Mitsubishi Electronics HC6800 user manual To adjust the ratio of change in brightness GAMMA MODE

Contents HC6800 MODELHC6800 LCD PROJECTORREFER SERVICING TO QUALIFIED SERVICE PERSONNEL SHOCK, DO NOT REMOVE COVER OR BACK NO USER-SERVICEABLE PARTS INSIDETHE PROJECTOR IS IN THE POWER ON MODE CAUTION TO REDUCE THE RISK OF ELECTRICTrademark, Registered trademark ContentsEN-4 Important safeguardsDo not keep using the damaged projector Important safeguards continuedDo not look into the lens when it is operating Do not unplug the power cord during operationChecking accessories Inserting the batteries into the remote controlPreparing your projector Preparing your projector continued Indicator areaOverview Attaching the lens capUsing the picture quality adjusting buttons Remote controlBottom side Adjustment feetOperational range of the remote control Using the remote controlReception angle Front of projectorSetting up the screen Setting up your projectorWhen the aspect ratio of the screen is Screen size and projection distanceWhen the aspect ratio of the screen is 2.351 CinemaScope Setting up your projector continuedScreen size and projection distance continued When the aspect ratio of the image isWhen fine streaks are seen on projected images Adjusting the position of the projected imageWhen projected images are distorted to a trapezoid Correcting skewed or distorted imageFront projection, ceiling mounting TRIGGER terminalRear projection Viewing video images A. Connecting the projector to video equipmentBasic home theater system connection PreparationConnecting to a DVD player or HDTV decoder Connecting to a video player, etcViewing video images continued When a TV tuner or VCR is connectedConnecting to video equipment having a HDMI terminal EN-16Connection for video equipment having an HDMI terminal EN-17 B. Plugging in the power cordEN-18 C. Projecting imagesEN-19 To stop projectingEN-20 Setting the aspect ratioHow to change the settings With the remote controlWith the FEATURE menu See page 26 for menu setting B. Plugging the power cord A. Connecting the projector to a computerViewing computer images About DDCViewing computer images continued Setting of the resolution When connecting to a notebook computerAUTO POSITION button Example of the setting procedure for external outputEN-25 Menu operationAvailable settings in the menus How to set the menusMenu operation continued 1. IMAGE menuEN-27 2. INSTALLATION menuEN-28 3. FEATURE menu4. SIGNAL menu EN-295. USER menu To store the settings AV memoryTo enable the stored image quality settings 6. INFORMATION menuTo adjust the brightness CONTRAST and BRIGHTNESS Adjusting projected imagesTo adjust the color COLOR and TINT To sharpen or soften the projected image SHARPNESSTo adjust the tone of white COLOR TEMP Adjusting projected images continuedTo adjust the tone of white To customize the color temperature About color temperatureNoise reduction To adjust the ratio of change in brightness GAMMA MODETo enable the stored gamma mode TRNR temporal recursive noise reductionLPF Progressive filter How to adjust the image supplied from the computer using the menuSimple method to adjust the image position To adjust the horizontal positionPassword function Advanced featuresTo enable the password function To cancel the password functionReplacing the lamp Interval of lamp replacementReplacing the lamp continued To replace the lampReset of the lamp operation time EN-38 When removing the lamp from the ceiling-mounted projectorCleaning of the lens Cleaning of the projector and the ventilation slotsEN-39 For the air-filter whiteProblem TroubleshootingSolution EN-40Troubleshooting continued No image appears on the screen. continuedImages are not displayed correctly Others Images are not displayed correctly. continuedIndicators Normal conditionAbnormal condition Dimension drawings unit mm SpecificationsSpecifications continued Specification of RGB signals in each computer mode of the projectorEN-45 Connectors Replacement part option/not included in the boxEN-46 1 Zusho Baba, Nagaokakyo-City, Kyoto Japan MITSUBISHI ELECTRIC CORPORATION