Seiko V657 Parts Catalog
Seiko V657 Manual
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- Seiko V657 | Parts Catalog - Page 1
wheel setting device • Electronic circuit reset switch • Demonstration movement of the hands Monthly rate at normal temperature range: less than 20 seconds Nil Any gate can be used. SEIKO SR920SW, Maxell SR920SW, Sony SR920SW, Eveready 371, Matsushita SR920SW Battery life is approximately 2 years - Seiko V657 | Parts Catalog - Page 2
on the designof cases, Check thecase number and refer to "CASING PARTS CATALOGUE" to choose a corresponding one. • Discrimination of the hands installation height Cal. V657A watch has numerals printed on the dial and movement to indicate the hands installation height. When repairing, refer to the - Seiko V657 | Parts Catalog - Page 3
GUIDE, GENERAL INSTRUCTIONS", I. STRUCTURE OF THE CIRCUIT BLOCK 0 Input tot minat Input terminal 1+) O C-MOS-LSI Crystal unit -- Coil block output terminal (for motor driving chronograph hands) -- Cod block output terminal (tor motor driving center handsl II. REMARKS ON INSTALLING THE BATTERY - Seiko V657 | Parts Catalog - Page 4
Intermediate date driving wheel LI__ 1 TECHNICAL GUIDE 0 Auxiliary train wheel bridge • Setting position (Stopwatch mechanism) O 0886 002 Intermediate chronograph minute wheel and pinion (B) O 0902 006 Chronograph minute wheel O 0886 001 Intermediate chronograph minute wheel and pinion (A) CO - Seiko V657 | Parts Catalog - Page 5
clamp so that the hooking portion catches the main plate securely. Switch spring (battery clamp) 0 Protrusion Hooking portion 24) Winding stem • How to remove Remove the winding stem with the crown at the normal position while pushing the setting lever (marked with "PUSH If "). 00 -H0RI0RA - Seiko V657 | Parts Catalog - Page 6
Parts No. _ 0701 890 0701 357 0261 176 0281 890 Remarks: Reassemble the step rotor (B) with its pinion facing the main plate side. TECHNICAL GUIDE correct accuracy cannot be obtained. • Current consumption For the whole movement For the circuit block alone Less than 3.0µA Less than 1.5µA
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PARTS
CATALOGUE
/
TECHNICAL
GUIDE
Cal.
V657A
(SPECIFICATIONS)
-
._
____
Cal.
No.
.
_
___
Item
—______,
--..._
am
V657A
Movement
v.,
Ire.
°:..
Pa.
••••
reel
•
'
n
it.
(X
1.0)
04
().
0
z
—
o
•
0
e
.
Al
Movement
size
Outside
diameter
029.5
mm
26.0
mm
between
3
o'clock
and
9
o'clock
sides
Casing
diameter
028.8
mm
Height
3.7
mm
Time
indication
•
Three
hands
(hour,
minute
and
second)
•
Chronograph
hands
(minute,
second
and
1/10
second)
•
Date
calendar
Driving
system
Step
motor
(3
pcs.)
Additional
mechanism
•
Stopwatch
function
•
Measures
up
to
60
minutes
in
1/10
second
increments
•
Split
time
measurement
•
Date
Lalandar
•
Instant
setting
device
for
date
calendar
•
Train
wheel
setting
device
•
Electronic
circuit
reset
switch
•
Demonstration
movement
of
the
hands
Loss/gain
Monthly
rate
at
normal
temperature
range:
less
than
20
seconds
Regulation
system
Nil
Measuring
gate
by
quartz
tester
Any
gate
can
be
used.
Battery
SEIKO
SR920SW,
Maxell
SR920SW,
Sony
SR920SW,
Eveready
371,
Matsushita
SR920SW
Battery
life
is
approximately
2
years.
Voltage:
1.65V
Jewels
0
jewel
PARTS
CATALOGUE
Cal.
V657A
Disassembling
procedure
Figs.
Reassembling
procedure
Figs.
Lubricating:
Types
of
oil
S
Moebius
A
Moebius
V
0
Oil
quantity
Normal
quantity
O
4
Hour,
minute
and
second
hands
Chronograph
minute,
second
and
1/10
second
hands
Dial
0012
066
Auxiliary
train
wheel
bridge
screw
0808
368
Date
dial
guard
Date
dial
0128
368
Auxiliary
train
wheel
bridge
8
0806
368
Date
corrector
wheel
0810
368
Dale
jumper
0)
0802
388
Date
driving
wheel
15
0888
006
0817
388
Chronograph
second
wheel
--
Intermediate
date
driving
wheel
18
0885
357
Intermediate
chronograph
7rt,
4
0836
368
Intermediate
wheel
for
date
corrector
holder
second
wheel
17
0888
002
13
0737
891
Intermediate
chronograph
minute
wheel
and
pinion
(B)
Intermediate
wheel
for
date
corrector
(C)
18
14
0962
891
0902
006
Chronograph
minute
wheel
Intermediate
wheel
fur
date
corrector
(B)
19
08
0886
001
Intermediate
chronograph
minute
wheel
and
pinion
(A)
4
•••
•••••••••.
0885
357
Intermediate
chronograph
second
wheel
20
21
0888
006
Chronograph
second
wheel
v,p
.
)
Hour
wheel
0
[--->
Please
see
the
remarks
on
the
following
pages.
SEIKO
CORPORATION
1
2