Seiko 7T11A Kurzanleitung

Cal. 7T11A

[SPECIFICATIONS]

1/18

Movement

Item Cal. No. 7T11A

0 jewel

Stepping motor, 3 pieces

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

intervals.)

•Second hand stop function

•Electronic circuit reset function

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

temperature range between 5 ºC and 35 ºC)

Use 10-second gate.

SEIKO SR927SW

Nil

1.55 V

Approx. 5 years

•STOPWATCH functions

Measure up to 12 hours in one second increments

Accumulated Elapsed Time Measurement

Split Time Measurement

STOPWATCH hand position adjustment

1 second

4002700, 2 pieces: 2.10 – 2.70 KΩ

1. Coil block for hour, minute, and small second

2. Coil block for stopwatch second

4002711, 1 piece: 1.80 – 2.40 KΩ

1. Coil block for stopwatch minute

Circuit block: Less than 0.20 µA

Movement: Less than 1.10 µA

Time setting, hand position adjustment / resetting the circuit

Free

Outside: Ø 27.6 mm Casing:Ø 27.0 mm

• Diameter

• Height: 3.3 mm

• 3 hands (hour, minute,

and small second hands)

•24 hour indicator

Battery No.

Driving system

Additional function

Crown operation

Loss/Gain

Regulation system

Gate time for rate measurement

Current consumption

Power supply

Battery life

Number of jewels

Interval of hands movements

Normal position

1st click position

Coil resistance

Battery voltage

SPECIFICATIONS

2/18

Cal. 7T11A has a new structure employing one crown and two buttons, but the basic movement

structure of Cal. 7T11A 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. 7T11A.

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

Cal. 7T11A

●Measurement performance

Displays the elapsed time with the 3 designated STOPWATCH hands.

Measures up to 12 hours in one second increments.

●Button operation (Crown position: Normal position)

Button A: START/STOP

Button B: SPLIT/SPLIT RELEASE/RESET

1. STOPWATCH FUNCTION

Button B

Button A

Crown

Stopwatch second hand Minute hand

Stopwatch hour and minute hands

Hour hand

Small second hand

24-hour hand

Click position (Time setting

and adjusting the stopwatch

Normal position

hand position)

Cal. 7T11A

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 12 hours.

After 12 hours, it will stop automatically.

SPECIFICATIONS

/18

●Measurement functions

Accumulated elapsed time measurement and split time measurement are available.

Cal. 7T11A

●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

●Accumulated 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 pr essing button B.

Restart and stop of the stopwatch can be repeated by pressing b utton 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

→ →

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 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

Note*

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

Crown

Note* Pressing Button A for longer than 2 seconds here will allow you to resume the procedure again

Button A

Press Button A for longer than 2 seconds to ready for “0” position adjustment.

Button A

Press Button A for longer than 2 seconds.

The STOPWATCH second hand turns a full circle.

Button A

Press Button A for longer than 2 seconds.

The STOPWATCH hour and minute hand turns a full circle.

Button B

Press Button B to set the STOPWATCH second hand to the “0” position.

Button B

Press Button B repeatedly to reset the STOPWATCH

second hand to the “0”

if button B is kept pressed.

position. (12:00) It moves quickly

Cal. 7T11A

→

Disassembling procedures Figs.:

Reassembling procedures Figs.:

Remarks on removing the Setting stem

To remove the SETTING STEM when taking out

the movement from the case or while disassemb

-ling 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. 0027 973

4283 501

1002 501

0817 503

0271 583

0271 588

[24 HOUR INDICATOR

MECHANISM]

1PIN FOR 24HOUR WHEEL

PLATE

224 HOUR WHEEL PLATE

324 HOUR WHEEL

INTERMEDIATE WHEEL

FOR 24H WHEEL

HOUR WHEEL

HOUR COUNTING WHEEL

Lubricating of some parts is shown in “REMARKS ON DISASSEMBLING AND REASSEMBLING.”

4/18

Cal. 7T11A

0022 230

4225 530

0022 459

4457 814

0396 580

4000 564

4270 710

0125 577

0888 582

0241 583

0261 580

0950 590

0270 582

0261 582

0027 974

0240 580

0231 580

0701 580

0885 594

0885 595

0022 230

0022 459

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

HOUR COUNTING

INTERMEDIATE WHEEL

PIN FOR TRAIN WHEEL BRIDGE

SMALL SECONDS WHEEL

THIRD WHEEL

FIFTH WHEEL

SECONDS COUNTING

1ST INTERMIDIATE WHEEL

SECONDS COUNTING

2ND INTERMIDIATE WHEEL

Lubricating of some parts is shown in “REMARKS ON DISASSEMBLING AND REASSEMBLING.”

BATTERY CLAMP SCREW

CIRCUIT BLOCK COVER

SCREW

[GEAR TRAIN MECHANISM]

5/18

Cal. 7T11A

4002 711

4002 700

4146 710

4450 703

0383 592

0384 582

0281 580

0351 583

4283 581

0221 583

0391 591

4146 710

0282 586

4239 710

4239 711 4239 712

4450 701

0100 588

29 COIL BLOCK

COIL BLOCK FOR

MINUTE COUNTING

COIL BLOCK FOR

SECONDS COUNTING

33 34

44 45

ROTOR FOR

MINUTE COUNTING

ROTOR FOR

SECONDS COUNTING SWITCH LEVER FOR START/

STOP BUTTON

SETTING LEVER

YOKE

SETTING WHEEL

SETTING STEM

ROTOR

CLUTCH WHEEL

SPACER FOR CENTER WHEEL

CENTER WHEEL

TRAIN WHEEL SETTING

LEVER

ROTOR STATOR

ROTOR STATOR FOR

SECONDS COUNTING

ROTOR STATOR FOR

MINUTE COUNTING

SWITCH LEVER FOR

RESET BUTTON

MAIN PLATE

Lubricating of some parts is shown in “REMARKS ON DISASSEMBLING AND REASSEMBLING.”

[SETTING MECHANISM/STEPPING MOTORS

(STATORS AND COIL BLOCKS)]

6/18

Cal. 7T11A

7/18

●How to ﬁnd the correct parts, if not determined by 4 digit caliber 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.

* HOLDING RING FOR DIAL (0866788)

SETTING STEM (0351583)

●

How to discriminate resembled parts

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

1 PIN FOR 24HOUR WHEEL PLATE

0027973

18 PIN FOR TRAIN WHEEL BRIDGE

0027974

CAL. 7T62A

CAL. 7T11A, CAL.7T92A

CAL. 7T94A

No hole

Hole

CIRCUIT BLOCK

The circuit block (4000 564) for Cal.7T11A is also used for Cal.7T92A.

*The holes for discrimination are intended to discriminate

among the circuit blocks for Cal. 7T11A, 7T62A, 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 both Cal.7T11A and Cal.7T92A.

13 (4000 564)

Cal. 7T11A

●Tools and consumables required for disassembling/reassembling

•Movement holder

UNIVERSAL MOVEMENT HOLDER

(S-682)

• Watch oils

SEIKO watch grease (S-6) and watch oils (AO-3 and AO-2)

S-6 AO-2

AO-3

8/18

TECHNICAL GUIDE Cal. 7T11A

REMARKS ON DISASSEMBLING AND REASSEMBLING

THE MOVEMENT

●How to remove the SETTING STEM before dismantling the movement

●Setting mechanism

•Setting position and lubricating

34 SWITCH LEVER FOR START/STOP BUTTON

35 SETTING LEVER

36 YOKE

42 TRAIN WHEEL SETTING LEVER

TRAIN WHEEL SETTING LEVER

YOKE

SETTING LEVER

SWITCH LEVER FOR START/STOP BUTTON

AO-3

SEIKO Watch Oil S-6

38 SETTING STEM

Crown position:

Click position

Push the SETTING LEVER gently (refer to the picture on the

right) in order to disengage it from the SETTING STEM. Then

pull out the crown with the stem completely.

9/18

Cal. 7T11A

TECHNICAL GUIDE

15 TRAIN WHEEL BRIDGE and 18 PIN FOR TRAIN WHEEL BRIDGE

●Gear train mechanism

After setting the as illustrated

below, lubricate the upper pivots of the following parts:

•32 ROTOR, 33 ROTOR FOR SECONDS COUNTING,

COUNTING (as illustrated below)

•24 MINUTE WHEEL, 16 SECONDS COUNTING WHEEL

Upper pivot of the ROTOR

Upper pivot of the MINUTE WHEEL Other portions

WHEEL (as illustrated below)

31 ROTOR FOR MINUTE

and 19 SMALL SECONDS

16 SECONDS COUNTING WHEEL

CENTER WHEEL

10/18

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