4. Press ( ) of machine monitor mode selector switch 1. The screen switches to the display shown on the right and it becomes possible to adjust the brightness. OPERATION 5. Press (>) or ( adjust the brightness between L and H (seven levels). 6. After selecting the desired brightness, press ( ) of machine monitor mode selector switch 1. The brightness is set and the screen returns to the previous screen. 7. After completing the operation, press ( ) of machine monitor mode selector switch 1 twice or turn the starting switch OFF. WA430-6 2-39