Komatsu D31EX-21, Operation & Maintenance Manual, Page: 101 / 256

OPERATION
EXPLANATION OF COMPONENTS
3-49
POWER SWITCH/VOLUME
Turn this knob (1) to the right until it clicks to turn the power on.
Turn it further to increase the volume.
AUTO-STORE/PRESET SCAN BUTTON
Use this button (2) to actuate the preset scan and auto-store
functions.
q
Auto-store
Each time this button is pressed for more than 2 seconds
while in radio reception, this auto-store function automati-
cally starts to search for the desired station within a receiv-
able band, and memorize the frequency in the preset
memory. During this scanning process, the frequency
shown in the right side of display continues to change. This
indicates that each frequency is memorized in the auto-
store.
REMARK
The auto-store function cannot be used when the channel dis-
play is flashing.
When the display is flashing, the preset scan function is being
used.
q
Preset scan
If this button is pressed for less than 0.5 second while in radio reception, programs from the six preset stations
in the same band will be broadcast one after another for 5 seconds each, starting from No. 1 through No. 6
stations consecutively.
When the desired station is found, press the button again. This stops the preset scan tuning process and
switches to ordinary broadcasting. The same process will be repeated continuously until the button is pressed
again.
BASS CONTROL KNOB
Turn this button (3) to the left to reduce the low tones; turn it to
the right to emphasize the low tones.
Direction (a): Low tone reduced
Direction (b): Low tone emphasized