Casio BN-10 Service Manual & Parts List page 54

Display block (LCD ASSY-A140809/A140814)-1/3
Actually, bias for LCD is set to 1/13.
BIAS for LCD R718
1/10 used
1/11 not used
1/12 used
1/13 not used
1/14 used
1/15 not used not used
1/16 used
R718 R715
C724 C725
R717 R716 R715 R728
not used not used used used
not used not used used used
used used not used used
used used not used used
not used used not used used
used not used used
used not used not used used
Bias voltage controller for LCD driver
This circuit (EL and EL driver) is used only with BN-20, is not used with BN-10.
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