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PARTS CATALOGUE
31 Date dial
Part No.
0878 910
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.
91 Winding stem (with crown)
The winding stem and crown form an inseparable unit. The winding stem alone, therefore, is unavailable
for supply but supplied as part of the crown. Check the case number and refer to "SEIKO Casing Parts
Catalogue" to choose a corresponding crown.
TECHNICAL GUIDE
• The explanation here is only for the particular points of Cal. 7K52A.
• For the repairing, checking and measuring procedures, refer to the "TECHNICAL GUIDE , GENERAL IN-
STRUCTIONS".
I.
STRUCTURE OF THE CIRCUIT BLOCK
Input terminal (+)
8
Position of crown
Position of date frame
Between 4 and 5 o'clock
3 o'clock
Output terminal
Output terminal
Crystal unit
Output terminal
<A/D circuit block>
Color of figure
White
<Circuit block>
<Sensor circuit block>
A/D - IC
Cal. 7K52A
Color of background
Black
Cal. 7K52A
Output terminal
Input terminal (-)
CPU-IC
Pressure sensor
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