TECHNICAL GUIDE
Cal. V157A/V158A
13/18
FLUORESCENT LAMP
l
CHECKING THE SOLAR POWER GENERATION SYSTEM
<How to check the solar power generation with the watch>
1)
Remove the
ql
RECHARGEABLE BATTERY UNIT from
the watch.
2) Pull out the crown to the 2nd click in order to reset the
circuit.
3) Connect the (-) probe to the (-) input terminal for the
5
SOLAR CELL and (+) probe to the wa CIRCUIT BLOCK
COVER (as illustrated in Fig. 3).
* When measuring the voltage using the SEIKO digital
multi-tester (S-860), use the range of V (Fig. 4).
4) Expose the watch to the light of a fluorescent lamp
(use the one with 15 to 20 watts) at a distance of 5 cm
while connecting the probes to the watch (Fig. 5).
5) Read the measurement and check if it exceeds 1.8 V.
5 cm
Fig. 4
Fig. 5
Fig. 3
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