Remarks On Inspection And Measurement; Function Check - Seiko 4R37A Technical Manual

TECHNICAL GUIDE

REMARKS ON INSPECTION AND MEASUREMENT

l Function check
Operation
Pull out the
crown to the 2nd
click and push it
back in to the
normal
position. Repeat
the same several
times.
Pull out the
crown to the 1st
click, then turn it.
Pull out the
crown to the 2nd
click, then turn it.
Function
Setting mechanism -
switching the
function of the time
setting
Calendar
mechanism -
correcting the date,
if available
Setting mechanism
- hour, minute and
24-hour hand setting
Hands installation
Calendar
mechanism - date
change
19/21
Cal. 4R37A
Checkpoint
Make sure that it has
a click at each
position and the
stem is not pulled
off.
Make sure that the
date changes
smoothly.
Make sure that the
hour and minute
hands move
smoothly (without
touching each other
or touching the
surface of the dial or
inside of the glass).
Make sure that the
24-hour hand moves
correspondingly
with the hour hand.
Make sure that the
date changes when
the hour and minute
hands pass around
midnight.