Casio FX-730P Owner's Manual page 19

1-2 Functions of Components
• Display Contrast Control
When the display is dark or faint, depending on the battery condition or display
view angle, adjust it by moving the control located on the left side of the
computer.
To increase the display contrast, turn the control in the direction indicated by
the arrow. To weaken the contrast, turn it in the opposite direction. If the con-
trast is still weak even after the control is at its highest-contrast position, the
batteries have probably run down. If so, replace the batteries as soon as possible.
(For battery replacement, see page 11.)
• Connector for Peripherals
Use this connector (I/O port) for connecting to optionally available peripherals.
When a printer is to be used, connect on the FP- l 2S printer or SB-42 interface
pack (for connecting the computer and FP-40). When a tape recorder is to be
used, connect it with the cassette interface F A-3 or F A-5 .
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Do not insert anything except the FP-12S, SB-42, FA-3 or FA-5 . When any
options are not used, always cover the connector with the connector cover
supplied.
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