Seiko 7T04A - COIL RESISTANCE VALUE CHECKING

TECHNICAL GUIDE
Cal. 7T04A
17/21
●
Value checking – coil resistance (coil blocks)
Check the resistance of each coil block if they are within the range in the following table.
2.10 K
Ω
~ 2.70 K
Ω
2.10 K
Ω
~ 2.70 K
Ω
1.80 K
Ω
~ 2.40 K
Ω
COIL BLOCK (A)
STOPWATCH COIL BLOCK FOR SECONDS
STOPWATCH COIL BLOCK FOR MINUTES
4002700
4002700
4002711
[Structure of the CIRCUIT BLOCK]
Input terminal (+)
Input terminal (-)
Output terminal
Crystal unit
Output terminal
C=MOS=IC