Sharp FO-6700 Operation Manual page 42

Adjusting the Resolution and Contrast
To adjust the resolution setting, press the RESOLUTION key one or
more times until the indicator light next to the desired setting comes
on.
RESOLUTION
Contrast
The fax machine has three contrast settings:
AUTO
DARK
LIGHT
The default setting is AUTO.
To adjust the contrast, flip up the Rapid Key overlay (if necessary)
and press the CONTRAST key until the desired setting appears in the
display.
CONTRAST
Q
40
STANDARD
FINE
SUPER FINE
HALF TONE
RESOLUTION
Use AUTO for normal documents.
Use DARK for faint documents.
Use LIGHT for documents with a dark
background.
M:00% SEND READY
M:00% SEND READY
M:00% SEND READY
( AUTO)
( DARK)
(LIGHT)