Specifications

TECHNICAL GUIDE

Cal. 4F32A, 8F32A, 8F33A, 8F35A

III. VALUE CHECKING

● Coil block resistance

3.6 KΩ ~ 4.0 KΩ

1. Measure the resistance with the coil block installed on the main plate.

2. Apply the red and black probes of the tester to the patterns of the coil lead terminal. While doing so,

take care not to touch the end portion of the coil lead terminal, as this will break the coil wire.

● Current consumption

For the whole movement : Less than 1.3 µA (with voltage of 3.0 V supplied from a battery)

For the circuit block alone : Less than 0.9 µA (with voltage of 3.0 V supplied from a battery)

2. Apply the red and black probes of the tester to the circuit block cover and the pattern of the (–) terminal

of the circuit block, respectively.

3. After connecting the tester, contact the “AC” terminal of the circuit block and the circuit block cover

with conductive tweezers. Then, after approximately 20 seconds, start measurement, checking that

a stable measurement is obtained.

Measuring the coil block resistance

1. Check that the crown is in the normal (pushed in) position.

Measuring the current consumption for the whole movement

Measuring the current consumption for the circuit block alone

1. Connect the tester to the input terminals (+) and (–), and contact the “AC” and (+) terminals with

conductive tweezers. Then, after approximately 10 seconds, start the measurement, checking that

a stable measurement is obtained.

* While measuring current consumption, be sure to protect the circuit block from light with black

cloth or the like, as the light may increase the current consumption, resulting in an inaccurate

measurement.

Note: When the current consumption for the whole movement exceeds the standard value while the

current consumption for the circuit block alone is within the standard value range, a driving pulse

may be generated to compensate for the heavy load applied on the gear train, etc. In that case,

overhaul and clean the movement parts, and then, measure the current consumption for the whole

movement again.

Black probe

Red probe