1. Stopper Button Operation |
| |
If the stopper button | is press- | |
ed when the stopper button mark | ||
is set to | the meter needle | |
deflects according to bright - ness. Then when the button is released, the needle remains fixed at the indicated position.
By holding the stopper button depressed and turning it clockwise so that the mark position becomes
the needle is released.
At this time, the meter will deflect freely even if the stopper button is released. To fix the needle, turn the stopper but ton
mark is positioned 
With stopper button in released
position, cover light sensor
with hand or black cloth to completely block light. Check that
meter needle 
correctly indi- cates zero position. If the indication deviates from zero, while observing meter indication, use a coin or similar tool to turn the
rear zero adjust screw | and |
adjust for zero indication. |
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