BenQ Th681 Digital Projector User Manual
Have a look at the manual BenQ Th681 Digital Projector User Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 702 BenQ manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
Operation 41 Function Description 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 27 for details. Reference ModeSelects a picture mode that best 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 27 for details. BrightnessAdjusts the brightness of the image. See Adjusting Brightness on page 28 for details. ContrastAdjusts the degree of difference between dark and light in the image. See Adjusting Contrast on page 28 for details. Color Adjusts the color saturation level -- the amount of each color in a video image. See Adjusting Color on page 28 for details. This function is only available when a Video, S-Video or Component Video signal is selected. Tint Adjusts the red and green color tones of the image. See Adjusting Tint on page 28 for details. This function is only available when a Video or S-Video signal is selected and the system format is NTSC. Sharpness Adjusts the image to make it look sharper or softer. See Adjusting Sharpness on page 28 for details. This function is only available when a Video, S-Video or Component Video signal is selected. Brilliant ColorSee Adjusting Brilliant Color on page 28 for details. Color TemperatureSee Selecting a Color Temperature on page 28 for details. Color Temperature Fine Tuning See Setting a preferred color temperature on page 29 for details. 3D Color ManagementSee 3D Color Management on page 29 for details. Reset Picture SettingSee Resetting current or all picture modes on page 30 for details. 2. PICTURE menu
Operation 42 Function Description Quick Auto SearchSee Switching input signal on page 24 for details. Color Space ConversionSee Changing Color Space on page 25 for details. Presentation TimerReminds the presenter to finish the presentation within a certain time frame. See Setting the presentation timer on page 30 for details. LanguageSets the language for the On-Screen Display (OSD) menus. See Using the menus on page 21 for details. Projector InstallationThe projector can be installed on a ceiling or behind a screen, or with one or more mirrors. See Choosing a location on page 13 for details. Menu Settings Menu Display Time Sets the length of time the OSD will remain active after your last key press. Menu Position Sets the On-Screen Display (OSD) menu position. Reminder Message Sets the reminder messages on or off. 3. SOURCE menu 4. SYSTEM SETUP: Basic menu
Operation 43 Function Description Operation Settings Direct Power On Allows the projector to turn on automatically once the power is fed through the power cord. 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 47 for details. Quick Cooling Enables or disables the Quick Cooling function. Selecting On enables the function and projector cooling time will be shortened from a normal 90-second duration to approximately 15 seconds. This function is only available when Instant Restart is off. 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 32 for details. Sleep Timer Sets the auto-shutdown timer. Remote ReceiverAllows you to enable all the remote receivers or one specific remote receiver on the projector. 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 32 for details. Background ColorSets the background color for the projector. Splash ScreenAllows you to select which logo screen will display during projector start-up. 4. SYSTEM SETUP: Basic menu
Operation 44 Function Description High Altitude ModeA mode for operation in high altitude areas. See Operating in a high altitude environment on page 32 for details. Audio SettingsSee Adjusting the sound on page 33 for details. Lamp Settings Lamp Mode See Setting the Lamp Mode on page 47 for details. Reset Lamp Timer See Resetting the lamp timer on page 50 for details. Equivalent Lamp See Getting to know the lamp hour on page 47 for details on how the total lamp hour is calculated. Security SettingsSee Utilizing the password function on page 22 for details. 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. Test PatternSee Using the test pattern on page 33 for details. 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). 5. SYSTEM SETUP: Advanced menu
Operation 45 Function Description Standby Settings 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 16 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 16 for how to make the connection. 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: Phase, H. Size, Projector Installation, Color Space Conversion, High Altitude Mode, Security Settings and Baud Rate. 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. Equivalent Lamp Displays the number of hours the lamp has been used. Firmware Version Shows the firmware version of your projector. 5. SYSTEM SETUP: Advanced menu 6. INFORMATION menu
Maintenance 46 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 and case 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. Please be sure to turn off the projector and let it cool down completely before cleaning the lens. • 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 35 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 54 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.
Maintenance 47 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. Total (equivalent) lamp hour = 1.63 x (hours used in Normal mode) + 1.30 x (hours used in Economic mode) + 1.00 x (hours used in SmartEco mode) To obtain the lamp hour information: 1. Press MENU/EXIT and then press / to highlight the SYSTEM SETUP: Advanced menu. 2. Press to highlight Lamp Settings and press MODE/ENTER. The Lamp Settings page appears. 3. You will see the Equivalent Lamp 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 that normally can last up to 3000-4000 hours with proper usage. To keep the lamp life as long as possible, you can do the following settings via the OSD menu. • Setting the Lamp Mode Setting the projector in Economic or SmartEco mode extends the lamp operation life. To s e t Economic or SmartEco mode, go into the SYSTEM SETUP: Advanced > Lamp Settings > Lamp Mode menu and press / . • Setting Auto Power Off This function allows the projector to turn off automatically if no input signal 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 > Operation Settings > Auto Power Off menu and press / . 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 NormalProvides full lamp brightness EconomicLowers brightness to extend the lamp life and decreases the fan noise SmartEcoAdjusts the lamp power automatically depending on the content brightness level
Maintenance 48 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 power 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 52 for details. The following Lamp warning displays will remind you to change the lamp. XXXX shown in the above messages are numbers that vary depending on different models. StatusMessage Install a new lamp for optimal performance. If the projector is normally run with Economic selected (See Getting to know the lamp hour on page 47), you may continue to operate the projector until the next hour 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. OK Order Replacement Lamp Lamp>XXXX Hours Order a new lamp at lamp.benq.com Notice OK Replace Lamp Soon Lamp>XXXX Hours Order a new lamp at lamp.benq.com Notice OK Replace Lamp Now Lamp>XXXX Hours Lamp usage time exceeded Order a new lamp at lamp.benq.com Notice OK Out of Lamp Usage Time Replace lamp (Refer to user manual) Then reset lamp timer Order a new lamp at lamp.benq.com WARNING
Maintenance 49 Replacing the 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 qualified projector lamp for lamp replacement. • 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. • 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 power outlet. If the lamp is hot, avoid burns by waiting for approximately 45 minutes until the lamp has cooled. 2. Loosen the screw that secures the lamp cover on the side of the projector until the lamp cover loosens. 3. Remove the lamp cover from the projector. • 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. 4. Loosen the screw that secures the lamp. 5. Lift the handle so that it stands up. 2 1
Maintenance 5012. Connect the power and restart the projector. Do not turn the power on with the lamp cover removed. Resetting the lamp timer 13. After the startup logo, open the On-Screen Display (OSD) menu. Go to the SYSTEM SETUP: Advanced > Lamp Settings menu. Press MODE/ENTER. 6. 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. 7. As shown in the figure, lower the new lamp. 8. Tighten the screw that secures the lamp. 9. 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. 10. Replace the lamp cover on the projector. 11. Tighten the screw that secures the lamp cover. • Loose screw may cause a bad connection, which could result in malfunction. • Do not over tighten the screw. 2 1