Humming sound is present in the audio | Lexicon Lexicon MC-12

MC-12

Troubleshooting & Maintenance

A humming sound is present in the audio.

1.If a cable TV connection is present, disconnect the cable from the wall outlet. If this eliminates the humming sound, a ground loop isolation device is required. Contact an authorized Lexicon dealer or the cable provider for assistance.

2.Disconnect components one at a time to isolate the problem. Once the problem is identified, make sure the associated component is properly grounded and connected to the same electrical circuit as the MC-12.

The MC-12 is exhibiting erratic behavior.

1.Set the rear panel power switch to the c (“off”) position. Wait 10 seconds. Then, set the rear panel power switch to the(“on”) position.

2.Use the MC-12 configuration tool to download the current MC-12 configuration to a personal computer (PC) or document all user-defined settings on the installation worksheet that begins on page A-19. Then, follow the instructions on the next page to restore factory-default settings.

The MC-12 is powered on, but there is no video.

1.Examine the video cables – particularly the S-video cables – to ensure a solid connection between the MC-12 and the associated component.

2.Check the INPUT SETUP menu VIDEO IN and COMPONENT IN parameters to make sure the appropriate video connector is assigned to the selected input.

RF interference is present in the audio or video signal.

1.Make sure the MC-12 is not positioned near unshielded TV or FM antennas, cable TV decoders, and other RF-emitting devices.

2.Replace unshielded cables with shielded cables whenever possible.

If all else fails . . .

1.Set the rear panel power switch to the c (“off”) position. Wait 10 seconds. Then, set the rear panel power switch to the(“on”) position.

2.Use the MC-12 configuration tool to download the current MC-12 configuration to a personal computer (PC) or document all user-defined settings on the installation worksheet that begins on page A-19. Then, follow the instructions on the next page to restore factory-default settings.

3.Contact an authorized Lexicon dealer.

4.Contact Lexicon customer service at 781-280-0300 or www. lexicon.com.

Note:

Visit the knowledgebase at http://www.lexicon.com/ kbase for answers to frequently asked questions and additional troubleshooting information.

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Lexicon Lexicon MC-12 manual Humming sound is present in the audio, MC-12 is exhibiting erratic behavior, If all else fails

Contents

MC-12Digital Controller Important Safety Instructions Customer Support Introduction Getting Started Important Safety InstructionsBasic Operation Unpacking and Inspection Mode Adjust SetupTroubleshooting & Maintenance Audio Controls English Important Safety Instructions Español Instrucciones DE Seguridad Importantes Vii Viii Norsk Viktig Informasjon OM Sikkerhet DE Auspacken und Überprüfung US Unpacking and InspectionES Desembalaje e inspección FR Contenu de l’emballage et inspection Getting Started About the MC-12 Getting Started Highlights Do not Product Registration Installation ConsiderationsDo not To replace the remote control batteries Remote Control Battery Installation Basic Operation Standby Button Front Panel Overview Volume Knob Mode & ButtonsFront Panel Display IR Receiver To use the volume knob to adjust Main Zone volume level Main Zone Off Button Main Zone Input Selection ButtonsZone 2 Input Selection Buttons Zone 2 Off Button Main Outputs Rear Panel Overview AC Input Connector Power SwitchDigital Audio Input Connectors S/PDIF & AES/EBU Analog Audio Input Connectors Rear Panel Overview from Balanced Audio Output Connectors MC-12 Balanced Record Zone Audio Output ConnectorsVideo Input Connectors Main Zone Video Output Connectors IR in Connector Trigger Output ConnectorsMicrophone Input Connectors Removable Access Panel Menu Navigation Button Navigation CommandsMain Menu Menu Item Selection To select the desired setting on a parameter drop-down menuOptions Parameters Command Matrix Command Bank ActivationTo select a parameter setting with a horizontal graph To activate a command bank Main Zone Record Zone Button Button Main Zone Record Zone Shift Screen Display Main Menu Digital TWO-LINE Status Understanding the ZonesMain Zone Two-Line Status Zone 2 Two-Line Status Two-Line Status from Record Zone Two-Line StatusStatus Menus Refer to page 2-24 for status menu parameter descriptions Parameter Possible Settings2CH Status Status 1a Bypass Status Analog Status2CH Bypass Status Digital Status BIT Rate EncodingCenter MIX LVL Channels Input Type InputMIX Room Mode Setup Volume Controls Rear Panel ConfigDisplays Inputs Lock Options Input Setup To customize the name of the selected input Changing Input NamesEdit Input Name To restore the factory-default name of the selected input Restore Default Name Component Assigning Audio & Video Input Connectors Analog Assigning Audio & Video Input Connectors continues on Anlg in LVL Assigning Audio & Video Input Connectors fromThis parameter cannot be adjusted Manual AutoAuto Gain Level Meters Component Video Selecting Preferred Listening Modes continues on Preferred Listening Mode Selection ParametersSelecting Preferred Listening Modes Selecting Preferred Listening Modes from Setup Inputs DVD1 @*D Main Advanced Configuring Advanced Input Settings Input Select Configuring Advanced Input Settings continues onAnalog Bypass Video Input Select Parameter Settings Configuring Advanced Input Settings from Component OSD Video OSD Anlg Analog Dmix Downmix ZONE2 & Record in Parameter Settings Record Advanced Record Digital Bypass Setting Crossover Points continues on Speaker SetupSetting Crossover Points Setting Crossover Points from Custom Speaker SetupsTo configure a custom speaker setup Highpass Filter When the THX Speaker Setup screen opens THX Speaker Setups Custom Setup Menu THX Setup Menu Speaker Setup ParametersParameter Default Setting Possible Settings These parameters cannot be adjusted on the THX Setup menu Front L/R Side L/R Center Rear L/R SUB Xover SUB L/R LFE When a custom speaker setup is selected BGC Boundary Gain Compensation ULTRA2 SUBASA Advanced Speaker Array ASA Advanced Speaker Array continues on Calibrating Speaker Distances & Output Levels ASA Advanced Speaker Array fromSpeaker Calibration Parameters Speaker Distance Parameters Units Speaker Distance Settings Output Level Settings Automatic Options Details Automatic Calibration Microphone Inputs Step a Connecting the Microphones During the microphone check, position the microphones Step B Positioning the Microphones for the Microphone Check During the microphone check, do not Checking for Silence Step C Checking the Microphones Step C Checking the Microphones continues on Check Microphones Results Step C Checking the Microphones from Message Description Troubleshooting Setup Setup Setup During automatic calibration, do not Setup Levels Step E Performing Automatic CalibrationDistances Step E Performing Automatic Calibration continues on Step Distances Distances & Levels Front Left Step E Performing Automatic Calibration from Configure Bass Peak Limiters menu parameter settings Auto Speaker Setup results screen shown above MC-12 calibrated the value for Manual Options Details Manual Calibration To manually calibrate speaker distances Performing Manual Speaker Distance Calibration Performing Manual Output Level Calibration continues on Performing Manual Output Level Calibration From When the Internal Noise message opensInternal Noise Test External Noise Test Input Source Listening Mode Parameter Default Possible Setting Settings Setting Bass Peak Limiters Limiter CAL NoiseLimit ADJ LFE Limiter When 5 Stereo & 5.1 Anlg is selected Rear Panel ConfigWhen 8 Stereo Inputs is selected Stereo & 5.1 Anlg Sync Delay Display SetupDefault Possible Parameter Setting Settings Display Setup continues on To create a custom unit name Display Setup fromEdit Custom Name On-Screen Display continues on ON-SCREEN DisplayStatus Position Letter Indicator Command BankFormat Background Brightness Front Panel Display Main PWR on Volume Control SetupMute Level Zone PWR on Trigger Setup Lock Options Trigger Setup fromRemote only Audio Cntrl SetupModes Audio Controls Audio Controls menu parameter descriptions begin on the next Audio Controls Bass Treble When the Shift command bank is activated Tilt EQ Loudness Loudness Fader BalanceZONE2 Balance Record Balance Mode Adjust Listening mode activation occurs through Mode AdjustListening Mode Activation Preferred Listening Mode Selection Parameters Mode Family Selection Buttons Mode ButtonsChannel Dolby Digital Dts-ES Channel Analog Button Input Source Film Listening Mode DescriptionsListening mode menu parameter descriptions begin on Music Plii + Music Surr Plii Music Plii Movie Film & Music PRO Logic Concert Hall Nightclub Cathedral Church Calibration Panorama To calibrate the Panorama listening mode Mode Adjust Mono Logic CH SurroundChannel Film Mono SurroundMono Music ULTRA2, 5.1 SurEX Parameter SettingChannel Dolby Digital Flagged Dolby Digital Non-Flagged ULTRA2, 5.1 SurEX When THX Ultra2 decoding is engagedWhen THX Surround EX decoding is engaged Digital EX & Digital continues on Digital EX & Digital EX Decoding Auto Flagged Non-Flagged 2-CHANNEL Decoding Mono SurrMono Decoding Auto ULTRA2 Decoding Auto ULTRA2 Decoding on Dts Mode Adjust @@ @** Music 1a Film Chan 1a ULTRA2, 5.1a SurEX, & 5.1a 1a Music Analog Flagged Analog Non-Flagged Parameter Setting SettingsSurround EX on SurEX 1a Standard 1a Bypass 1a 2-CHANNEL Output Levels 2CH Bypass Reset Mode Custom VS PresetReset Mode continues on Custom Bass Content Listening Mode Menu Parameter DescriptionsSpkr Enhance Academy Filter Bass RT Bass EnhanceCenter Depth Center MIX CTR Width DimensionCustom Effect LVL Input Balance EX Decoding Listener POS LFE MIXLiveness LOW Freq Width Output Levels PRE-DELAYPanorama RE-EQUALIZER Sound Stage SizeSource Speaker Angle Surround EX Surr RolloffSurround DLY Vocal Enhance Surround MIX Troubleshooting & Maintenance MC-12 does not power on TroubleshootingRemote control does not work MC-12 is powered on, but there is no audio RF interference is present in the audio or video signal MC-12 is powered on, but there is no videoHumming sound is present in the audio MC-12 is exhibiting erratic behavior To restore factory-default settings Routine MaintenanceRestoring FACTORY-DEFAULT Settings Troubleshooting & Maintenance Appendix Specifications are subject to change without notice SpecificationsAudio Input & Output Connectors Main Zone Audio Performance Microphone Input Connectors Video Input & Output ConnectorsSpecifications continues on page A-4 Composite & S-video Performance Declaration of Conformity Appendix Menu Trees from page A-5 Parameter settings for each input Selecting an Input Setup menu item opens Menu Trees from page A-7 Main Menu Setup Speaker Setup Microphones Menu Trees from page A-9 Press V to Skip Countdown Setting Distances Front Left Menu Trees from page A-11 Meters Menu Trees from page A-14 CH Surround Output Levels Custom Channel SUB L/R LVL Menu Trees from page A-15 Input Balance LFE MIX Menu Trees from page A-17 Input Setup DVD1 DVD2 SAT VCR PVR Game Tape Tuner AUX Installation Worksheet Installation Worksheet from page A-19 Custom Setup THX Setup Speaker Distances Levels Calibration Display Setup Trigger 1 Setup Trigger 2 Setup Index continues on Menu ill Ill Calibration Audio About the, 1-2 to 12ill Parameters 30ill., A-9ill Ill., A-9ill., A-20Page Page Limited Warranty Product Registration LEXICON, INC 3 OAK Park Bedford MA