[SPECIFICATIONS]

ItemCal. No.

Power generator

Rechargeable battery

Monthly rate: less than 15 seconds (worn on the wrist at temperature range between 5 and 35 ºC)

Nil

Use 10-second gate

Movement: less than 0.80 µA Circuit block: less than 0.20 µA

Automatic generating system

MT920 Titanium carbon lithium rechargeable battery

0.9V - 2.20V

From full charge to stoppage: approximately 6 months

6 jewels

1/21

PARTS LIST/ TECHNICAL GUIDEKINETIC Cal. 5M84A

5M84A

Driving system

Additional function

Crown operation

Loss/Gain

Regulation system

Gate time for rate measurement

Current consumption

Power supplyOperating

voltage range

D u r a t i o n o f charge

Number of jewels

Interval of hands movements

Normal position

1st click position

2nd click position

Coil resistance

• 3hands (Hour/Minute/Second)•Calendar Date(datedial) Day (retrograde day indicator)

1 second

Steppingmotor2pieces

• Powerreserveindicator(secondhand)

• Energydepletionforewarningfunction

• Overchargepreventionfunction

• Electroniccircuitresetfunction

• Dayanddatecorrectionfunction

• Secondhandstopfunction

Free

Day and date setting

•　Diameter Outside : Ø 27.6 mm Casing : Ø 27.0 mm • Height:4.3 mm

Timesetting(HourandMinute)

5M84A

Movement

Coil block: 1.70 - 2.10 KΩGenerating coil block: 280 - 380Ω

Cal. 5M84A

2/21

SPECIFICATIONS

10 seconds 20 seconds 30 seconds

Between 7 days and 1 month

Approx.1 month

Approx. between4and6months

Between1 and 7 days

5 seconds

POWERRESERVE

QUICKMOVEMENTOFSECONDHAND

SEIKO KINETIC Cal. 5M84 is an analogue quartz watch equipped with the Kinetic technologydevelopedbySEIKO. Itgeneratestheelectricenergytopowerthewatch,utilizingthemovementofyourbody,andstoresitintherechargeablebattery,whichrequiresnoperiodicalreplacementunlikeconventional button-type batteries.

1. Whenthewatchstopscompletely,or ifyoufindthesecondhandmovingattwo-secondintervals,swing the watch from side to side at a rate of twice a second.

1. By swinging the watch

2. By using the KINETIC Energy Supplyer YT02A

2. 250 swings will reserve up to 1 day of power.

The second hand will start moving at one-second intervals.

Setthecrowntothe5Mposition.

• Make sure that the watch is correctlypositioned as it may affect the amount of power generated.

• Theamountofpowergeneratedmayvarydepending the models of the watch.

5M

Cal.5M84Aisequippedwithapowerreserveindicator.Thecurrentpowerreservecanbecheckedbyreading the posisiton of the second hand after pressing the button at the 2 o'clock position.

* The second hand will resume normal movement after the indicated 5, 10, 20 or 30 seconds have elapsed.

* To allow easy reading of the second hand, press the button when the second hand is at the 12 o’clock position.

* It is recommended that the watch be swung further until 2 days of power is reserved. As a guideline of recharging, additional 200 to 250 swings, about 450 to 500 swings in total will reserve 2 days of power.

POWER RESERVE INDICATOR

POWERRESERVE

NUMBER OFSWINGS 250 450 ~ 500

1 DAY 2 DAYSAPPROX.6 MONTHS

FULL

FEATURES

HOW TO CHARGE THE WATCH

Cal. 5M84A

3/21

PARTS LISTDisassembling procedures Figs. : 1 65

Reassembling procedures Figs. : 65 1

Lubricating: Types of oil

Watch Oil AO-3

Watch Oil AO-2

SEIKOWatchOilS-6

Siliconeoil500,000c.s.

Oil quantity

Normalquantity

Please see the remarks on the following pages.Lubricatingofsomepartsisshownin“II.REMARKSONDISASSEMBLINGANDREASSEMBLING”.

1 CASEBACK

2 CASEBACKGASKET

4 MOVEMENT

7 BUTTONSPRING

5 BUTTONSPRINGCLIP

6 BUTTON

3 CROWN

[CASING PARTS ASSEMBLY]

26

27

28

0012354DAY LEVER GUARD SCREW

0837503DAY LEVER GUARD

1002516DAY WHEEL

1017503DAY LEVER

1018504DAY LEVER SPRING

0871502DAY STAR WHEEL

0491735DIAL WASHER

0022247DAY LEVER BRIDGE SCREW

0808514DATE DIAL GUARD

0878***DATE DIAL

0810660DATE JUMPER

0989660INTERMEDIATE DAY CORRECTOR WHEEL

0737670DATE CORRECTOR WHEEL

0962670INTERMEDIATE DATE CORRECTOR WHEEL

0816670DATE DRIVING WHEEL

0271607HOUR WHEEL

DAY LEVER BRIDGE

HOLDING RING FOR DIAL0866***

11

12

14

15

16

17

18

19

20

21

22

23

24

25

SPACER FOR DIAL104408564

4408559

XIII

IIIII

IIII

II

VVI

VVIII

XI

XXI

SEIKOPREMIERKINETIC

MONTUEWEDTHU

FRI

SAT

SUN

RETROGRADE DAY HAND

DIAL

HOUR, MINUTE AND SECOND HANDS

9

8

13

Cal. 5M84A

4/21

PARTS LIST

Please see the remarks on the following pages.Lubricatingofsomepartsisshownin“II.REMARKSONDISASSEMBLINGANDREASSEMBLING”.

[CALENDAR MECHANISM/ DIAL AND HANDS SETTING]

Cal. 5M84A

5/21

PARTS LIST

Please see the remarks on the following pages.Lubricatingofsomepartsisshownin“II.REMARKSONDISASSEMBLINGANDREASSEMBLING”.

29 OSCILLATINGWEIGHTSCREW 0022490

30 OSCILLATINGWEIGHT 0500665

31 OSCILLATINGWEIGHTWHEEL 1002662

32 RECHARGEABLEBATTERYCLAMPSCREW 0022247

33 RECHARGEABLEBATTERYCLAMP 4225519

35 RECHARGEABLEBATTERYUNIT 302324T

36 CIRCUITBLOCKCOVERSCREW 0022247

37 CIRCUITBLOCKCOVER 4457760

38 CIRCUIT BLOCK 4000789

39 OSCILLATINGWEIGHTBRIDGESCREW 0022247

40 CONDUCTIVEPLATE 4459500

41 OSCILLATINGWEIGHTBRIDGE 0198662

42 GENERATINGCOILBLOCK 4002514

43 INTERMEDIATEWHEELFORGENERATINGROTOR 1002660

34 INSULATORFORRECHARGEABLEBATTERY 4216519

44 GENERATINGROTOR 4146518

45 GENERATINGSTATOR 4239519

46 COILBLOCKSCREW 0022247

47 COILBLOCK 4002516

[AUTOMATIC GENERATING MECHANISM/ELECTRONIC CIRCUIT]

Cal. 5M84A

6/21

PARTS LIST

Please see the remarks on the following pages.Lubricatingofsomepartsisshownin“II.REMARKSONDISASSEMBLINGANDREASSEMBLING”.

49 TRAINWHEEL BRIDGE 0125661

50 TRAINWHEELSETTINGLEVER 0391660

51 RECHARGEABLEBATTERY CONNECTION(+) 4271515

52 FOURTHWHEELANDPINION 0241667

54 FIFTHWHEELANDPINION 0701670

55 STEPROTOR 4146531

56 MINUTEWHEEL 0261670

57 SETTINGWHEEL 0281670

58 SWITCHLEVER 4450730

59 YOKE 0384661

60 SETTINGLEVER 0383662

61 ROTORSTATOR 4239559

62 SETTINGSTEM 0351 ***

63 CLUTCHWHEEL 0282672

64 CENTERWHEELANDPINION 0221667

65 MAINPLATE 0100564(FORSTANDARDCASETYPE)

53 THIRDWHEELANDPINION 0231530

48 TRAINWHEELBRIDGESCREW 0022247

[GEAR TRAIN MECHANISM/SETTING MECHANISM]

Cal. 5M84A

7/21

PARTS LIST

l How to find the correct parts, if not determined by 4 digit caliber numberFollowing parts are determined based on the design of watches, such as hands height, dial color,and design of cases. Please refer to the SEIKO WATCH PARTS CATALOGUE in order to choosecorresponding parts.

Remarks

0022247• DAYLEVERBRIDGESCREW (3PCS.)• RECHARGEABLEBATTERYCLAMPSCREW(2PCS.)• CIRCUITBLOCKCOVERSCREW (2PCS.)• OSCILLATINGWEIGHTBRIDGESCREW(2PCS.)• COILBLOCKSCREW (1PC.)• TRAINWHEELBRIDGESCREW (1PC.)

0022490• OSCILLATINGWEIGHTSCREW (1PC.)

0012354• DAYLEVERGUARDSCREW (1PC.)

11 HOLDINGRINGFORDIAL0866***

22 DATEDIAL

Part code Position of crown Position of calendar frame Coloroffigure Color of background

0878B42 3 o'clock 3 o'clock White Black

0878B43 3 o'clock 3 o'clock Black White

0878 B25 3 o'clock 6 o'clock White Black

0878 B26 3 o'clock 6 o'clock Black White

62 SETTINGSTEM0351653

ThetypeofSETTINGSTEMisdeterminedbasedonthedesignofcases.

CheckthecasenumberandrefertoSEIKOCasingPartsCataloguetochooseacorrespondingpart.

SCREWS

Cal. 5M84A

8/21

PARTS LISTl Tools and consumables required for disassembling/reassembling

• Movement holder

Universalmovementholder(S-682)

• Watch oils

SEIKOwatchgrease(S-6)andwatchoils(AO-3andAO-2)

S-6 AO-2AO-3

Cal. 5M84A

9/21

TECHNICAL GUIDEREMARKS ON DE-CASING/CASING/DIAL AND HAND SETTING

l How to set the RETROGRADE DAY HAND at the first day position

MONTUEWED

THUFRI

SATSUN

Make sure the DAYLEVER and the DAYSTARWHEELare at the 1st day position by listening the sound when changing the day.

1. Turnthecrownclockwiseatthefirstclickpositionuntilyouheartheuniquesoundwhenchangingfrom7thday to 1st day.

2. Install the hand pointing to the 1st day (MON) position. MON

TUEWEDTHUFRI

SATSUN

3. Make sure the day changes correctly and smoothly byturningthecrownatthefirstclickposition.

MONTUEWED

THUFRI

SATSUN

8 RETROGRADEDAYHAND

Cal. 5M84A

10/21

TECHNICAL GUIDE35 RECHARGEABLEBATTERYUNIT

ThoughtheRECHARGEABLEBATTERYUNITforCal.5M8SeriesisofacompletelydifferentfromCal.5M6Series,theyhaveacloseresemblanceinshape.Theycanbediscriminatedbytheshapesoftheirminusleadterminalsasillustratedbelow.MakesuretouseappropriateRECHARGEABLEBATTERYUNIT,inservicingbycheckingthis.

Minus lead terminal

[ RECHARGEABLE BATTERY UNIT for Cal. 5M8 Series ]

• How to remove

Insertthetipoftweezersintothe“C”ﾓportion gapintheillustrationatright,andpryuptheRECHARGEABLEBATTERYUNITtoremoveit.

• How to install

Setthe“A“ portion of the minus lead terminal totheholeofthemainplate,andpushthe“B“ portion down vertically so that the RECHARGEABLE BATTERY UNIT is wellseated in position.

Note: Takecarenottoshort-circuitthe(+)and(-)terminals,asthiswilldeterioratethebattery unit.

“A“ portion

Main plate

ﾒ“C“ portion Minus lead terminal

Rechargeable battery plus terminal

ﾒ“B“ portion

Minus lead terminal

[ RECHARGEABLE BATTERY UNIT for Cal. 5M6 Series ]

No hole With hole

Cal. 5M84A

11/21

TECHNICAL GUIDE38 CIRCUITBLOCK 4000789

[ CIRCUIT BLOCK for Cal.5M6 Series ][ CIRCUIT BLOCK for Cal. 5M8 Series ]

TheCIRCUITBLOCKforCal.5M8SeriesandthatforCal.5M6Serieshaveacloseresemblanceinshape.TheycanbediscriminatedinthepointthattheCIRCUITBLOCKforCal.5M8SerieshasnocondenserunlikethatforCal.5M6Series.WhenrepairingtheCIRCUITBLOCK,checkthatithasnocondenser to make sure you are using the proper one.

Having no condenser Condensers

Cal. 5M84A

12/21

TECHNICAL GUIDEREMARKS ON DISSASEMBLING AND REASSEMBLING THE MOVEMENT

l How to remove the SETTING STEM before dismantling the movement

50 TRAINWHEELSETTINGLEVER

58 SWITCHLEVER

59 YOKE

60 SETTINGLEVER

• Settingpositionandlubricating

Refer to the illustration at right.

Train wheel setting lever

Setting lever

Switch leverYoke

l SETTING MECHANISM

Crown position: 1st click position

PushtheSETTINGLEVERgently(refertothepictureontheright)inordertodisengageitfromtheSETTINGSTEM.Thenpulloutthecrownwithstemcompletely.

Push here

Cal. 5M84A

13/21

TECHNICAL GUIDE

l Gear train mechanism - train wheels, setting position and lubricating

52 FOURTHWHEELANDPINION

53 THIRDWHEELANDPINION

54 FIFTHWHEELANDPINION

55 STEPROTOR

56 MINUTEWHEEL

57 SETTINGWHEEL

• Settingpositionandlubricating

Refer to the illustrations below for the setting position and lubrication of the respective wheels.

Fifth wheel and pinion

Step rotor

Setting wheel

Fourth wheel and pinion

Minute wheel

Third wheel and pinion

Center wheel and pinion

Step rotorFifth wheel and pinion

Fourth wheel and pinion

Third wheel and pinion

64 CENTERWHEELANDPINION

Note: Besuretoobservetheposition,typeofoilandquantityoflubricationspecifiedin the illustration.

Minute wheel

Setting wheel

Cal. 5M84A

14/21

TECHNICAL GUIDEl Automatic generating mechanism

• Howtoremove

Insert the tip of tweezers into the “C”portiongapintheillustrationatright,andpry up the RECHARGEABLE BATTERYUNIT to remove it.

• Howtoinstall

Set the “A” portion of the minus leadterminal to the hole of the MAINPLATE,andpushthe“B”portiondownverticallyso that the RECHARGEABLE BATTERYUNIT is well seated in position.

Note: Take utmost care not to short-circuit the (+) and (-) terminals, as this willdeteriorate the battery unit.

“A” portion

Main plate

ﾒCﾒ portion Minus lead terminal

Rechargeable battery plus terminal

ﾒBﾒ portion

39 OSCILLATINGWEIGHTBRIDGESCREW

41 OSCILLATINGWEIGHTBRIDGE

Before tightening the OSCILLATING WEIGHTbridgescrew,checkthattheupperpivotoftheGENERATINGROTOR is inserted properly into the pivot jewel.

Be sure to lubricate the upper and lower pivots of GENERATING ROTOR and INTERMEDIATEWHEEL FOR GENERATING ROTOR with the proper oil in the quantity specified in theillustration.

Lubricate the ball-bearing of the OSCILLATINGWEIGHT BRIDGE as shown in the illustration at right.

Intermediate wheel for generating rotorGenerating rotor

43 INTERMEDIATEWHEELFORGENERATINGROTOR

• Lubricating

Refer to the illustration at right.

Note: Besuretoobservetheposition,typeofoilandquantityofthelubricationspecifiedin the illustration.

• Lubricating

Cal. 5M84A

15/21

TECHNICAL GUIDEREMARKS ON INSPECTION AND MEASUREMENT

l Value checking

How to measure the current consumption for the whole movement

1. Remove the RECHARGEABLE BATTERYUNIT (36), an INSULATOR (35) and the BATTERYCLAMPWITHSCREWS (33) and (34), then reassemble theOSCILLATINGWEIGHT WHEEL (32) and OSCILLATINGWEIGHT(31) and tighten the SCREW (30) temporary in order to make the movement ready for measurement.

2. Connect the (-) probe of the tester to the input terminal (-) of the CIRCUIT BLOCK and (+)probe to theothermetalpartofthe movement, such as CIRCUIT BLOCK COVER. “a” portion

Circuit block cover

* When measuring the current consumption using the SEIKO digital multi-tester (S-860), use the range of 40 μ A of SUPPLY V (= 1.55 V) & GATE TIME (2 S)

Cal. 5M84A

16/21

TECHNICAL GUIDE3. SwingtheOSCILLATINGWEIGHTas the illustration

for more than three seconds so that the movement detects the electricity generation and it turns to the normal hand movement mode.

Note: When swinging the OSCILLATINGWEIGHT,takecare so as not to touch the probes of the tester.

4. Wait for more than 10 seconds until a stable measurement is obtained, and then read themeasurement.

5. Make sure the read value is less than 0.80 μA.

Cal. 5M84A

17/21

TECHNICAL GUIDEHow to measure the current consumption for the CIRCUIT BLOCK alone

[Structure of the CIRCUIT BLOCK]

Coil output terminal

Crystal unit

Input terminal ( - )C-MOS-IC

Input terminal (+)

Automatic generating input terminal

1. To measure the current consumption for the CIRCUIT BLOCKalone,connecteachprobetotheappropriate positive (+) or negative (-) input terminal of the CIRCUIT BLOCK (please refer to “Structureofthecircuitblock”below).

* When measuring the current consumption using the SEIKO digital multi-tester (S-860), use the range of 40 μ A of SUPPLY V (= 1.55 V) & GATE TIME (2 S)

2. InordertoturnthemodeoftheC-MOS-ICintothenormalhandmovementmode,short-circuititbytouching“A”portionandtheinputterminal(-)withtweezersformorethanthreeseconds.

* When measuring the current consumption for the CIRCUIT BLOCK alone, be careful not to damage or deform the pattern of the CIRCUIT BLOCK.

3. Read the measurement when a stable measurement is obtained.

4. Makesurethereadvalueislessthan0.20 μA.

Cal. 5M84A

18/21

TECHNICAL GUIDEl Value checking

• Coilresistance(coilblocks)

Check the resistance of each COIL BLOCK if they are within the range in the following table.

COIL BLOCK 4002516 1.7 KΩ - 2.1 KΩ

GENERATINGCOILBLOCK 4002514 280 Ω - 380 Ω

l Checking the automatic generating system

1. Apply the probes of the tester as shown in the illustration, and measure the voltage ofthe RECHARGEABLEBATTERY. The obtained voltageiscalledthe“initialvoltage”.

Notes:

* When applying the minus probe of the tester to the RECHARGEABLEBATTERY,take care not to short-circuit the lead terminal (-) and the RECHARGEABLEBATTERYCLAMP.

* If a short-circuit has occurred, leavethe watch untouched for more than 10 minutes,andmeasurethevoltageagain,checking that a stable measurement is obtained.

2. Closethecasebacktentatively,andswingthewatch from side to side 200 times at a rate of2 to3swingsasecond,makinganarcofapproximately 20 cm.

Cal. 5M84A

19/21

TECHNICAL GUIDEOperation Function Checkpoint

MONTUEWED

THUFRI

SATSUN

Pull out the crown to the 2nd click and push it back in to the normal　position. Repeat the same several times.

Settingmechanism-switching the function of the time setting

Make sure that it has a click at each position and the stem is not pulled off.

MONTUEWED

THUFRI

SATSUN

Pull out the crown to the 1st click,thenturnit.

Calendar mechanism - correcting the date (andday),ifavailable

Make sure that the date (and day) changes smoothly.

MONTUEWED

THUFRI

SATSUN

Pull out the crown to the 2nd click*,thenturnit.

Secondhandstopfunction (if available)

Make sure that the second hand stops when the crown is pulled out to the 2nd click.

Settingmechanism- hour and minute hand setting

Make sure that the hour and minute hands move smoothly (without touching each other or touching the surface of the dial or inside of the glass).

Handsinstallation

Calendar mechanism - date change

Make sure that the date changes when the hour and minute hands pass around midnight.

• If thewatchdoesnothavecalendarmechanism,check theﾓsame with the crown at the 1st click position.

Cal. 5M84A

20/21

TECHNICAL GUIDEl Water resistance test

l Accuracy test

Checkthewaterresistanceaccordingtothedesignatedspecificationofthewatch.

Measure the rate and make sure the value shows within ±0.50 s/d.

Use 10 seconds gate of the tester.

Marking on the case back Test method Applied pressure

WATERRESISTANT(WATERRESIST) Air overpressure test 3 BAR

WATERRESIST5BAR

Water overpressure test and condensation test

5 BAR

WATERRESIST10BAR 10 BAR

WATERRESIST15BAR 15 BAR

WATERRESIST20BAR 20 BAR

SCUBADIVER’S(AIRDIVER’S)150m

Water-tightness and water overpressure test and

condensation tests before/after water overpressure

test

18.75 BAR = 150 (m) times 0.125

SCUBADIVER’S(AIRDIVER’S)200m 25 BAR = 200 (m) times 0.125

He-GASDIVER’S300m 37.5 BAR = 300 (m) times 0.125

He-GASDIVER’S600m 75 BAR = 600 (m) times 0.125

He-GASDIVER’S1000m 125 BAR = 1000 (m) times 0.125

Problems Possible causes Methods of repair and checkingThe OSCILLATINGWEIGHT rotates at an abnormally high rate,andnochargingismade.

1) The COIL of the GENERATINGCOILBLOCK is broken.

2) The pivot of the GENERATINGROTOR is broken. (The pinion of the GENERATINGROTORand the gear of the INTERMEDIATEWHEELFORGENERATINGROTOR are out of mesh.)

1) Check the resistance of the GENERATINGCOILBLOCK. Replace the GENERATINGCOILBLOCK if the COIL is broken.

2) Remove the broken piece of the GENERATINGROTOR,andreplaceand lubricate the GENERATINGROTOR. (Overhaul and clean if necessary.)

The OSCILLATINGWEIGHT will not rotate.

1) The gear of the OSCILLATINGWEIGHT and the pinion of the INTERMEDIATEWHEELFORGENERATINGROTOR are out of mesh.

2) The pivot of the GENERATINGROTOR is broken. (The pinion of the GENERATINGROTOR and the gear of theINTERMEDIATEWHEELFORGENERATINGROTOR engage with each other.)

1) If the gear of the OSCILLATINGWEIGHT and the pinion of the INTERMEDIATEWHEELFORGENERATINGROTORareintact,reassemble them to the movement.

2) Remove the broken piece of the GENERATINGROTOR,andreplaceand lubricate the GENERATINGROTOR. (Overhaul and clean if necessary.)

The current consumption for the whole of the movement exceeds the standard value.

1) When the measurement is made,theICisstillinthequickstartmode.(Whenthecurrent consumption measuresabout200μA,itislikelythattheICisinthequickstart mode.)

2) The load applied on the geartrain,etc.hasincreased,and the driving pulse to compensate it has been generated.

1)Afterconnectingthetester,movethe OSCILLATINGWEIGHT more quicklyforalongerperiodoftime,andthen,makethemeasurementagain.

2) If the current consumption for the CIRCUIT BLOCK alone is within thestandardvaluerange,overhaulandcleanthemovementparts,andthen,makethemeasurementagain.

The current consumption for the CIRCUIT BLOCK alone exceeds the standard value.

1) The light from outside the movement is affecting the measurement.

2) When the measurement is made,theICisstillinthequickstartmode.(Whenthecurrent consumption measuresabout200μA,itislikelythattheICisinthequickstart mode.)

3) The IC is out of order.

1)Shutoutthelight,andmakethemeasurement again.

2)SwitchtheICtothenormalmode,andmakethemeasurementagain.

3) Replace the CIRCUIT BLOCK.

Cal. 5M84A

21/21

TECHNICAL GUIDE

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