BenQ Mh740 Digital Projector User Manual
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Operation51 5. System Setup: Advanced menu Baud Rate Selects a baud rate that is identical 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. Te s t P a t t e r nSelecting 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 displays captions in the primary language in your area). Standby Settings Network Selecting On enables the function. The projector is able to provide the network function when it is in standby mode. Monitor Out Selecting On enables the function. The projector can output a VGA signal when it is in standby mode and the COMPUTER 1 jack is correctly connected to devices. See Connection on page 19 for how to make the connection. Audio Pass Through The projector can play sound when it is in standby mode and the corresponding jacks are correctly connected to devices. Press / to choose the source that you wish to use. See Connection on page 19 for how to make the connection. Enabling this function slightly increases the standby power consumption. Network settings Wired LAN AMX Device Discovery When AMX Device Discovery is On, the projector can be detected by AMX controller. MAC Address Displays the mac address for this projector. 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
Operation 52 The Information menu shows you the current operating status of the projector. 6. Information menu Current System Status Source Shows the current signal source. Picture Mode Shows the selected mode in the Picture menu. Resolution Shows the native resolution of the input signal. Lamp Mode Shows the current lamp mode. 3D Format Shows the current 3D mode. Color System Shows input system format, NTSC, PAL, SECAM or RGB. Equivalent Lamp Hour Displays the number of hours the lamp has been used. Firmware Version Displays the firmware version of the projector. FUNCTIONDESCRIPTION
Maintenance53 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 41 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 61 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.
Maintenance 54 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: 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 Equivalent lamp hour 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 30%. 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. 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. Lamp modeDescription Normal100% lamp brightness EconomicSaves 30% lamp power consumption SmartEcoSaves up to 70% lamp power consumption depending on the content brightness level.
Maintenance55 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://lamp.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 59 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 S e t t i n g La m p m o d e as Ec o no m i c o r SmartEco on page 54), 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. Order a new lamp at lamp.benq.com OK Order Replacement Lamp Lamp >XXXX Hours Notice OK Notice Replace Lamp soon Lamp > XXXX Hours Order a new lamp at lamp.benq.com OK Notice Replace Lamp Now Lamp > XXXX Hours Lamp usage time exceeded Order a new lamp at lamp.benq.com OK Notice Out of Lamp Usage Time Replace lamp (Refer to user manual) Then reset lamp timer Order a new lamp at lamp.benq.com
Maintenance 56 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 screw from the left side. 3. Remove the lamp compartment cover as shown. 4. Loosen the three captive screws that secure the lamp. • Do not turn the power on with the lamp cover removed. • Do not insert your fingers between the lamp and the projector. The sharp edges inside the projector may cause injuries.
Maintenance57 10. Restart the projector. Do not turn the power on with the lamp cover removed. 5. Lift the handle so that it stands up. Use the handle to slowly pull the lamp out of the projector. • Pulling it too quickly may cause the lamp to break and scatter broken glass in the projector. • Do not place the lamp in locations where water might splash on it, children can reach it, or near flammable materials. • Do not insert your hands into the projector after the lamp is removed. If you touch the optical components inside, it could cause color unevenness and distortion of the projected images. 6. Insert the new lamp into the lamp compartment and make sure it fits in the projector. • Ensure the connectors are aligned. • If you experience resistance, lift the lamp and start again. 7. Tighten the screws that secure the lamp. 8. Ensure the handle is fully laid flat and locked in place. • Loose screw may cause a bad connection, which could result in malfunction. • Do not over tighten the screw. 9. Replace the lamp compartment cover on the projectorand tighten the captive screw.
Maintenance 58 Resetting the lamp timer 11. After the startup logo, open the On-Screen Display (OSD) menu. Go to the SYSTEM SETUP: Advanced > Lamp Settings menu. Press MODE/ENTER. The Lamp Settings page displays. Highlight Reset lamp timer. A warning message displays asking if you want to reset the lamp timer. Highlight Reset and press MODE/ENTER. The lamp time will be reset to 0. Do not reset if the lamp is not new or replaced as this could cause damage.
Maintenance59 Indicators LightStatus & Description Pow e rTe m pLamp Pow e r eve n t s Orange Off OffStand-by mode Green FlashingOff OffPowering up Green Off OffNormal operation Orange FlashingOff OffProjector is cooling. Lamp events Off OffOrange FlashingThe lamp ignition is not lit up. Off Off Red1. The projector needs 90 seconds to cool down. Or 2. Please contact your dealer for assistance. Thermal events Red Red Red The fans are not working.The projector has shutdown automatically. If you try to re-start the projector, it will shutdown again. Please contact your dealer for assistance. Red Red Off Red Red Orange Red Red Green Green Orange Off The internal temperature is too high. • The intake ventilation or the exhaust ventilation is blocked. • The projector may be in a poorly ventilated location. • The ambient temperature may be too high. Green Orange Red Green Orange Orange Green Orange Green Green Red Red System events Green Off Red The projector has shutdown automatically. If you try to re-start the projector, it will shutdown again. Please contact your dealer for assistance. Red FlashingOff Off Red Off Red Off Green RedLamp door is open. Please check if the lamp door is open or not closed properly.
Troubleshooting 60 Troubleshooting The projector does not turn on. No picture Blurred image Remote control does not work The password is incorrect CauseRemedy There is no power from the power cable.Plug the power cord into the AC inlet on the projector, and plug the power cord into the power outlet. If the power outlet has a switch, make sure that it is switched on. Attempting to turn the projector on again during the cooling process.Wait until the cooling down process has completed. CauseRemedy The video source is not turned on or connected correctly.Turn the video source on and check that the signal cable is connected correctly. The projector is not correctly connected to the input signal device.Check the connection. The input signal has not been correctly selected.Select the correct input signal with the SOURCE key on the projector or remote control. CauseRemedy The projection lens is not correctly focused.Adjust the focus of the lens using the focus ring. The projector and the screen are not aligned properly.Adjust the projection angle and direction as well as the height of the unit if necessary. The lens cover is still closed. Open the lens cover. CauseRemedy The battery is out of power. Replace the battery with new one. There is an obstacle between the remote control and the projector.Remove the obstacle. You are too far away from the projector. Stand within 7 meters (23 feet) of the projector. CauseRemedy You do not remember the password.Please see Entering the password recall procedure on page 27 for details.