Komatsu PC308USLC-3E0 Operation & Maintenance Manual page 89

Hydraulic excavator
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OPERATION
Adjusting Contrast
1.When monitor adjustment switch (12) is pressed, the monitor
display screen changes to the brightness/contrast screen shown
in the diagram on the right.
2.Use the brightness/contrast screen and press up switch (9) or
down switch (10) to select the contrast monitor.
(The selected monitor is inverted to black.)
3.When the screen changes to the contrast adjustment screen,
press up switch (9) or down switch (10) to adjust the contrast.
4.After completing adjustment of the contrast, press input
confirmation switch (11).
Alarm Buzzer Stop Switch
Use this switch (13) to stop the alarm buzzer when it is sounding
during operation to indicate an abnormality in the warning item.
DETAILED CONTROLS AND GAUGES
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