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1.How to replace the battery

Please use the specified battery to keep the stable performance for a long time.

Please install the minus part of the battery towards inside of the watch.

Install the battery under the circuit cover as illustrated below Fig.[1] and Fig.[2].

2.How to remove the stem

3.How to set the hands

Do not turn the hand forcibly.

4.How to remove the hands

When removing the hands, use exclusive fork-shaped tools.

Do not remove the dial under the condition that any hands are set.

5.How to test the accuracy

When measuring the time accuracy, use specified Quartz Tester and change the gate time in 10 seconds.

When removing the stem, pull out the crown at 1st click position and then remove the stem while
pressing the hollow portion of setting lever by tweezers. (Refer to the Fig.[3].)

Each hand moves at step interval. Set the each hand at correct position according to the scale on the
dial in order not to make a mistake in reading time.

When installing or changing the battery, it is recommended to remove three battery clamp screws first,
then remove the battery clamp not to damage the movement parts.
If you install the battery without removing the battery clamp, please install the battery from [

] direction

as illustrated below Fig.[1].

System-reset is required as below.
After installing battery, short the circuit pattern “AC” to battery clamp for more than 2 seconds.
Then, under time setting condition, set 1/100 second chronograph / 1/10 second chronograph hand,
second chronograph hand and 40 minute chronograph hand at "0" position.

Cal.

YM82A

Attention for assembly

30/Jan./'15

Rev. :  01

Battery

Battery clamp

Circuit cover

Fig.[2] A section

A

Fig.[1]

Fig.[3] Crown pulled out at 1st click

P. 9 

Summary of Contents for YM82A

Page 1: ...Watch Movement Specification and Drawing CHRONOGRAPH Cal YM82A Movement Size Casing Diameter Height Battery Life 12 Ø 27 0mm 3 7mm 3 years ...

Page 2: ...ng 01 4 Hand setting stem 01 5 Magnetic shield plate 01 6 Dial 01 01 7 01 Dial 02 01 7 02 Holding ring for dial 01 02 8 01 Holding ring for dial 02 02 8 02 Attention for assembly 01 9 Attention of casing part structure 01 10 Attention of dial design 01 11 Operation 01 01 12 01 Operation 02 01 12 02 ...

Page 3: ...onograph hand 0 025μN m 40 minute chronograph hand 0 03μN m Second chronograph hand 0 06μN m Minute hand 0 70μN m Moment of Inertia Second chronograph hand less than 0 2 μg m 5 BATTERY Type Size Silver oxide battery φ9 5mm t 2 73mm Recommended battery SR927W Nominal voltage 1 55 V Battery life Approx 3 years 120 minutes chronograph operation per day Driving current consumption Approx 0 80μA Operat...

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Page 13: ...tion of setting lever by tweezers Refer to the Fig 3 Each hand moves at step interval Set the each hand at correct position according to the scale on the dial in order not to make a mistake in reading time When installing or changing the battery it is recommended to remove three battery clamp screws first then remove the battery clamp not to damage the movement parts If you install the battery wit...

Page 14: ...er to the following picture not to install magnetic shield plate incorrect direction Cal YM82A Attention of casing part structure 30 Jan 15 Rev 01 When set and remove the hour hand repeatedly it may reduce the hand fixing torque because the hour wheel is made by plastic To ensure the enough fixing torque it isn t recommended to re assemble the hour hand more than five times Use the specified holdi...

Page 15: ...240 degrees from the start point The start position of the 40 minute chronograph hand can be set on the arbitrary positions in the range of 360 degrees Cal Attention of dial design 30 Jan 15 Rev 01 YM82A When the 40 minute chronograph hand set to 0 position the 40 minute chronograph hand turns a full round The dial index must be designed on the assumption that the 40 minute chronograph hand turns ...

Page 16: ...uttons at the same time for longer than 2 seconds It is necessary to set the 0 position after system reset 2 How to view the demonstration Crown position 0 click Reset the chronograph press 4H button for 3 seconds Press 2H button for 2 seconds here will allow you to resume the procedure again as indicated by the arrow if necessary 1 100 second chronograph and 1 10 second chronograph hands turns a ...

Page 17: ...increments capable of timing 120 minutes After the chronograph is started or restarted or split released the 1 100 second chronograph and 1 10 second chronograph hands move for 3 minutes and automatically stop at the 0 position counting continues inside 40 minute chronograph hand When the minute counting reaches 41 minutes the hand immediately returns and continues counting from 1 position and aga...

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