4 | KDC-X792/KDC-X692/KDC-MP738U/KDC-MP638UBasic OperationAUX[1] [6][5][4][3][2] [FNC] [AUTO][ATT] [SRC][AUD]General functionsPower/Source Select button [SRC]Turns on the power.When the power is ON, select a source.SRC Select mode 1: Press the [SRC] button and thenturn the Control knob or push it toward left or right.To determine the selected source, press the Controlknob.SRC Select mode 2: Pressing this button each timeswitches between sources.Tuner (“TUNER”) , USB or iPod (“USB” or “iPod”), CD(“Compact Disc”) , Auxiliary input (“AUX”), and Standby(“STANDBY”)Press at least 1 second to turn off the power.⁄ • The SRC Select mode can be set in “MENU” > “SRCSelect” of (page 6).• When an optional accessory is connected, thesource name for each device appears.• When connection of the iPod is recognized, thesource display changes from “USB” to “iPod”.• USB (iPod) source is recognized as CD source on theconnected unit.Volume control [AUD]Turn the knob to adjust the volume.Attenuator [ATT]Turning the volume down quickly.When the volume is reduced, the “ATT” indicatorflashes.Muting volume upon reception of phone callWhen there is a call, “CALL” is displayed and theaudio system is paused. When the call ends, “CALL”disappears and the audio system comes back on.The audio system comes back on when [SRC] ispressed during a call.⁄ • To use the TEL Mute feature, you need to hookup the MUTE wire to your telephone usinga commercial telephone accessory. Refer to (page 34).Auxiliary input Auxiliary inputConnect a portable audio device with mini-plugcable (3.5 ø).⁄ • Use the mini-plug cable which is stereo type anddoes not have any resistance.• The auxiliary input requires the setting made in“MENU” > “Built in AUX” of (page6).Subwoofer output Control knobSwitches between ON (“SUB WOOFER ON”) and OFF(“SUB WOOFER OFF”) each time pushing toward downfor at least 2 seconds.Function Control [FNC]Pressing this button allows you to set variousfunctions using the Control knob. Refer to Control> (Page 6).Category Function of setup itemMENU Allows you to set up the environment.DISP Allows you to set up the display.Text/Title scroll Control knobScrolls the CD, audio file, and Radio text display whenpushing toward up for at least 2 seconds.Tuner functionsBand select Control knobSwitches between FM1, FM2, and FM3 each timepushing toward up.Switches to AM when pushing toward down.Auxiliary input(Rear side)Control knobUSB TerminalRelease