BenQ Projector MH741 User Manual
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Operation51 2. Picture menu Picture ModePre-defined picture modes are provided so you can optimize your projector image set-up to suit your program type. See Selecting a picture mode on page 35 for details. Reference ModeSelects a picture mode that most suits your need for the image quality and further fine-tune the image based on the selections listed on the same page below. See Setting the User 1/User 2 mode on page 36 for details. BrightnessAdjusts the brightness of the image. See Adjusting Brightness on page 36 for details. ContrastAdjusts the degree of difference between dark and light in the image. See Adjusting Contrast on page 36 for details. Color Adjusts the color saturation level -- the amount of each color in a video image. See Adjusting Color on page 36 for details. The function is only available when Video or S-Video with NTSC system is selected. Tint Adjusts the red and green color tones of the image. See Adjusting Tint on page 36 for details. The function is only available when Video or S-Video with NTSC system is selected. Sharpness Adjusts the image to make it look sharper or softer. See Adjusting Sharpness on page 36 for details. The function is only available when Video or S-Video with NTSC system is selected. Brilliant ColorAdjusts white peaking while maintaining correct color presentation. See Adjusting Brilliant Color on page 36 for details. Color Te m p e r a t u r eSee Selecting a Color Temperature on page 37 for details. Color Temperature Fine TuningSee Setting a preferred color temperature on page 37 for details. 3D Color ManagementSee 3D Color Management on page 37 for details. Reset picture settingsSee Resetting current or all picture modes on page 38 for details. 3. Source menuQuick Auto SearchSee Switching input signal on page 32 for details. Color Space Conversion See Changing Color Space on page 32 for details. FUNCTIONDESCRIPTION
Operation 52 4. System Setup: Basic menu Presentation TimerReminds the presenter to finish the presentation within a certain time frame. See Setting the presentation timer on page 39 for details. LanguageSets the language for the On-Screen Display (OSD) menus. See Using the menus on page 28 for details. Projector Installation The projector can be installed on a ceiling or behind a screen, or with one or more mirrors. See Choosing a location on page 18 for details. Menu Setting Menu display time Sets the length of time the OSD will remain active after your last key press. The range is from 5 to 30 seconds in 5-second increments. Menu Position Sets the On-Screen Display (OSD) menu position. Reminder Message Selecting On allows the projector to remind you to clean the filter. Operation Setting Direct Power On Powers projector on automatically when the power cable is connected. Signal Power On Sets whether to turn the projector directly on without pressing POWER or ON when the projector is in standby mode and the signal is feed through the VGA cable. Auto Power Off Allows the projector to turn off automatically if no input signal is detected after a set period of time. See Setting Auto Power Off on page 58 for details. Quick Cooling Enables or disables the Quick Cooling function. Selecting On enables the function and the projector cooling time will be shortened from a normal 90 second duration to approximately 2 seconds. If you attempt to restart the projector right after the quick cooling process, it may not be turned on successfully and will rerun its cooling fans. Instant Restart Selecting On enables you to restart the projector immediately within 90 seconds after turning it off. Blank Timer Sets the image blank time when the Blank feature is activated, once elapsed the image will return to the screen. See Hiding the image on page 40 for details. Sleep Timer Sets the auto-shutdown timer. The timer can be set to a value between 30 minutes and 12 hours. FUNCTIONDESCRIPTION
Operation53 4. System Setup: Basic menuRemote ReceiverSets the preferred remote receiver (Front and Rear) allowing the projector to accept signals from the remote control. Panel Key LockDisables or enables all panel key functions except POWER on the projector and keys on the remote control. See Locking control keys on page 41 for details. Background ColorSelects background appearance when there is no signal. Splash Screen Allows you to select which logo screen will appear during projector start-up 5. System Setup: Advanced menu High Altitude ModeA mode for operation in high altitude areas. See Operating in a high altitude environment on page 41 for details. Audio Settings See Adjusting the sound on page 41 for details. Mute Sets the mute function. Vo l u m e Adjusts the audio volume level. Microphone volume Adjusts the microphone sound level. Power on/off Ring Tone Sets the power on/off ring tone. Lamp Settings Lamp Mode See Setting Lamp mode as Economic or SmartEco on page 57 for details. Reset lamp timer See Resetting the lamp timer on page 62 for details. Lamp Timer See Getting to know the lamp hour on page 57 for details on how the total lamp hour is calculated. Security Setting Change password You will be asked to enter the current password before changing to a new one. See Utilizing the password function on page 29 for details. Change Security Settings Pow e r O n L o c k When Pow e r O n L o c k is activated, you will be asked to enter the current password before powering on the projector. If you enter incorrect password 5 times in succession, the projector will automatically shut down in a short time. FUNCTIONDESCRIPTION
Operation 54 5. System Setup: Advanced menu Baud Rate Selects a baud rate that is identica l with your computer’s so that you can connect the projector using a suitable RS-232 cable and update or download the projector’s firmware. This function is intended for qualified service personnel. Test PatternSelecting On enables the function and the projector displays the grid test pattern. It helps you adjust the image size and focus and check that the projected image is free from distortion. Closed Caption Closed Caption Enable Activates the function by selecting On when the selected input signal carries closed captions. • Captions: An on-screen display of the dialogue, narration, and sound effects of TV programs and videos that are closed captioned (usually marked as CC in TV listings). Caption Version Selects a preferred closed captioning mode. To view captions, select CC1, CC2, CC3, or CC4 (CC1 di splays captions in the primary language in your area). Standby Settings Microphone Selecting On enables the function, and the microphone can be used even in standby mode. Monitor Out Selecting On enables the function. The projector can output a VGA signal when it is in standby mo de and the PC jack is correctly connected to devices. See Connection on page 21 for how to make the connection. Audio Pass Through Press ◄/► to choose the source that you wish to use in operation mode. See Connection on page 21 for how to make the connection. When the corresponding jacks are correctly connected to the device, the projector can output an audio signal to the external speaker when it is in standby mo de. The built-in speaker(s) will be muted in standby mode. Enabling this function slightly increases the standby power consumption. Reset All SettingsReturns all settings to the factory preset values. The following settings will still remain: Position, Phase, H. Size, Projector Installation, Language, High Altitude Mode, Security Settings, Baud Rate. FUNCTIONDESCRIPTION
Operation55 The Information menu shows you the current operating status of the projector. 6. Information men u Current System Status Source Shows the current signal source. Picture Mode Shows the selected mode in the Picture menu. Lamp Mode Shows the current lamp mode. Resolution Shows the native resolution of the input signal. 3D Format Shows the current 3D mode. Color System Shows input system format, NTSC, PAL, SECAM or RGB. Lamp Usage Time Displays the number of hours the lamp has been used. Firmware Version Displays the firmware version of the projector. FUNCTIONDESCRIPTION
Maintenance 56 Maintenance Care of the projector Your projector needs little maintenance. The only thing you need to do on a regular basis is to keep the lens clean. Never remove any parts of the projector except the lamp. Contact your dealer if other parts need replacing. Cleaning the lens Clean the lens whenever you notice dirt or dust on the surface. • Use a canister of compressed air to remove dust. • If there is dirt or smears, use lens-cleaning paper or moisten a soft cloth with lens cleaner and gently wipe the lens surface. Never use any type of abrasive pad, alkaline/acid cleaner, scouring powder, or volatile solvent, such as alcohol, benzene, thinner or insecticide. Using such materials or maintaining prolonged contact with rubber or vinyl materials may result in damage to the projector surface and cabinet material. Cleaning the projector case Before you clean the case, turn the projector off using the proper shutdown procedure as described in Shutting down the projector on page 44 and unplug the power cord. • To remove dirt or dust, wipe the case with a soft, lint-free cloth. • To remove stubborn dirt or stains, moisten a soft cloth with water and a neutral pH detergent. Then wipe the case. Never use wax, alcohol, benzene, thinner or other chemical detergents. These can damage the case. Storing the projector If you need to store the projector for an extended time, please follow the instructions below: • Make sure the temperature and humidity of the storage area are within the recommended range for the projector. Please refer to Specifications on page 65 or consult your dealer about the range. • Retract the adjuster feet. • Remove the battery from the remote control. • Pack the projector in its original packing or equivalent. Transporting the projector It is recommended that you ship the projector with its original packing or equivalent. When you carry the projector yourself, please use the original box or a suitable soft carry case.
Maintenance57 Lamp information Getting to know the lamp hour When the projector is in operation, the duration (in hours) of lamp usage is automatically calculated by the built-in timer. The method of calculating the equivalent lamp hour is as follows: Lamp Usage Time = (hours used in Normal mode) + (hours used in Economic mode) + (hours used in SmartEco mode) Equivalent lamp hour = 1.8*(hours used in Normal mode) + 1.3*(hours used in Economic mode) + 1.00*(hours used in SmartEco mode) See Setting Lamp mode as Economic or SmartEco below for more information on Economic mode. To obtain the lamp hour information: 1. Press MENU/EXIT and then press ◄/► until the SYSTEM SETUP: Advanced menu is highlighted. 2. Press ▼ to highlight Lamp Settings and press MODE/ENTER. The Lamp Settings page displays. 3. You will see the Lamp Timer information displaying on the menu. 4. To leave the menu, press MENU/EXIT. You can also get the lamp hour information on the INFORMATION menu. Extending lamp life The projection lamp is a consumable item. To keep the lamp life as long as possible, you can do the following settings via the OSD menu. Setting Lamp mode as Economic or SmartEco Using Economic mode reduces system noise and power consumption by 20%. Using SmartEco mode reduces system noise and lamp power consumption by up to 70%. If the Economic or SmartEco mode is selected, the light output will be reduced and result in darker projected pictures. Setting the projector in Economic or SmartEco mode also extends the lamp operation life. To set Economic or SmartEco mode, go into the SYSTEM SETUP: Advanced > Lamp Settings > Lamp mode menu and press ◄/► until your desired mode is selected. Lamp modeDescription Normal100% lamp brightness EconomicSaves 20% lamp power consumption. SmartEcoSave up to 30% lamp power consumption depending on the content brightness level.
Maintenance 58 Setting Auto Power Off This function allows the projector to turn off automatically if no input source is detected after a set period of time to prevent unnecessary waste of lamp life. To s e t Auto Power Off, go into the SYSTEM SETUP: Basic > Auto Power Off menu and press ◄/►. The time period can be set from 5 to 30 minutes in 5-minute increments. If the preset time lengths are not suitable for your presentation, select Disable. The projector will not automatically shut down in a certain time period.
Maintenance59 Timing of replacing the lamp When the Lamp indicator lights up red or a message appears suggesting it is time to replace the lamp, please install a new lamp or consult your dealer. An old lamp may cause a malfunction in the projector and in some instances the lamp may explode. Go to http://www.benq.com for a replacement lamp. The Lamp indicator light and Temperature warning light will light up if the lamp becomes too hot. Turn the projector off and let the projector cool for 45 minutes. If the lamp or Temp indicator still lights up after turning the power back on, please contact your dealer. See Indicators on page 63 for details. The following lamp warning displays will remind you to change the lamp. The warning messages below are for reference only. Please follow the actual on-screen instructions to prepare and replace the lamp. StatusMessage Install a new lamp for optimal performance. If the projector is normally run with Economic selected (See Setting Lamp mode as Economic or SmartEco on page 57), you may continue to operate the projector until the next lamp warning appears. Press MODE/ENTER to dismiss the message. It is strongly recommended that you replace the lamp at this age. The lamp is a consumable item. The lamp brightness diminishes with use. This is normal lamp behavior. You can replace the lamp whenever you notice that the brightness level has significantly diminished. Press MODE/ENTER to dismiss the message. The lamp MUST be replaced before the projector will operate normally. Press MODE/ENTER to dismiss the message.
Maintenance 60 Replacing the lamp • If lamp replacement is performed while the projector is suspended upside-down from the ceiling, make sure that no one is underneath the lamp socket to avoid any possible injury or damage to the human eyes caused by fractured lamp. • To reduce the risk of electrical shock, always turn the projector off and disconnect the power cord before changing the lamp. • To reduce the risk of severe burns, allow the projector to cool for at least 45 minutes before replacing the lamp. • To reduce the risk of injuries to fingers and damage to internal components, use caution when removing lamp glass that has shattered into sharp pieces. • To reduce the risk of injuries to fingers and/or compromising image quality by touching the lens, do not touch the empty lamp compartment when the lamp is removed. • This lamp contains mercury. Consult your local hazardous waste regulations to dispose of this lamp in a proper manner. • To assure optimal performance from the projector, it is recommended that you purchase a BenQ projector lamp for lamp replacement. • Ensure good ventilation when handling broken lamps. We recommend that you use respirators, safety glasses, goggles or face shield and wear protective clothing such as gloves. 1. Turn the power off and disconnect the projector from the wall socket. If the lamp is hot, avoid burns by waiting for approximately 45 minutes until the lamp has cooled. 2. Loosen the captive screws from the left and rear side. 3. Remove the lamp compartment cover as shown. 4. Disconnect the lamp connector from the projector as illustrated.