 (7201 9599)

16 (7234 1424)

Spring / Coil

Battery / Lithium (CR1616)

18 (7231 1807)

21 (7207 8776) 21 (7207 8776)

Cover / Back ass'y

Screw (Back)

-6-
5. PARTS LIST : QW-1637
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 ............................... Very Important
B Rank ............................... Important
C Rank ............................... Less important
3. Batteries in Bulk pack on the tray will be supplied from our Overseas Spare Parts Section under charge basis.
Batteries in Brister pack will be supplied from our Sales Department.
4. As for order/supply of spare parts, refer to the separate publication “GUIDEBOOK for spare parts supply”.

Item Code No. Parts name Specification Applicable Q R

1a 7001 2781 LCD C1637-01P QW-1637CM01 1 A

1b 7001 2783 LCD C1637A-01PN QW-1637CM03 1 A
2 7020 5969 EL NEL-1637-A-02 QW-1637CM01/03 1 A
3 7240 9934 PCB ass'y Q252495*1 QW-1637CM01/03 1 A
4 7103 3866 Capacitor/Chip GRM40-002F104P25PT QW-1637CM01/03 3 B
5 7103 4175 Capacitor/Chip GRM42-602F684P16PT QW-1637CM01/03 1 B
6 7103 4446 Capacitor/Chip CM21Y5V104P25AT QW-1637CM01/03 1 B
7 2895 1722 Capacitor/Tantalum TEMSVA0J106M8R QW-1637CM01/03 1 B
8 7020 0503 Coil OL3.3X1.6DR-04TB QW-1637CM01/03 1 B
9 7102 7646 Resistor/Chip ERJ6GEYJ163V QW-1637CM01/03 1 B
10 7101 5854 Transformer TRS-626 QW-1637CM01/03 1 B
11 7101 5630 Transistor 2SC4181-T1 QW-1637CM01/03 1 B
12 2253 0322 Transistor/Chip 2SD1819A-R,S(TX) QW-1637CM01/03 1 B
13 7101 1151 Transistor/Mold 2SD1824(TX) QW-1637CM01/03 1 B
14 7233 2030 Cushion 1588 Q456182-1 QW-1637CM01/03 1 C
15 7233 2220 Cushion 1604 Q458124-1 QW-1637CM01/03 1 C
16 7234 1424 Housing 1637 Q150791A-1 QW-1637CM01/03 1 C
17 7010 4630 Interconnector 1637 Q459492-1 QW-1637CM01/03 2 C
18 7231 1807 Plate/Main 1637 Q252400-1 QW-1637CM01/03 1 C
19 7231 1806 Plate/Switch 1637 Q459471-1 QW-1637CM01/03 1 C
20 7231 1783 Plate/Terminal 1604 Q458104-1 QW-1637CM01/03 1 C
21 7207 8776 Screw/Tapping Q426010-1 QW-1637CM01/03 4 C
22 7233 2268 Spacer 1637 Q358191-1 QW-1637CM01/03 1 C
23 7230 0854 Spring/Coil 1009 Q432519A-1 QW-1637CM01/03 1 B
24 7230 0805 Spring/Coil 1405-1 Q453652-1 QW-1637CM01/03 2 B
25 7201 9599 Spring/Coil 967-1 Q430081-1 QW-1637CM01/03 1 B
26 7229 0623 Tape/Adhesive 1416 Q450991-1 QW-1637CM01/03 1 C
27 7236 0275 Terminal/Battery (-) 262 Q37079E-4 QW-1637CM01/03 1 C
Battery/Lithium CR1616 1

*The module QW-1637 is assembled directly into the case. And Module/without Movement as
the spare parts are not available.

*For the price, new parts and minimum quantity of the above parts, please refer to the Parts Price List P.P.L-527.

Notes: Q – Used quantity

R – Rank
-7-
6. PRECAUTIONS FOR REPAIR : QW-1637

6-1. AC (ALL CLEAR)

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 positive (+) side of the battery or main plate with the metalic tweezers.
The contact should be made for about two seconds.
For 2 seconds after the AC operation, do not make any button operations on these modules.

Metallic tweezers

6-2. ACCURACY CHECKING

Check the accuracy of the module with the quartz timer after switching the module to "ACCURACY CHECKING
MODE".

The operations are shown below:

A) SWITCHING TO "ACCURACY CHECKING MODE"

Keep pushing the B button and continuously push the A , M buttons at the same time at the normal
time keeping 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 CHECKING MODE"

Push any button.
Then the display is returned to its original state.
NOTE: The "ACCURACY CHECKING MODE"
will automatically return to the regular
mode in 1 ~ 2 hour(s) without any operation.

-8-
6-3. LINK REMOVAL OF EXPANSION BAND
On the model A210WE which the module without movement QW-1637 is used, expansion type band is
employed. And how to make link removal of the expansion band is as follows.
1. Bend and make flat the thin plates which is covering the band with minus precision screw
driver.
Both upper and lower plates have to be bended.
2. Take out the pins from inside of the band.
Be sure to take out the pins from both side of the band.
Then the band will be separated.
3. Repeat the above 1 and 2 procedure, and make the link removal.
4. After the length of the band is adjusted, insert again the pins on both side in order to
connect again the band.
5. Bend vertically the thin plates of the band.

Precision minus screw driver

Pin
Thin flat plate

Expansion band

-9-
Ver. 1 : Correction of page 6 and 7

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