Seiko 6T63A - Function Check

TECHNICAL GUIDE
Cal. 6T63A
16/19
Operation
Function
Checkpoint
Pull out the crown
to the 2nd click
and push it back
in to the normal
position. Repeat
the same several
times.
Setting mechanism
- switching the
function of the time
setting
Make sure that it
has a click at each
position and the
stem is not pulled
off.
Pull out the
crown to the 1st
click, then turn it
clockwise.
Hands installation
Make sure that the
hour and minute
h a n d s m o v e
smoothly (without
touching each other
of touching the
surface of the dial or
inside of the glass).
Make sure that
the day changes
smoothly.
Calendar mechanism
- correcting the day
Make sure that the
date changes when
the hour and minute
hands pass around
midnight.
Calendar mechanism
- date change
●
Function check
Press button A
to start the stop-
watch.
Press button A
again to stop the
stopwatch.
Press button B
to reset the stop-
watch.
Stopwatch
mechanism
Make sure that the
Stopwatch hands
start/stop smoothly.
Make sure that the
Stopwatch hands
are reset to the
“0” position.
Pull out the crown
to the 2nd click,
then turn it.
Setting mechanism
- hour and minute
hand setting
A
B
A A B
Start Stop Reset