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TECHNICAL GUIDE

Cal. 6N76A

8/18

●

How to install the DATE DIAL GUARD

1) Put the date dial guard on the main plate so

that the A and B portions are over the guide
pins, as shown in the illustrations at right.

2) Move the protrusion D of the date dial

guard in the counterclockwise direction so
that it is caught under the main plate.

3) Slightly move the protrusions C and E in

the counterclockwise direction alternately
to set them under the main plate. Then, set
the A and B portions of the date dial guard
to the guide pins.

4) Check that the date dial guard is fixed

securely to the main plate.

⑧

DATE DiAl guArD

Protrusion D

B Portion

Protrusion C

Protrusion E

A Portion

●

How to install the BATTERY

insert the battery aslant in the direction shown by the arrow. Check that the battery connection (+)
securely touches the side face of the battery.

Coil block

Main plate

⑰

BATTEry ConnECTion (+)

Make sure the side of the battery touches

the Battery Connection (+)

Battery Connection (+)

Battery

Side view

Содержание 6N76A

Страница 1: ... second 0 jewel Stepping motor 1 piece Electronic circuit reset switch Second setting device Date setting 4004274 CIRCUIT BLOCK WITH COIL BLOCK 2 1 2 3 KΩ Use 10 second gate SEIKO SR621SW Nil 1 55 V Approx 3 years 6N76A 3 hands hour minute and small second hand Big date calendar Free Date setting clockwise Time setting hand position adjustment resetting the circuit Monthly rate Less than 20 second...

Страница 2: ...arged compared to those from existing calibers increasing the legibility and practicality This is an analogue quartz watch featuring Big Date calendar The units digits and the tens digits are displayed in two separate indicator windows Compared to date frame of the existing calibers it is enlarged by about twice the original Cal 6N76A Basic calibers Cal 6N76A FEATURES ...

Страница 3: ...d second hands dial snap for second date indicator 0963230 second date indicator 0878 positioning lever 0683181 calendar corrector lever 0595181 intermediate date wheel 0817181 date dial guard 0808181 first date indicator 0878 second intermediate wheel for calendar corrector 0962181 date jumper 0810890 hour wheel 0273034 date driving wheel 0802175 positioning lever can be dissassembled and reassem...

Страница 4: ...16121 battery connection 4268066 insulator 4216088 battery connection 4270385 train wheel bridge 0125297 circuit block with coil block 4004274 fourth wheel and pinion 0144151 third wheel and pinion 0231056 fifth wheel and pinion 0701170 reset pin 0033219 step rotOr 4146126 rotor stator 4239062 first intermediate wheel for calendar 0962175 train wheel setting lever 0391041 pin for setting wheel 003...

Страница 5: ... LIST Cal 6N76A 5 18 Tools and consumables required for disassembling reassembling Movement holder UNIVERSAL MOVEMENT HOLDER S 682 Watch oils SEIKO watch oil AO 3 or Moebius A and AO 2 or Moebius F AO 3 AO 2 ...

Страница 6: ...o the SEIKO WATCH PARTS CATALOGUE in order to choose corresponding parts FIRST DATE INDITATOR 0878 SECOND DATE INDICATOR 0878 Parts Code Position of Date Frame FIRST DATE INDITATOR SECOND DATE INDICATOR 6H 0878123 0878127 12H 0878125 0878178 Please refer to the following table in order to find the correct part number of each date indicator according to the position of date frame ...

Страница 7: ...date dial guard with tweezers to release it from the guide pin and then move it in the clockwise direction until it gets off the guide pin 2 Release the B portion of the date dial guard in the same way as described above and then move it in the clockwise direction until it gets off the guide pin 3 Check that all three protrusions of the date dial guard have come off from the main plate and then re...

Страница 8: ...wise direction alternately to set them under the main plate Then set the A and B portions of the date dial guard to the guide pins 4 Check that the date dial guard is fixed securely to the main plate date dial guard Protrusion D B Portion Protrusion C Protrusion E A Portion How to install the BATTERY Insert the battery aslant in the direction shown by the arrow Check that the battery connection se...

Страница 9: ...eform the hook portions After installing the battery connection check that the three hook portions securely catch the main plate Fig 1 Fig 2 Hook portion Hook portion Main plate Hook portion Tweezers Remarks for setting position of the INSULATOR Notes To insulate between the battery connection and the battery connection the insulator should be set securely with the three pins as bellow Pin insulat...

Страница 10: ...Fourth wheel and pinion Fifth wheel and pinion Step rotor Clutch wheel Fourth wheel and pinion Fifth wheel and pinion Step rotor Pin for setting wheel Setting wheel Third wheel and pinion Minute wheel and pinion Reset pin Center wheel and pinion Remarks for setting position of the TRAIN WHEEL SETTING LEVER Notes Install the spring part of the train wheel setting lever to the pin as shown bellow Ta...

Страница 11: ...sembled to the pin is made of plastics and can be damaged easily 1 In disassembling pick up the pin vertically from the main plate with care 2 In reassembling push the pin vertically to the main plate with care Tweezers Center wheel and pinion Minute wheel and pinion pin for setting wheel Setting wheel Main plate The portion that is assembled to the pin Center wheel and pinion Minute wheel and pin...

Страница 12: ...and reassembling POSITIONING LEVER Notes It can be dissassembled and reassembled only at notch on the first date indicator It is impossible to disassemble reassemble at any other position notch on the FIRST DATE INDICATOR FIRST DATE INDICATOR POSITIONING lever ...

Страница 13: ...osition at random First date indicator position setting Pull out the crown to first click and turn the crown to set day 3 to 7h position and day 5 to 12h position Second date indicator position s e t t i n g R o t a t e i t i n t h e clockwise direction by touching on its surface with finger until the two holes overlap 12h 7h 12h 12h 7h first and second date indicator holes overlap first and secon...

Страница 14: ...ained and then read the measurement 4 Make sure the read value is less than 0 83 μ A How to measure the current consumption for the whole movement How to measure the current consumption for the CIRCUIT BLOCK alone 1 To measure the current consumption for the CIRCUIT BLOCK alone connect each probe to the appropriate positive or negative input terminal of the CIR CUIT BLOCK please refer to Structure...

Страница 15: ...able 2 1 KΩ 2 3 KΩ CIRCUIT BLOCK WITH COIL BLOCK COIL 4004274 Structure of the CIRCUIT BLOCK Input terminal Input terminal OUT1 Crystal unit OUT2 C MOS IC Notes Since the circuit block and coil block are made by one piece in disassembling and reassembling take care not to cut the coil line Coil block Coil resistance can be measured by touching on OUT 1 and OUT 2 ...

Страница 16: ...recting the date and day if available Make sure that the date and day changes smoothly Pull out the crown to the 2nd click then turn it Setting mechanism 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 Hands installation Calendar mechanism date change Make sure that the date c...

Страница 17: ...AR WATER RESIST 10BAR 10 BAR WATER RESIST 15BAR 15 BAR WATER RESIST 20BAR 20 BAR SCUBA DIVER S AIR DIVER S 150 m 18 75 BAR 150 m times 0 125 SCUBA DIVER S AIR DIVER S 200 m 25 BAR 200 m times 0 125 He GAS DIVER S 300 m 37 5 BAR 300 m times 0 125 He GAS DIVER S 600 m 75 BAR 600 m times 0 125 He GAS DIVER S 1000 m 125 BAR 1000 m times 0 125 Air leak test Condensation test Condensation test Water pre...

Страница 18: ... ticles and clean the movement The driving pulse is generated in order to compensate the excessive load applied to the wheels The oil has deterio rated leaked or run out If the current consumption for the circuit block alone is with in the standard value range overhaul and clean the move ment parts and then make the measurement again The current consump tion for the cir cui t block alone exceeds t...

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