Seiko V172A Kurzanleitung

PARTS LIST /TECHNICAL GUIDE

ANALOGUE SOLAR Cal. V172A/V174A

[SPECIFICATIONS]

1/24

Item Cal. No. V172A/V174A

Power reserve

Driving system

Additional function

Crown operation

Loss/Gain

Regulation system

Number of jewels

Normal position

1st click position

Current consumption

Gate time for rate measurement

Power

supply

Motion of the second hand

Coil resistance

Power generator

Rechargeable battery

Operating voltage range

2nd click position

One-second intervals

Stepping motor 4 pieces

Diameter: Outside 27.6 mm

Casing 27.0 mm

Height: 4.4 mm

3 hands

(hour, minute and small

second hands)

Energy depletion forewarning function (The second hand moves at two-

second intervals.)

Overcharge prevention function

Electronic circuit reset function

Second hand stop function

Date calendar

Instant setting device for date calendar

System reset function

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

(Auto stop measuring at 60 minutes)

Accumulated elapsed time measurement

Split time measurement

Single-time alarm function

Stopwatch hand position adjustment

Stopwatch

Time setting, System reset, Setting “0” of stopwatch hand

Monthly rate:less than 15 seconds (worn on the wrist at temperature range

between 5 to 35 degrees Centigrade)

Use 10-second gate

Nil

Solar power generation system

Movement: less than 0.80 μA Circuit block: less than 0.40 μA

4002 541 1.90 - 2.30 kΩ

(COIL BLOCK) (COIL BLOCK FOR STOPWATCH SECOND)

4002 542 1.75 - 2.15 kΩ

(COIL BLOCK FOR STOPWATCH MINUTE) (COIL BLOCK FOR ALARM)

MT920 Manganese titanium lithium rechargeable battery

0.90V - 2.10V

From full charge to stoppage: Approximately 6 months

Nil

V172A V174A

Date setting(counter clockwise), Time setting of alarm

3 hands

(hour, minute and small second

hands), 24-hour indicator

SPECIFICATIONS

2/24

Cal. V172A/V174A

FEATURES

The Cal. V172A/V174A are analogue chronograph watches with a solar power generation system.

l Solar power generation system

The watch operates while charging electricity by converting light received on the dial to

electrical energy. It lasts for 6 months after full charge.

l Energy depletion forewarning function

When the energy stored in the rechargeable battery is reduced to an extremely low level, the

second hand starts moving at 2-second intervals instead of the normal 1-second intervals.

l Guideline of charging time

Environment/Light source Illumination

(lux)

Time required

for full charge

Time required

for steady

operation

Time to charge

1 day of power

General ofﬁces/ Fluorescent

Light

700 -60 hours 150 minutes

30W 20cm/Fluorescent light 3,000 110 hours 13 hours 33 minutes

30W 3cm/ Fluorescent light 10,000 30 hours 3.5 hours 9 minutes

Cloudy weather/Sunlight 10,000 30 hours 3.5 hours 8 minutes

Fair weather/Sunlight 100,000 5 hours 0.6 hours 2 minutes

The above table provides only a general guideline.

It is recommended that the watch be charged for as long as the charging time according to the

column "Time required for steady operation" in this table in order to assure the stable movement

of the watch.

l Caution for charging

When charging the watch, do not place it too close to a photo ﬂash light, spotlight, incandescent

light or other light sources as the watch temperature will become extremely high, causing damage

to the parts inside the watch.

When exposing the watch to sunlight to charge it, do not leave it on the dashboard of a car, etc.

for a long time, as the watch temperature becomes extremely high.

While charging the watch, make sure the watch temperature does not exceed 60 °C.

Order of disassembly: 1

Order of assembly:　　　1

Lubricating:

Types of oil Oil quantity

AO-3 Normal quantity

HOUR, MINUTE

AND SMALL

SECOND HANDS,

24-HOUR HAND

(V174A )

DIAL

CASE BACK

SPACER FOR

SOLAR CELL

4453 500

SOLAR CELL

4025 556(CAL.V172A)

4025 557(CAL .V174 A)

HOLDING RING FOR DIAL

0866 ***

CONTACT POINT SPRING

2PCS.

4281 516

AO-2

PIEZOELECTRIC ELEMENT 4589 801

CASE BACK GASKET

MOVEMENT

CASE

CROWN

PARTS LIST Cal. V172A/V174A

3/24

THIRD INTERMEDIATE WHEEL

FOR CALENDAR CORRECTION

0962 504

GUIDE PLATE FIXING PIN FOR

24-HOUR WHEEL (V174A)

0027 973

DATE DRIVING WHEEL

0802 582

DATE DIAL GUARD

S C R E W（ 2 P C S . ）

0012 354

DATE DIAL GUARD

0808 525

DATE DIAL

0878 ***

GUIDE PLATE FOR DATE DIAL

0712 507

CALENDAR CORRECTOR

SETTING WHEEL

0737 505

GUIED PLATE FOR 24-HOUR

WHEEL (V174A)

4488 500

SECOND INTERMEDIATE

WHEEL FOR CALENDAR

CORRECTION

0962 504

FIRST INTERMEDIATE

WHEEL FOR CALENDAR

CORRECTION

0962 580

GUIDE PLATE FOR DATE

DIAL SCREW

0012 354

ALARM HOUR WHEEL

0271 645

24-HOUR WHEEL (V174A)

1002 534

HOUR WHEEL

0271 636

INTERMEDIATE 24-HOUR

WHEEL ( V174A)

0817 536

Cal. V172A/V174A

PARTS LIST

4/24

RECHARGEABLE BATTERY

GUARD SCREW（3PCS.）

0022 230

SECOND HOLD SPRING

0396 580

BUZZER LEAD TERMINAL

4246 527

RECHARGEABLE BATTERY

G U A R D

4225 616（V172A）

42 25 6 4 4（V174A）

RECHARGEABLE BATTERY

BLOCK

3023 24H

CIRCUIT BLOCK COVER

S C R E W（ 3 P C S . ）

0022 459

CIRCUIT BLOCK COVER

4461 532

CONDUCTING PLATE

4224 518

CIRCUIT BLOCK

4000 750

PARTS LIST Cal. V172A/V174A

5/24

CENTER WHEEL FOR

ALARM

0902 502

MINUTE COUNTING WHEEL

0902 500

INTERMEDIATE MINUTE

COUNTING WHEEL

0950 590

FIRST INTERMEDIATE

SESOND COUNTING WHEEL

0885 590

PIN FOR TRAIN WHEEL

BRIDGE

0027 974

TRAIN WHEEL BRIDGE

0125 516

1/5-SECOND COUNTING

WHEEL

0888 501

FORTH WHEEL AND PINION

0241 583

THIRD WHEEL AND PINION

0231 580

SECOND INTERMEDIATE

1/5-SECOND COUNTING

WHEEL

0885 591

MINUTE WHEEL

0261 582

ALRAM MINUTE WHEEL

0261 582

SMALL SECOND WHEEL

0240 511

INTERMEDIATE ALARM

WHEEL

0950 590

FIFTH WHEEL AND PINION

0701 581

Cal. V172A/V174A

PARTS LIST

6/24

CHRONOGRAPH ROTOR

FOR 1/5-SECOND

4146 710

COIL BLOCK FOR

CHRONOGRAPH

MINUTE 4002 542

COIL BLOCK

4002 541

COIL BLOCK FOR

CHRONOGRAPH 1/5-SECOND

4002 541

R O TO R

4146 710

CHRONOGRAPH ROTOR

FOR MINUTE 4146 710

SETTING WHEEL

0281 580

CLUTCH WHEEL

0282 585

CENTER WHEEL SPRING

4283 581

STATOR

4239 710

STATOR FOR

CHRONOGRAPH

1/5 -SECOND

4239 717

STATOR FOR CHRONOGRAPH

MINUTE 4239 713

COIL BLOCK FOR ALARM

4002 542

ALARM ROTOR

4146 710

SWITCH LEVER A

4450 703

SETTING LEVER

0383 592

YOKE

0384 583

SETTING STEM

0351 586

TRAIN WHEEL SETTING

LEVER

0391 591

CENTER WHEEL AND

PINION

0221 604

STATOR FOR ALARM

4239 712

SWITCH LEVER B

4450 701

MAIN PLATE

0100 579

PARTS LIST Cal. V172A/V174A

7/24

⑰GUIDE PLATE FIXING PIN 0027 973

㉜TRAIN WHEEL BRIDGE FIXING PIN 0027 974

Refer to the following ﬁgures.

④SOLAR CELL 4025 556 (V172A)/4025 557 (V174A)

⑰GUIDE PLATEFIXING PIN

FOR 24-HOUR WHEEL

0027 973

㉜TRAIN WHEEL BRIDGE

FIXING PIN

0027 974

4025 556 (V172A) 4025 557 (V174A)

Cal. V172A/V174A

PARTS LIST

8/24

l

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

the corresponding parts.

 ⑤HOLDING RING FOR DIAL 0866 ***

 ⑨DATE DIAL 0878 ***

SETTING STEM 0351 586

The type of HOLDING RING FOR DIAL is determined based on the design of cases.

Check the case number and refer to the "SEIKO WATCH PARTS CATALOGUE" to choose the

corresponding parts.

PARTS LIST Cal. V172A/V174A

9/24

lTools and consumables required for disassembling/reassembling

•Movement holder

UNIVERSAL MOVEMENT HOLDER (S-682)

• Watch oils

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

AO-3 AO-2

S-6

TECHNICAL GUIDE Cal. V172A/V174A

10/25

REMARKS ON DISASSEMBLING AND REASSEMBLING

Set the notched portions of the dial to the guide posts (4 posts)

of the HOLDING RING FOR DIAL, and check that the dial is ﬁxed

in position.

• Howtoinstall

1HANDS

• Howtoinstall

2DIAL

* Match the polarity of the ROTORs for STOPWATCH and

ALARM, and then install the hands.

Check that the voltage of rechargeable battery exceeds 1.2 V

and the watch is working.

*Crown position: normal position.

Short-circuit in touching the AC pattern and the rechargeable

battery guard with tweezers (refer to the Fig. 1).

In order to match the polarity of the ROTORs, short-circuit in

touching the pattern A and the rechargeable battery guard with

tweezers (refer to the Fig. 2).

Install the CHRONOGRAPH minute hand, the alarm hour hand

and the alarm minute hand at “0” position.

Pull out the crown to the second position, then turn it clockwise

in order to change the calendar.

Install the small second hand, the 24-hour hand (V174A), the

hour hand, the minute hand and the CHRONOGRAPH second

hand at “0” position.

pattern A

Fig. 1

Fig. 2

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