Hitachi ZW140-6 Operator's Manual page 182

 Push switches  and  simultaneously: Saturation
Adjustment
The saturation switch adjusts image colorfulness. When the
saturation value is increased, image colorfulness increases,
making the darker part of the image brighter. However,
when the value is increased too much, the brighter part
of the image saturates and it becomes white. When the
saturation value is decreased, the image colorfulness
decreases, making the brighter part unsaturated, but notice
that the darker part becomes even darker.
How to adjust saturation:
1. Push switches  and  simultaneously to enter
saturation adjustment mode.
2. Push switch  (-) to decrease the saturation, push switch
 (+) to increase the saturation.
Factory Setting:
Saturation:
The set value will be displayed in percent at upper left
section of the screen.
 Switch : Do not use
 Switch : Minus (-) Switch
 Switch : Plus (+) Switch
 Switch : Standby mode switching switch
Push switch  to enter the standby mode. In the standby
mode, the monitor becomes blank. Push switch  again to
exit the standby mode, and the image again is displayed on
the monitor screen.
OPERATOR'S STATION
50 %
Switches No.  
50 %
1-120
     
MQHA-OP03-001
Saturation Setting
MQHA-OP03-014