Hyundai H-CMMD4042 - Manual (Page 25)

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General operations
Reset the unit
Operating the unit for the first time or after replacing the car battery, you must reset the unit.
Press the RESET button on the front panel to restore the unit to the original factory settings.
Power on/off
Press POWER/MUTE button on the front panel or the POWER button on the RC to turn the unit on. Press and
hold the POWER/MUTE button for 2 seconds or press the POWER button on the RC to turn the unit power off.
Note: After the unit is off, the volume level and radio current settings will be memorized, and when you turn the
unit on it will resume the stored status that you set.
Volume control
Rotate the VOL knob on the panel clockwise or press the VOL + on the RC to increase the volume level.
Rotate the VOL knob on the panel anticlockwise or press the VOL - on the RC to decrease the volume level.
Mute function
When the unit power is on press the POWER/MUTE button on the panel or the MUTE button on the RC to mute
volume control. Press it again or press the VOL +/- button to resume the volume.
Setting the audio system
Audio control allows you to easily adjust the audio system to meet the in-car acoustic characteristics that vary
depending on the type of car and its measurement.
1. Press the AUDIO button (VOL knob) on the front panel. The Audio menu will appear on the display.