Seiko 4T57A Technical Manual & Parts Catalogue page 9

TECHNICAL GUIDE
[Structure of the CIRCUIT BLOCK]
Crystal unit
● Value checking – coil resistance (coil blocks)
Check the resistance of each coil block if they are within the range in the following table.
COIL BLOCK (A)
COIL BLOCK (B)
Output terminal(CG)
4002904
4002923
9/11
C=MOS=IC
Input terminal (-)
Output terminal(hand moving)
1.0 KΩ – 1.2 KΩ
1.28 KΩ – 1.48 KΩ
Cal. 4T57A
Input terminal (+)