. OPERATION DETAILED CONTROLS AND GAUGES maintenance mode, will return to the previous screen on the monitor display. Up Switch, Down Switch selected mode when adjustment mode, or select mode. 3 - 31 Back Switc Press this he brightness/contrast adjustment mode, o r select Press up s witch (9) or do wn switch (10 ) when i n the maintenance mode, brightness/contra st adjustment mode, or select mode to move the c are inverted ursor ) up, on the m down, l onitor eft, or Input Confirmation Switc Press this s witc h (11) to confirm th maintenanc the