Seiko V14JA Installer manual

1
•Solar power system
•Overcharge prevention function
•Energy depletion forewarning function
•Quick-start function
•Electronic circuit reset switch
•Train wheel setting device
•Day and date calendar function (Day and date hands)
•Instant setting device for date calendar
•24-hour indication system (24-hour hand)
Cal. V14JA
PARTS CATALOGUE /TECHNICAL GUIDE
(x 1.0)
Movement
Item
[SPECIFICATIONS]
Cal. No. V14JA
Outside diameter ø25.0 mm
24.0 mm between 6 o'clock and 12 o'clock sides
21.3 mm between 3 o'clock and 9 o'clock sides
Movement size Casing diameter
Height
Time indication
Driving system
Additional mechanism
3 hands
3.5 mm (Including the battery portion)
ø24.0 mm
23.3 mm between 6 o'clock and 12 o'clock sides
19.3 mm between 3 o'clock and 9 o'clock sides
Step motor (Load compensated driving pulse type)
0.45 ~ 2.20 V
From full charge to stoppage: Approx. 6 months
Loss/gain
Regulation system
Measuring gate by quartz tester
Solar power system
Titanium-lithium ion rechargeable battery
Power supply
Operating voltage range
Expected life per charge
Jewels 2 jewels
Monthly rate at normal temperature range: less than 20 seconds
Nil
Use 10-second gate.
Rechargeable battery
Power generator

2
PARTS CATALOGUE Cal. V14JA
Disassembling procedures Figs. : 1 →48
Reassembling procedures Figs. : 48 →1
Lubricating: Types of oil Oil quantity
Moebius A Normal quantity
➡➡Please see the remarks on the following pages.
(Lubricating of some parts is shown in “II. REMARKS ON DISASSEMBLING AND REASSEMBLING”)
0022 247
•Battery lead terminal screw (1 pc.)
•Circuit block cover screw (2 pcs.)
•Coil block screw (1 pc.)
0012 354
•Calendar mechanism plate screw
(2 pcs.)
•Hour wheel guard screw (2 pcs.)
2 Minute hand
1 Second hand
3 Hour hand
4 24-hour hand
5 Day hand
6 Date hand
7 Dial
8 Solar cell unit
9 4246 636
Solar cell lead terminal
10 0491 735
Dial washer

3
➡➡Please see the remarks on the following pages.
(Lubricating of some parts is shown in “II. REMARKS ON DISASSEMBLING AND REASSEMBLING”)
PARTS CATALOGUE Cal. V14JA
11 0012 354
Calendar mechanism plate
screw
24 0271 949
Hour wheel
23 0962 909
Second intermediate wheel
for calendar correction
22 0737 909
Calendar corrector setting
wheel
21 0376 966
Hour wheel guard
20 0012 354
Hour wheel guard screw
19 0157 966
24-hour hand wheel
18 1002 966
Day wheel
17 0802 535
Date driving wheel
16 0802 570
Day driving wheel
15 0817 966
Intermediate date wheel
14 0804 570
Date corrector setting wheel
13 0970 966
Date star
12 0839 966
Calendar mechanism plate

4
➡➡Please see the remarks on the following pages.
(Lubricating of some parts is shown in “II. REMARKS ON DISASSEMBLING AND REASSEMBLING”)
PARTS CATALOGUE Cal. V14JA
25 0022 247
Battery lead terminal screw
26 3023 24Y
Rechargeable battery unit
27 0022 247
Circuit block cover screw
29 4000 655
Circuit block
30 0125 907
Train wheel bridge
31 0241 966
Fourth wheel and pinion
28 4457 909
Circuit block cover
32 0231 904
Third wheel and pinion
33 0701 904
Fifth wheel and pinion
34 4146 907
Step rotor
42 0384 890
Yoke
41 0383 891
Setting lever
40 4239 907
Rotor stator
39 4002 907
Coil block
45 0962 890
First intermediate
wheel for calendar
correction
44 0282 890
Clutch wheel
43 Winding stem
47 4268 655
Battery connection (+)
46 0221 966
Center wheel and pinion
48 0100 967
Main plate
35 0261 908
Minute wheel
36 0281 904
Setting wheel
37 0391 890
Train wheel setting lever
38 0022 247
Coil block screw

5
PARTS CATALOGUE Cal. V14JA
Remarks:
8 Solar cell unit (with holding ring for dial) 4020 589
As the solar cell unit is set to the holding ring for dial with glue, its type is determined based on the design
of cases. Check the case number and refer to “PULSAR Casing Parts Catalogue” to choose a corresponding
solar cell unit.
43 Winding stem 0351 892
The type of winding stem is determined based on the design of cases. Check the case number and refer
to “PULSAR Casing Parts Catalogue” to choose a corresponding winding stem.
Solar cell input terminal (–)
I. STRUCTURE OF THE CIRCUIT BLOCK
Input terminal (+) (Also serves as a solar cell input terminal (+).)
Input terminal (–)
C-MOS-IC
Crystal unit
Coil output terminal
TECHNICAL GUIDE Cal. V14JA
•The explanation here is only for the particular points of Cal. V14JA.
•For the repairing, checking and measuring procedures, refer to the “TECHNICAL GUIDE, GENERAL
INSTRUCTIONS”.

6
TECHNICAL GUIDE Cal. V14JA
1〜6 Hands
•How to install
Place the movement directly on a flat
metal plate or the like to install the
hands. In doing so, check that the
spring portion of the circuit block cover
is not pressed down.
II. REMARKS ON DISASSEMBLING AND REASSEMBLING
•Hand installation procedure
1) Install the date and day hands at
desired marker positions,
respectively.
2) Pull out the crown to the second
click, and turn it clockwise until the
date hand shifts.
3) Install the 24-hour hand so that it exactly indicates “24” on the 24-hour scale. In doing so, take care not to
press down on the movement too hard.
4) Install the hour, minute and second hands in the same manner as you do with conventional watches.
5) Check that all the hands are fixed properly in position.
•How to install
7 Dial
Solar cell unit
Guide post at the 4 o‘clock side
Set the notched portions of the dial to
the guide posts at the 4 o‘clock and 10
o‘clock sides of the solar cell unit, and
check that the dial is fixed in position.
Metal plate
Guide post at the 10 o‘clock side
Dial

7
• The solar cell unit is fixed by two hooking portions at the
12 o‘clock and 6 o‘clock sides.
• Insert the tip of a screwdriver into a gap between the
hooking portion and main plate as shown in the
illustration, and then, turn the screwdriver in the direction
of the arrow to release the hooking portion from the
main plate.
TECHNICAL GUIDE Cal. V14JA
•How to remove
•How to install
8 Solar cell unit
Hooking portion
Screwdriver
Main plate
• Set the hooking portions at the 12 o‘clock and 6 o‘clock
sides to the main plate.
• Gently push the solar cell unit above the hooking portions
so that they catch the main plate securely.
Notes: •When installing the solar cell unit, take care not
to damage or deform the solar panel.
•After installing the solar cell unit, check that
both the hooking portions catch the main plate
securely.
•If the solar panel is soiled, gently wipe it with a
soft chamois or the like soaked with alcohol. Main plate
Hooking portion
Push

8
TECHNICAL GUIDE Cal. V14JA
12 Calendar mechanism plate
•Setting position
Refer to the illustration below to check where to install the respective wheels.
•How to install
1) Set the date jumper to the date star, and then have the
hooking portion “A” catch the main plate.
2) Set the day jumper to the day wheel, and then have the
hooking portion “B” catch the main plate.
3) Tighten the two calendar mechanism plate screws.
•Lubricating
Refer to the illustrations above to lubricate the date and day jumpers.
Main plate
Hooking portion “A”
Date jumper
Calendar mechanism plate Day wheel Calendar mechanism plate
Day jumper
Hooking portion “B”
Main plate
Intermediate date wheel
Date corrector setting wheel
Hour wheel
Day driving wheel
Date star
Date driving wheel
24-hour hand wheel
Day wheel
Date star

9
TECHNICAL GUIDE Cal. V14JA
14 Date corrector setting wheel
•How to install
Set the date corrector setting wheel in the direction as
shown in the illustration at right, taking care not to set it
upside down.
•How to install
Set the intermediate date wheel in the direction as shown
in the illustration at right, taking care not to set it upside
down.
15 Intermediate date wheel
16 Day driving wheel
17 Date driving wheel
Cal. V14JA watches use two different driving wheels to
turn the date and day hands. It is necessary, therefore, to
adjust the engagement of the wheels so that the date and
day hands shift properly.
Top
Bottom
(Main plate side)
Bottom
(Main plate side)
Top
Day driving wheel
Date driving wheel
Guide post “A” of the main plate
Guide post “B” of the main plate
Guide post “A” of the main plate
Allowable range of installation Allowable range of installation
Guide post “B” of the main plate
Claw of the date driving wheel Claw of the day driving wheel
•How to install the date and day driving wheels for proper engagement
1) Install the date driving wheel so that its claw overlaps the guide post “A” of the main plate as shown in
the illustration below.
2) While checking that the date driving wheel does not move, install the day driving wheel so that its claw
overlaps the guide post “B” of the main plate as shown in the illustration below.

10
TECHNICAL GUIDE Cal. V14JA
26 Rechargeable battery unit
•How to remove
•Remove the battery lead terminal screw, and then pry
up the “A” portion in the illustration with tweezers to
remove the rechargeable battery unit.
•How to install
•Set the “B” portion of the battery lead terminal to the
guide hole of the main plate, and then push the center
portion of the rechargeable battery unit (the “C” portion
in the illustration) to fix it in position.
Battery lead terminal
Notes: •Be sure to observe the correct polarity of the
rechargeable battery unit. The (–) side has the
lead terminal.
•Handle the rechargeable battery unit with care
so as not to short-circuit its (+) and (–) terminals.
“B” portion
“A” portion
“C” portion
Rechargeable battery unit
30 Train wheel bridge
Refer to the illustrations below to check where to install the respective wheels.
Third wheel and pinion
Step rotor
Fourth wheel and pinion
Fifth wheel and pinion Third wheel and pinion
Minute wheel
Setting wheel
37 Train wheel setting lever
41 Setting lever
42 Yoke
•Setting position
Refer to the illustration at right.
•Setting position
Yoke
Train wheel setting lever
Center wheel and pinion
Clutch wheel
Winding stem
Step rotor
Fifth wheel and pinion Fourth wheel and pinion
Minute wheel
Setting wheel
Setting lever

11
TECHNICAL GUIDE Cal. V14JA
•The first intermediate wheel for calendar correction
has some elasticity in the contact with the winding
stem so that it can be easily fixed.
•Push in the winding stem straight toward the center
of the main plate.
43 Winding stem
III. VALUE CHECKING
•Coil block resistance
1.8KΩ~ 2.2KΩ
•Current consumption
For the whole movement : Less than 0.8µA (with voltage supplied from a battery)
For the circuit block alone : Less than 0.4µA (with voltage supplied from a battery)
<Measuring the current consumption for the whole movement>
1) Remove the solar cell unit.
2) Remove the rechargeable battery unit and tighten the battery lead terminal screw.
3) Connect the tester as shown in the illustration.
4) Start the measurement 30 seconds to 2 minutes after connecting the tester, checking that a stable
measurement is obtained.
Winding stem
First intermediate wheel for
calendar correction
Clutch wheel
Battery connection (+)
Battery lead terminal screw
S-850
MA-40A

12
TECHNICAL GUIDE Cal. V14JA
<Measuring the current consumption for the circuit block alone>
• Connect the tester to the input terminals (+) and (–) of the circuit block, and wait for 30 seconds to 2
minutes before starting the measurement, checking that a stable measurement is obtained.
Remarks: When the current consumption exceeds the standard value for the whole movement but is within
the standard value range for the circuit block alone, the watch is generating a driving pulse to
compensate for the heavy load that may be applied to the gear train, etc.
In this case, overhaul and clean the movement parts and then measure current consumption for
the whole movement again.
•Output voltage for the solar cell unit
<Measuring the output voltage for the watch>
1) Set the dial to the solar cell unit.
2) Make sure that the rechargeable battery unit is not installed into the watch.
3) Pull out the crown to the second click and reset the circuit.
4) Connect the tester as shown in the illustration.
Pull out the crown to the
second click.
5) Place the watch at a distance of 5cm under a fluorescent light of 15 to 20 watts, exposing the dial side to
the light, and then measure the output voltage.
Fluorescent light
(15 to 20W)
5cm
•Use either of the following two methods to measure the output voltage for the solar cell unit.
1. Measurement of the output voltage for the watch
2. Measurement of the output voltage for the solar cell unit alone
Remarks: If the output voltage for the watch is less than the specified value, measure the output voltage for
the solar cell unit alone.
If the output voltage for the solar cell unit alone exceeds the specified value, check the solar cell
lead terminal for conductivity, etc.
Output voltage when the watch is placed at a distance of 5cm
under a fluorescent light of 15 to 20 watts: More than 2.3V.
S-850
–
+

13
TECHNICAL GUIDE
3) Place the solar cell unit at a distance of 5 cm under a fluorescent light of 15 to 20 watts, exposing the
dial side to the light, and then measure the output voltage.
<Measuring the output voltage for the solar cell unit alone>
Solar cell unit
–
The quick-start function can be checked only when the rechargeable battery voltage is less than 0.9V.
Before checking the function, therefore, be sure to measure the voltage.
(Refer to step 1 in “• Checking the recharging function”.)
•Checking the quick-start function
Fluorescent light
(15 to 20W)
5cm
<Checking procedure>
• After checking that the watch stops operating, place
the watch at a distance of 50cm under a fluorescent
light of 15 to 20 watts, exposing the dial side to the
light. Then, check if the second hand starts moving
at 2-second intervals within 10 seconds.
50 cm
Fluorescent light
(15 to 20W)
1) Set the dial to the solar cell unit.
2) Connect the tester as shown in the illustration.
Cal. V14JA
+

14
TECHNICAL GUIDE Cal. V14JA
•Checking the recharging function
A conventional method of checking the recharging function is to check the difference of the rechargeable
battery voltage between before and after a recharge.
<Checking procedure>
1) Apply the probes of the tester as shown in the illustration to measure the voltage of the rechargeable
battery before recharge.
2) Place the watch at a distance of 5cm under a fluorescent light of 15 to 20 watts, and charge it for 30 minutes.
Remarks:
• Be sure to use a fluorescent light to charge the watch,
as light sources generating heat may cause damage
to the watch. To charge the watch efficiently, place it
under the center of the fluorescent tube.
• While charging the watch, make sure that the watch
temperature does not exceed 50°C.
Fluorescent light
(15 to 20W)
5cm
3) After recharging for 30 minutes, apply the probes of the
tester in the same manner as in step 1) above, and
measure the rechargeable battery voltage while keeping
the watch exposed to the light.
Fluorescent light
(15 to 20W)
4) Refer to the table below to determine whether the recharging function is normal or not.
Voltage before recharge Criteria for recharging quality
1.01 ~ 1.30V The battery is normal if the rechargeable battery voltage has
increased more than 0.03V after recharge.
[Guideline for the quality of the recharging function]
* The above criteria are applicable only when the rechargeable battery voltage before recharge is
within the range between 0.5V and 1.3V.
0.5 ~ 1.00V The battery is normal if the rechargeable battery voltage
obtained after recharge is more than 1.1V.
5cm
+
–

15
96-11 Printed in Japan
TECHNICAL GUIDE Cal. V14JA
•Remarks on measuring the time accuracy
•Before measuring the time accuracy, be sure to install
the solar cell unit.
•If it is necessary to measure the accuracy while the
solar cell unit is not installed and a stable
measurement cannot be obtained, place the watch on
the microphone of the quartz tester and leave it
untouched for more than 2 minutes.
Then, measure the accuracy again.
Microphone of the
quartz tester
Illumina-
tion
(lux)
Light source Environment Time required
for full charge
Time required
for 1-second
intervals *
Time required
to maintain
one-day usage
500
700
1,000
3,000
5,000
10,000
10,000
100,000
60-watt incandescent
light
Fluorescent light
30-watt fluorescent
light
30-watt fluorescent
light
30-watt fluorescent
light
30-watt fluorescent
light
Sun
Sun
Distance of 60 cm
Office, overhead
Distance of 70 cm
Distance of 20 cm
Distance of 12 cm
Distance of 3 cm
Cloudy weather
Fair weather
250 hours
175 hours
120 hours
40 hours
22 hours
10 hours
10 hours
3 hours
15 hours
11 hours
6 hours
2 hours
80 minutes
30 minutes
30 minutes
8 minutes
60 minutes
50 minutes
30 minutes
10 minutes
6 minutes
3 minutes
3 minutes
1 minute
[Caution for charging]
• To prevent damage to the watch caused by heat from a light source, make sure that the watch
temperature does not exceed 50°C while charging the watch.
• The above table provides only a general guideline, and the actual charging time may differ from model
to model.
* The values in this column represent the charging times required until the second hand moves
constantly at 1-second intervals after the watch starts operating with the second hand moving at 2-
second intervals. Even if the watch is not charged for the time specified in the column, the second hand
may temporarily move at 1-second intervals. But, it will soon resume moving at 2-second intervals, and
therefore, charge the watch for more than the specified period.
•Guideline of charging time