TECHNICAL GUIDE
Cal. V157A/V158A
/8
l
CHECKING THE ELECTRICAL CHARACTERISTICS
<Coil resistance>
es
COIL BLOCK between .80 and 2.20 k
Ω
.
<How to measure the current consumption for the whole movement>
) 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 (=.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
