TECHNICAL GUIDE
Cal. V157A/V158A
11/18
l
CHECKING THE ELECTRICAL CHARACTERISTICS
<Coil resistance>
es COIL BLOCK between 1.80 and 2.20 kΩ.
<How to measure the current consumption for the whole movement>
1) Remove the
5 SOLAR CELL and the ql RECHARGEABLE BATTERY UNIT from the movement.
2) Tighten the qk RECHARGEABLE BATTERY UNIT SCREW.
3) Connect the (-) probe to the (-) input terminal of the
qk RECHARGEABLE BATTERY UNIT SCREW and
(+) probe to the r; BATTERY CONNECTION (+) as illustrated in Fig. 2.
* When measuring the current consumption using
the SEIKO digital multi-tester (S-860), use the
range of 40μA of SUPPLY V (=1.55V) & GATE
TIME (2S).
3) Wait until a stable measurement becomes available. It usually takes 30 seconds to a few minutes
for getting a stable measurement.
4) Make sure that the read value is
less than 0.80μA.
REMARKS ON INSPECTION AND MEASUREMENT
BATTERY CONNECTION (+)
Fig. 2
RECHARGEABLE BATTERY UNIT SCREW
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