Casio QW-1789 Service Manual & Spare Parts List Download Page 3

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1. SPECIFICATIONS: QW-1789

Notes: Conditions of battery life.

• EL backlight is used 3 times per day ------------------------------- 2 years
• EL backlight is used 5 times per day ----------------------------- 1.5 years

2. OPERATION CHART: QW-1789

50

40

30

20

10

The physical configuration the watches covered by this User’s Guide differs accord-
ing to model as shown below. Functions and operation procedures are identical, re-
gardless of physical configuration.

To Set Time

1) Pull the crown out when the second hand is at 12 o’clock position and the second

hand stops.

2) Turn the hands clockwise and put the watch four or five minutes forward. Then

back them out.

3) In accordance with a time signal, push the crown in.

About the backlight

Pressing 

L

L

L

L

L

 illuminates the display for about two seconds.

The backlight of this watch employs an electroluminescent (EL) light, which loses
its illuminating power after very long term use.

Frequent use of the backlight shortens the battery life.

For watch with the elapsed time bezel
Rotate the elapsed time bezel to align the 

 mark

with the minute hand.
After certain amount of time elapsed, read the grad-
uation on the elapsed time bezel which the minute
hand points to.
The elapsed time is indicated.

Some water resistant models are equipped
with a screw lock crown.

With such models, you must unscrew the
crown in the direction noted in the illustra-
tion to loosen it before you can pull it out.
Do not pull too forcibly on such crowns.

Also note that such watches are not water
resistant while their crowns are  loosened.
Be sure to screw the crowns back in as far
as they will go after making any setting.

Crown

(Light button) 

L

L

L

L

L

Crown

L

L

L

L

L

 (Light button)

Elapsed time bezel

Module (Movement No.)

QW-1789

Display system

Three hands & EL backlight

Accuracy setting

Unadjustable

Accuracy

±

20sec./month

Number of jewels

0

Time correction

Crown type

Battery type

CR2016

Battery life

Approx. 3 years

Current consumption

1.18 

µ

A maximum

Ambient temperature range 

–5

°

C ~ 55

°

C

Functions

Shock resist

Summary of Contents for QW-1789

Page 1: ...QW 1789 MODULE NO R REF NO S M 625 DEC 1998 MRG 121 SERVICE MANUAL PARTS LIST WITHOUT PRICE Ver 1 Oct 2001 ...

Page 2: ... 2 OPERATION CHART QW 1789 1 3 EXPLODED VIEW QW 1789 2 4 PARTS LIST QW 1789 3 5 PRECAUTIONS FOR REPAIR QW 1789 5 1 HOW TO REMOVE THE BATTERY 4 5 2 HOW TO REMOVE CROWN WITH STEM 4 5 3 HOW TO REMOVE HANDS 5 5 4 HOW TO INSERT THE BATTERY 5 ...

Page 3: ... the backlight shortens the battery life For watch with the elapsed time bezel Rotate the elapsed time bezel to align the mark with the minute hand After certain amount of time elapsed read the grad uation on the elapsed time bezel which the minute hand points to The elapsed time is indicated Some water resistant models are equipped with a screw lock crown With such models you must unscrew the cro...

Page 4: ...7 Oil Moebius 9030 Grease Moebius 8200 2 12 7436 9666 5 2 14 7437 7541 7 2 6 7436 9547 8 2 7 7241 0215 0 2 3 7437 9221 C 2 2 7436 9505 E 2 19 7438 1860 F 2 22 7438 1853 I 2 1 7436 9498 K 2 8 7436 9638 H 2 5 7436 9631 N Crown with stem 4 2 20 7235 0894 2 Disassembling order 1 to P Reasembling order P to 1 1 7230 1013 Lubrication For the detailed information of Crown with stem refer to Parts List P ...

Page 5: ... 01 1 A 2 4 7436 9554 LEVER RESET 5D3J301 QW 1789 01 1 C 2 5 7436 9631 LEVER SETTING 5D3R601 QW 1789 01 1 C 2 6 7436 9547 LEVER STOP 5D3I901 QW 1789 01 1 C 2 7 7241 0215 PCB ASS Y 5D3J408 QW 1789 01 1 A 2 8 7436 9638 ROTOR 5D34J01 QW 1789 01 1 B 2 9 7436 9512 SCREW D7010 QW 1789 01 1 C 2 10 7436 9652 SCREW D7011 QW 1789 01 1 C 2 11 7435 8277 SCREW D6005 QW 1789 01 2 C 2 12 7436 9666 SCREW D7012 QW...

Page 6: ...EMOVE THE BATTERY Then you can see the setting lever through the hole at the point of arrow 1 2 Unscrew the crown with stem 3 Push the setting lever while the crown is pushed in Use fine stick such as pin side of the band adjusting tool Note Do not push the setting lever with too much force 4 Pull out slowly the crown with stem from the watch while pushing on the setting lever Note To remove the c...

Page 7: ...me way as the other watches Short circuit of P C B ass y supporter and Battery Touching of the hook to the gasket of Battery 5 4 HOW TO INSERT THE BATTERY 1 Place the new battery on the P C B ass y supporter 2 Set the battery on 2 and 4 o clock side of the hooks of the P C B ass y supporter 3 Push down the battery at 9 o clock side of the hook Then the battery will be inserted 4 Be sure not to bre...

Page 8: ...CASIO TECHNO CO LTD Overseas Service Division Nishi Shinjuku Kimuraya Bldg 1F 5 25 Nishi Shinjuku 7 Chome Shinjuku ku Tokyo 160 0023 Japan Ver 1 Correction of parts list pages 2 3 ...

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