Adjusting Display Contrast - Casio CASSIOPEIA A-20 Service Manual & Parts List

• Battery holder
Holds main batteries
(AA-size alkaline).
• Indicator clear button
Clears a warning indicator
(red) and alarm operation.
Pressing this button also
turns on power. Power can
be turned off only by press-
ing the power button.
• AC adapter jack
For connection of the
AC adapter.
• RS-232C/Cradle connector
For connection of an RS-232C
cable or cradle.

ADJUSTING DISPLAY CONTRAST

Adjust display contrast whenever the figures on the display become dim and difficult to see. To adjust
display contrast, hold down [Alt] and press [<] (to make the display lighter) or [>] (to make the display
darker).
• Battery holder release
Slide to release the battery holder to remove
it, or to secure the battery holder in place.
• Backup battery compartment
Holds the backup battery (CR2032).
• Card cover (CompactFlash card)
— 6 —
• Indicator (red)
Flashes to indicate the preset
alarm time has been reached, or
to indicate an operational condition
of the application being used.
• Charge indicator (green)
Indicates that charging is in
progress.