TECHNICAL GUIDE
Cal. V115A
11/16
REMARKS ON INSPECTION AND MEASUREMENT
l
Current consumption
For the whole movement
: Less than 0.22
μ
A (with voltage supplied from a battery)
For the circuit block alone
: Less than 0.16
μ
A (with voltage supplied from a battery)
1. Remove the solar cell holder and solar cell.
2. Remove the rechargeable battery unit, and then, reassemble the circuit block, circuit block cover
and two circuit block cover screws.
(As a result, only the rechargeable battery is removed from the movement.)
3. Apply the probes of the tester as shown in the illustration below.
Note: When applying the minus probe of the tester, take care not to short-circuit the minus probe
and circuit block cover.
4. After checking that a stable measurement is obtained with the tester connected, read the current
consumption. (As the hands move at 20-second intervals, 3 to 5 minutes may be required before a
stable measurement is obtained.)
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Value checking - coil resistance (coil blocks)
l
How to measure the current consumption for the whole movement
Note: If the measurement value remains high
or unstable, shut out the light from the
movement, and make a measurement
again.
5. Wait until a stable measurement becomes available.
It usually takes 30 seconds to a few minutes for
getting a stable measurement.
6. Make sure that the read value is less than 0.80
μ
A.
* When measuring the current comsumption using
the SEIKO digital multi-tester (S-860), use the range
of 40
μ
A of SUPPLy V (=1.55V) & GATE TIME 2S).
COIL BLOCK 4002 909 1.70K
Ω
- 2.60K
Ω
