Seiko 7T04A Guía de inicio rápido

PARTS CATALOGUE/TECHNICALGUIDE

Cal. 7T04A

[SPECIFICATIONS]

Cal. No.

Item

Interval of hands movement

Driving system

Additional function

Loss/gain

Regulation system

Gate time for rate measurement

Power

supply

Battery No.

Battery voltage

Battery life

Number of jewels

1/21

Crown

operation

Normal position

1st click position

2nd click position

Current consumption

Coil resistance

1 second

0 jewel

Stepping motor, 3 pieces

• Stopwatch function

60-minute stopwatch in 1/5-second increments.

• Battery life indicator (The small second hand moves at two-second

intervals.)

• Second hand stop function

• Electronic circuit reset function

• Big date indicator function

4002700 (COIL BLOCK and COIL BLOCK FOR SECONDS COUNTING)

2.10 - 2.70 KΩ

Use 10-second gate.

SEIKO SR927SW

Nil

1.55 V

Approx. 5 years

7T04A

• 3 hands (hour, minute,

and small second

hand)

• 24-hour indicator

• Big date indicator

4002711 (COIL BLOCK FOR MINUTE COUNTING)

1.80 - 2.40 KΩ

Free

Date setting(clockwise)

Time setting, hand position adjustment / resetting the circuit

Monthly rate: Less than 15 seconds (worn on the wrist at the tempera-

ture between 5 and 35)

• Diameter

Outside: Ø 27.6 mm Casing: Ø 27.0 mm

• Height: 4.93 mm

Movement: Less than 1.10 μA

Circuit block: Less than 0.20 μA

SPECIFICATIONS

2/21

Cal. 7T04A

Cal. 7T04A is a new basic calibre which has a big date indicator function, but the basic movement

structure of Cal. 7T04A is similar to the previous Cal. 7T Series watches, and the knowledge and

technique you have gained in handling the previous Cal. 7T Series watches will come in handy

when you repair Cal. 7T04A.

When repairing, however, you are requested to have full knowledge of the features characteristic

of these watches and strictly observe the repairing and checking instructions provided in this

guide so that the watches will be repaired correctly.

FEATURES

This is the multi-display analogue watch featuring a stopwatch function.

●The time is indicated by the 24-hour, hour and minute hands, and a small second hand.

●The stop watch can measure up to 60 minutes in 1/5-second increments. After 60 minutes,

it will start counting again from “0” repeatedly up to 12 hours.

●Measurement performance

Displays the elapsed time with the 2 designated STOPWATCH hands.

Measures up to 60 minutes in 1/5-second increments.

●Button operation (Crown position: Normal position)

Button A: START/STOP

Button B: SPLIT/SPLIT RELEASE/RESET

1. STOPWATCH FUNCTION

Cal. 7T04A

a b c

CROWN

Hour hand

Minute hand

STOPWATCH 1/5-second hand

STOPWATCH minute hand

Small second hand

Big date indicator

a: Normal position

b: First click

c: Second click

24-hour hand

SPECIFICATIONS

3/21

Cal. 7T04A

After installing the battery, pull out the crown to the second click position. And then follow the

instructions below to correct the hand positions and set the time.

NECESSARY PROCEDURE AFTER BATTERY CHANGE

Pull out to the second click position when the small second hand is at

the 60 seconds position. The small second hand stops on the spot.

Turn to set the main time. * Check that AM/PM is correctly set.

Crown

Push back in to the normal position in accordance with a time signal.

Crown

Button A

Button B

Button A

Button B

Press Button A for longer than 2 seconds.

The STOPWATCH minute hand turns a full circle.

Press Button B to set the STOPWATCH minute hand to the

“0” position. It moves quickly if button B is kept pressed.

Press Button A for longer than 2 seconds.

The STOPWATCH hour and second hand turns a full circle.

Press Button B repeatedly to reset the STOPWATCH

second hand to the “0” position (12:00). It moves quickly

if button B is kept pressed.

● Standard measurement

Button A

START →Button A

STOP →Button B

RESET

● Split (intermediate) time measurement

Button A

START →Button B

SPLIT

Button B

SPLIT RELEASE

→ → → Button B

RESET

Button A

STOP

● A ccumulated elapsed time measurement

Button A

START →Button A

STOP

Button A

STOP →Button B

RESET

→Button A

RESTART … →

Measurement and release of the split time can be repeated by pressing button B.

Restart and stop of the stopwatch can be repeated by pressing button A.

● Measurement of two competitors

Button A

START

Button B

RESET

Button B

FINISH TIME OF FIRST

RUNNER

Button A

SECOND RUNNER

FINISH

→ →

Button B

FINISH TIME OF

SECOND RUNNER

→ →

●Measurement functions

Accumulated elapsed time measurement and split time measurement are available.

Cal. 7T04A

PARTS LIST

4/21

2 DATE DIAL FOR

TEN’S DIGIT

0878B95

3 DATE DISK GUARD

SCREW (2pcs.)

0012354

4 DATE DISK GUARD

0808522

5 DATE JUMPER SCREW

FOR UNIT’S DIGIT

0012354

6 DATE DISK FOR

UNIT’S DIGIT

0878B93

7 DATE JUMPER FOR

UNIT’S DIGIT

0810504

8 DATE JUMPER FOR

TEN’S DIGIT

0810505

1 DATE DIAL SCREW

FOR TEN’S DIGIT

0012354

DATE DRIVING WHEEL

0802515

Lubricating of some parts is shown in "II. REMARKS ON DISASSEMBLING AND REASSEMBLING."

Disassembling procedures Figs. : 1 62

Reassembling procedures Figs. : 62 1

Remarks on removing the Setting stem

To remove the SETTING STEM when taking

out the movement from the case or while

disassembling the parts during repair work,

be sure to pull out the crown to the first

click, and then, remove the SETTING STEM

while pushing the setting lever. Refer to

page 9 for further details.

[24 HOUR INDICATOR MECHANISM]

PARTS LIST Cal. 7T04A

5/21

11 CALENDAR PLATE

0712505

12 CALENDAR CORRECTOR

WHEEL

0737505

13 24 HOUR WHEEL

1002534

14 INTERMEDIATE WHEEL

FOR 24 HOUR WHEEL

0817536

16 24 HOUR WHEEL PLATE

4288500

19 1ST INTERMDEIATE

WHEEL CALENDAR

0962505

10 CALENDAR PLATE

SCREW

0012354

18 2ND INTERMEDIATE

WHEEL FOR CALENDAR

0962504

20 HOUR WHEEL

0271636

15 PIN FOR 24 HOUR

WHEEL PLATE

0027973

17 3RD INTERMEDIATE

WHEEL FOR CALENDAR

0962504

Lubricating of some parts is shown in "II. REMARKS ON DISASSEMBLING AND REASSEMBLING."

Cal. 7T04A

PARTS LIST

6/21

0022230

4225576

0022459

4457814

0396580

4000727

4270710

0125577

0888501

0241583

0261580

0950590

0902500

0027974

0240571

0231580

0701581

0885590

0885591

0022230

0022459

BATTERY CLAMP SCREW

BATTERY CLAMP

BATTERY (SR927SW)

CIRCUIT BLOCK COVER SCREW

CIRCUIT BLOCK COVER

FRICTIOIN SPRING FOR

SECONDS COUNTING

CIRCUIT BLOCK

BATTERY CONNECTION (-)

TRAIN WHEEL BRIDGE

SECONDS COUNTING WHEEL

FOURTH WHEEL

MINUTE WHEEL

MINUTE COUNTING

INTERMEDIATE WHEEL

MINUTE COUNTING WHEEL

PIN FOR TRAIN WHEEL BRIDGE

SMALL SECONDS WHEEL

THIRD WHEEL

FIFTH WHEEL

SECONDS COUNTING

1ST INTERMIDIATE WHEEL

SECONDS COUNTING

2ND INTERMIDIATE WHEEL

BATTERY CLAMP SCREW

CIRCUIT BLOCK COVER

SCREW

[GEAR TRAIN MECHANISM]

Lubricating of some parts is shown in "II. REMARKS ON DISASSEMBLING AND REASSEMBLING."

PARTS LIST Cal. 7T04A

7/21

ROTOR FOR

SECONDS COUNTING

4146710

CLUTCH WHEEL

0282585

ROTOR STATOR

4239710

ROTOR STATOR FOR

SECONDS COUNTING

4239717

42 COIL BLOCK

4002700

COIL BLOCK FOR

MINUTE COUNTING

4002711

COIL BLOCK FOR

SECONDS COUNTING

4002700

ROTOR FOR

MINUTE COUNTING

4146710

SWITCH LEVER FOR START/

STOP BUTTON

4450703

SETTING LEVER

0383592

YOKE

0384582

SETTING WHEEL

0281580

SETTING STEM

0351583

ROTOR

4146710

SPACER FOR CENTER WHEEL

4283581

CENTER WHEEL

0221604

TRAIN WHEEL SETTING

LEVER

0391591

ROTOR STATOR FOR

MINUTE COUNTING

4239712

SWITCH LEVER FOR

RESET BUTTON

4450701

MAIN PLATE

0100573

SPACER B

0439594

[SETTING MECHANISM/STEPPING MOTORS

(STATORS AND COIL BLOCKS)]

Lubricating of some parts is shown in "II. REMARKS ON DISASSEMBLING AND REASSEMBLING."

Cal. 7T04A

PARTS LIST

8/21

●How to ﬁnd the correct parts, if not determined by 4 digit calibre number

Following 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

choose corresponding parts.

53 SETTING STEM (0351583)

• For screw down crown models, the stem is assembled to the crown and is not available

separately.

● How to discriminate resembled parts

Refer to the illustrations below to see the difference between those two types of pins.

15 PIN FOR 24 HOUR WHEEL PLATE

0027973

32 PIN FOR TRAIN WHEEL BRIDGE

0027974

27 CIRCUIT BLOCK 4000727

The circuit block (4000564) for Cal.7T11A is also used for Cal. 7T92A.

CAL. 7T62A

CAL. 7T04A

CAL. 7T94A

No hole

Hole

* The holes for discrimination are intended to discriminate among

the circuit blocks for Cal. 7T04A, Cal. 7T11A, Cal. 7T62A, Cal.

7T92A and Cal. 7T94.

* After Cal. 7T11A was launched, in order to commonize the circuit

block to Cal.7T92A, the shape of the circuit block was changed.

The old circuit block (4000 518) for Cal.7T92A is usable only for

Cal.7T92A. The new circuit block (4000 564) is usable for Cal.

7T11A and Cal. 7T92A.

CAL. 7T11A, CAL.7T92A

Hole

PARTS LIST Cal. 7T04A

9/21

●Tools and consumables required for disassembling/reassembling

• Movement holder

U N I V E R S A L M O V E M EN T H O L D E R

(S-682)

• Watch oils

SEIKO watch grease S-6 and S-4. watch oil AO-3 (or Moebius A)

S-6 AO-3

S-4

TECHNICAL GUIDE Cal. 7T04A

10/21

PARTS:

4 DATE DISK GUARD

1. Lubricate the jumper part of DATE DISK GUARD.

REMARKS ON DISASSEMBLING AND REASSEMBLING THE MOVEMENT

●CALENDAR MECHANISM

PARTS:

1 DATE DIAL SCREW FOR TEN’S DIGIT

2 DATE DIAL FOR TEN’S DIGIT

8 DATE JUMPER FOR TEN’S DIGIT

1. Lubricate the shaft of DATE DIAL FOR TEN'S DIGIT.

2. A s s e m b l i n g

g u i d e h o l e f o r

DAT E DIA L FOR

TEN’S DIGIT

2. Reassemble the DATE DIAL FOR TEN'S DIGIT

to the CALENDAR PLATE. Make sure that the

assembling guide hole of the DATE DIAL FOR

TEN'S DIGIT aligns with the assembling guide

nick of DATE DISK FOR UNIT'S DIGIT*.

* Please make sure that the DATE

J U M P E R F O R T E N ' S D I G I T i s

engaged with the DATE DIAL FOR

TEN'S DIGIT properly.

3. Reassemble the DATE DIAL SCREW FOR TEN'S

DIGIT. Please be careful not to scratch nor

shave the screw when you tighten it.

Type of oil: AO-3

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