Samsung GX-20 Service Manual page 421

If you click on the BV ADJUST button, a message "Set the EV tester to LV6" will appear.
✁
Set the EV tester to LV6 and click on the "OK" button.
After the following message appears, change the set plate to an F5.6 set plate.
Click on "OK" and continue with the adjustment.
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. ADJUSTMENT
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