PARTS CATALOGUE
Part No.
0878 910
Position of crown
3 o’clock
Position of date frame
Color of figure
White
Color of background
Black
• 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”.
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.
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.
Pressure sensor
A/D - IC
Input terminal (+)
Output terminal
Output terminal
Crystal unit
Output terminal
Output terminal
Input terminal (-)
CPU-IC
<Circuit block>
TECHNICAL GUIDE
<Sensor circuit block>
<A/D circuit block>
Cal. 7K52A
Cal. 7K52A
Between 4 and 5 o'clock
I.
STRUCTURE OF THE CIRCUIT BLOCK
31
Date dial
8
␣ 91
Winding stem (with crown)
