5
PARTS CATALOGUE
Cal. YT57B
Remarks:
3
Holding ring for dial 0866 636
The type of holding ring for dial is determined based on the design of cases.
Check the case number and refer to “SEIKO Casing Parts Catalogue” to choose a corresponding holding
ring for dial.
Color of
background
White
Black
3 o’clock
3 o’clock
Position of
crown
3 o’clock
3 o’clock
Position of
calendar frame
Color of figure
Black
White
Part code
0878 729
0878 730
6
Date dial
The type of date dial is determined based on the design of cases.
Check the case number and refer to “SEIKO Casing Parts Catalogue” to choose a corresponding date
dial.
44
Winding stem 0351 653
The type of winding stem is determined based on the design of cases.
Check the case number and refer to “SEIKO Casing Parts Catalogue” to choose a corresponding
winding stem.
TECHNICAL GUIDE
Cal. YT57B
•
The explanation here is only for the particular points of Cal. YT57B.
•
For the repairing, checking and measuring procedures, refer to the “TECHNICAL GUIDE, GENERAL
INSTRUCTIONS”.
I.
STRUCTURE OF THE CIRCUIT BLOCK
Coil output terminal
Crystal unit
Input terminal (–)
C-MOS-IC
Input terminal (+)
Automatic generating input terminal
