Basic OperationJBL SYNTHESIS SDP-45- 17 -1 STANDBY BUTTONPlaces the unit in standby mode. Status indicator LED is normally offwhen unit is operating. It turns red when unit is placed in standby mode.Power consumption in Standby mode is <0.5 Watt. In ON mode the REDLED will blink when a valid IR signal is received from the remote control.2 FRONT PANEL DISPLAYUse the front-panel display to view the current input, listening mode,input source, and volume level. The four line display also functions as adisplay for messages and menus.3 IR RECEIVERThe IR receiver accepts infrared commands from the SDP-45 remotecontrol. The front panel Standby Button LED with blink when a valid IRcommand is received.4. MENU NAVIGATION BUTTONSThis cluster of 4 buttons are used to navigate the menus on the Alpha-numeric display. Press the right arrow button () to enter the mainmenu. Use the left arrow button () to step back up through the menus.The up () and down () buttons are used to move up and downthrough the menu items. Up () and/or down () arrows may be dis-played at the right hand side of the display to indicate that more itemsare listed either above and/or below the current screen.5 DISPLAY ON/OFF BUTTONTurns the front panel display on and off.6 SURROUND MODE BUTTONSUse the Mode buttons to scroll to the previous and next availablelistening mode. These buttons can also be used to select differentoptions in the setup menus.7 AUDIO INPUT SELECT BUTTONSFor each selected source (input) using these buttons will select the audioinput connection used.Press HDMI to select the HDMI input and the LED above will light.Press DIGITAL to select the S/PDIF COAX or OPTICAL digital inputand the LED above will light.Press the 2-CH BYPASS to switch to the 2-channel analog inputsand bypass all DSP and use a pure analog signal chain. In this casethe front panel LCD will display BYPASS.Pressing the currently selected input will turn that off and default toANALOG input with DSP (through the AD/DA convertors). In thiscase no LED will be on and the front panel LCD will display―ANALOG‖.For the digital inputs (HDMI, DIGITAL) the LED will appear BLUEwhen a valid digital signal is received and RED when no signal isreceived.8 STEREO / STEREO DOWNMIXPress this button to turn off any surround mode processing. If the signalis 2-channel then the output will be 2-channel with bass management. Ifthe supplied bitstream is more than 2 channels, the decoder willautomatically implement a stereo down-mix.9 VOLUME CONTROL / ROTARY ENCODERTo adjust the Main Zone volume level:The MAIN button should be selected (see below). Rotate the volumeknob clockwise or counterclockwise to increase or decrease the volumelevel. The display will show the current Main Zone volume level in dB.The volume range is –80 to +12dB.To adjust the Zone 2 volume level:The ZONE button should be selected (see below). Rotate the volumeknob clockwise or counterclockwise to increase or decrease the volumelevel. The display will show the current Zone 2 volume level in dB. Thevolume range is –80 to +12dB.To adjust variable setting in the Setup Menu:From within any menu that has options rotate the knob to increase ordecrease the setting, or change the options available.